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STL - SYD

$918 Find cheap flights from St. Louis 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 St. Louis to Sydney departing on 8/14. 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
sáb 6/29
sáb 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 St. Louis to Sydney.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis 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 St. Louis to Sydney (STL-SYD)

 
These are the cheapest deals for flights from St. Louis to Sydney currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from St. Louis to Sydney

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Sydney.

Recent one-way flight deals from St. Louis to Sydney

Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Sydney found on KAYAK recently.

Recent last minute flight deals from St. Louis to Sydney

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from St. Louis to Sydney.

Recent direct flight deals from St. Louis to Sydney

The latest deals for direct flights from St. Louis to Sydney so you can sit back and relax without the need for a layover.

Cheap bus & train deals from St. Louis to Sydney

Find recent round-trip train or bus tickets from St. Louis to Sydney.

All round-trip flight deals to Sydney

The cheapest plane tickets to Sydney found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:08 am - 6:55 amSTL-SYD
30h 47m2 stops
10:20 am - 5:03 pmSYD-STL
21h 43m1 stop
$1,330United Airlines
Find Deal
qua, ago 14 - ter, set 3
4:36 pm - 7:00 amSTL-SYD
47h 24m2 stops
10:20 am - 7:37 pmSYD-STL
24h 17m2 stops
$1,396United Airlines
Find Deal
sáb, jul 6 - sáb, jul 27
12:00 pm - 7:20 amSTL-SYD
52h 20m3 stops
9:20 am - 3:20 pmSYD-STL
45h 00m2 stops
$1,423Air Canada
Find Deal
qua, ago 14 - ter, set 3
6:29 am - 8:10 amSTL-SYD
34h 41m1 stop
5:35 pm - 10:58 pmSYD-STL
20h 23m1 stop
$1,426Qantas Airways
Find Deal
qui, jun 27 - qui, jul 4
12:00 pm - 7:20 amSTL-SYD
52h 20m3 stops
9:20 am - 3:21 pmSYD-STL
45h 01m2 stops
$1,465Air Canada
Find Deal
sex, ago 16 - sex, ago 23
6:29 am - 7:05 amSTL-SYD
33h 36m1 stop
9:15 am - 9:48 amSYD-STL
39h 33m2 stops
$1,582American Airlines
Find Deal
qui, jun 27 - qui, jul 4
6:29 am - 8:10 amSTL-SYD
34h 41m1 stop
5:35 pm - 11:07 pmSYD-STL
20h 32m1 stop
$1,659Qantas Airways
Find Deal
seg, jul 1 - sáb, jul 6
5:03 pm - 8:45 amSTL-SYD
24h 42m2 stops
6:10 pm - 10:17 pmSYD-STL
43h 07m2 stops
$1,861Air New Zealand
Find Deal
seg, jul 8 - dom, jul 14
6:00 pm - 7:00 amSTL-SYD
22h 00m1 stop
8:45 am - 9:51 amSYD-STL
40h 06m2 stops
$1,867Air New Zealand
Find Deal
sex, ago 23 - qua, ago 28
3:27 pm - 7:05 amSTL-SYD
24h 38m2 stops
9:15 am - 11:07 pmSYD-STL
28h 52m1 stop
$1,912American Airlines
Find Deal
seg, jul 1 - sáb, jul 6
11:36 am - 11:45 amSTL-SYD
33h 09m3 stops
qua, ago 14
11:10 am - 10:35 amSTL-SYD
32h 25m2 stops
$1,094Air New Zealand
Find Deal
qua, ago 14
4:18 pm - 6:15 amSTL-SYD
22h 57m1 stop
$1,215Qantas Airways
Find Deal
qua, ago 14
4:55 pm - 8:45 amSTL-SYD
24h 50m2 stops
11:50 am - 8:25 pmSYD-STL
23h 35m2 stops
$2,172Air New Zealand
Find Deal
dom, jun 2 - ter, jun 4
6:15 am - 8:45 amSTL-SYD
35h 30m2 stops
11:50 am - 10:15 pmSYD-STL
25h 25m2 stops
$2,183Air New Zealand
Find Deal
dom, jun 2 - ter, jun 4
6:02 pm - 7:05 amSTL-SYD
22h 03m1 stop
3:50 pm - 7:28 pmSYD-STL
18h 38m1 stop
$2,555Qantas Airways
Find Deal
dom, jun 2 - ter, jun 4
6:02 pm - 7:05 amSTL-SYD
22h 03m1 stop
5:15 pm - 10:58 pmSYD-STL
44h 43m2 stops
$2,691Qantas Airways
Find Deal
dom, jun 2 - ter, jun 4
6:02 pm - 7:05 amSTL-SYD
22h 03m1 stop
5:35 pm - 11:17 pmSYD-STL
20h 42m1 stop
$2,717
Find Deal
dom, jun 2 - ter, jun 4
6:02 pm - 8:10 amSTL-SYD
23h 08m1 stop
5:35 pm - 11:56 pmSYD-STL
21h 21m2 stops
$2,722
Find Deal
dom, jun 2 - ter, jun 4
1:42 pm - 8:45 amSTL-SYD
28h 03m3 stops
11:50 am - 8:25 pmSYD-STL
23h 35m2 stops
$3,064
Find Deal
dom, jun 2 - ter, jun 4
11:38 am - 7:20 amSTL-SYD
28h 42m3 stops
9:20 am - 9:05 pmSYD-STL
50h 45m3 stops
$15,170
Find Deal
dom, jun 2 - ter, jun 4

Flights from St. Louis to Sydney - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis 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 St. Louis to Sydney?

The average price of all flights from St. Louis 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, Wednesday is the most expensive day to fly from St. Louis to Sydney. For your return ticket, we recommend flying on a Monday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from St. Louis to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis 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 St. Louis to Sydney is February, where tickets cost $1,337 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $2,610 and $2,123 respectively.

How far in advance should I book a flight from St. Louis to Sydney?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis 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 St. Louis to Sydney, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 60 days before departure.

Which airlines provide the cheapest flights from St. Louis to Sydney?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to Sydney found on KAYAK was with Air New Zealand for $1,094. United Airlines proposed a round-trip connection from $1,330 and Air Canada from $1,423.

Good to know

Low season

July

High season

March

Cheapest flight

$918
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from St. Louis to Sydney

When to book flights from St. Louis to Sydney

Are your dates flexible? Find out the best times to travel from St. Louis 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 St. Louis to Sydney

  • What is the cheapest flight from St. Louis to Sydney?

    In the last 3 days, the lowest price for a flight from St. Louis to Sydney was $918 for a one-way ticket and $1,330 for a round-trip.

  • Do I need a passport to fly between St. Louis and Sydney?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Sydney.

  • Which aircraft models fly most regularly from St. Louis to Sydney?

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

  • Which airline alliances offer flights from St. Louis to Sydney?

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

  • What is the most popular layover when flying to Sydney from St. Louis?

    Los Angeles is the most popular layover city among KAYAK users traveling from St. Louis to Sydney.

  • Which is the best airline for flights from St. Louis to Sydney, Air New Zealand or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Sydney are Air New Zealand and Delta. With an average price for the route of $1,597 and an overall rating of 8.1, Air New Zealand is the most popular choice. Delta is also a great choice for the route, with an average price of $1,535 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from St. Louis 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 St. Louis to Sydney.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from St. Louis 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 St. Louis 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 St. Louis with another airline. Booking your flights between St. Louis 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 St. Louis 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 St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from St. Louis to Sydney

 
See real verified KAYAK customer reviews for airlines flying from St. Louis 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 St. Louis 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.
8.1
Air New ZealandOverall score based on 608 reviews
8.7Crew
8.4Boarding
7.9Entertainment
8.1Comfort
7.6Food
Airline reviews

Short flight so no entertainment, turbulence so no food service - overall flight as expected

8.0 ExcellentMichelle, Apr 2024NPL - AKL
Read more about Air New Zealand reviews

Short flight so no entertainment, turbulence so no food service - overall flight as expected

All was good, the only thing was it didn't run on time.

Great meal. Best seats ever! They need to teach other airlines how to do that.

Overall excellent but the Captain kept the seat belt sign on for far too long, especially at the beginning and end of the flight. It was 2 hours after take-off before the crew were able to start the service (on an 11 hour night flight, reducing our sleeping time) and the seat belt sign on went on during breakfast (90 mins before landing) and was not turned off again until we landed. This made for an uncomfortable journey of trying to limit fluid intake because it was unclear when the toilets would be available for use.

United flight from SFO to PDX was cancelled. I will ask for a refund. Had to book on Alaska

They announced food service but then never came around. We also couldn’t land so kept trying to get to runway and then had to come up and go around happened like 3 times and cause the child next to me to start throwing up

Good food and entertainment options. Great Staff that were all welcoming and caregiving.

The recline on the seat in front of me came back so that I was staring at the top of the man’s head in front of me the whole trip. He refused to bring his seat back up twice every time he was instructed to do so and only relented when he had a tray of good in front of him. And then right back in my lap!!! Horrible man!! I complained to the staff multiple times, but no one would address the issue. Otherwise, it would have been a perfect flight.

There was a snafu with confirming seats at check which left us in limbo for the second leg of our trip. I believe the ANZ app is not well integrated with the systems at the terminal resulting in this disconcerting error.

Flight was canceled due to technical issue shortly before the check-in counters opened. Passengers were rebooked on a flight three days later. Request to be accommodated on Air Tahiti Nui could not be processed. Customer service sorted out the refund after calling and being put on hold for almost an hour.

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.

Well....let's start from the point that I had to stay in airport for 12 hours instead of 2 that was scheduled. Poor company and even worst customer service. Never again....

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.

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

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 St. Louis to Sydney

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Sydney found on KAYAK in the last 72 hours.
8/14qua
3 stops
33h 09mSTL-SYD
$918
8/14qua
2 stopsAir New Zealand
32h 25mSTL-SYD
$1,094
8/14qua
1 stopQantas Airways
22h 57mSTL-SYD
$1,215

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Last minute flights from St. Louis 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 St. Louis to Sydney that are departing in the next 10 days.
6/2dom
multi-stopAir New Zealand
24h 50mSTL-SYD
6/4ter
multi-stopAir New Zealand
23h 35mSYD-STL
$2,172
6/2dom
multi-stopAir New Zealand
35h 30mSTL-SYD
6/4ter
multi-stopAir New Zealand
25h 25mSYD-STL
$2,183
6/2dom
multi-stopQantas Airways
22h 03mSTL-SYD
6/4ter
multi-stopQantas Airways
18h 38mSYD-STL
$2,555
6/2dom
multi-stopQantas Airways
22h 03mSTL-SYD
6/4ter
multi-stopQantas Airways
44h 43mSYD-STL
$2,691
6/2dom
multi-stop
22h 03mSTL-SYD
6/4ter
multi-stop
20h 42mSYD-STL
$2,717
6/2dom
multi-stop
23h 08mSTL-SYD
6/4ter
multi-stop
21h 21mSYD-STL
$2,722
6/2dom
multi-stop
28h 03mSTL-SYD
6/4ter
multi-stop
23h 35mSYD-STL
$3,064
6/2dom
multi-stop
28h 42mSTL-SYD
6/4ter
multi-stop
50h 45mSYD-STL
$15,170

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St. Louis - Sydney Flights

Departure:

St. Louis (STL)United States

Destination:

Sydney (SYD)Australia

Return flight deals:

Sydney - St. Louis

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