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SEA - SYD

$537 Find cheap flights from Seattle to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Sydney departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Sydney.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Sydney.
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Sydney (SEA-SYD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:55 am - 9:20 amSEA-SYD
28h 25m1 stop
11:20 am - 9:16 amSYD-SEA
16h 56m1 stop
$731Air Canada
Find Deal
Sun, Nov 17 - Sun, Nov 24
7:45 pm - 7:00 amSEA-SYD
18h 15m1 stop
10:20 am - 11:46 amSYD-SEA
18h 26m1 stop
$752United Airlines
Find Deal
Tue, Sep 10 - Wed, Sep 18
12:30 am - 7:00 amSEA-SYD
37h 30m2 stops
10:20 am - 12:42 amSYD-SEA
31h 22m1 stop
$753United Airlines
Find Deal
Sun, Jul 21 - Sun, Jul 28
7:30 pm - 7:00 amSEA-SYD
18h 30m1 stop
10:20 am - 2:29 pmSYD-SEA
21h 09m1 stop
$759United Airlines
Find Deal
Sun, Jun 30 - Wed, Jul 17
1:30 pm - 6:35 amSEA-SYD
24h 05m2 stops
9:25 am - 11:59 pmSYD-SEA
31h 34m2 stops
$840Delta
Find Deal
Mon, Jul 29 - Wed, Aug 14
1:35 pm - 7:35 amSEA-SYD
24h 00m2 stops
11:05 am - 4:32 pmSYD-SEA
24h 27m2 stops
$895Delta
Find Deal
Sun, Oct 27 - Thu, Nov 14
9:55 am - 9:20 amSEA-SYD
28h 25m1 stop
11:20 am - 2:31 pmSYD-SEA
22h 11m1 stop
$905Air Canada
Find Deal
Mon, Nov 11 - Tue, Nov 19
10:30 am - 7:45 pmSEA-SYD
40h 15m2 stops
9:40 pm - 10:35 pmSYD-SEA
41h 55m2 stops
$1,259Hawaiian Airlines
Find Deal
Sun, Jun 9 - Sun, Jun 23
10:30 am - 7:45 pmSEA-SYD
40h 15m2 stops
9:40 pm - 9:45 pmSYD-SEA
17h 05m1 stop
$1,315Hawaiian Airlines
Find Deal
Tue, Jun 11 - Thu, Jun 20
7:20 pm - 8:10 amSEA-SYD
19h 50m1 stop
9:15 am - 11:59 pmSYD-SEA
31h 44m1 stop
$1,367Qantas Airways
Find Deal
Sat, Jul 20 - Sat, Jul 27

Flights from Seattle to Sydney - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Sydney to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Sydney?

The average price of all flights from Seattle to Sydney clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Sydney on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Seattle to Sydney. For your return ticket, we recommend flying on a Saturday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from Seattle to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Sydney is February, where tickets cost $1,013 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $1,393 and $1,364 respectively.

How far in advance should I book a flight from Seattle to Sydney?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Sydney, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 61 days before departure.

Which airlines provide the cheapest flights from Seattle to Sydney?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Seattle to Sydney found by KAYAK users in the last 72 hours was for $731 on Air Canada, followed by United Airlines ($752). One-way flight deals have also been found from as low as $696 on Hawaiian Airlines and from $844 on Fiji Airways.

Good to know

Low season

May

High season

December

Cheapest flight

$537
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Seattle to Sydney

When to book flights from Seattle to Sydney

Are your dates flexible? Find out the best times to travel from Seattle to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Sydney

  • Are there direct flights from Seattle to Sydney?

    Yes, there are direct flights from Seattle/Tacoma International (SEA) to Sydney/Kingsford Smith (SYD). There is a range of direct flights to choose from, such as Delta, Hawaiian, Fiji Airways, and many more. However, there are several indirect flights to choose from if you are looking for a cheaper flight.

  • Are there any hotels in Sydney Airport (SYD)?

    Yes, there are multiple hotels near and at the airport in Sydney that also provides shuttle services to and from the airport. If you can't stay outside, look no further than the hotels at the airport. These include Rydges Sydney Airport Hotel, Citadines Connect Airport Hotel, and Travelodge Hotel Sydney Airport.

  • What is the best way to get to Sydney CBD from SYD?

    There are several ways to get to Sydney CBD from the airport. You can use a train which will take about 17min or rideshare app services which will take 20min. Alternatively, you can take public transport, a bus which will take 28mins.

  • What is the best way to get to SEA from downtown Seattle?

    It takes about 20min to get to SEA from downtown Seattle by bus. You can order a taxi or use a shuttle. The shuttle runs from the terminals at regular intervals between SEA and downtown.

  • What is the cheapest flight from Seattle to Sydney?

    In the last 3 days, the lowest price for a flight from Seattle to Sydney was $537 for a one-way ticket and $731 for a round-trip.

  • Do I need a passport to fly between Seattle and Sydney?

    Yes

  • Which airports will I be using when flying from Seattle to Sydney?

    On your way to Sydney, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Seattle to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Sydney?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Sydney, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Sydney from Seattle?

    Vancouver is the most popular layover city among KAYAK users traveling from Seattle to Sydney.

  • Which is the best airline for flights from Seattle to Sydney, ANA or Asiana Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Sydney are ANA and Asiana Airlines. With an average price for the route of $1,337 and an overall rating of 8.4, ANA is the most popular choice. Asiana Airlines is also a great choice for the route, with an average price of $1,764 and an overall rating of 8.3.

  • How does KAYAK find such low prices on flights from Seattle to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sydney with an airline and back to Seattle with another airline. Booking your flights between Seattle and SYD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Sydney

  • If you are flying out of Seattle/Tacoma International Airport (SEA) and would like to park your car, SEA offers various options at reasonable prices, depending on how long you plan to park. If you are planning for long-term parking, Park n Jet, located 1mile from Seattle/Tacoma International Airport, is the best choice. For short-term parking, you can use Aeroparking, which is located 1.2 miles from the airport. Also, there is an airport shuttle dropping passengers at each terminal.
  • If you are traveling with kids from Seattle/Tacoma International Airport (SEA) to Sydney Kingsford Smith International Airport (SYD), there are multiple play areas and food courts to enjoy before your flight to SYD. The play areas are located across Delta Sky Lounge between Central terminals and Gate A. They are equipped with many toys for kids.
  • If you are looking to spend the night close to the airport for an early flight, look no further than the best hotels in Seattle, which offer several excellent amenities. Most of them are easily accessible from the airport. Some of the hotels include Double Tree by Hilton, which is located 1.2 miles from the airport, Hampton Inn & Suites Seattle, located at 1.3 miles, and Red Lion Hotel Seattle Airport, which is 1 mile from the airport.
  • SYD offers transport services out of the airport for passengers on a tight schedule upon request. To use these services, call your airline to inform them how best they can help ahead of time. You can choose between a shared ride or express reservation, which you can book online in advance.
  • It is recommended that you arrive a few hours before your trip if traveling out of SEA. If you go to the SEA website ahead of time, you can view the security line wait times to plan ahead of time.
See more tips

Top 5 airlines serving from Seattle to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10457 reviews
8.6Crew
8.2Boarding
7.9Comfort
8.0Entertainment
7.4Food
Airline reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

10.0 ExcellentSash, May 2024SEA - HNL
Read more about Delta reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

No food or entertainment because it was a short flight. Unfortunately the takeoff was delayed more than an hour

The flight left and arrived on time. the only food offered on the 5+ hour flight was a cheese sandwich. Unlike Alaska Airlines there was no information on the website regarding food at all or any option to purchasse in advance. Otherwise, it was an excellent flight.

Parents with kids should all be in the same area. Sounds rude but who what's to fly 6hrs with crying and bratty kids. Just my opinion.

Ok, so I didn’t have seats, so got there very early. I was first in line only to be told, listen for your name for seats. The flight was boarding before they gave me a middle seat, way after others showed up who were given more favorable treatment. Ok, so , don’t show up early and obey all the rules??? Clearly, your gate clerks did not. What gives???

Short flight but delayed. Since its a short flight no food or entertainment necessary

We had an awesome flight attendant who came by and made sure we were okay. Checked on us often and even shared some snacks that she had brought on, like edamame with chili and garlic seasoning. Yummy!

Overall good experience. I'm just over 6ft with long legs and legroom could be better, but is on par with other airlines. Only real negative was turbulence but that's not the airlines fault.

We were not given the seats we reserved. But helpful attendant at gate gave us very nice seats.

Having movies helps past time I wish going Vegas had something

First flight got cancelled. Got booked for another flight departing 3.5 hours later which ended up being 1hr delayed... The flight was good when we finally ended up flying.

The international flight from Sydney to Dallas had great food. I have travelled a lot over the years and this has been the most memorable in my experience so far.

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.) Lounge was crowded

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.)

Initial flight was cancelled so moved to an alternative flight. As a result, stuck in a middle seat. Flight then place in holding pattern prior to landing resulting in a very late trip home.

There was nothing I didn’t like, prices a little lower would help

Flight delay was informed at the last minute. Food quality is not up to Qantas standard I was unable to book an online boarding pass on any of my 6 flights.

Rescheduled after ticket purchased and issued, not 2 or 3 times and not a fourth but by 5 times, by Qantas, that's right, 5 changes! Forcing an overnight stay in Chile and need for visa. Qantas can no longer provide basic services as a national or international service provider. Professionalism is extinct and the provider needs to be mentored and educated in perfecting who to operate as an airline. Qantas is the spirit of Australian dissatisfaction.

Amazing! Was put on the earlier flight and I requested for an aisle seat and was given it. Thanks Qantas!

The crew were amazing - A great job. They made me feel special and valued.

Boarding was terrible - the ground staff member Fredeya at lax was more military than customer service, have never encountered a customer service representative as rude as her. Apart from that all other staff were wonderful and the flight was good.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

The flight was delayed almost 2 hours. Bad customer service etc. I will never fly Luthansa. Ever!!!

On time take off…US cabins look tired and need of refresh!

Fine. Though no food or entertainment so the survey needs to be updated with those options.

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

Unable to initiate refund/reschedule the ticket #worst experience #lost 900$

Flight was delayed for almost 3 hours. Communication of gate change was poor. Email and screen said one gate and it was a different gate from that. Gate changed first to 64 B and then to 64 C. Originally it was 68B. 64C was not communicated properly!

This was a red eye return, so I doubt there would be anyway to make it better. Other than adding beds.

Direct nonstop flight was great. Flight was delayed and the crew announced a 2h delay on the sound system. 30 min or so later I hear my name on the sound system for immediate board. Several other passangers were late too. Reason: The crew incorrectly announced a 2h delay when in reality they meant a new boarding time at 2pm.

Plenty of room in the exit row. Sat on the plane an hour before taking off.☹️ Landed late and had to wait for gate availability.

Flight was on time early arrival better entertainment good staff.everything was excellent

Delayed leaving. On arrival we were taken to the airstrip and had to get off onto an over crowed bus, not all that passengers fit. Drove around the airport for 20 + minutes. Taken off the bus told to go upstairs 3 flights then all the passengers had to walk a mile or more , those of us old there was no one to direct us to were to go. I asked several people with no answers. Once I got to baggage claim my bags were not on the right bag claim. Once again asked for help and finally someone found my bags on a different carasel. Very frustrating.

Excellent host on board. Not so friendly check-in staff. Older plane with no food or entertainment due to short flight. Friendly captain and crew.

I don’t think there was entertainment? No mention of it. It was a good flight. Only complaint was my seat cushion was not attached and kept slipping.

They canceled the flight on us very close to the flight date .

Book cheap flights from Seattle to Sydney

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Sydney found on KAYAK in the last 72 hours.
8/30Fri
1 stop
36h 55mSEA-SYD
$537
10/14Mon
1 stop
38h 00mSEA-SYD
$659
6/5Wed
1 stopHawaiian Airlines
18h 10mSEA-SYD
$696
6/5Wed
2 stopsHawaiian Airlines
40h 15mSEA-SYD
$772
8/29Thu
2 stops
35h 30mSEA-SYD
$810
8/13Tue
1 stopANA
23h 45mSEA-SYD
$1,126
7/30Tue
2 stopsUnited Airlines
37h 25mSEA-SYD
$1,285
6/4Tue
2 stopsAmerican Airlines
37h 45mSEA-SYD
$1,742
7/26Fri
1 stopAmerican Airlines
36h 01mSEA-SYD
$2,134
7/8Mon
2 stopsUnited Airlines
37h 25mSEA-SYD
$5,381

Search by stops

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Last minute flights from Seattle to Sydney

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Sydney that are departing in the next 10 days.
6/2Sun
multi-stopUnited Airlines
22h 30mSEA-SYD
6/16Sun
multi-stopUnited Airlines
19h 00mSYD-SEA
$759
6/2Sun
multi-stopUnited Airlines
26h 50mSEA-SYD
6/16Sun
multi-stopUnited Airlines
23h 22mSYD-SEA
$764
5/31Fri
multi-stopHawaiian Airlines
18h 10mSEA-SYD
6/30Sun
multi-stopHawaiian Airlines
17h 05mSYD-SEA
$1,396
5/31Fri
multi-stopUnited Airlines
32h 50mSEA-SYD
6/30Sun
multi-stopUnited Airlines
19h 47mSYD-SEA
$1,481
6/2Sun
multi-stop
35h 11mSEA-SYD
6/16Sun
multi-stop
33h 35mSYD-SEA
$2,460
6/2Sun
multi-stopChina Southern
38h 12mSEA-SYD
6/16Sun
multi-stopChina Southern
51h 25mSYD-SEA
$3,578
5/31Fri
multi-stop
29h 55mSEA-SYD
6/30Sun
multi-stop
47h 49mSYD-SEA
$4,452
6/1Sat
multi-stopAmerican Airlines
36h 00mSEA-SYD
6/16Sun
multi-stopAmerican Airlines
24h 57mSYD-SEA
$8,471
6/4Tue
multi-stop
43h 25mSEA-SYD
6/16Sun
multi-stop
34h 30mSYD-SEA
$13,572

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Seattle - Sydney Flights

Departure:

Seattle (SEA)United States

Destination:

Sydney (SYD)Australia

Return flight deals:

Sydney - Seattle

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