Find Cheap Flights from Washington to Costa Rica

Depart
Return
1 adult
Cabin Economy
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Close
The price shown for each flight will be the average for all passengers including any infants.
Show flexible dates
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Washington to Costa Rica

(Round-trip)
Depart: Sat Jan 27 2018 Return: Sat Feb 3 2018 Trip spans 8 days
$296
Select
United
United
IAD
12:00a
→
SJO
5:35p
17h 35m
1 stop
SJO
12:00a
→
IAD
4:40a
4h 40m
nonstop
Depart: Sat Dec 2 2017 Return: Fri Dec 8 2017 Trip spans 7 days
$325
Select
Multiple Airlines
Multiple Airlines
IAD
12:00a
→
SJO
1:39p
13h 39m
2 stops
SJO
12:00a
→
IAD
8:11a
8h 11m
1 stop
Depart: Thu Sep 28 2017 Return: Tue Oct 3 2017 Trip spans 6 days
$328
Select
Delta
Delta
IAD
12:00a
→
SJO
2:01p
14h 01m
1 stop
SJO
12:00a
→
IAD
9:59a
9h 59m
1 stop
Depart: Wed Mar 7 2018 Return: Mon Mar 12 2018 Trip spans 5 days
$389
Select
American Airlines
American Airlines
DCA
12:00a
→
LIR
8:31a
8h 31m
1 stop
LIR
12:00a
→
DCA
3:55p
15h 55m
1 stop
Depart: Wed Oct 25 2017 Return: Mon Oct 30 2017 Trip spans 6 days
$407
Select
Aeromexico
Aeromexico
IAD
12:00a
→
SJO
11:30a
11h 30m
1 stop
SJO
12:00a
→
IAD
10:20a
10h 20m
1 stop
Depart: Mon Mar 26 2018 Return: Sun Apr 1 2018 Trip spans 7 days
$452
Select
Avianca
Avianca
IAD
12:00a
→
SJO
2:45p
14h 45m
2 stops
SJO
12:00a
→
IAD
6:36a
6h 36m
1 stop
Depart: Wed Nov 8 2017 Return: Sun Nov 12 2017 Trip spans 5 days
$477
Select
Copa Airlines
Copa Airlines
IAD
12:00a
→
LIR
5:13a
29h 13m
1 stop
LIR
12:00a
→
IAD
8:52a
8h 52m
1 stop
Depart: Wed Jan 31 2018 Return: Sat Feb 10 2018 Trip spans 11 days
$296
Select
United
United
IAD
12:00a
→
SJO
2:10p
14h 10m
1 stop
SJO
12:00a
→
IAD
4:40a
4h 40m
nonstop
Depart: Thu Feb 1 2018 Return: Sat Feb 10 2018 Trip spans 10 days
$296
Select
United
United
IAD
12:00a
→
SJO
7:10p
19h 10m
1 stop
SJO
12:00a
→
IAD
4:40a
4h 40m
nonstop
Depart: Wed Nov 15 2017 Return: Mon Nov 20 2017 Trip spans 6 days
$328
Select
Delta
Delta
IAD
12:00a
→
SJO
7:45a
7h 45m
1 stop
SJO
12:00a
→
IAD
12:38p
12h 38m
1 stop
Depart: Wed Jan 17 2018 Return: Tue Jan 23 2018 Trip spans 7 days
$339
Select
Multiple Airlines
Multiple Airlines
DCA
12:00a
→
SJO
8:47p
20h 47m
2 stops
SJO
12:00a
→
DCA
11:14a
11h 14m
2 stops
Depart: Sat Feb 3 2018 Return: Sat Feb 10 2018 Trip spans 8 days
$296
Select
United
United
IAD
12:00a
→
SJO
5:35p
17h 35m
1 stop
SJO
12:00a
→
IAD
4:40a
4h 40m
nonstop
Depart: Wed Nov 15 2017 Return: Mon Nov 20 2017 Trip spans 6 days
$328
Select
Delta
Delta
DCA
12:00a
→
SJO
7:50a
7h 50m
1 stop
SJO
12:00a
→
DCA
12:05p
12h 05m
1 stop
Depart: Wed Dec 6 2017 Return: Sun Dec 10 2017 Trip spans 5 days
$344
Select
Multiple Airlines
Multiple Airlines
DCA
12:00a
→
SJO
7:05a
7h 05m
1 stop
SJO
12:00a
→
DCA
9:15a
9h 15m
1 stop
Depart: Tue Mar 20 2018 Return: Mon Mar 26 2018 Trip spans 7 days
$389
Select
American Airlines
American Airlines
DCA
12:00a
→
LIR
6:36a
6h 36m
1 stop
LIR
12:00a
→
DCA
3:55p
15h 55m
1 stop
Depart: Mon Feb 5 2018 Return: Tue Feb 6 2018 Trip spans 2 days
$301
Select
United
United
DCA
12:00a
→
SJO
4:15p
16h 15m
1 stop
SJO
12:00a
→
DCA
8:15a
8h 15m
1 stop
Depart: Sun Dec 3 2017 Return: Fri Dec 8 2017 Trip spans 6 days
$334
Select
Delta
Delta
IAD
12:00a
→
SJO
7:46a
7h 46m
1 stop
SJO
12:00a
→
IAD
9:11a
9h 11m
1 stop
Depart: Mon Oct 30 2017 Return: Tue Nov 7 2017 Trip spans 9 days
$417
Select
Aeromexico
Aeromexico
IAD
12:00a
→
SJO
11:05a
11h 05m
1 stop
SJO
12:00a
→
IAD
10:17a
10h 17m
1 stop
Depart: Wed Mar 14 2018 Return: Wed Mar 21 2018 Trip spans 8 days
$393
Select
American Airlines
American Airlines
IAD
12:00a
→
LIR
6:51p
18h 51m
1 stop
LIR
12:00a
→
IAD
5:51p
17h 51m
1 stop
Depart: Mon Feb 5 2018 Return: Tue Feb 6 2018 Trip spans 2 days
$301
Select
United
United
DCA
12:00a
→
SJO
4:15p
16h 15m
1 stop
SJO
12:00a
→
DCA
8:15a
8h 15m
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.

We compile tonnes of data for you
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,
please send us an email and someone from our team will get back to you promptly.

^ The fares displayed in KAYAK ads found on other sites include all taxes and fees for economy class travel and were found by KAYAK users in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
Airports
Origin
Washington
only $296
only $301
Destination
Liberia
$389
San Jose
$296