Find Cheap Flights from Lambert-St Louis 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.
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 Lambert-St Louis to Costa Rica

(Round-trip)
Depart: Fri Sep 8 2017 Return: Tue Sep 12 2017 Trip spans 5 days
American Airlines
American Airlines
STL
2:03p
SJO
6:48a
16h 45m
1 stop
SJO
3:54a
STL
3:26p
11h 32m
1 stop
Depart: Sun May 28 2017 Return: Tue Jun 6 2017 Trip spans 10 days
United
United
STL
2:20p
SJO
5:20p
27h 00m
1 stop
SJO
2:30a
STL
12:44p
10h 14m
1 stop
Depart: Mon May 29 2017 Return: Mon Jun 5 2017 Trip spans 8 days
Major Airline
Major Airline
STL
2:50a
SJO
3:21p
12h 31m
2 stops
SJO
4:40a
STL
2:58p
10h 18m
2 stops
Depart: Wed Jun 21 2017 Return: Thu Jun 29 2017 Trip spans 9 days
Air Canada
Air Canada
STL
1:45p
SJO
10:00a
20h 15m
1 stop
SJO
10:20a
STL
3:33a
17h 13m
1 stop
Depart: Wed May 10 2017 Return: Mon May 15 2017 Trip spans 6 days
Delta
Delta
STL
7:45a
SJO
5:07p
9h 22m
1 stop
SJO
3:05a
STL
5:21p
14h 16m
1 stop
Depart: Wed Jun 7 2017 Return: Sun Jun 11 2017 Trip spans 5 days
Copa Airlines
Copa Airlines
STL
4:25a
LIR
10:03a
29h 38m
2 stops
LIR
10:14a
STL
8:53a
46h 39m
2 stops
Depart: Tue May 30 2017 Return: Tue Jun 6 2017 Trip spans 8 days
American Airlines
American Airlines
STL
2:04p
SJO
6:44a
16h 40m
1 stop
SJO
10:35a
STL
3:29a
16h 54m
1 stop
Depart: Wed May 24 2017 Return: Fri Jun 2 2017 Trip spans 10 days
United
United
STL
1:45a
SJO
8:35a
6h 50m
1 stop
SJO
2:30a
STL
12:44p
10h 14m
1 stop
Depart: Tue Jun 20 2017 Return: Tue Jul 4 2017 Trip spans 15 days
American Airlines
American Airlines
STL
2:00p
SJO
6:45a
16h 45m
1 stop
SJO
10:35a
STL
5:23a
18h 48m
1 stop
Depart: Tue May 16 2017 Return: Mon May 22 2017 Trip spans 7 days
United
United
STL
4:30a
SJO
5:20p
12h 50m
1 stop
SJO
2:30a
STL
4:24p
13h 54m
1 stop
Depart: Sat Jun 10 2017 Return: Fri Jun 16 2017 Trip spans 7 days
Major Airline
Major Airline
STL
11:30p
SJO
2:51p
15h 21m
2 stops
SJO
10:02p
STL
2:25p
16h 23m
2 stops
Depart: Tue Jul 11 2017 Return: Wed Jul 19 2017 Trip spans 9 days
American Airlines
American Airlines
STL
2:15p
SJO
10:42a
20h 27m
1 stop
SJO
8:38a
STL
6:41p
10h 03m
1 stop
Depart: Wed May 17 2017 Return: Mon May 22 2017 Trip spans 6 days
United
United
STL
4:30a
SJO
5:20p
12h 50m
1 stop
SJO
2:30a
STL
12:44p
10h 14m
1 stop
Depart: Mon Jul 10 2017 Return: Tue Jul 18 2017 Trip spans 9 days
American Airlines
American Airlines
STL
2:15p
SJO
10:42a
20h 27m
1 stop
SJO
10:35a
STL
5:23a
18h 48m
1 stop
Depart: Thu Aug 31 2017 Return: Mon Sep 4 2017 Trip spans 5 days
Major Airline
Major Airline
STL
2:45a
SJO
3:21p
12h 36m
1 stop
SJO
3:30a
STL
12:19a
20h 49m
1 stop
Depart: Thu May 18 2017 Return: Mon May 22 2017 Trip spans 5 days
United
United
STL
10:05a
SJO
5:20p
7h 15m
1 stop
SJO
2:30a
STL
4:24p
13h 54m
1 stop
Depart: Wed Jun 28 2017 Return: Wed Jul 5 2017 Trip spans 8 days
American Airlines
American Airlines
STL
7:10a
SJO
10:42a
27h 32m
1 stop
SJO
2:55a
STL
3:50a
24h 55m
1 stop
Depart: Fri May 19 2017 Return: Mon May 22 2017 Trip spans 4 days
United
United
STL
2:12a
SJO
4:15p
14h 03m
1 stop
SJO
2:30a
STL
12:44p
10h 14m
1 stop
Depart: Fri Jun 2 2017 Return: Fri Jun 9 2017 Trip spans 8 days
Major Airline
Major Airline
STL
9:45p
SJO
9:32a
11h 47m
1 stop
SJO
8:32p
STL
10:01a
13h 29m
1 stop
Depart: Wed Jul 12 2017 Return: Fri Jul 21 2017 Trip spans 10 days
Copa Airlines
Copa Airlines
STL
6:50a
SJO
6:17a
23h 27m
2 stops
SJO
1:40p
STL
5:47p
28h 07m
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.

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.

Airports
Origin

St. Louis
$437
Destination

Liberia
$623
San Jose
$437