Find Cheap Flights from Seattle 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 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
5:29a
17h 04m
1 stop
Depart: Tue Aug 29 2017 Return: Tue Sep 5 2017 Trip spans 8 days
Spirit Airlines
Spirit Airlines
SEA
8:33p
SJO
6:33a
34h 00m
3 stops
SJO
8:59p
SEA
8:38p
23h 39m
3 stops
Depart: Thu May 11 2017 Return: Mon May 15 2017 Trip spans 5 days
Major Airline
Major Airline
SEA
5:57a
SJO
11:17p
17h 20m
1 stop
SJO
4:46a
SEA
1:16a
20h 30m
1 stop
Depart: Wed May 31 2017 Return: Tue Jun 6 2017 Trip spans 7 days
Avianca
Avianca
SEA
9:40a
SJO
4:58a
19h 18m
2 stops
SJO
1:03p
SEA
10:00a
20h 57m
2 stops
Depart: Sun Sep 3 2017 Return: Mon Sep 11 2017 Trip spans 9 days
United
United
SEA
6:43a
LIR
6:30a
23h 47m
2 stops
LIR
8:30a
SEA
8:47p
12h 17m
2 stops
Depart: Fri Aug 11 2017 Return: Mon Aug 21 2017 Trip spans 11 days
American Airlines
American Airlines
SEA
1:45p
LIR
8:57a
19h 12m
1 stop
LIR
8:47a
SEA
5:07a
20h 20m
2 stops
Depart: Mon Aug 7 2017 Return: Thu Aug 31 2017 Trip spans 25 days
Delta
Delta
SEA
5:30a
LIR
7:03a
25h 33m
2 stops
LIR
3:45a
SEA
2:14p
10h 29m
1 stop
Depart: Fri May 12 2017 Return: Wed May 17 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
5:55p
SJO
10:10a
16h 15m
1 stop
SJO
12:10p
SEA
5:44a
17h 34m
1 stop
Depart: Sat May 13 2017 Return: Tue Jun 13 2017 Trip spans 32 days
Major Airline
Major Airline
SEA
12:00p
SJO
1:50a
13h 50m
2 stops
SJO
6:05a
SEA
5:15p
11h 10m
1 stop
Depart: Thu Jun 1 2017 Return: Mon Jun 5 2017 Trip spans 5 days
Avianca
Avianca
SEA
9:40a
SJO
4:58a
19h 18m
2 stops
SJO
1:00p
SEA
10:00a
21h 00m
2 stops
Depart: Mon Jul 24 2017 Return: Tue Aug 1 2017 Trip spans 9 days
Spirit Airlines
Spirit Airlines
SEA
8:33p
SJO
7:18p
22h 45m
2 stops
SJO
9:12p
SEA
8:38p
23h 26m
3 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: Mon Sep 11 2017 Return: Mon Sep 18 2017 Trip spans 8 days
American Airlines
American Airlines
SEA
1:00p
LIR
8:53a
19h 53m
2 stops
LIR
10:22a
SEA
8:03a
21h 41m
2 stops
Depart: Mon May 15 2017 Return: Wed Jun 14 2017 Trip spans 31 days
Alaska Airlines
Alaska Airlines
SEA
1:00a
SJO
10:10a
9h 10m
1 stop
SJO
12:10p
SEA
11:10p
11h 00m
1 stop
Depart: Wed Aug 16 2017 Return: Mon Aug 28 2017 Trip spans 13 days
Major Airline
Major Airline
SEA
9:15a
SJO
2:46a
17h 31m
1 stop
SJO
6:31a
SEA
12:36a
18h 05m
1 stop
Depart: Sat Aug 19 2017 Return: Tue Aug 29 2017 Trip spans 11 days
Avianca
Avianca
SEA
3:20p
SJO
4:58a
13h 38m
2 stops
SJO
1:00p
SEA
9:43a
20h 43m
2 stops
Depart: Tue Jul 25 2017 Return: Tue Aug 1 2017 Trip spans 8 days
Spirit Airlines
Spirit Airlines
SEA
8:33p
SJO
6:33a
34h 00m
3 stops
SJO
8:59p
SEA
8:38p
23h 39m
3 stops
Depart: Fri Jun 9 2017 Return: Sat Jun 17 2017 Trip spans 9 days
United
United
SEA
1:30a
LIR
3:00p
13h 30m
1 stop
LIR
2:50a
SEA
6:13p
15h 23m
1 stop
Depart: Fri Jul 7 2017 Return: Sat Jul 15 2017 Trip spans 9 days
American Airlines
American Airlines
SEA
3:15a
LIR
8:28a
29h 13m
1 stop
LIR
10:25a
SEA
3:59p
29h 34m
1 stop
Depart: Tue May 16 2017 Return: Wed Jun 14 2017 Trip spans 30 days
Alaska Airlines
Alaska Airlines
SEA
4:50p
SJO
10:10a
17h 20m
1 stop
SJO
12:10p
SEA
11:10p
11h 00m
1 stop
* 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
$516
Destination

Liberia
$516
San Jose
$524