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Cheap flights from Seattle to San José from $171

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San José departing on 11/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to San José

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:00 pm - 11:15 pmSEA-SJO
24h 15m2 stops
Multiple Airlines Logo
6:00 am - 9:56 amSJO-SEA
29h 56m2 stops
$373Multiple Airlines
Find Deal
Fri, Feb 13 - Sat, Feb 21
Multiple Airlines Logo
8:00 am - 11:15 pmSEA-SJO
14h 15m2 stops
Multiple Airlines Logo
6:10 am - 6:47 pmSJO-SEA
13h 37m2 stops
$375Multiple Airlines
Find Deal
Tue, Mar 31 - Tue, Apr 14
Avianca Logo
6:30 am - 11:15 pmSEA-SJO
15h 45m1 stop
Avianca Logo
6:10 am - 10:18 pmSJO-SEA
17h 08m1 stop
$386Avianca
Find Deal
Tue, Apr 7 - Tue, Apr 14
Delta Logo
2:02 pm - 6:59 amSEA-SJO
14h 57m1 stop
Delta Logo
2:31 pm - 10:07 amSJO-SEA
21h 36m1 stop
$409Delta
Find Deal
Fri, Jan 23 - Sat, Feb 7
Avianca Logo
9:00 am - 11:40 pmSEA-SJO
12h 40m2 stops
Avianca Logo
6:00 am - 11:47 pmSJO-SEA
19h 47m2 stops
$411Avianca
Find Deal
Sun, Jan 11 - Sat, Jan 31
Delta Logo
12:45 pm - 7:00 amSEA-SJO
16h 15m1 stop
Delta Logo
2:31 pm - 11:58 pmSJO-SEA
11h 27m1 stop
$412Delta
Find Deal
Fri, Dec 5 - Wed, Dec 17
Alaska Airlines Logo
6:05 am - 11:48 pmSEA-SJO
15h 43m1 stop
Alaska Airlines Logo
1:30 am - 9:49 pmSJO-SEA
22h 19m2 stops
$416Alaska Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 15
American Airlines Logo
12:38 am - 10:28 pmSEA-SJO
19h 50m1 stop
American Airlines Logo
12:34 am - 7:12 pmSJO-SEA
20h 38m1 stop
$417American Airlines
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Thu, Dec 4 - Sat, Dec 20
American Airlines Logo
11:11 pm - 1:54 pmSEA-SJO
12h 43m1 stop
American Airlines Logo
12:23 am - 9:40 amSJO-SEA
11h 17m1 stop
$418American Airlines
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Sun, Feb 8 - Fri, Feb 13
Alaska Airlines Logo
9:14 pm - 11:48 pmSEA-SJO
24h 34m1 stop
Alaska Airlines Logo
1:30 am - 11:07 amSJO-SEA
11h 37m1 stop
$420Alaska Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 15

Alaska Airlines flights from Seattle to San José

Our best Alaska Airlines deals on Seattle to San José flight tickets
Alaska Airlines
Dec 6
SEA6:05 amSeattle/Tacoma Intl
15h 43m
1 stop
SJO11:48 pmSan José Juan Santamaria Intl
Dec 15
SJO1:30 amSan José Juan Santamaria Intl
22h 19m
2 stops
SEA9:49 pmSeattle/Tacoma Intl
$416
Find similar
Alaska Airlines
Nov 16
SEA7:57 pmSeattle/Tacoma Intl
26h 41m
1 stop
SJO12:38 amSan José Juan Santamaria Intl
Dec 9
SJO1:30 amSan José Juan Santamaria Intl
19h 25m
2 stops
SEA6:55 pmSeattle/Tacoma Intl
$418
Find similar
Alaska Airlines
Dec 5
SEA9:14 pmSeattle/Tacoma Intl
24h 34m
1 stop
SJO11:48 pmSan José Juan Santamaria Intl
Dec 15
SJO1:30 amSan José Juan Santamaria Intl
11h 37m
1 stop
SEA11:07 amSeattle/Tacoma Intl
$420
Find similar

United Airlines flights from Seattle to San José

Our best United Airlines deals on Seattle to San José flight tickets
United Airlines
Nov 16
SEA11:59 pmSeattle/Tacoma Intl
11h 16m
1 stop
SJO1:15 pmSan José Juan Santamaria Intl
Dec 10
SJO9:40 amSan José Juan Santamaria Intl
15h 35m
1 stop
SEA11:15 pmSeattle/Tacoma Intl
$413
Find similar
United Airlines
Nov 15
SEA2:41 pmSeattle/Tacoma Intl
13h 44m
2 stops
SJO6:25 amSan José Juan Santamaria Intl
Nov 18
SJO2:20 pmSan José Juan Santamaria Intl
10h 26m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
$452
Find similar
United Airlines
Nov 14
SEA7:28 pmSeattle/Tacoma Intl
11h 04m
1 stop
SJO8:32 amSan José Juan Santamaria Intl
Nov 17
SJO2:20 pmSan José Juan Santamaria Intl
10h 26m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
$456
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to San José that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 3, 2025.
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

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 2/13

9:00 pm-11:15 pm

2 stops24h 15m

San José Juan Santamaria Intl

Sat 2/21

6:00 am-9:56 am

2 stops29h 56m

$373

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 3/31

8:00 am-11:15 pm

2 stops14h 15m

San José Juan Santamaria Intl

Tue 4/14

6:10 am-6:47 pm

2 stops13h 37m

$375

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 4/7

6:30 am-11:15 pm

1 stop15h 45m

San José Juan Santamaria Intl

Tue 4/14

6:10 am-10:18 pm

1 stop17h 08m

$386

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 1/23

2:02 pm-6:59 am

1 stop14h 57m

San José Juan Santamaria Intl

Sat 2/7

2:31 pm-10:07 am

1 stop21h 36m

$409

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 1/11

9:00 am-11:40 pm

2 stops12h 40m

San José Juan Santamaria Intl

Sat 1/31

6:00 am-11:47 pm

2 stops19h 47m

$411

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 12/5

12:45 pm-7:00 am

1 stop16h 15m

San José Juan Santamaria Intl

Wed 12/17

2:31 pm-11:58 pm

1 stop11h 27m

$412

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 12/6

6:05 am-11:48 pm

1 stop15h 43m

San José Juan Santamaria Intl

Mon 12/15

1:30 am-9:49 pm

2 stops22h 19m

$416

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 12/4

12:38 am-10:28 pm

1 stop19h 50m

San José Juan Santamaria Intl

Sat 12/20

12:34 am-7:12 pm

1 stop20h 38m

$417

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 2/8

11:11 pm-1:54 pm

1 stop12h 43m

San José Juan Santamaria Intl

Fri 2/13

12:23 am-9:40 am

1 stop11h 17m

$418

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 12/5

9:14 pm-11:48 pm

1 stop24h 34m

San José Juan Santamaria Intl

Mon 12/15

1:30 am-11:07 am

1 stop11h 37m

$420

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San José from

How to get the cheapest flight ticket from Seattle to San José

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San José?

In general, September is the cheapest month to fly from Seattle to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $501. If you don’t want to visit San José in September, then you should wait until October to fly from Seattle, when ticket prices are also cheap, with an average price of $508.

What is the cheapest day to depart on your flight to San José?

On average, the least expensive day to fly to San José from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $576. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Seattle to San José on a Friday will generally be more expensive and average around $782. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San José?

Our data shows that the cheapest Seattle to San José flights are usually those with departure times at noon. Our users have found flights to San José at noon for as low as $658. Flights in the morning are often more expensive with an average ticket price of $693.

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

You are more likely to see cheaper flights to San José from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $638 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from Seattle for as low as $532 on momondo.

Can stopping save me money on Seattle to San José flights?

You could potentially save up to 10% on your flight if you consider stops on a Seattle to San José flight.

How have Seattle to San José flight prices changed over time?

As of November 2025, prices for Seattle to San José flights are approximately 24% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to San José

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San José according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to San José (SEA to SJO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San José

Direct flights

None
There are no direct flights from Seattle to San José. There are no popular flight routes from Seattle to San José.
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  • How far is Seattle/Tacoma Intl to San José Juan Santamaria Intl by plane?

    San José Juan Santamaria Intl is 3420.5 mi away from Seattle/Tacoma Intl. A reasonable flight in good conditions will take 11h 47m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San José Juan Santamaria Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to San José Juan Santamaria Intl Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San José Juan Santamaria Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to San José Juan Santamaria Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San José Juan Santamaria Intl Airport.

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The travel and health documents you'll need for your trip to San José Juan Santamaria Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San José Juan Santamaria Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to San José?

Best airlines flying from Seattle to San José

Compare and see reviews for airlines that fly from Seattle to San José with momondo
Airline
Rating
Free Cancellation
Price
AviancaPriceFrom $152Free CancellationRating
6.6
2,470 reviews
Search Avianca flights
DeltaPriceFrom $280Free CancellationRating
7.9
8,002 reviews
Search Delta flights
Alaska AirlinesPriceFrom $405Free CancellationRating
8.0
11,237 reviews
Search Alaska Airlines flights
Copa AirlinesPriceFrom $423Free CancellationRating
7.6
1,561 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $434Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
American AirlinesPriceFrom $442Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $568Free CancellationRating
8.0
4,237 reviews
Search Southwest flights
AeromexicoPriceFrom $782Free CancellationRating
7.4
1,673 reviews
Search Aeromexico flights

Traveling to a place near San José?

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

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San José?

Finding the right flight to San José from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San José quick and easy, saving you time and money.

Can I find flights from Seattle to San José with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to San José flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to San José?

Once all potential Seattle to San José flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to San José right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to San José now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San José and let you know when they change.

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