SJO - SEA

$258 Find Cheap Flights from San José to Seattle - Compare and Save

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 José to Seattle departing on 9/30. 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

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Everything you should know

Cheapest round-trip
$555
Typical prices: $481-$633
American Airlines
Fri 9/18Mon 9/28
SJO - SEA • 1 stop
Cheapest one-way
$258
Typical prices: $248-$324
Southwest
Wed 9/30
SJO - SEA • 2 stops
Top airlines
Cheapest • from $555 (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 José and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $511 (round-trip)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San José to Seattle (SJO-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San José 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 José to Seattle

Fri, Sep 18 - Mon, Sep 28
American Airlines Logo
1:00 pm - 11:11 am
SJO
-
SEA
23h 11m
1 stop
American Airlines Logo
8:50 pm - 12:59 pm
SEA
-
SJO
15h 09m
1 stop
$555American Airlines
Tue, Oct 27 - Wed, Nov 4
United Airlines Logo
7:45 am - 8:49 pm
SJO
-
SEA
14h 04m
2 stops
United Airlines Logo
8:40 pm - 11:25 am
SEA
-
SJO
12h 45m
2 stops
$556United Airlines
Tue, Oct 27 - Wed, Nov 4
United Airlines Logo
1:25 pm - 10:55 pm
SJO
-
SEA
10h 30m
1 stop
United Airlines Logo
8:40 pm - 8:32 am
SEA
-
SJO
9h 52m
1 stop
$556United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
11:35 am - 10:55 pm
SJO
-
SEA
12h 20m
1 stop
United Airlines Logo
11:59 pm - 8:39 pm
SEA
-
SJO
18h 40m
1 stop
$556United Airlines
Fri, Sep 18 - Mon, Sep 28
American Airlines Logo
1:00 pm - 11:11 am
SJO
-
SEA
23h 11m
1 stop
American Airlines Logo
8:50 pm - 12:59 pm
SEA
-
SJO
15h 09m
1 stop
$557American Airlines
Sat, Sep 5 - Tue, Sep 15
Multiple Airlines Logo
5:45 am - 11:59 pm
SJO
-
SEA
19h 14m
2 stops
Multiple Airlines Logo
6:49 am - 11:15 pm
SEA
-
SJO
15h 26m
2 stops
$559Multiple Airlines
Sat, Oct 24 - Sun, Nov 1
Multiple Airlines Logo
5:45 am - 6:48 pm
SJO
-
SEA
14h 03m
2 stops
Multiple Airlines Logo
7:00 am - 11:15 pm
SEA
-
SJO
14h 15m
2 stops
$559Multiple Airlines
Sat, Sep 5 - Sun, Sep 13
American Airlines Logo
6:00 am - 11:29 pm
SJO
-
SEA
18h 29m
2 stops
American Airlines Logo
5:34 pm - 1:57 pm
SEA
-
SJO
19h 23m
1 stop
$564American Airlines
Sun, Nov 15 - Fri, Nov 27
Alaska Airlines Logo
1:43 am - 5:09 pm
SJO
-
SEA
17h 26m
2 stops
Alaska Airlines Logo
1:09 pm - 12:40 am
SEA
-
SJO
9h 31m
1 stop
$708Alaska Airlines
Fri, Nov 13 - Wed, Nov 25
Alaska Airlines Logo
1:43 am - 10:52 am
SJO
-
SEA
11h 09m
1 stop
Alaska Airlines Logo
8:56 pm - 12:40 am
SEA
-
SJO
49h 44m
2 stops
$729Alaska Airlines
Booking Insights

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

Get data-powered insights and trends into flights from San José 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 José 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 José to Seattle departing in September.

Flight prices are below average for this route right now.

Flights to Seattle from San José usually cost between $568 and $790 in September.
The lowest price found in the past 5 days was $555 on American Airlines (Sep 18-Sep 28).

What is the cheapest month to fly from San José to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San José 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 José to Seattle is October, where tickets cost $492 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $701 and $654 respectively.

How far in advance should I book a flight from San José 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 José 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 José to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low season

February

Cheapest flight

$258
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from San José to Seattle

When to book flights from San José to Seattle

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

  • What is the cheapest flight from San José to Seattle?

    In the last 5 days, the lowest price for a flight from San José to Seattle was $258 for a one-way ticket and $555 for a round-trip.

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

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

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

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

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

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

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

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

  • Which is the best airline for flights from San José to Seattle, Alaska Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from San José to Seattle are Alaska Airlines and United Airlines. With an average price for the route of $663 and an overall rating of 7.9, Alaska Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $626 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San José 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 José to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from San José 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 José 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 José with another airline. Booking your flights between San José 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 José 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 José up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San José to Seattle

 
See real verified KAYAK customer reviews for airlines flying from San José 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 José 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
Alaska AirlinesOverall score based on 12723 reviews
7.0Food
8.1Boarding
7.0Entertainment
8.5Crew
7.8Comfort
Airline reviews

Flight canceled. Had to fly in the evening out of lax instead of 10am out of Burbank

2.0 MediocreDiana, Jul 2026
BUR - SEA
Read more Alaska Airlines reviews

Flight canceled. Had to fly in the evening out of lax instead of 10am out of Burbank

The airline asked for volunteers to check carry ons. I figured I would to make catching my connecting flight on a short layover a little easier. They then lost my bag on the layover. Getting it back was relatively painless, but I'm still not thrilled about it. The first flight also got in fifteen minutes late, changing a 45 minute layover to a 30 minute one. And my second flight took its sweet time after starting the taxi, resulting in the flight being delayed for half an hour. Not a huge deal in the grand scheme, but a little frustrating and especially so when they ended up losing my bags.

I would love it if Alaska Airlines brought back the complimentary beverage service on short flights

the flight was fine, But I paid extra for an Aisle seat both planes and did not get what I paid for when you pay an extra almost $80 and do not get the desired seats it was frustrating I don't fly much because of my legs need more room. thank you for your attention to this

I had called before the flight for vegetarian food. But they did not have it for me.

The plane was very full, and the seats are not very spacious. I was in the middle seat, so it was not super comfortable. I didn't have any experience with the entertainment on board. And food was a Biscoff. Which I realize is just how we do it now, but I definitely miss the days when you could get a breakfast included.

I always have flown Alaska Airlines because I never had an issues. Their customers service is incredible and an amazing communication.

Someone had peed in my seat in the flight before hand. We were rushing to board and fly because our flight was delayed due to a medical emergency on the flight prior in our airplane. My seatbelt was soaked. My seat was dry, but the floor was also wet. It was strange. It smelled awful! I had to be moved and my kids had to sit away from me.

My main issue is that I paid approximately CAD 200 to select four seats for the first flight. However, when I arrived at the check-in counter, I was told that the seats had not been assigned, and my family was relocated to the last row of the plane. I was traveling with two young children, ages two and six, which made the situation especially frustrating. I paid for a service that I did not receive, yet Alaska Airlines did not offer any refund or reasonable solution. I am extremely disappointed with how this was handled and will not fly with Alaska Airlines again.

Had nothing to do with alaska just the passenger next to me on the first flight needed a second seat to fit. He was a big boy who couldn't stay in his own space.

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

leg space better than expected. two washrooms for one plane isn't enough.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

Everything was fantastic. Modern plane. All the amenities! Although the paid snacks and meals are pure robbery. Like i understand airlines need to make money, but 11$ USD for an overnight oats with some nuts in it and barely any pieces of apple.... Highway robbery

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Our flight was delayed many times throughout the day. The final delay was about 8 hours. I spent time in line to speak to someone at their understaffed desk, and also spent time waiting online and then chatting with a service rep. None of the United employees were any help at all. I desperately wanted to go get rest and possibly re-book my trip but I was denied any compensation or voucher for a hotel. I was repeatedly told it was not United's fault and therefore they had no compensation to offer. Overall, a cold and callous experience.

Flight crew and pilots did great. Flight way delayed due to a part needing replacement. Based on what the pilot indicated- the maintenance crew could’ve resolved this more efficiently than replacing whole part- and taken less time

The most cramped seating I’ve ever experienced, (including budget airlines) with no food available for purchase on a nearly 6 hour flight.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

The main problem was delay. The plane was at the gate early and bags were loaded. However, there was no crew for the flight. They were inbound from LGA and had to land and make their way to our gate. It took more than 40 minutes. Then, once the crew arrived and boarded, one of the crew members had to deplane and then a replacement crew member had to be found. It took another 40 minutes or so to get the final crew member. In all, we took off about 2 hours later than our scheduled departure time. Once in the air, the flight was great. Smooth most of the way. The crew was professional and efficient.

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

I had trouble finding a boarding pass because I had an hour between Flights and American did not see my flight I believe because I was ticketed through KAYAK. I did not have enough time to go to the desk before boarding so I went to the desk and told them while I was boarding and they had a boarding pass for me within three minutes. Nice. I paid extra to have more legroom and it is definitely worth it for a six hour flight. I would’ve paid for a decent dinner, but they didn’t offer anything but a snack box —not good for six hours.

Terrible flight seats where really uncomfortable I had body aches for 2 days and flight was delays almost two hours

Very smooth for one of the busiest travel days of the year and the crew was great.

Customer service prior to boarding is horrible Communication regarding boarding gates is released at the last minute and the gates are very distant from Customs. Very disappointing

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

Information on your arrival and departure airports