SJU - SEA

$141 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 4/29. 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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$395
Overall average: $515
Delta
Thu 4/30Fri 5/8
SJU - SEA • 1 stop
Cheapest one-way
$141
Typical prices: $221-$469
Frontier
Wed 4/29
SJU - SEA • 2 stops
Top airlines
Delta
Cheapest • from $395 (round-trip)
Delta
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
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Insights
Top layover airports
Newark (EWR)
Cheapest • Avg $546 (round-trip)
Washington, D.C. (IAD)
Shortest trip • 10h 57m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
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Insights
When to travel
February
Cheapest • 27% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Thu, Apr 30 - Fri, May 8
Delta Logo
2:45 pm - 11:53 pm
SJU
-
SEA
12h 08m
1 stop
Delta Logo
7:30 am - 10:17 pm
SEA
-
SJU
11h 47m
1 stop
$395Delta
Fri, May 8 - Sat, May 16
Delta Logo
2:25 pm - 12:12 am
SJU
-
SEA
12h 47m
2 stops
Delta Logo
6:00 am - 10:17 pm
SEA
-
SJU
13h 17m
1 stop
$414Delta
Thu, Apr 23 - Sat, May 2
Multiple Airlines Logo
6:00 am - 5:52 pm
SJU
-
SEA
38h 52m
3 stops
Multiple Airlines Logo
2:52 pm - 2:01 am
SEA
-
SJU
32h 09m
2 stops
$415Multiple Airlines
Fri, May 1 - Fri, May 8
Multiple Airlines Logo
11:30 am - 9:47 pm
SJU
-
SEA
13h 17m
1 stop
Multiple Airlines Logo
4:20 pm - 12:29 am
SEA
-
SJU
29h 09m
3 stops
$420Multiple Airlines
Fri, Apr 24 - Sat, May 2
American Airlines Logo
6:00 am - 9:23 pm
SJU
-
SEA
18h 23m
1 stop
American Airlines Logo
6:19 pm - 9:13 am
SEA
-
SJU
11h 54m
2 stops
$423American Airlines
Fri, Apr 24 - Sat, May 2
American Airlines Logo
3:10 pm - 12:36 am
SJU
-
SEA
12h 26m
1 stop
American Airlines Logo
6:19 pm - 9:13 am
SEA
-
SJU
11h 54m
2 stops
$424American Airlines
Tue, Apr 21 - Fri, May 1
Multiple Airlines Logo
3:08 am - 9:10 pm
SJU
-
SEA
21h 02m
2 stops
Multiple Airlines Logo
7:12 pm - 12:29 am
SEA
-
SJU
26h 17m
3 stops
$427Multiple Airlines
Tue, Mar 17 - Tue, Mar 31
Multiple Airlines Logo
1:59 am - 10:00 pm
SJU
-
SEA
47h 01m
2 stops
Multiple Airlines Logo
8:05 am - 1:19 am
SEA
-
SJU
14h 14m
1 stop
$435Multiple Airlines
Tue, Mar 17 - Tue, Mar 31
Multiple Airlines Logo
1:59 am - 10:00 pm
SJU
-
SEA
47h 01m
2 stops
Multiple Airlines Logo
8:05 am - 1:19 am
SEA
-
SJU
14h 14m
1 stop
$440Multiple Airlines
Wed, Mar 18 - Tue, Mar 31
Multiple Airlines Logo
6:39 pm - 10:00 pm
SJU
-
SEA
30h 21m
1 stop
Multiple Airlines Logo
8:05 am - 1:19 am
SEA
-
SJU
14h 14m
1 stop
$442Multiple Airlines
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.

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 $663 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 3 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$141
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 3% lower on average.
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 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Seattle was $141 for a one-way ticket and $395 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 United Airlines?

    The two airlines most popular with KAYAK users for flights from San Juan to Seattle are Delta and United Airlines. With an average price for the route of $674 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $516 and an overall rating of 7.4.

  • 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 4 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
DeltaOverall score based on 8237 reviews
7.8Entertainment
8.5Crew
7.9Comfort
8.1Boarding
7.2Food
Airline reviews

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

10.0 ExcellentBob, Feb 2026
FLL - MSP
Read more Delta reviews

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

Given I (and I’m assuming most people) have both carry in and a personal item included in their fare, I find it very unfair that on neither of my flights I was able to use the overhead for my small backpack because they were completely rammed with luggage, people personal items, jackets, hats and other items. So the only item I brought in had to be stuffed under my seat while they had their leg room and sat comfortable with all of their items in the overhead. This has to stop because I was uncomfortable on both flights when I only had one smaller item that could not be checked due to its contents (medication etc). Plenty of people could have checked theirs but chose not to and then took up the space allotment for 2 people.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

I couldn’t make my first flight due to weather delays trapping us in the town we were in. Then I had to buy a new ticket

Flight attendants had a little attitude. Food tastes no good.

Chargers didn’t work, no entertainment and we had to wait for taxiing for easily 40 minutes after arriving early. Bags were late too!

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Worst experience ever. Flight could not land in Charlotte for what we were told was a ground stop. Had to be diverted to Raleigh to refuel. Strangely during ground stop, our connecting flight had no issue taking off on time causing us to miss our flight. We were told there were no other flights that day to our final destination and that two days out was the next one. The only flights to get us there were from Chicago the next morning. Completely opposite direction but it was a direct flight. So we get flown to Chicago and have to find a hotel in our own dime. The flight in the morning was also delayed. Thankfully only a short time. The non too of all this, our luggage did not arrive by the time we were there. Communication was terrible, through the entire trip. Complete incompetence. Will never fly American again.

I am an AA flyer for a very long time... AA has yet to disappoint.

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

We were delayed and due to lateness we were traveling from 11pm we were rerouted to FLL and couldnt deplane but stayed on the plane with no extra Service given (extra good options etc$ there Were so many things that could go wrong and did. This was not an enjoyable experience at all thoroughly exhausting

Never ontime and always delays. Long waits for customer service and often app doesn’t work

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

It was a pretty smooth flight, I tend to get mini anxiety attacks during flights, however, this time was pretty smooth and I was able to relax. The only thing, I was having issues to connect to the Flyfi internet. I was not able to connect at all, I turned off my phone a couple times and didnt work.

Both flights were significantly delayed. The flight experience itself was great.

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

Very smooth flight, good legroom with the "even more room" seats. Entertainment choice was excellent, wifi on board, plane was modern. Pilot got a round of applause for a smooth landing in very blustery conditions. Love flying with them. Check in was OK too. We were too early so we had to wait until groundstaff showed up 3hrs before the flight.

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

No included food for a 5 hour flight and the entertainment was only accessible if you had wired headphones (not provided). Otherwise though, great and smooth flying and customer service.

They initially informed us that the flight was delayed, but only after waiting an hour for updates. In any event, the flight was canceled, but the way it was handled was really poor and egregious. I feel they handled the situation of informing travelers very irresponsibly. I sat in a wheelchair at the airport for over four hours before finally being told that the flight was canceled.

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

Information on your arrival and departure airports