SJU - SEA

$223 Find Cheap Flights from San Juan to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to Seattle departing on 9/24. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Seattle, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$525
Typical prices: $682-$557
Delta
Sat 7/4Sat 7/25
SJU - SEA • 2 stops
Cheapest one-way
$223
Typical prices: $201-$308
JetBlue
Thu 9/24
SJU - SEA • 1 stop
Top airlines
Cheapest • from $525 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Juan and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $514 (round-trip)
Shortest trip • 10h 58m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Juan to Seattle (SJU-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to Seattle 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Juan to Seattle

Sat, Jul 4 - Sat, Jul 25
Delta Logo
12:54 pm - 11:59 pm
SJU
-
SEA
14h 05m
2 stops
Delta Logo
6:05 pm - 1:32 pm
SEA
-
SJU
16h 27m
2 stops
$525Delta
Mon, Jul 6 - Wed, Jul 15
American Airlines Logo
12:59 am - 9:27 am
SJU
-
SEA
11h 28m
1 stop
American Airlines Logo
5:10 am - 10:59 pm
SEA
-
SJU
14h 49m
1 stop
$531American Airlines
Wed, Aug 26 - Mon, Sep 7
American Airlines Logo
1:38 pm - 11:50 pm
SJU
-
SEA
13h 12m
2 stops
American Airlines Logo
11:59 pm - 4:03 pm
SEA
-
SJU
13h 04m
2 stops
$544American Airlines
Wed, Aug 26 - Mon, Sep 7
American Airlines Logo
1:38 pm - 11:59 pm
SJU
-
SEA
13h 21m
2 stops
American Airlines Logo
11:16 pm - 2:38 pm
SEA
-
SJU
12h 22m
2 stops
$545American Airlines
Wed, Aug 26 - Mon, Sep 7
American Airlines Logo
6:00 am - 4:41 pm
SJU
-
SEA
13h 41m
2 stops
American Airlines Logo
11:59 pm - 4:03 pm
SEA
-
SJU
13h 04m
2 stops
$546American Airlines
Wed, Aug 26 - Mon, Sep 7
American Airlines Logo
6:00 am - 4:41 pm
SJU
-
SEA
13h 41m
2 stops
American Airlines Logo
11:56 pm - 4:03 pm
SEA
-
SJU
13h 07m
2 stops
$548American Airlines
Wed, Aug 26 - Mon, Sep 7
American Airlines Logo
6:00 am - 4:41 pm
SJU
-
SEA
13h 41m
2 stops
American Airlines Logo
11:56 pm - 4:03 pm
SEA
-
SJU
13h 07m
2 stops
$549American Airlines
Thu, Aug 20 - Wed, Sep 2
Southwest Logo
10:00 am - 8:45 pm
SJU
-
SEA
13h 45m
2 stops
Southwest Logo
6:40 am - 9:05 pm
SEA
-
SJU
11h 25m
2 stops
$556Southwest
Thu, Jul 30 - Mon, Aug 10
Southwest Logo
10:20 am - 9:50 pm
SJU
-
SEA
14h 30m
2 stops
Southwest Logo
7:25 pm - 11:00 am
SEA
-
SJU
12h 35m
2 stops
$560Southwest
Sat, Aug 29 - Sun, Sep 6
Delta Logo
7:00 am - 10:05 pm
SJU
-
SEA
18h 05m
2 stops
Delta Logo
5:45 am - 10:29 pm
SEA
-
SJU
13h 44m
2 stops
$561Delta
Booking Insights

KAYAK's insights & trends for San Juan to Seattle flights

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

How much is a round-trip flight from San Juan Luis Munoz Marin Intl Airport to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Juan Luis Munoz Marin Intl Airport to Seattle departing in August.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Seattle, 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 San Juan Luis Munoz Marin Intl Airport to Seattle is February, where tickets cost $384 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $608 and $599 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Juan Luis Munoz Marin Intl Airport to Seattle, you should book around 4 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$223
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from San Juan to Seattle

When to book flights from San Juan to Seattle

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

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

    In the last 7 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Seattle was $223 for a one-way ticket and $525 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Juan and on arrival in Seattle.

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

    San Juan and Seattle are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at Seattle/Tacoma Intl.

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

    The Boeing 737-900 is the aircraft model that flies most regularly on the San Juan to Seattle flight route.

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

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

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

    The two airlines most popular with KAYAK users for flights from San Juan to Seattle are Delta and Southwest. With an average price for the route of $764 and an overall rating of 7.9, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $586 and an overall rating of 7.9.

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

    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 San Juan to Seattle.

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

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

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

    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 Seattle from San Juan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from San Juan to Seattle

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Seattle. 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 San Juan to Seattle? 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.
7.9
SouthwestOverall score based on 4264 reviews
7.0Food
8.0Comfort
8.1Boarding
8.6Crew
7.5Entertainment
Airline reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

4.0 OkayAnonymous, May 2026
MDW - LAX
Read more Southwest reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

I'm glad it wasn't only 75% full because I could get a good seat

if I was good. Not happy that I have to pay extra money to get the seat I need for lake room, but I guess that’s a sign of the times.

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Flight was delayed. Then eventually cancelled. The female staff that was announcing overhead was unprofessional. She was telling everyone that the company is not going to give any money for taxi, hotel etc. then eventually the flight was cancelled.

My service light was on 15 minutes before I had to get up and find a glass of ice. And I was in business class. The meals were not for either my wife and I. She did not eat the entire 10 hour flight and I managed a bowl of soup. I was expecting much more from business with what we paid.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Uncomfortable plastic seats even in premium economy. No free wifi. Even paid wifi was spotty to nonexistent. Bad food. Much worse than economy on foreign carriers like Qantas.

How can you rate a flight when it is canceled after you leave the gate & 3 hours into sitting there or in remote area of airport after mechanical problems

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Broken tray table. Erratic service. Premium economy is more economy than premium- other airlines treat PE much better. No lounge access.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

Movies on my phone are great. It would be nice to have a gluten free snack option.

It was what i expected. I like the movies you can access from your phone. It would be nice if there was a gluten free snack offered. But I did bring my own snack knowing there would not be a gluten free option

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The flight attendants were very friendly, efficient, and helpful. The plane was ahead of schedule, and it all went very smoothly. Thank you.

They lost my baggage and I am still struggling to the information and update

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

It was fine for what it was. It’s not luxury travel but it was efficient, for the most part. Having my carry-on transferred into luggage however, was unwelcome.

Jet blue is always good - the one weird thing was that they started boarding about 20-30 minutes before the official boarding time on the app. Just something to be aware of!

We had better-than-average leg room and I loved the access to shows and movies. During boarding, we could not hear the agent even though we were close to the boarding door, which was kind of scary when we realized that half of the passengers had already boarded. Also, the entertainment was awesome, but I could not hear the movie as well as I would have liked, because my headphones were crappy. It would have been better if I could connect my own ear buds via Bluetooth or if JetBlue provided headphones.

On time, friendly attendants, quick wheelchair assistance and help checking in bags. Also appreciated change in seats, more forward to make it easier for my 97 year old mother to board and exit the plane. Thank you, JetBlue!

Flight did not have onboard charging and TV screen flickering.

I was seated next to an autistic child who was out of control and had a child behind me kicking my seat for most of the trip. I will never fly JetBlue again. Ever. I don't care how cheap it is. It's terrible.

Boarding process was terrible. No assigned seat until the gate, then a long line to get seat assignment.

This was the first flight I've taken since pre-pandemic. I was pleased with how orderly the boarding and disembarking went. The seats were comfortable. I loved that there was no "first class'. The attendants and passengers I met were all very friendly and welcoming.

Boarding was easy. Provided drinks and snacks. Good aircraft and staff

Not very happy because of the long delaying which causes our luggages were not on the connection flight and nearly missed our connection flight.

Everything you need to know for your flight from San Juan to Seattle

Information on your arrival and departure airports