Find Deals on 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: Mon Mar 20 2017 Return: Thu Mar 23 2017 Trip spans 4 days
Delta
Delta
SEA
2:20p
LIR
1:00a
10h 40m
1 stop
LIR
3:12a
SEA
2:33p
11h 21m
1 stop
Depart: Tue Mar 28 2017 Return: Thu Apr 6 2017 Trip spans 10 days
American Airlines
American Airlines
SEA
7:20p
LIR
2:10p
18h 50m
1 stop
LIR
10:50a
SEA
9:39p
10h 49m
1 stop
Depart: Tue Jun 13 2017 Return: Thu Jun 15 2017 Trip spans 3 days
United
United
SEA
7:45p
LIR
3:15p
19h 30m
1 stop
LIR
2:50a
SEA
5:40p
14h 50m
1 stop
Depart: Sun May 21 2017 Return: Thu Jun 1 2017 Trip spans 12 days
Major Airline
Major Airline
SEA
5:16a
LIR
4:18a
23h 02m
1 stop
LIR
4:25a
SEA
5:15p
12h 50m
1 stop
Depart: Wed Apr 26 2017 Return: Mon May 1 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
1:00a
SJO
10:10a
9h 10m
1 stop
SJO
12:10p
SEA
7:55a
19h 45m
1 stop
Depart: Mon Mar 6 2017 Return: Mon Mar 13 2017 Trip spans 7 days
Avianca
Avianca
SEA
5:20p
SJO
9:05a
15h 45m
2 stops
SJO
1:00p
SEA
8:19a
19h 19m
2 stops
Depart: Mon Apr 3 2017 Return: Thu Apr 6 2017 Trip spans 4 days
American Airlines
American Airlines
SEA
7:20p
LIR
6:55a
11h 35m
1 stop
LIR
10:50a
SEA
9:39p
10h 49m
1 stop
Depart: Tue Apr 11 2017 Return: Thu Apr 20 2017 Trip spans 10 days
Delta
Delta
SEA
11:05a
LIR
6:57a
19h 52m
1 stop
LIR
3:53a
SEA
5:27p
13h 34m
1 stop
Depart: Wed Jun 14 2017 Return: Thu Jun 15 2017 Trip spans 2 days
United
United
SEA
1:30a
LIR
3:15p
13h 45m
1 stop
LIR
2:50a
SEA
5:40p
14h 50m
1 stop
Depart: Tue May 23 2017 Return: Thu Jun 1 2017 Trip spans 10 days
Major Airline
Major Airline
SEA
10:40a
LIR
4:03a
41h 23m
1 stop
LIR
6:14a
SEA
6:04a
47h 50m
1 stop
Depart: Wed Apr 12 2017 Return: Thu Apr 20 2017 Trip spans 9 days
Delta
Delta
SEA
11:33a
LIR
1:18a
13h 45m
1 stop
LIR
3:53a
SEA
2:25p
10h 32m
1 stop
Depart: Sat Apr 22 2017 Return: Thu Apr 27 2017 Trip spans 6 days
American Airlines
American Airlines
SEA
8:15p
LIR
9:00a
12h 45m
1 stop
LIR
10:50a
SEA
9:39p
10h 49m
1 stop
Depart: Fri Apr 21 2017 Return: Thu Apr 27 2017 Trip spans 7 days
United
United
SEA
4:25a
LIR
3:00p
10h 35m
1 stop
LIR
8:25a
SEA
9:08p
12h 43m
1 stop
Depart: Wed May 24 2017 Return: Thu Jun 1 2017 Trip spans 9 days
Major Airline
Major Airline
SEA
5:16a
LIR
4:18a
23h 02m
1 stop
LIR
8:10a
SEA
7:13p
11h 03m
1 stop
Depart: Wed Apr 19 2017 Return: Thu Apr 27 2017 Trip spans 9 days
Delta
Delta
SEA
4:25p
LIR
1:18a
8h 53m
1 stop
LIR
3:53a
SEA
3:55p
12h 02m
1 stop
Depart: Wed Mar 22 2017 Return: Sat Mar 25 2017 Trip spans 4 days
American Airlines
American Airlines
SEA
11:10a
LIR
8:55a
21h 45m
1 stop
LIR
10:50a
SEA
9:48p
10h 58m
1 stop
Depart: Thu May 11 2017 Return: Fri Jun 9 2017 Trip spans 30 days
United
United
SEA
7:00p
LIR
6:25a
11h 25m
1 stop
LIR
2:50a
SEA
9:20p
18h 30m
1 stop
Depart: Thu Apr 27 2017 Return: Mon May 8 2017 Trip spans 12 days
Alaska Airlines
Alaska Airlines
SEA
2:55p
SJO
10:10a
19h 15m
1 stop
SJO
12:10p
SEA
11:13p
11h 03m
1 stop
Depart: Fri May 12 2017 Return: Thu May 18 2017 Trip spans 7 days
Delta
Delta
SEA
2:30p
LIR
1:25a
10h 55m
1 stop
LIR
3:45a
SEA
2:20p
10h 35m
1 stop
Depart: Thu Mar 23 2017 Return: Sat Mar 25 2017 Trip spans 3 days
American Airlines
American Airlines
SEA
9:42a
LIR
8:55a
23h 13m
1 stop
LIR
10:50a
SEA
9:48p
10h 58m
1 stop
* 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

Seattle
$395
Destination

Liberia
$395
San Jose
$510