Find Cheap Flights from Boston Logan International 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 Boston Logan International to Costa Rica

(Round-trip)
Depart: Thu Sep 7 2017 Return: Wed Sep 20 2017 Trip spans 14 days
United
United
BOS
1:05a
LIR
9:35a
8h 30m
1 stop
LIR
8:35a
BOS
7:00p
10h 25m
1 stop
Depart: Wed Sep 13 2017 Return: Thu Sep 21 2017 Trip spans 9 days
Delta
Delta
BOS
2:00a
LIR
9:55a
7h 55m
1 stop
LIR
9:05a
BOS
6:55p
9h 50m
1 stop
Depart: Sat Sep 16 2017 Return: Wed Sep 20 2017 Trip spans 5 days
American Airlines
American Airlines
BOS
2:30p
LIR
10:01a
19h 31m
2 stops
LIR
8:47a
BOS
2:12a
17h 25m
2 stops
Depart: Sat Sep 2 2017 Return: Thu Sep 7 2017 Trip spans 6 days
Spirit Airlines
Spirit Airlines
BOS
1:46p
SJO
10:18p
8h 32m
1 stop
SJO
8:35a
BOS
6:43p
10h 08m
2 stops
Depart: Sat Nov 25 2017 Return: Sat Dec 2 2017 Trip spans 8 days
JetBlue
JetBlue
BOS
2:05a
LIR
7:35a
5h 30m
nonstop
LIR
7:36a
BOS
12:58p
5h 22m
nonstop
Depart: Wed Nov 15 2017 Return: Thu Nov 30 2017 Trip spans 16 days
Avianca
Avianca
BOS
6:27p
SJO
12:05p
17h 38m
2 stops
SJO
7:20a
BOS
3:02p
31h 42m
2 stops
Depart: Wed Oct 4 2017 Return: Thu Oct 12 2017 Trip spans 9 days
Copa Airlines
Copa Airlines
BOS
5:27a
LIR
11:19a
29h 52m
1 stop
LIR
10:07a
BOS
1:15p
27h 08m
1 stop
Depart: Mon Oct 30 2017 Return: Sat Nov 4 2017 Trip spans 6 days
United
United
BOS
1:25a
LIR
10:20a
8h 55m
1 stop
LIR
8:55a
BOS
6:32p
9h 37m
1 stop
Depart: Sat Sep 30 2017 Return: Sat Oct 7 2017 Trip spans 8 days
American Airlines
American Airlines
BOS
12:45p
LIR
10:01a
21h 16m
1 stop
LIR
8:47a
BOS
3:57a
19h 10m
2 stops
Depart: Mon Oct 2 2017 Return: Wed Oct 11 2017 Trip spans 10 days
Delta
Delta
BOS
3:25p
LIR
10:03a
18h 38m
2 stops
LIR
9:10a
BOS
4:28a
19h 18m
2 stops
Depart: Tue Sep 19 2017 Return: Fri Sep 22 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
BOS
1:05a
SJO
9:35a
8h 30m
2 stops
SJO
8:35a
BOS
6:43p
10h 08m
2 stops
Depart: Sat Oct 28 2017 Return: Sat Nov 4 2017 Trip spans 8 days
United
United
BOS
3:18a
LIR
10:20a
31h 02m
1 stop
LIR
8:55a
BOS
6:32p
9h 37m
1 stop
Depart: Tue Oct 3 2017 Return: Wed Oct 11 2017 Trip spans 9 days
Delta
Delta
BOS
2:00a
LIR
10:03a
8h 03m
1 stop
LIR
9:10a
BOS
6:09p
32h 59m
2 stops
Depart: Tue Sep 26 2017 Return: Fri Sep 29 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
BOS
5:30a
SJO
10:19p
16h 49m
2 stops
SJO
8:35a
BOS
6:43p
10h 08m
2 stops
Depart: Sat Nov 11 2017 Return: Fri Nov 17 2017 Trip spans 7 days
American Airlines
American Airlines
BOS
11:12a
LIR
10:41a
23h 29m
1 stop
LIR
10:22a
BOS
4:22a
18h 00m
2 stops
Depart: Sat Nov 18 2017 Return: Fri Nov 24 2017 Trip spans 7 days
Avianca
Avianca
BOS
6:27p
SJO
5:25a
10h 58m
1 stop
SJO
9:55p
BOS
3:02p
17h 07m
1 stop
Depart: Fri Aug 25 2017 Return: Thu Sep 14 2017 Trip spans 21 days
United
United
BOS
11:05a
LIR
9:35a
22h 30m
2 stops
LIR
8:35a
BOS
4:03a
43h 28m
2 stops
Depart: Mon Oct 16 2017 Return: Wed Oct 25 2017 Trip spans 10 days
Delta
Delta
BOS
2:55p
LIR
10:03a
19h 08m
2 stops
LIR
9:10a
BOS
6:13a
21h 03m
2 stops
Depart: Wed Oct 25 2017 Return: Thu Nov 2 2017 Trip spans 9 days
Copa Airlines
Copa Airlines
BOS
5:27a
LIR
11:19a
29h 52m
1 stop
LIR
10:07a
BOS
1:15p
27h 08m
1 stop
Depart: Fri Sep 29 2017 Return: Sat Oct 14 2017 Trip spans 16 days
Spirit Airlines
Spirit Airlines
BOS
2:24p
SJO
10:19p
7h 55m
1 stop
SJO
9:10p
BOS
6:36a
9h 26m
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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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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^ 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

Boston
$327
Destination

Liberia
$327
San Jose
$350