SJO - SEA

$271 Find Cheap Flights from San José 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 José to Seattle departing on 5/11. 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 José 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 José 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
$390
Typical prices: $521-$431
Multiple Airlines
Thu 9/24Sat 10/3
SJO - SEA • 2 stops
Cheapest one-way
$271
Typical prices: $282-$350
Multiple Airlines
Mon 5/11
SJO - SEA • 2 stops
Nonstop flights
Not available
There are currently no direct flights between San José and Seattle. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $505 (round-trip)
Shortest trip • 10h 45m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 6% compared to booking last minute.
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When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
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+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
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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

Thu, Sep 24 - Sat, Oct 3
Multiple Airlines Logo
5:45 am - 6:33 pm
SJO
-
SEA
13h 48m
2 stops
Multiple Airlines Logo
7:00 am - 11:15 pm
SEA
-
SJO
15h 15m
2 stops
$390Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
Multiple Airlines Logo
5:45 am - 6:33 pm
SJO
-
SEA
13h 48m
1 stop
Multiple Airlines Logo
9:50 am - 11:15 pm
SEA
-
SJO
12h 25m
1 stop
$395Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
5:45 am - 6:26 pm
SJO
-
SEA
13h 41m
2 stops
Multiple Airlines Logo
6:50 am - 11:15 pm
SEA
-
SJO
15h 25m
2 stops
$432Multiple Airlines
Tue, Jul 28 - Tue, Aug 11
Multiple Airlines Logo
5:45 am - 6:10 pm
SJO
-
SEA
13h 25m
1 stop
Multiple Airlines Logo
10:03 am - 11:15 pm
SEA
-
SJO
12h 12m
1 stop
$434Multiple Airlines
Thu, May 21 - Wed, May 27
Multiple Airlines Logo
5:45 am - 10:44 pm
SJO
-
SEA
17h 59m
1 stop
Multiple Airlines Logo
9:15 pm - 11:15 pm
SEA
-
SJO
25h 00m
1 stop
$440Multiple Airlines
Tue, Jul 28 - Tue, Aug 11
Multiple Airlines Logo
5:45 am - 6:10 pm
SJO
-
SEA
13h 25m
2 stops
Multiple Airlines Logo
10:03 am - 11:15 pm
SEA
-
SJO
12h 12m
2 stops
$442Multiple Airlines
Sat, Aug 22 - Mon, Aug 31
Multiple Airlines Logo
5:45 am - 3:32 pm
SJO
-
SEA
34h 47m
2 stops
Multiple Airlines Logo
7:07 pm - 11:15 pm
SEA
-
SJO
27h 08m
2 stops
$444Multiple Airlines
Thu, Jul 23 - Mon, Aug 3
Multiple Airlines Logo
5:45 am - 6:10 pm
SJO
-
SEA
13h 25m
2 stops
Multiple Airlines Logo
9:18 pm - 11:15 pm
SEA
-
SJO
24h 57m
2 stops
$449Multiple Airlines
Thu, May 21 - Thu, May 28
Multiple Airlines Logo
5:45 am - 7:16 pm
SJO
-
SEA
14h 31m
1 stop
Multiple Airlines Logo
8:00 am - 11:15 pm
SEA
-
SJO
14h 15m
1 stop
$455Multiple Airlines
Wed, Apr 22 - Mon, Apr 27
Multiple Airlines Logo
4:35 pm - 10:03 pm
SJO
-
SEA
30h 28m
1 stop
Multiple Airlines Logo
9:06 pm - 11:15 pm
SEA
-
SJO
25h 09m
1 stop
$459Multiple 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.

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 $459 (return) on average. On the other hand, the most expensive months are June and January, where the average cost of round-trip tickets is $636 and $620 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 2 weeks before departure, which saves you about 6% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$271
Best time to beat the crowds with an average 2% drop in price.
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 3 days, the lowest price for a flight from San José to Seattle was $271 for a one-way ticket and $390 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?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the San José to Seattle flight route.

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

    oneworld, and Star Alliance are the airline alliances operating flights between San José and Seattle, with oneworld 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 $602 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 $511 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 12170 reviews
8.5Crew
8.1Boarding
7.0Food
7.0Entertainment
7.8Comfort
Airline reviews

Were on time, very efficient and pleasant. Families with children were treated well and boarded ahead which made it easier for the rest of the plane.

10.0 ExcellentAlexandra, Apr 2026
JFK - SEA
Read more Alaska Airlines reviews

Were on time, very efficient and pleasant. Families with children were treated well and boarded ahead which made it easier for the rest of the plane.

I truly can’t give a review regarding the food or entertainment it did not apply to my flight. But everything ran very smoothly.

Great. A to B no issues. Everyone did their jobs exceptionally. All great. God bless America.

The response was very helpful and quick. Overall, it was very professional.

No complimentary snacks or food. Had to buy drinks and food.

The last row was empty and I sat there for two minutes. I was treated like a criminal for doing so. My wife wanted to get past the cart in the aisle and she was treated like dirt by the same black attendent..

My suggestion is that they should provide USB-C charging ports for modern cell phones.

Overall, we had a very good experience with Alaska Airlines on our flight from Honolulu to Seattle. The First Class cabin was comfortable, boarding was smooth, and the crew was friendly and attentive. The meal service was solid and the overall flight felt well organized. One thing that stood out negatively was the drink service. I was in First Class and, while quietly watching movies and not causing any issues, I was cut off after four drinks. I understand safety policies, but the cutoff felt a bit premature given the context.

Everything was excellent. It always is with Alaska Airlines. Thank you. 😊

It was ok! Not fond of sitting in middle seat. Tried to upgrade with my Atmos card but it was a new account and they weren’t able to look up my account details.

The flight was officially delayed 3 times, and was actually later than that. Combined, it was a 3 hour delay, but there was no recognition (miles, voucher, etc). The crew seemed stressed. The captain sounded nervous in his announcements. The flight itself was smooth and uneventful.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Food was awful. TV didn’t work for long haul flight and my husband needed credit. Staff was nice and did their best but overall conditions were very uncomfortable.

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

Just a bad day to fly. Flight was delayed from scheduled 6:50 pm departure to 8:50 pm. Combination of factors mostly related to weather at the destination airport (which is where the incoming flight originated) which delayed the inbound flight over an hour. Once on board, we taxied but had to hold again on the taxiway for 10 minutes or so. We did not get wheels up until after 9 pm. The flight was smooth but about 18 minutes from our destination, we had to hold for several minutes more due to weather at ORD. We finally landed at ORD about 11:08 pm (accounting for the time difference, that was about a 3 hour delay from our scheduled departure time). It felt like we were never going to get to our destination. But the flight crew and attendants were very good. The movie selection onboard was also very nice. Got to watch half of a movie just during our taxi from the gate at ATL due to the delay!

I liked that it was on time, however, the food was not good.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

They were fast and I like how they used to entertainment system to play video about the safety.

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

It was canceled at the last minute. While I was literally at the airport. Messed my entire trip up.

Seat was VERY uncomfortable. Flight was delayed and then boarded slowly. The crew was super helpful with boarding and supporting maximizing the luggage in the overhead.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Early morning flight and no food in First Class except a "salmon" box. No thank you. Was informed before take off by Captain that the plane was not serviced before we boarded in Phoenix. How does that happen? Need more frequent additions/turn over on the Entertainment. Thanks

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

Flight was delayed. No urgency by American Airlines team to assist those with connecting flights. It was basically you are on your own to run through the terminals to try and make your connection. Thanks, Mary

I have never been assaulted they way I was today in Charlotte - shame on American

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

Information on your arrival and departure airports