Find Deals on Flights from Costa Rica to Seattle

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Costa Rica to Seattle

(Round-trip)
Depart: Sun Mar 12 2017 Return: Mon Mar 13 2017 Trip spans 2 days
United
United
SJO
9:05p
SEA
2:25p
17h 20m
1 stop
SEA
6:55p
SJO
7:05p
24h 10m
1 stop
Depart: Mon Jan 23 2017 Return: Tue Jan 31 2017 Trip spans 9 days
American Airlines
American Airlines
SJO
8:39a
SEA
6:12p
33h 33m
1 stop
SEA
5:35p
SJO
7:51a
14h 16m
1 stop
Depart: Tue Feb 7 2017 Return: Sat Feb 18 2017 Trip spans 12 days
Delta
Delta
SJO
9:25a
SEA
2:41p
29h 16m
2 stops
SEA
2:55a
SJO
1:12a
22h 17m
1 stop
Depart: Thu Mar 30 2017 Return: Tue Apr 11 2017 Trip spans 13 days
Avianca
Avianca
SJO
1:40a
SEA
6:30p
16h 50m
2 stops
SEA
6:31p
SJO
11:05a
16h 34m
2 stops
Depart: Fri Apr 21 2017 Return: Mon Apr 24 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SJO
12:10p
SEA
5:51a
17h 41m
1 stop
SEA
1:00a
SJO
10:10a
9h 10m
1 stop
Depart: Thu Feb 2 2017 Return: Tue Mar 14 2017 Trip spans 40 days
American Airlines
American Airlines
SJO
3:30a
SEA
6:12p
14h 42m
2 stops
SEA
8:15p
SJO
8:19a
12h 04m
2 stops
Depart: Tue Apr 18 2017 Return: Tue Apr 25 2017 Trip spans 8 days
Avianca
Avianca
SJO
1:40a
SEA
5:25p
15h 45m
2 stops
SEA
6:31p
SJO
11:05a
16h 34m
2 stops
Depart: Sat Jan 21 2017 Return: Mon Jan 30 2017 Trip spans 10 days
United
United
SJO
9:05p
SEA
5:57p
20h 52m
2 stops
SEA
1:40p
SJO
5:40a
16h 00m
2 stops
Depart: Thu Apr 20 2017 Return: Tue Apr 25 2017 Trip spans 6 days
Avianca
Avianca
SJO
1:40a
SEA
5:25p
15h 45m
2 stops
SEA
6:31p
SJO
11:05a
16h 34m
2 stops
Depart: Sun Jan 22 2017 Return: Sun Jan 29 2017 Trip spans 8 days
American Airlines
American Airlines
SJO
10:49a
SEA
11:22a
24h 33m
1 stop
SEA
5:35p
SJO
5:35a
12h 00m
1 stop
Depart: Fri Apr 7 2017 Return: Fri Apr 14 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
SJO
12:10p
SEA
3:55a
15h 45m
2 stops
SEA
4:50p
SJO
10:10a
17h 20m
1 stop
Depart: Tue Mar 28 2017 Return: Tue Apr 11 2017 Trip spans 15 days
Avianca
Avianca
SJO
1:47a
SEA
6:28p
16h 41m
2 stops
SEA
6:31p
SJO
11:05a
16h 34m
2 stops
Depart: Mon Mar 27 2017 Return: Mon Apr 10 2017 Trip spans 15 days
United
United
SJO
9:05p
SEA
7:27p
22h 22m
2 stops
SEA
9:50a
SJO
6:55a
21h 05m
3 stops
Depart: Wed Mar 29 2017 Return: Tue Apr 11 2017 Trip spans 14 days
Avianca
Avianca
SJO
1:40a
SEA
6:30p
16h 50m
2 stops
SEA
6:31p
SJO
11:05a
16h 34m
2 stops
Depart: Sun Apr 9 2017 Return: Thu Apr 13 2017 Trip spans 5 days
Delta
Delta
SJO
10:09a
SEA
9:17a
23h 08m
1 stop
SEA
2:15p
SJO
2:10a
11h 55m
2 stops
Depart: Wed Apr 19 2017 Return: Wed May 3 2017 Trip spans 15 days
United
United
SJO
2:30a
SEA
2:25p
11h 55m
1 stop
SEA
9:35a
SJO
6:55a
21h 20m
2 stops
Depart: Fri Mar 31 2017 Return: Sun Apr 9 2017 Trip spans 10 days
American Airlines
American Airlines
SJO
2:40a
SEA
5:24p
14h 44m
1 stop
SEA
6:10p
SJO
8:30a
14h 20m
1 stop
Depart: Sun Dec 18 2016 Return: Fri Jan 6 2017 Trip spans 20 days
United
United
SJO
2:00a
SEA
7:58p
17h 58m
1 stop
SEA
8:55a
SJO
4:05a
19h 10m
1 stop
Depart: Tue Apr 4 2017 Return: Tue Apr 18 2017 Trip spans 15 days
Avianca
Avianca
SJO
1:47a
SEA
5:25p
15h 38m
2 stops
SEA
2:40p
SJO
4:58a
14h 18m
2 stops
Depart: Sat Apr 1 2017 Return: Tue Apr 11 2017 Trip spans 11 days
United
United
SJO
9:05a
SEA
9:15p
12h 10m
1 stop
SEA
6:30a
SJO
5:40a
23h 10m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

San Jose
$388
Destination

Seattle
$388