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SEA - SJU

$135 Find cheap flights from Seattle to San Juan

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 San Juan departing on 8/7. 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 7/6
sáb 7/13

Search hundreds of travel sites at once for deals on flights to San Juan

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Juan.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Juan.
In the last 7 days travelers have searched 43,995,393 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to San Juan (SEA-SJU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to San Juan 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
5:30 am - 11:51 amSEA-SJU
27h 21m2 stops
8:50 pm - 1:11 pmSJU-SEA
19h 21m2 stops
$269Spirit Airlines
Find Deal
seg, ago 26 - ter, ago 27
10:15 pm - 11:10 amSEA-SJU
9h 55m1 stop
11:59 am - 8:43 pmSJU-SEA
11h 44m1 stop
$282American Airlines
Find Deal
ter, out 8 - qua, out 16
7:49 pm - 3:07 pmSEA-SJU
16h 18m2 stops
4:11 pm - 7:05 amSJU-SEA
17h 54m2 stops
$289Frontier
Find Deal
qui, jul 4 - qui, jul 11
8:12 pm - 2:51 pmSEA-SJU
15h 39m2 stops
4:07 pm - 7:06 amSJU-SEA
17h 59m2 stops
$308Frontier
Find Deal
ter, jun 18 - ter, jun 25
10:45 pm - 2:49 pmSEA-SJU
13h 04m1 stop
8:50 pm - 2:54 pmSJU-SEA
21h 04m2 stops
qui, ago 22 - ter, ago 27
11:59 pm - 3:19 pmSEA-SJU
12h 20m1 stop
8:50 pm - 6:15 pmSJU-SEA
24h 25m2 stops
sex, ago 23 - ter, ago 27
7:00 pm - 12:05 pmSEA-SJU
14h 05m2 stops
1:05 am - 11:23 amSJU-SEA
13h 18m1 stop
$372United Airlines
Find Deal
seg, out 21 - ter, out 29
7:12 am - 8:35 pmSEA-SJU
10h 23m1 stop
1:05 am - 10:48 amSJU-SEA
12h 43m1 stop
$381United Airlines
Find Deal
sáb, out 5 - ter, out 15
9:15 pm - 1:19 pmSEA-SJU
13h 04m1 stop
12:56 pm - 11:53 pmSJU-SEA
13h 57m1 stop
$454Delta
Find Deal
sex, ago 23 - sex, ago 30
9:15 pm - 1:19 pmSEA-SJU
13h 04m1 stop
12:56 pm - 11:53 pmSJU-SEA
13h 57m1 stop
$474Delta
Find Deal
dom, ago 25 - sáb, ago 31

Flights from Seattle to San Juan - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to San Juan 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 San Juan?

The average price of all flights from Seattle to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to San Juan on a Monday and more expensive on a Thursday. On your return trip to Seattle, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

What is the cheapest month to fly from Seattle to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to San Juan Luis Munoz Marin Intl Airport, 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 San Juan Luis Munoz Marin Intl Airport is January, where tickets cost $371 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $828 and $686 respectively.

How far in advance should I book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to San Juan Luis Munoz Marin Intl Airport, 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 San Juan Luis Munoz Marin Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 66 days before departure.

Which airlines provide the cheapest flights from Seattle to San Juan?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to San Juan from Seattle were found on Frontier ($135) and American Airlines ($141), and the lowest round-trip tickets were found on Spirit Airlines ($269) and American Airlines ($282).

Good to know

Low season

October

High season

December

Cheapest flight

$135
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Seattle to San Juan

When to book flights from Seattle to San Juan

Are your dates flexible? Find out the best times to travel from Seattle to San Juan 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 Seattle to San Juan flights

  • What is the cheapest flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to San Juan Luis Munoz Marin Intl Airport was $135 for a one-way ticket and $269 for a round-trip.

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

    Yes

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

    On your way to San Juan, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from Seattle to San Juan?

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

  • Which airline alliances offer flights from Seattle to San Juan?

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

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

    Charlotte is the most popular layover city among KAYAK users traveling from Seattle to San Juan.

  • Which is the best airline for flights from Seattle to San Juan, Delta or JetBlue?

    The two airlines most popular with KAYAK users for flights from Seattle to San Juan are Delta and JetBlue. With an average price for the route of $686 and an overall rating of 8.0, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of $584 and an overall rating of 7.6.

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

    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 San Juan.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan 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 San Juan?

    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 San Juan with an airline and back to Seattle with another airline. Booking your flights between Seattle and SJU 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 San Juan?

    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 San Juan from Seattle 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 Seattle to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San Juan. 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 San Juan? 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
Alaska AirlinesOverall score based on 9222 reviews
8.2Boarding
7.9Comfort
7.3Entertainment
7.3Food
8.6Crew
Airline reviews

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

8.0 ExcellentAnonymous, Jun 2024SEA - DFW
Read more about Alaska Airlines reviews

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

Great. They got us on an earlier flight. Really appreciated that

I had very little legroom and the only food available was really salty

Offer snacks/meals for people with food sensitivities. HAVE TV SCREENS!

Cabin crew very friendly and pleasant. Flight left late but we didn't know why. Alaska Airlines app was not user friendly -- app wouldn't let us upgrade our seats, but no indication if flight was full. We wound up having to call the airline to request an upgrade and we were told none was available. Waste of time. Baggage retrieval was easy.

The boarding gate is literally just an aisle to the concourse. There is no seating and it's shared with several other airlines. It's crowded, hot, and standing-room only. It's difficult to hear gate announcements over the PA system with too many other carriers crammed into a small space. I've enjoyed flying AA in the past on the west coast, but the BNA single gate experience is horrendous! Never again from BNA to SEA with AA.

It was a partial full flight. But even with a spare seat it was hard to get comfortable More on me being a wide body probably

Our flights using Alaska Airlines went great! All of the flight attendants were very friendly. Big shout out to the pilots for getting us to and from our destinations safely!

I can’t complain. Perhaps passing out headphones, but it was on me to bring my own since I could have used some for my personal device.

I liked only the crew. The flyght was too much fast, faster than it should be, on 20 min faster, but not safer, I experienced on myself astranautic overload from suddenly appearing in the sky and all the vibrations of the turbines, because I had my place at the level of the wings. Pregnant woman should not be seated on the level of the wings with all turbines, pregnant woman should be offered to charge place to seat closer to front or in the back, but not at the level of all the turbines. Vibrations of turbines are not healthy for pregnancy. I hold all the flight my belly in my hands to avoid miscarriage. If it would be longer flying distances, I could have miscarriage with Alaskan airlines.

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

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.

terrible. Because I felt very unwell during the flight. How do they leave a woman alone in the middle of 2 men? an obese man who was falling on top of me.

They put me on a chair in between two men, one overweight who was almost falling on top of me, and the other was even uncomfortable because I was half falling because of what the other was pushing me. I stayed with. my feet were swollen from fluid retention and from being unable to accommodate myself. it was very uncomfortable. I asked for help but they told me that the flight was full and they couldn't help me. I got off the plane almost unable to walk due to the inflammation. and then at FLL airport I asked for help because I couldn't go to my next flight, which was a connection.

The walk from baggage claim to the taxi is very difficult for older people I will never fly into JFK again. It is physically challenging

Overall fine but both ways for this trip was delayed.

Flight was delayed by almost 5 hours. Suitcase was not loaded despite the flight being near empty (my colleagues’ suitcases did reach JFK, unlike mine). Had to argue on phone to get JetBlue to deliver the case to my hotel. Never again

The flight was excellent. The crew was welcoming and attentive.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

Run out of snack choices. Why are the seats not padded for your butt? Are we sitting on blocks of wood or metal for $250-300 a pop? This ain’t spirit. Let’s get it together people

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the premium paid for the first class ticket

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

I had a great flight. Everything went smoothly and the flight arrived early.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Missed this flight due to the first AA flight delay

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

Wretched scheduling - they got themselves into a critical crew situation and didn’t try to address it until 15 minutes before they had to cancel my flight

They cancelled two flight and got us onto another airline, which was also delayed.

Book cheap flights from Seattle to San Juan

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to San Juan found on KAYAK in the last 72 hours.
8/7qua
1 stopFrontier
9h 45mSEA-SJU
$135
8/19seg
2 stopsAmerican Airlines
12h 26mSEA-SJU
$141
10/2qua
2 stopsSpirit Airlines
23h 37mSEA-SJU
$160
8/23sex
2 stopsSpirit Airlines
21h 30mSEA-SJU
$172
11/12ter
2 stopsUnited Airlines
13h 47mSEA-SJU
$186
8/20ter
1 stopDelta
13h 07mSEA-SJU
$227
8/25dom
2 stopsDelta
18h 32mSEA-SJU
$233
8/4dom
1 stopUnited Airlines
12h 38mSEA-SJU
$252
6/15sáb
1 stopJetBlue
13h 15mSEA-SJU
$294
6/14sex
1 stopJetBlue
13h 25mSEA-SJU
$343

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Last minute flights from Seattle to San Juan

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 San Juan that are departing in the next 10 days.
6/10seg
multi-stopSpirit Airlines
18h 58mSEA-SJU
6/12qua
multi-stopSpirit Airlines
31h 59mSJU-SEA
$539
6/10seg
multi-stopSpirit Airlines
18h 58mSEA-SJU
6/13qui
multi-stopSpirit Airlines
35h 49mSJU-SEA
$542
6/10seg
multi-stopSpirit Airlines
18h 58mSEA-SJU
6/13qui
multi-stopSpirit Airlines
35h 49mSJU-SEA
$551
6/9dom
multi-stopFrontier
26h 09mSEA-SJU
6/11ter
multi-stopFrontier
17h 59mSJU-SEA
$555
6/10seg
multi-stopSpirit Airlines
25h 10mSEA-SJU
6/12qua
multi-stopSpirit Airlines
31h 59mSJU-SEA
$566
6/8sáb
multi-stopAmerican Airlines
20h 01mSEA-SJU
6/13qui
multi-stopAmerican Airlines
13h 45mSJU-SEA
$631
6/9dom
multi-stopAmerican Airlines
19h 51mSEA-SJU
6/11ter
multi-stopAmerican Airlines
13h 45mSJU-SEA
$668
6/9dom
multi-stopUnited Airlines
11h 04mSEA-SJU
6/12qua
multi-stopUnited Airlines
18h 03mSJU-SEA
$754
6/8sáb
multi-stopDelta
14h 09mSEA-SJU
6/11ter
multi-stopDelta
17h 10mSJU-SEA
$799
6/10seg
multi-stopUnited Airlines
11h 43mSEA-SJU
6/12qua
multi-stopUnited Airlines
18h 03mSJU-SEA
$814

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Seattle - San Juan Flights

Departure:

Seattle (SEA)United States

Destination:

San Juan (SJU)Puerto Rico

Return flight deals:

San Juan - Seattle

Cabin classes: