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SEA - SJU

$134 Find cheap flights from Seattle to San Juan Luis Munoz Marin Intl Airport

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 5/10. 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 5/25
Sat 6/1

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 44,979,812 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
11:59 pm - 2:43 pmSEA-SJU
11h 44m1 stop
4:03 pm - 11:20 pmSJU-SEA
10h 17m1 stop
$332American Airlines
Find Deal
Wed, Sep 4 - Wed, Sep 11
8:31 pm - 3:40 pmSEA-SJU
16h 09m1 stop
6:00 am - 10:29 pmSJU-SEA
19h 29m1 stop
$333American Airlines
Find Deal
Tue, May 28 - Fri, Jun 7
9:40 pm - 2:11 amSEA-SJU
25h 31m2 stops
1:30 am - 8:29 pmSJU-SEA
21h 59m2 stops
$359Spirit Airlines
Find Deal
Fri, May 31 - Mon, Jun 3
9:35 am - 4:45 pmSEA-SJU
28h 10m2 stops
1:27 am - 7:36 pmSJU-SEA
21h 09m3 stops
$375Spirit Airlines
Find Deal
Wed, May 29 - Tue, Jun 4
4:25 pm - 12:05 pmSEA-SJU
16h 40m2 stops
1:05 am - 10:47 amSJU-SEA
12h 42m1 stop
$423United Airlines
Find Deal
Tue, Sep 10 - Mon, Sep 23
8:40 pm - 9:56 amSEA-SJU
10h 16m1 stop
12:30 pm - 9:59 pmSJU-SEA
12h 29m1 stop
$425JetBlue
Find Deal
Mon, Jun 3 - Thu, Jun 13
8:40 pm - 10:11 amSEA-SJU
10h 31m1 stop
10:40 am - 10:49 pmSJU-SEA
15h 09m1 stop
$430JetBlue
Find Deal
Tue, Jun 4 - Tue, Jun 11
11:38 pm - 1:45 pmSEA-SJU
11h 07m1 stop
1:40 pm - 10:50 pmSJU-SEA
12h 10m1 stop
$438United Airlines
Find Deal
Mon, May 20 - Wed, May 29
12:40 am - 4:22 pmSEA-SJU
12h 42m2 stops
12:40 pm - 10:25 pmSJU-SEA
12h 45m1 stop
$535Delta
Find Deal
Tue, Jun 4 - Wed, Jun 12
6:00 am - 9:56 pmSEA-SJU
12h 56m1 stop
12:49 pm - 12:15 amSJU-SEA
14h 26m1 stop
$537Delta
Find Deal
Sun, May 26 - Sat, Jun 1

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 $391 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $890 and $863 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 86 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 Spirit Airlines ($134) and American Airlines ($141), and the lowest round-trip tickets were found on American Airlines ($332) and Spirit Airlines ($359).

Good to know

Low season

October

High season

December

Cheapest flight

$134
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 12% 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 $134 for a one-way ticket and $332 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 $755 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 $643 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 9114 reviews
7.3food
8.6crew
7.3entertainment
8.2boarding
7.9comfort
Airline reviews

It was a full flight without any issues or stress. Really surprised with how so many flights seem to have issues nowadays.

10.0 ExcellentAnonymous, Apr 2024SEA - SLC
Read more about Alaska Airlines reviews

It was a full flight without any issues or stress. Really surprised with how so many flights seem to have issues nowadays.

You guys did great, the only thing keeping me from the higher rating is the physical dimensions of the seats, which staff has no control over. Keep up the good job.

Flight was good. Glad it was delayed or I may have missed the connection since I got to Seattle at about the same time my connection was to leave. The snack was a small bag of pretzels and a small soda. Can’t really call that food. There was no entertainment available on the flight.

Same as the earlier flight. Bad boarding practices, uncomfortable seats, and no Wi-Fi service.

Everything was good. One of the flight attendants was not very friendly

Text and wifi were paywalled. I'm not looking for something fast, but not getting a text for ride coordination until back at the gate was a pain.

It was not a great flight. There was a software update delay which had us on the ground for almost 2 hours. I was unable to make my shuttle to my final destination.

Good. Quiet. Comfortable. The protests nearly kept me from catching my flight. They waited for me! I made it!

Red eye flight, so not expecting any extras, but the boarding and trip was smooth. Thx Alaska.

Received little assistance with air sick child. Crew’s main concern was if anything got on the seat belt!

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.

When we checked in my friend and I were sitting seperate. By the time we got to boarding, they automatically switched our seats. I really liked that.

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

at the time for boarding the lady just call Group A and no other goups and everybody from A to F go inside without the right turn,and when we get in theres no more spsce for carry on , the ones that get in at not correct group from the back occupy our space !!!!! a mess !!!!

There were multiple delays but JetBlue tried to make the boarding and departure process as quick and efficient as possible. The crew was as detached from reality as could be, meaning: not very friendly and just doing things by the numbers.

I had back trouble prior to my flight and everyone was great about helping me.

Jetblue needs to improve on Onboarding as it seems to always be behind on departing. It never leaves on time. I would recommend to have an earlier Onboarding in order to leave on time and respect your customers time as well.

40 minute delay before take off after boarding flight. Bright lights throughout night flight due Issues with light panels. In flight Entertainment nonfunctional

Nothing beats ANA customer service on my opinion. Maybe because of their Japanese culture (and food). Arigatō

So so. Terrible aircraft choice for that leg of the flight.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

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.
5/10Fri
2 stopsSpirit Airlines
19h 44mSEA-SJU
$134
5/20Mon
1 stopAmerican Airlines
17h 09mSEA-SJU
$141
9/9Mon
1 stopUnited Airlines
12h 20mSEA-SJU
$186
5/10Fri
1 stopSun Country Air
18h 52mSEA-SJU
$205
5/10Fri
1 stopSun Country Air
18h 52mSEA-SJU
$209
5/19Sun
2 stopsDelta
11h 04mSEA-SJU
$227
5/4Sat
1 stopJetBlue
12h 56mSEA-SJU
$232
5/12Sun
2 stopsDelta
12h 45mSEA-SJU
$308
7/13Sat
1 stopJetBlue
13h 23mSEA-SJU
$382
7/12Fri
1 stopUnited Airlines
20h 21mSEA-SJU
$431

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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.
4/29Mon
multi-stop
28h 29mSEA-SJU
5/6Mon
multi-stop
39h 48mSJU-SEA
$431
4/29Mon
multi-stop
30h 05mSEA-SJU
5/6Mon
multi-stop
39h 48mSJU-SEA
$469
4/29Mon
multi-stopAmerican Airlines
10h 15mSEA-SJU
5/3Fri
multi-stopAmerican Airlines
11h 40mSJU-SEA
$587
4/30Tue
multi-stopJetBlue
13h 18mSEA-SJU
5/7Tue
multi-stopJetBlue
12h 56mSJU-SEA
$629
4/29Mon
multi-stopJetBlue
13h 32mSEA-SJU
5/3Fri
multi-stopJetBlue
15h 09mSJU-SEA
$643
4/30Tue
multi-stopDelta
12h 45mSEA-SJU
5/11Sat
multi-stopDelta
12h 14mSJU-SEA
$671
4/30Tue
multi-stopAmerican Airlines
13h 24mSEA-SJU
5/1Wed
multi-stopAmerican Airlines
16h 26mSJU-SEA
$684
4/30Tue
multi-stopUnited Airlines
12h 38mSEA-SJU
4/30Tue
multi-stopUnited Airlines
13h 01mSJU-SEA
$685
4/30Tue
multi-stopDelta
12h 45mSEA-SJU
5/11Sat
multi-stopDelta
14h 40mSJU-SEA
$696
4/27Sat
multi-stopUnited Airlines
13h 40mSEA-SJU
5/3Fri
multi-stopUnited Airlines
12h 27mSJU-SEA
$755

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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: