SJU - SEA

$168 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 10/31. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan 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.
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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, Nov 13 - Sun, Nov 16
United Airlines Logo
2:05 am - 12:39 pmSJU-SEA
14h 34m1 stop
United Airlines Logo
5:05 am - 6:25 pmSEA-SJU
9h 20m1 stop
$363United Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
American Airlines Logo
8:20 am - 8:39 pmSJU-SEA
16h 19m1 stop
American Airlines Logo
12:41 am - 5:52 pmSEA-SJU
13h 11m2 stops
$369American Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
American Airlines Logo
2:47 pm - 11:26 pmSJU-SEA
12h 39m1 stop
American Airlines Logo
12:41 am - 5:52 pmSEA-SJU
13h 11m2 stops
$370American Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
American Airlines Logo
2:47 pm - 11:26 pmSJU-SEA
12h 39m1 stop
American Airlines Logo
12:41 am - 5:52 pmSEA-SJU
13h 11m2 stops
$371American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
United Airlines Logo
2:25 pm - 11:10 pmSJU-SEA
12h 45m1 stop
United Airlines Logo
7:00 am - 12:36 amSEA-SJU
13h 36m2 stops
$387United Airlines
Find Deal
Mon, Dec 22 - Mon, Dec 29
Sun Country Air Logo
5:02 pm - 10:42 amSJU-SEA
21h 40m1 stop
Sun Country Air Logo
6:26 pm - 4:13 pmSEA-SJU
17h 47m1 stop
$402Sun Country Air
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Tue, Oct 28 - Tue, Nov 4
Southwest Logo
7:40 am - 7:50 pmSJU-SEA
15h 10m2 stops
Southwest Logo
5:40 am - 11:20 pmSEA-SJU
13h 40m2 stops
$406Southwest
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Fri, Oct 24 - Fri, Oct 31
Frontier Logo
9:19 pm - 12:07 pmSJU-SEA
17h 48m2 stops
Frontier Logo
2:22 pm - 2:42 pmSEA-SJU
21h 20m2 stops
$425Frontier
Find Deal
Mon, Dec 22 - Sun, Dec 28
Sun Country Air Logo
5:02 pm - 10:42 amSJU-SEA
21h 40m1 stop
Sun Country Air Logo
6:28 pm - 4:01 pmSEA-SJU
17h 33m1 stop
$437Sun Country Air
Find Deal
Fri, Oct 24 - Sat, Nov 1
Frontier Logo
1:59 am - 7:33 amSJU-SEA
32h 34m2 stops
Frontier Logo
12:58 pm - 3:19 pmSEA-SJU
23h 21m2 stops
$450Frontier
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $363 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 20% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$363
Typical prices: $450-$662
United Airlines
Thu 11/13Sun 11/16
SJU - SEA • 1 stop
Cheapest one-way
$168
Typical prices: $203-$366
Multiple Airlines
Fri 10/31
SJU - SEA • 1 stop
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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!
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 November.

What’s the cheapest day of the week to fly from San Juan to Seattle?

The average price of all round-trip flights from San Juan Luis Munoz Marin Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.

For San Juan to Seattle, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Seattle back to San Juan, the best deals are generally found on Tuesday, with Friday being the most expensive.

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 October, where tickets cost $417 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $690 and $600 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 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$168
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 4% 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 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Seattle was $168 for a one-way ticket and $363 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, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from San Juan to Seattle are Southwest and Delta. With an average price for the route of $661 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $652 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
DeltaOverall score based on 7969 reviews
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
Airline reviews

The crew was not very visible. This might be a good thing for people who wanted to sleep but seemed odd when compared to the Atlantic crossing where they are more present in the cabin. The Food (beef) was not good. Tough and tasteless. Would love to see more choices on a long flight like that.

8.0 ExcellentKathrin, Oct 2025SYD - LAX
Read more Delta reviews

The crew was not very visible. This might be a good thing for people who wanted to sleep but seemed odd when compared to the Atlantic crossing where they are more present in the cabin. The Food (beef) was not good. Tough and tasteless. Would love to see more choices on a long flight like that.

The flight was great. The gate location was way to far away!!!

This was our second flight using the Delta One class of service. Overall, it’s a good product but for me the POD configuration is a bit constrictive. I am an average size male at 5’ 10” height weighing 190 lbs so it’s not a size thing for me. I’d rather have extra wide seats without the POD walls to be honest.

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Convient flight. Good experience. No complaints other than the food quality seems to have decreased.

Food tray looked like penitentiary food - little effort to make it look appealing (packaging colour and design)

Movie selection was meh. Food was great. Crew as always great. I paid for premium because that’s the only way not to feel like a sardine. That’s how economy should be imo. Sadly passengers have to pay an extra $1000 to get what they should at base price but that’s all airlines. The airline industry in general treats passengers as cargo.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

My only complaint on any flight is meals but your gnocchi was good. The worst is breakfast. I can’t understand why you don’t just serve something simple like yogurt, fruit and a muffin or cinnamon roll.

Cramped seating for me. Luckily it wasn’t a long flight

Boarding was organized. Plane seats comfortable and service was attentive. Food options were good.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

Flight is clean and ontime. Crew is friendly. Snack can be better and the internet connection is poor

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

Flight, food and crew were all good, friendly and very satisfactory.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

We were delayed for a “couple of maintenance issues.” They were resolved rather quickly but a computer glitch caused someone in the airport to have to bring a physical copy of the paperwork so we could leave. I don’t know where they had to drive from to get to our plane but it took forever & we were 1 1/2 hrs late in leaving. The flight itself was fine.

You can plug your phone in & use their wifi to watch movies, etc, but the plane’s wifi was disconnected for most of the flight.

We had 3 flights. 1 & 2 were on the same plane but we had to de-board just to re-board 30 mins later. That may have been due to a crew change though. Our 3rd flight had a couple “maintenance” issues that held us up. They were quickly resolved but it took forever for someone to bring the paperwork needed so we could leave. Apparently there was a computer glitch so a driver had to bring a physical copy. It delayed us about 1 1/2 hrs. The flights themselves were smooth & no problems. For boarding, I don’t know why they don’t start with the back of the plane & move forward. It would eliminate the back up from people trying to find their seats & put their bags in the overhead bins. Unless you’re on an overseas flight, there is no food, you get a beverage & either a small bag of pretzels or a biscuit cookie. Take your own food or snacks of you want something more.

We spent too much time on board waiting for takeoff.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

They have the most inexperienced / rude flight staff I’ve encountered

very difficult boarding process - aggressive passengers not the friendliest crew

WiFi was not eorkig (again) And the plane was from 1990 with the screens which were.not touch and most didn’t even work and if lucky could tune in tv

I paid extra for a seat closer to the front. The TV didn’t work at all for the entire flight. Would have been nice to know before I purchased an “upgraded “ seat

It was great. I had never flown on JetBlue before, but would be very happy to fly with them in the future.

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

The captain gave good announcements and the flight attendants were friendly. The WiFi was pretty good. The plane itself looked very old inside and the seats were very uncomfortable. The screens in the seat backs were the smallest I’ve ever seen. There were so many loud and obnoxious kids on this flight and the parents didn’t do much to try to quiet them down. Some had videos and games on tablets with higher than necessary volume going the whole time.

My luggage didn’t arrive at LAX, so that wasn’t a good experience.

Terrible seat, no in flight entertainment. No complimentary food or drinks. Seats really hurt my back after flying spirit for the day.

Plastic seat really hurt my back. Cannot even recline on the flight. Very hard to sleep on the plane due to terrible seats . Food and drinks were expensive and not very good. There were like 2 open exit rows behind me. My isle was full so I asked flight attendants if I could sit there. They told me it was a safety issue??? I think it more unsafe to have no one sitting there. In case of emergency, you’d want someone there to help.

Over SOLD flight. It does not matter that you were able to check in 24 Hours before and confirm your flight. At the airport, the company SPIRIT rep wanted to remove people who pay for lower fares.

The delays and the lack of communication and organization within the airport itself for Staffing this flight and coordinating the paper log necessary to depart was ridiculous and deplorable

It was a no show, so we got put in hotels for a nite. The A320 plane was very modern and flite and crew (if a pilot shows up were fine). Price was very good.

The entire staff from check in agents to flight attendants were pleasant and professional. Would suggest a complimentary water.

I was never aware that I had to pay $100 per luggage to them on the plane that are simply carry-ons. This is discriminatory and I’m going to be alerting my entire family and friends and my Instagram following up over 75,000 of this issue and misunderstanding, including mismanaging.

Very easy boarding! Crew was fantastic and offered us refreshments quickly and efficiently. Quick, nice flight!

My experience with spirit was not good at all! This was actually my first time flying with Spirit and it’s definitely my last, first of all that flight was delayed, plus I had to pay $99 dollars for my carry on, that’s insane I have never pay for my carry on, I’m definitely going keep traveling with JetBlue or American Airlines, you guys have horrible service.

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