SEA - SJO

C$ 260 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 29/5. 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.
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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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Seattle to San José

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to San José.
Discover the best prices for you by selecting your travel dates on KAYAK.
Alaska Airlines Logo
9:30 p.m. - 11:46 p.m.SEA-SJO
25h 16m2 stops
Alaska Airlines Logo
1:06 a.m. - 6:27 p.m.SJO-SEA
18h 21m1 stop
C$ 543Alaska Airlines
Find Deal
Wed, 28 May - Tue, 3 Jun
Alaska Airlines Logo
5:43 p.m. - 11:46 p.m.SEA-SJO
29h 03m1 stop
Alaska Airlines Logo
1:06 a.m. - 4:53 p.m.SJO-SEA
16h 47m1 stop
C$ 547Alaska Airlines
Find Deal
Wed, 28 May - Tue, 3 Jun
Alaska Airlines Logo
7:00 a.m. - 11:46 p.m.SEA-SJO
15h 46m1 stop
Alaska Airlines Logo
1:06 a.m. - 4:53 p.m.SJO-SEA
16h 47m1 stop
C$ 551Alaska Airlines
Find Deal
Thu, 29 May - Mon, 2 Jun
United Airlines Logo
7:14 a.m. - 7:37 p.m.SEA-SJO
11h 23m1 stop
United Airlines Logo
8:45 a.m. - 6:32 p.m.SJO-SEA
10h 47m1 stop
C$ 648United Airlines
Find Deal
Sat, 17 May - Sat, 24 May
United Airlines Logo
7:14 a.m. - 7:37 p.m.SEA-SJO
11h 23m1 stop
United Airlines Logo
6:00 a.m. - 6:32 p.m.SJO-SEA
13h 32m2 stops
C$ 653United Airlines
Find Deal
Sat, 17 May - Sat, 24 May
Delta Logo
9:20 p.m. - 11:48 a.m.SEA-SJO
13h 28m1 stop
Delta Logo
1:18 p.m. - 12:11 a.m.SJO-SEA
11h 53m1 stop
C$ 664Delta
Find Deal
Sun, 31 Aug - Tue, 16 Sep
Delta Logo
9:20 p.m. - 11:48 a.m.SEA-SJO
13h 28m1 stop
Delta Logo
1:18 p.m. - 12:11 a.m.SJO-SEA
11h 53m1 stop
C$ 670Delta
Find Deal
Sat, 30 Aug - Tue, 16 Sep
Southwest Logo
5:10 p.m. - 12:10 p.m.SEA-SJO
18h 00m2 stops
Southwest Logo
8:45 a.m. - 12:15 a.m.SJO-SEA
16h 30m2 stops
C$ 707Southwest
Find Deal
Tue, 3 Jun - Tue, 10 Jun
Southwest Logo
5:20 a.m. - 7:40 p.m.SEA-SJO
13h 20m2 stops
Southwest Logo
12:00 p.m. - 12:45 a.m.SJO-SEA
13h 45m1 stop
C$ 745Southwest
Find Deal
Tue, 22 Jul - Sun, 3 Aug
Copa Airlines Logo
5:14 p.m. - 4:22 p.m.SEA-SJO
22h 08m2 stops
Copa Airlines Logo
4:10 a.m. - 10:16 p.m.SJO-SEA
19h 06m2 stops
C$ 1,077Copa Airlines
Find Deal
Thu, 17 Jul - Sat, 26 Jul
Useful Info

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.

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 May, where tickets cost C$ 796 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is C$ 1,278 and C$ 1,008 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 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.


Good to know

Low seasonSeptember
High seasonFebruary
Cheapest flightC$ 260
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly and prices are also 0% lower 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$ 188 for a one-way ticket and C$ 392 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?

    oneworld, SkyTeam, and Star Alliance 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.

Top airlines 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.
8.0
Alaska AirlinesOverall score based on 9968 reviews
7.1Food
8.2Boarding
8.5Crew
7.1Entertainment
7.9Comfort
Airline reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

2.0 MediocreAnonymous, Apr 2025SEA - BOI
Read more Alaska Airlines reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Need to get on train for second flight it’s much nicer when all the gates are together for obvious reasons

Cramped, crowded aircraft. Poorly organized boarding. Tasteless crackers to eat. 40 minutes late. A standard US air travel experience.

Would not mind having movie options an available like Delta, but is not necessary. Did not have food, so cannot appropriately rate that section.

Three hour flight so snacks and basic drinks unless you pre buy as usual. Didn’t do my emtertainment as was tired after 23 hours of travel. You have to use your own device on US flights if travelers aren’t aware so if you only use your cell phone that can be small. Crew are great.

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

It was very frustrating that the people that got in th plane before I did had all taken the storage area above my seat so I had to go all the way town to store my luggage. My seat was 7c and I had to go all the way to 16 to find a place for my carry on. How is that even allowed! The worst part was trying to get my luggage when we landed.. such a headache and so unnecessary. If I’m in row 7c I should be able to store my carry on above where I’m sitting. It’s ridiculous that o need to go all the way down and struggle at the end of the flight to get my carry on.

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

It was as good as flying can be, which is still very uncomfortable. Clean new aircraft, great crew.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

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

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