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Cheap flights from Boston to Costa Rica from $77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Costa Rica departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Spirit Airlines Logo
6:10 am - 11:14 amBOS-SJO
7h 04m1 stop
Spirit Airlines Logo
12:35 pm - 11:59 pmSJO-BOS
9h 24m1 stop
$241Spirit Airlines
Find Deal
sáb., oct. 4 - sáb., oct. 11
Spirit Airlines Logo
6:16 am - 11:30 amBOS-SJO
7h 14m1 stop
Spirit Airlines Logo
1:35 pm - 11:59 pmSJO-BOS
9h 24m1 stop
$242Spirit Airlines
Find Deal
dom., oct. 26 - mar., nov. 4
Copa Airlines Logo
3:49 pm - 8:19 amBOS-SJO
18h 30m1 stop
Copa Airlines Logo
4:08 am - 10:03 pmSJO-BOS
16h 55m1 stop
$288Copa Airlines
Find Deal
mar., oct. 28 - lun., nov. 3
Copa Airlines Logo
3:49 pm - 4:52 pmBOS-SJO
27h 03m3 stops
Copa Airlines Logo
10:08 am - 11:02 pmSJO-BOS
10h 54m1 stop
$293Copa Airlines
Find Deal
jue., oct. 16 - jue., oct. 30
JetBlue Logo
6:05 am - 12:46 pmBOS-LIR
8h 41m1 stop
JetBlue Logo
1:55 pm - 12:03 amLIR-BOS
8h 08m1 stop
$345JetBlue
Find Deal
dom., oct. 26 - sáb., nov. 1
JetBlue Logo
5:10 am - 12:46 pmBOS-LIR
9h 36m1 stop
JetBlue Logo
3:40 pm - 10:59 pmLIR-BOS
5h 19mnonstop
$359JetBlue
Find Deal
dom., oct. 26 - sáb., nov. 1
Delta Logo
5:40 am - 2:30 pmBOS-LIR
9h 50m1 stop
Delta Logo
1:55 pm - 8:18 pmLIR-BOS
5h 23mnonstop
$383Delta
Find Deal
sáb., ene. 31 - sáb., feb. 7
Delta Logo
5:40 am - 11:40 amBOS-LIR
8h 00m1 stop
Delta Logo
2:05 pm - 11:59 pmLIR-BOS
8h 54m1 stop
$384Delta
Find Deal
mar., oct. 28 - mié., nov. 5
American Airlines Logo
6:29 am - 1:50 pmBOS-LIR
8h 21m1 stop
American Airlines Logo
1:25 pm - 12:55 amLIR-BOS
10h 30m1 stop
$398American Airlines
Find Deal
dom., dic. 7 - dom., dic. 14
American Airlines Logo
7:18 pm - 12:20 pmBOS-LIR
18h 02m1 stop
American Airlines Logo
3:35 pm - 2:01 pmLIR-BOS
21h 26m1 stop
$399American Airlines
Find Deal
lun., ene. 19 - sáb., ene. 24

Spirit Airlines flights from Boston to Costa Rica

Our best Spirit Airlines deals on Boston to Costa Rica flight tickets
Spirit Airlines
Oct 4
BOS6:10 amBoston Logan Intl
7h 04m
1 stop
SJO11:14 amSan José Juan Santamaria Intl
Oct 11
SJO12:35 pmSan José Juan Santamaria Intl
9h 24m
1 stop
BOS11:59 pmBoston Logan Intl
$241
Find similar
Spirit Airlines
Oct 26
BOS6:16 amBoston Logan Intl
7h 14m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
Nov 4
SJO1:35 pmSan José Juan Santamaria Intl
9h 24m
1 stop
BOS11:59 pmBoston Logan Intl
$242
Find similar
Spirit Airlines
Oct 17
BOS8:24 pmBoston Logan Intl
17h 06m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
Oct 24
SJO12:35 pmSan José Juan Santamaria Intl
9h 24m
1 stop
BOS11:59 pmBoston Logan Intl
$243
Find similar

Copa Airlines flights from Boston to Costa Rica

Our best Copa Airlines deals on Boston to Costa Rica flight tickets
Copa Airlines
Oct 28
BOS3:49 pmBoston Logan Intl
18h 30m
1 stop
SJO8:19 amSan José Juan Santamaria Intl
Nov 3
SJO4:08 amSan José Juan Santamaria Intl
16h 55m
1 stop
BOS10:03 pmBoston Logan Intl
$288
Find similar
Copa Airlines
Oct 16
BOS3:49 pmBoston Logan Intl
27h 03m
3 stops
SJO4:52 pmSan José Juan Santamaria Intl
Oct 30
SJO10:08 amSan José Juan Santamaria Intl
10h 54m
1 stop
BOS11:02 pmBoston Logan Intl
$293
Find similar
Copa Airlines
Nov 6
BOS2:42 pmBoston Logan Intl
18h 37m
1 stop
SJO8:19 amSan José Juan Santamaria Intl
Nov 8
SJO4:08 amSan José Juan Santamaria Intl
7h 52m
1 stop
BOS1:00 pmBoston Logan Intl
$303
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Costa Rica that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated septiembre 15, 2025.
Use the filters below to find and compare flights from Boston to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

sáb. 10/4

6:10 am-11:14 am

1 stop7h 04m

San José Juan Santamaria Intl

sáb. 10/11

12:35 pm-11:59 pm

1 stop9h 24m

$241

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

dom. 10/26

6:16 am-11:30 am

1 stop7h 14m

San José Juan Santamaria Intl

mar. 11/4

1:35 pm-11:59 pm

1 stop9h 24m

$242

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

mar. 10/28

3:49 pm-8:19 am

1 stop18h 30m

San José Juan Santamaria Intl

lun. 11/3

4:08 am-10:03 pm

1 stop16h 55m

$288

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

jue. 10/16

3:49 pm-4:52 pm

3 stops27h 03m

San José Juan Santamaria Intl

jue. 10/30

10:08 am-11:02 pm

1 stop10h 54m

$293

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

dom. 10/26

6:05 am-12:46 pm

1 stop8h 41m

Liberia

sáb. 11/1

1:55 pm-12:03 am

1 stop8h 08m

$345

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

dom. 10/26

5:10 am-12:46 pm

1 stop9h 36m

Liberia

sáb. 11/1

3:40 pm-10:59 pm

Nonstop5h 19m

$359

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

sáb. 1/31

5:40 am-2:30 pm

1 stop9h 50m

Liberia

sáb. 2/7

1:55 pm-8:18 pm

Nonstop5h 23m

$383

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

mar. 10/28

5:40 am-11:40 am

1 stop8h 00m

Liberia

mié. 11/5

2:05 pm-11:59 pm

1 stop8h 54m

$384

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

dom. 12/7

6:29 am-1:50 pm

1 stop8h 21m

Liberia

dom. 12/14

1:25 pm-12:55 am

1 stop10h 30m

$398

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

lun. 1/19

7:18 pm-12:20 pm

1 stop18h 02m

Liberia

sáb. 1/24

3:35 pm-2:01 pm

1 stop21h 26m

$399

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Costa Rica from

How to get the cheapest flight ticket from Boston to Costa Rica

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Costa Rica?

The cheapest month to fly to Costa Rica from Boston is in September. Flight prices, which tend to average around $403, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in September, then May is your next best option. Flight prices from Boston to Costa Rica during May average around $455.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Tuesday is the cheapest day to fly to Costa Rica from Boston. The lowest ticket price found for a Tuesday departure recently was $450. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $660. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

What is the cheapest time of day to depart on your flight to Costa Rica?

In the evening is the cheapest time of day to fly from Boston to Costa Rica when you can find flight prices for as low as $445. Flying to Costa Rica in the evening is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly in the morning, with an average ticket price of $583. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Boston Logan Intl to Costa Rica flight route?

Fly from Boston Logan Intl to Liberia for the best Boston Logan Intl - Costa Rica flight prices

How far in advance should I book a flight to Costa Rica?

You are more likely to see cheaper flights to Costa Rica from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $539 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Boston for as low as $453 on momondo.

What cabin class options are available on Boston Logan Intl to Costa Rica flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to Costa Rica flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Costa Rica flights?

You could potentially save up to 30% on your flight if you consider stops on a Boston to Costa Rica flight.

Cheap Boston to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Costa Rica

Best Price Found

$216

Fastest flight time

5h 47m

Direct flights

Every day

Airports in Costa Rica

1 airport
The best one-way flight to Costa Rica from Boston in the past 72 hours is $216. The best round-trip flight deal from Boston to Costa Rica found on momondo in the last 72 hours is $438.
The fastest flight from Boston to Costa Rica takes 5h 47m
Direct flights go from Boston to Costa Rica every day.
There is 1 airport near Costa Rica: Liberia (LIR)
Search flight deals

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Costa Rica?

    Prices for flights from Boston Logan Intl Airport to Costa Rica are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Costa Rica?

  • How old do you have to be to fly from Boston Logan Intl Airport to Costa Rica?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The necessary travel and health documents for your Costa Rica trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Costa Rica?

Best airlines flying from Boston to Costa Rica

Compare and see reviews for airlines that fly from Boston to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $224Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Spirit AirlinesPriceFrom $238Free CancellationRating
6.3
8,015 reviews
Search Spirit Airlines flights
AviancaPriceFrom $289Free CancellationRating
6.7
2,435 reviews
Search Avianca flights
FrontierPriceFrom $297Free CancellationRating
5.8
3,172 reviews
Search Frontier flights
JetBluePriceFrom $310Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
Copa AirlinesPriceFrom $315Free CancellationRating
7.6
1,531 reviews
Search Copa Airlines flights
DeltaPriceFrom $319Free CancellationRating
7.9
7,954 reviews
Search Delta flights
American AirlinesPriceFrom $367Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $385Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
SouthwestPriceFrom $463Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Costa Rica?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to Costa Rica. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boston to Costa Rica with flexible booking policies on momondo?

Flights from Boston to Costa Rica with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to Costa Rica?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Costa Rica from Boston.

I’m not ready to book a flight from Boston to Costa Rica right now. Can momondo alert me if prices change?

Price alerts on flights to Costa Rica from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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