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Cheap flights from San José to Seattle from $176

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San José to Seattle departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:30 am - 12:34 am
SJO
-
SEA
20h 04m1 stop
United Airlines Logo
12:40 pm - 12:56 pm
SEA
-
SJO
22h 16m2 stops
$392United Airlines
Thu, Dec 25 - Sat, Jan 17
Multiple Airlines Logo
8:05 pm - 4:54 pm
SJO
-
SEA
22h 49m3 stops
Multiple Airlines Logo
8:15 pm - 11:40 pm
SEA
-
SJO
25h 25m3 stops
$396Multiple Airlines
Thu, Jan 29 - Sat, Jan 31
Multiple Airlines Logo
6:10 am - 8:57 pm
SJO
-
SEA
15h 47m2 stops
Multiple Airlines Logo
8:25 am - 10:40 pm
SEA
-
SJO
13h 15m1 stop
$398Multiple Airlines
Tue, May 5 - Wed, May 13
Multiple Airlines Logo
4:50 pm - 10:19 am
SJO
-
SEA
18h 29m1 stop
Multiple Airlines Logo
7:00 pm - 11:15 pm
SEA
-
SJO
27h 15m1 stop
$400Multiple Airlines
Wed, May 6 - Mon, May 18
United Airlines Logo
12:35 pm - 12:34 am
SJO
-
SEA
13h 59m1 stop
United Airlines Logo
11:59 pm - 10:32 pm
SEA
-
SJO
20h 33m1 stop
$404United Airlines
Thu, Dec 25 - Sun, Jan 4
Multiple Airlines Logo
6:00 am - 9:01 pm
SJO
-
SEA
17h 01m3 stops
Multiple Airlines Logo
7:15 am - 11:15 pm
SEA
-
SJO
14h 00m2 stops
$405Multiple Airlines
Tue, Feb 24 - Thu, Mar 5
Multiple Airlines Logo
8:05 pm - 5:52 pm
SJO
-
SEA
23h 47m2 stops
Multiple Airlines Logo
3:57 pm - 1:40 pm
SEA
-
SJO
19h 43m2 stops
$407Multiple Airlines
Tue, Jan 20 - Tue, Jan 27
American Airlines Logo
7:09 am - 10:20 pm
SJO
-
SEA
17h 11m1 stop
American Airlines Logo
8:35 am - 11:43 pm
SEA
-
SJO
13h 08m1 stop
$409American Airlines
Fri, Jan 9 - Sun, Jan 18
Multiple Airlines Logo
7:45 am - 10:29 pm
SJO
-
SEA
16h 44m1 stop
Multiple Airlines Logo
6:20 am - 11:15 pm
SEA
-
SJO
14h 55m2 stops
$410Multiple Airlines
Tue, Jan 20 - Tue, Jan 27
United Airlines Logo
6:30 am - 10:52 pm
SJO
-
SEA
18h 22m1 stop
United Airlines Logo
7:00 am - 12:56 pm
SEA
-
SJO
27h 56m1 stop
$412United Airlines
Thu, Dec 25 - Sat, Jan 17

United Airlines flights from San José to Seattle

Our best United Airlines deals on San José to Seattle flight tickets
United Airlines
Dec 20
SJO9:40 amSan José Juan Santamaria Intl
17h 19m
1 stop
SEA12:59 amSeattle/Tacoma Intl
Jan 4
SEA11:59 pmSeattle/Tacoma Intl
20h 33m
1 stop
SJO10:32 pmSan José Juan Santamaria Intl
$399
Find similar
United Airlines
Dec 25
SJO12:35 pmSan José Juan Santamaria Intl
13h 59m
1 stop
SEA12:34 amSeattle/Tacoma Intl
Jan 17
SEA10:58 amSeattle/Tacoma Intl
23h 58m
1 stop
SJO12:56 pmSan José Juan Santamaria Intl
$401
Find similar
United Airlines
Dec 20
SJO8:45 amSan José Juan Santamaria Intl
16h 27m
2 stops
SEA11:12 pmSeattle/Tacoma Intl
Jan 4
SEA5:00 amSeattle/Tacoma Intl
15h 32m
1 stop
SJO10:32 pmSan José Juan Santamaria Intl
$405
Find similar

Alaska Airlines flights from San José to Seattle

Our best Alaska Airlines deals on San José to Seattle flight tickets
Alaska Airlines
Mar 4
SJO1:27 amSan José Juan Santamaria Intl
31h 37m
2 stops
SEA7:04 amSeattle/Tacoma Intl
Mar 9
SEA9:40 pmSeattle/Tacoma Intl
25h 28m
2 stops
SJO12:08 amSan José Juan Santamaria Intl
$468
Find similar
Alaska Airlines
May 5
SJO12:20 amSan José Juan Santamaria Intl
14h 56m
1 stop
SEA2:16 pmSeattle/Tacoma Intl
May 17
SEA8:05 amSeattle/Tacoma Intl
14h 41m
1 stop
SJO11:46 pmSan José Juan Santamaria Intl
$502
Find similar
Alaska Airlines
Mar 4
SJO1:27 amSan José Juan Santamaria Intl
32h 51m
2 stops
SEA8:18 amSeattle/Tacoma Intl
Mar 9
SEA7:45 amSeattle/Tacoma Intl
15h 23m
2 stops
SJO12:08 amSan José Juan Santamaria Intl
$504
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San José to Seattle 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 December 15, 2025.
Use the filters below to find and compare flights from San José to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 12/25

6:30 am-12:34 am

1 stop20h 04m

Seattle/Tacoma Intl

Sat 1/17

12:40 pm-12:56 pm

2 stops22h 16m

$392

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 1/29

8:05 pm-4:54 pm

3 stops22h 49m

Seattle/Tacoma Intl

Sat 1/31

8:15 pm-11:40 pm

3 stops25h 25m

$396

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 5/5

6:10 am-8:57 pm

2 stops15h 47m

Seattle/Tacoma Intl

Wed 5/13

8:25 am-10:40 pm

1 stop13h 15m

$398

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Wed 5/6

4:50 pm-10:19 am

1 stop18h 29m

Seattle/Tacoma Intl

Mon 5/18

7:00 pm-11:15 pm

1 stop27h 15m

$400

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 12/25

12:35 pm-12:34 am

1 stop13h 59m

Seattle/Tacoma Intl

Sun 1/4

11:59 pm-10:32 pm

1 stop20h 33m

$404

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 2/24

6:00 am-9:01 pm

3 stops17h 01m

Seattle/Tacoma Intl

Thu 3/5

7:15 am-11:15 pm

2 stops14h 00m

$405

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 1/20

8:05 pm-5:52 pm

2 stops23h 47m

Seattle/Tacoma Intl

Tue 1/27

3:57 pm-1:40 pm

2 stops19h 43m

$407

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Fri 1/9

7:09 am-10:20 pm

1 stop17h 11m

Seattle/Tacoma Intl

Sun 1/18

8:35 am-11:43 pm

1 stop13h 08m

$409

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 1/20

7:45 am-10:29 pm

1 stop16h 44m

Seattle/Tacoma Intl

Tue 1/27

6:20 am-11:15 pm

2 stops14h 55m

$410

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 12/25

6:30 am-10:52 pm

1 stop18h 22m

Seattle/Tacoma Intl

Sat 1/17

7:00 am-12:56 pm

1 stop27h 56m

$412

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 Seattle from

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

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 Seattle?

In general, October is the cheapest month to fly from San José to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $476. If you don’t want to visit Seattle in October, then you should wait until September to fly from San José, when ticket prices are also cheap, with an average price of $513.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from San José is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $582. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San José because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $683.

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

Flying to Seattle from San José at noon is the least expensive time of day to depart. momondo users have found prices as low as $619 when looking at flights departing at noon. Flights to Seattle are more costly in the evening, with an average ticket price of $680. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest San José Juan Santamaria Intl to Seattle/Tacoma Intl flight route?

Fly from San José Juan Santamaria Intl to Seattle/Tacoma Intl for the best San José Juan Santamaria Intl - Seattle/Tacoma Intl flight prices

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

You are more likely to see cheaper flights to Seattle from San José when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $553 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San José for as low as $445 on momondo.

What cabin class options are available on San José Juan Santamaria Intl to Seattle/Tacoma Intl flights?

There is only 1 cabin class available to choose from on San José Juan Santamaria Intl to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of December 2025, prices for San José to Seattle flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from San José to Seattle

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

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

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

Fastest flight time

10h 52m

Direct flights

None
The fastest flight from San José to Seattle takes 10h 52m
There are no direct flights from San José to Seattle. There are no popular flight routes from San José to Seattle.
Search flight deals

  • How far is San José Juan Santamaria Intl to Seattle/Tacoma Intl by plane?

    San José Juan Santamaria Intl and Seattle/Tacoma Intl are 3420.5 mi apart from one another. 10h 52m is a normal flight duration for this route.

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

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

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

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

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from San José to Seattle

Compare and see reviews for airlines that fly from San José to Seattle with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $398Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights
United AirlinesPriceFrom $426Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $431Free CancellationRating
8.0
11,448 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Redmond
Tukwila
Cle Elum
Federal Way
Lakewood
Fife
Centralia
Westport
Kirkland
Shoreline

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San José to Seattle. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Seattle from San José which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential San José to Seattle 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 San José to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San José to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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