Find Cheap Flights from Seattle/Tacoma Intl to Costa Rica

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

(Round-trip)
Depart: Thu Sep 28 2017 Return: Tue Oct 3 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
1:00a
LIR
10:25a
9h 25m
1 stop
LIR
12:25p
SEA
11:35p
11h 10m
1 stop
Depart: Tue May 16 2017 Return: Sun May 21 2017 Trip spans 6 days
Major Airline
Major Airline
SEA
12:00a
SJO
2:17p
14h 17m
1 stop
SJO
10:08p
SEA
2:59p
16h 51m
1 stop
Depart: Tue Jul 11 2017 Return: Tue Jul 18 2017 Trip spans 8 days
Spirit Airlines
Spirit Airlines
SEA
8:38p
SJO
6:35a
33h 57m
3 stops
SJO
9:12p
SEA
8:43p
23h 31m
3 stops
Depart: Tue Aug 22 2017 Return: Tue Aug 29 2017 Trip spans 8 days
Avianca
Avianca
SEA
2:15p
SJO
4:58a
14h 43m
2 stops
SJO
1:00p
SEA
9:43a
20h 43m
2 stops
Depart: Thu Jun 8 2017 Return: Thu Jun 15 2017 Trip spans 8 days
United
United
SEA
8:10p
LIR
3:00p
18h 50m
1 stop
LIR
2:50a
SEA
2:20p
11h 30m
1 stop
Depart: Wed Aug 9 2017 Return: Thu Aug 31 2017 Trip spans 23 days
Delta
Delta
SEA
10:00a
LIR
1:25a
15h 25m
1 stop
LIR
3:45a
SEA
6:50p
15h 05m
1 stop
Depart: Fri Jun 16 2017 Return: Thu Jul 6 2017 Trip spans 21 days
American Airlines
American Airlines
SEA
3:15a
LIR
8:28a
29h 13m
1 stop
LIR
8:47a
SEA
8:52p
12h 05m
1 stop
Depart: Thu Aug 24 2017 Return: Thu Sep 7 2017 Trip spans 15 days
Alaska Airlines
Alaska Airlines
SEA
1:00a
LIR
10:10a
9h 10m
1 stop
LIR
12:25p
SEA
11:35p
11h 10m
1 stop
Depart: Tue Aug 29 2017 Return: Fri Sep 8 2017 Trip spans 11 days
Spirit Airlines
Spirit Airlines
SEA
8:38p
SJO
6:35a
33h 57m
3 stops
SJO
8:35a
SEA
11:40a
27h 05m
3 stops
Depart: Tue May 2 2017 Return: Tue May 9 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
12:00a
SJO
2:17p
14h 17m
1 stop
SJO
10:08p
SEA
7:13p
21h 05m
1 stop
Depart: Wed Aug 30 2017 Return: Fri Sep 8 2017 Trip spans 10 days
Avianca
Avianca
SEA
2:15p
SJO
4:45a
14h 30m
2 stops
SJO
1:00p
SEA
9:43a
20h 43m
2 stops
Depart: Fri Jun 9 2017 Return: Sat Jun 17 2017 Trip spans 9 days
United
United
SEA
8:48p
LIR
6:40a
9h 52m
1 stop
LIR
2:50a
SEA
9:15p
18h 25m
1 stop
Depart: Wed May 17 2017 Return: Mon May 22 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
1:00a
SJO
10:10a
9h 10m
1 stop
SJO
12:10p
SEA
7:06a
18h 56m
1 stop
Depart: Mon Aug 21 2017 Return: Tue Sep 5 2017 Trip spans 16 days
Major Airline
Major Airline
SEA
10:15p
SJO
2:17p
16h 02m
1 stop
SJO
10:08p
SEA
3:14p
17h 06m
1 stop
Depart: Wed Oct 18 2017 Return: Tue Oct 31 2017 Trip spans 14 days
Avianca
Avianca
SEA
2:20p
SJO
4:30p
26h 10m
2 stops
SJO
1:00p
SEA
2:38p
25h 38m
2 stops
Depart: Fri May 26 2017 Return: Thu Jun 15 2017 Trip spans 21 days
Delta
Delta
SEA
8:35a
LIR
1:20a
16h 45m
1 stop
LIR
4:10a
SEA
2:35p
10h 25m
1 stop
Depart: Sat Jun 17 2017 Return: Tue Jul 4 2017 Trip spans 18 days
United
United
SEA
11:52a
LIR
6:25a
18h 33m
2 stops
LIR
2:50a
SEA
10:00p
19h 10m
2 stops
Depart: Mon Jul 24 2017 Return: Tue Aug 8 2017 Trip spans 16 days
Spirit Airlines
Spirit Airlines
SEA
8:38p
SJO
7:18p
22h 40m
3 stops
SJO
9:12p
SEA
8:43p
23h 31m
3 stops
Depart: Mon May 22 2017 Return: Fri May 26 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
1:00a
SJO
10:10a
9h 10m
1 stop
SJO
12:10p
SEA
7:26p
31h 16m
1 stop
Depart: Tue Oct 17 2017 Return: Mon Oct 30 2017 Trip spans 14 days
Major Airline
Major Airline
SEA
10:30p
SJO
2:10p
15h 40m
2 stops
SJO
10:08p
SEA
12:48p
14h 40m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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Airports
Origin

Seattle
$504
Destination

Liberia
$504
San Jose
$538