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Cheap flights from Seattle to San José from C$ 348

SEA — SJO
19 Oct — 26 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to San José

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to San José

Sun 25/109:55 p.m. -
2 stops20h 45m
Fri 30/101:30 p.m. -
2 stops21h 55m
Deal found 18/9C$ 754
Sun 8/119:25 p.m. -
2 stops12h 55m
Sat 21/112:45 p.m. -
2 stops12h 50m
Deal found 17/9C$ 760
Sun 1/119:25 p.m. -
2 stops12h 55m
Thu 12/112:10 p.m. -
2 stops20h 15m
Deal found 15/9C$ 763
Sat 24/106:15 a.m. -
2 stops12h 25m
Sat 7/112:05 p.m. -
2 stops20h 20m
Deal found 17/9C$ 807
Mon 19/105:50 a.m. -
2 stops12h 50m
Tue 27/101:00 p.m. -
2 stops11h 55m
Deal found 14/9C$ 820
Wed 2/122:43 p.m. -
2 stops15h 52m
Wed 16/124:15 p.m. -
2 stops20h 25m
Deal found 18/9C$ 821
Fri 23/103:55 p.m. -
1 stop19h 05m
Mon 26/101:25 p.m. -
1 stop21h 38m
Deal found 16/9C$ 827
Thu 15/105:41 p.m. -
1 stop19h 19m
Thu 22/101:00 p.m. -
1 stop12h 10m
Deal found 17/9C$ 838
Sat 5/126:00 a.m. -
1 stop14h 17m
Fri 11/122:37 p.m. -
1 stop11h 24m
Deal found 16/9C$ 840
Sun 25/1011:59 p.m. -
1 stop9h 26m
Fri 30/1011:35 a.m. -
2 stops14h 24m
Deal found 18/9C$ 847
Mon 9/1111:45 p.m. -
1 stop20h 30m
Sat 21/117:00 a.m. -
1 stop15h 48m
Deal found 17/9C$ 852

Find flight deals from Seattle to San José

Round-trip from

C$ 754

One-way from

C$ 348

Popular in

March

Cheapest in

January

Average price

C$ 887
Southwest
  • Southwest
  • 25/10-30/10
  • 4 total stops
  • 42h 40m total
  • Seattle to San José
Search Deals
Southwest
  • Southwest
  • 28/10-31/12
  • 2 total stops
  • 13h 05m total
  • Seattle to San José
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Fri 19/2

8:55 p.m.-12:50 p.m.

1 stop13h 55m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 348

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Sun 28/2

7:40 p.m.-1:45 p.m.

2 stops16h 05m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 355

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Wed 20/1

1:40 p.m.-12:50 p.m.

2 stops21h 10m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 382

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Tue 3/11

3:35 p.m.-8:32 a.m.

1 stop14h 57m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 390
Quickest round-trip

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Sun 28/2

5:30 p.m.-8:32 a.m.

1 stop13h 02m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 390

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Wed 7/10

10:44 a.m.-7:15 a.m.

1 stop19h 31m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 418

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Thu 24/9

9:05 a.m.-7:15 a.m.

1 stop21h 10m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 438

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Sat 5/12

10:40 a.m.-1:22 p.m.

2 stops24h 42m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 474

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Sat 23/1

3:51 p.m.-8:39 p.m.

3 stops26h 48m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 481

SeattleSan José

SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl

SEASJO

Seattle/Tacoma Intl

Mon 15/2

10:45 a.m.-8:32 a.m.

1 stop19h 47m

San José Juan Santamaria Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 481

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 20 resultsSorted by cheapest first
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Best time to book a flight from Seattle to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from Seattle to San José, you should look to book at least 10 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to San José?

Currently, January is the cheapest month in which you can book a flight from Seattle to San José (average of C$ 806). Flying from Seattle to San José in March is currently the most expensive (average of C$ 1,121). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to San José?

Airfare is below average for this route at the moment.

Seattle to San José flights typically cost between C$ 777 and C$ 1,012 in October.
The cheapest round-trip price found within the last 5 days was C$ 754 on Southwest (25 Oct-30 Oct).

Related info for your journey

  • How long is the flight from Seattle to San José?

    There are many flights that can get you from Seattle to San José in 9h 26m. Fly via Southwest or United Airlines to get the fastest option. Airlines will cover a distance of 5480 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Seattle to San José that include hotel bookings?

    Yes. In addition to deals on Seattle to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San José.

  • Can I find deals for business class flights from Seattle to San José?

    Yes. Cheapflights offers flight deals from Seattle to San José by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to San José (average of C$ 806). Flying from Seattle to San José in March is currently the most expensive (average of C$ 1,121). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Heredia
Dominical
Alajuela
Monteverde

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to San José

Seattle to Liberia flights

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