SEA - SJO

C$ 217 Find Cheap Flights from Seattle to San José

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to San José departing on 29/9. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San José, 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 Seattle to San José, as well as popular online travel agencies
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Flight Deals

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

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

Wed, 29 Oct - Wed, 5 Nov
United Airlines Logo
3:37 p.m. - 7:32 a.m.SEA-SJO
14h 55m1 stop
United Airlines Logo
9:40 a.m. - 6:25 p.m.SJO-SEA
10h 45m1 stop
C$ 496United Airlines
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Wed, 29 Oct - Tue, 4 Nov
Alaska Airlines Logo
5:20 a.m. - 11:51 p.m.SEA-SJO
17h 31m2 stops
Alaska Airlines Logo
1:55 a.m. - 7:58 p.m.SJO-SEA
20h 03m1 stop
C$ 501Alaska Airlines
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Tue, 4 Nov - Wed, 12 Nov
Delta Logo
3:45 p.m. - 12:50 p.m.SEA-SJO
19h 05m1 stop
Delta Logo
2:31 p.m. - 10:15 a.m.SJO-SEA
21h 44m1 stop
C$ 512Delta
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Sat, 18 Oct - Tue, 25 Nov
United Airlines Logo
7:37 p.m. - 12:26 p.m.SEA-SJO
15h 49m2 stops
United Airlines Logo
2:20 p.m. - 10:46 p.m.SJO-SEA
10h 26m1 stop
C$ 516United Airlines
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Thu, 6 Nov - Wed, 12 Nov
Alaska Airlines Logo
8:00 a.m. - 12:38 a.m.SEA-SJO
14h 38m2 stops
Alaska Airlines Logo
1:55 a.m. - 4:56 p.m.SJO-SEA
17h 01m1 stop
C$ 518Alaska Airlines
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Wed, 5 Nov - Thu, 13 Nov
Alaska Airlines Logo
4:30 p.m. - 12:38 a.m.SEA-SJO
30h 08m1 stop
Alaska Airlines Logo
1:55 a.m. - 1:02 p.m.SJO-SEA
13h 07m1 stop
C$ 522Alaska Airlines
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Wed, 5 Nov - Wed, 12 Nov
Alaska Airlines Logo
6:50 p.m. - 12:38 a.m.SEA-SJO
27h 48m1 stop
Alaska Airlines Logo
1:55 a.m. - 11:32 p.m.SJO-SEA
23h 37m2 stops
C$ 529Alaska Airlines
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Wed, 8 Oct - Wed, 22 Oct
United Airlines Logo
7:37 p.m. - 7:15 a.m.SEA-SJO
10h 38m1 stop
United Airlines Logo
7:55 a.m. - 11:29 p.m.SJO-SEA
16h 34m2 stops
C$ 534United Airlines
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Fri, 14 Nov - Tue, 18 Nov
Southwest Logo
5:55 p.m. - 1:45 p.m.SEA-SJO
17h 50m2 stops
Southwest Logo
9:00 a.m. - 10:55 p.m.SJO-SEA
15h 55m2 stops
C$ 541Southwest
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Fri, 31 Oct - Fri, 7 Nov
Southwest Logo
12:35 p.m. - 12:10 p.m.SEA-SJO
22h 35m2 stops
Southwest Logo
2:10 p.m. - 12:35 a.m.SJO-SEA
12h 25m2 stops
C$ 644Southwest
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Everything you should know

Top airlines
Alaska Airlines
Cheapest • from C$ 496 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 2% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 19% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 496
Typical prices: C$ 675-1026
United Airlines
Wed 29/10Wed 5/11
SEA - SJO • 1 stop
Cheapest one-way flights
C$ 217
Typical prices: C$ 317-444
United Airlines
Mon 29/9
SEA - SJO • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San José!
Booking Insights

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

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

How much is a round-trip flight from Seattle to San José, San José Province?

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to San José, 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 Seattle to San José is September, where tickets cost C$ 729 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is C$ 1,201 and C$ 1,012 respectively.

How far in advance should I book a flight from Seattle to San José?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to San José, 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 Seattle to San José, you should book around 4 weeks before departure, which saves you about 2% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

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Good to know

Low seasonSeptember
Cheapest flightC$ 217
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (4% more expensive on average)
Flight from Seattle to San José

When to book flights from Seattle to San José

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

  • Which airline has suitable pet policies for Seattle to San José flights?

    Spirit Airlines ensures a favorable pet policy for flights from Seattle-Tacoma International Airport (SEA) to San Jose International Airport (SJO). One pet per person is permitted in the cabin by Spirit Airlines. The pet and carrier weight should not exceed 20 lb. Acceptable pets include small dogs, household birds cats, and domestic rabbits.

  • Which layover options are available for passengers flying from Seattle to San José?

    Passengers will have several layover options for this route. United Airlines, Avianca, has a layover at San Francisco International Airport (SFO) and El Salvador International Airport (SAL). United Airlines has its layover at George Bush Intercontinental Airport (IAH), and American Airlines at Dallas Fort Worth International Airport (DFW).

  • What public transport options are from San José International Airport to downtown San José?

    San José International Airport (SJC) offers a variety of transportation options for getting into the city. The most convenient choice, VTA Airport Flyer, offers a bus service outside the terminal building. It operates straightforward service to the central area of San Jose, a journey that lasts around 20 minutes. One can find additional shuttle vans and taxis near baggage claim.

  • Can I get rental cars from San José International Airport?

    Yes, hiring a vehicle at San Jose's international airport is feasible. The rental car companies positioned at the airport comprise Avis, Budget, Dollar, Enterprise, Fox, Hertz, National, and Thrifty. All rental car businesses are situated on the ground floor of the terminal, except Fox, which is on the upper floor. The vehicle rentals vary, including economy to high-end cars, sport utility vehicles, and minivans.

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

    In the last 3 days, the lowest price for a flight from Seattle to San José was C$ 157 for a one-way ticket and C$ 358 for a round-trip.

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

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

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

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

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

    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 Seattle to San José.

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

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

    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 San José with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to San José?

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

KAYAK’s top tips for finding a cheap flight from Seattle to San José

  • Seattle-Tacoma International Airport (SEA) is located at Washington's SeaTac City, approximately 12 miles south of Seattle's central area. It is a major hub for Alaska Airlines, American Airlines, Delta Air Lines, and United Airlines. Flights departing from Seattle bound for San José can utilize Terminal A, which Alaska Airlines, American Airlines, and United Airlines utilize, or Terminal C, which Delta Air Lines operates.
  • Alaska Airlines is a suitable family-friendly airline for travel from Seattle to San José. These consist of onboard entertainment, free pillows and blankets, additional snacks, specially prepared dishes, and price cuts for kids.
  • Most airlines, including Spirit Airlines, provide special needs assistance to passengers, including escort assistance, in boarding and deplaning. Wheelchair assistance is also available free of charge.
  • When traveling from Seattle to San José, a business class ticket offers many advantages that can make the journey more enjoyable. The main advantages of a business class ticket on Copa Airlines include access to more generous seating and legroom, tailored service and courtesy from the flight attendants, courtesy meals and beverages, and more luggage allowances.
  • Spirit Airlines flights departing from Seattle-Tacoma International Airport (SEA) to San Jose International Airport have favorable carry-on policies. Passengers can carry one individual item like a purse. They can as well carry one average carry-on bag for their flight with no additional fee. The weight of the bags should be at most 40 lb.

Reviews of the top airline flying from Seattle to San José

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San José. 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 Seattle to San José? 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.
7.2
American AirlinesOverall score based on 10000 reviews
6.9Entertainment
7.5Boarding
6.4Food
7.2Comfort
8.0Crew
Airline reviews

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

10.0 ExcellentDouglas, Sep 2025SLC - CLT
Read more American Airlines reviews

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

The entertainment package was vast and the selections were very current. Keep updating it was great.

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

Information on your arrival and departure airports

Seattle (SEA)
San José (SJO)

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