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Cheap flights from Boston to Costa Rica from $106

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 1/28. 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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0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
6:16 am - 12:25 pmBOS-SJO
7h 09m1 stop
Multiple Airlines Logo
7:22 am - 11:59 pmSJO-BOS
15h 37m2 stops
$237Multiple Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19
Spirit Airlines Logo
6:16 am - 11:39 amBOS-SJO
30h 23m2 stops
Spirit Airlines Logo
1:30 pm - 11:59 pmSJO-BOS
9h 29m1 stop
$243Spirit Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19
JetBlue Logo
8:15 pm - 8:53 amBOS-SJO
13h 38m1 stop
JetBlue Logo
10:00 am - 9:42 pmSJO-BOS
10h 42m1 stop
$244JetBlue
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Sun, Mar 1 - Wed, Mar 4
JetBlue Logo
8:30 pm - 8:52 amBOS-SJO
13h 22m1 stop
JetBlue Logo
9:38 am - 9:48 pmSJO-BOS
11h 10m1 stop
$249JetBlue
Find Deal
Sat, Dec 6 - Mon, Dec 22
American Airlines Logo
9:51 am - 10:30 pmBOS-SJO
13h 39m1 stop
American Airlines Logo
3:56 pm - 10:00 amSJO-BOS
17h 04m1 stop
$257American Airlines
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Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
6:15 pm - 1:09 pmBOS-SJO
19h 54m1 stop
American Airlines Logo
2:50 pm - 11:02 amSJO-BOS
18h 12m1 stop
$258American Airlines
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Tue, Mar 3 - Mon, Mar 9
Copa Airlines Logo
2:44 pm - 9:05 amBOS-SJO
19h 21m1 stop
Copa Airlines Logo
11:00 am - 10:40 pmSJO-BOS
10h 40m1 stop
$282Copa Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Copa Airlines Logo
2:44 pm - 4:50 pmBOS-SJO
27h 06m3 stops
Copa Airlines Logo
11:00 am - 10:03 pmSJO-BOS
10h 03m1 stop
$287Copa Airlines
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Thu, Nov 13 - Mon, Nov 17
Delta Logo
6:55 am - 10:15 pmBOS-SJO
16h 20m1 stop
Delta Logo
7:00 am - 1:04 amSJO-BOS
17h 04m1 stop
$306Delta
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Thu, Jan 29 - Thu, Feb 5
Delta Logo
6:25 pm - 12:40 pmBOS-LIR
19h 15m1 stop
Delta Logo
1:40 pm - 8:01 pmLIR-BOS
5h 21mnonstop
$335Delta
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Sun, Dec 14 - Sat, Dec 20

JetBlue flights from Boston to Costa Rica

Our best JetBlue deals on Boston to Costa Rica flight tickets
JetBlue
Mar 1
BOS8:15 pmBoston Logan Intl
13h 38m
1 stop
SJO8:53 amSan José Juan Santamaria Intl
Mar 4
SJO10:00 amSan José Juan Santamaria Intl
10h 42m
1 stop
BOS9:42 pmBoston Logan Intl
$244
Find similar
JetBlue
Dec 6
BOS8:30 pmBoston Logan Intl
13h 22m
1 stop
SJO8:52 amSan José Juan Santamaria Intl
Dec 22
SJO9:38 amSan José Juan Santamaria Intl
11h 10m
1 stop
BOS9:48 pmBoston Logan Intl
$249
Find similar
JetBlue
Mar 10
BOS8:15 pmBoston Logan Intl
13h 38m
1 stop
SJO7:53 amSan José Juan Santamaria Intl
Mar 13
SJO9:00 amSan José Juan Santamaria Intl
10h 42m
1 stop
BOS9:42 pmBoston Logan Intl
$272
Find similar

United Airlines flights from Boston to Costa Rica

Our best United Airlines deals on Boston to Costa Rica flight tickets
United Airlines
Feb 4
BOS7:05 amBoston Logan Intl
12h 11m
1 stop
SJO6:16 pmSan José Juan Santamaria Intl
Feb 11
SJO6:30 amSan José Juan Santamaria Intl
10h 31m
1 stop
BOS6:01 pmBoston Logan Intl
$252
Find similar
United Airlines
Nov 11
BOS12:00 pmBoston Logan Intl
8h 53m
1 stop
SJO7:53 pmSan José Juan Santamaria Intl
Dec 9
SJO8:45 amSan José Juan Santamaria Intl
13h 56m
2 stops
BOS11:41 pmBoston Logan Intl
$256
Find similar
United Airlines
Nov 8
BOS9:35 amBoston Logan Intl
12h 04m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
Nov 11
SJO11:28 pmSan José Juan Santamaria Intl
8h 46m
1 stop
BOS9:14 amBoston Logan Intl
$273
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 October 30, 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

Sat 11/15

6:16 am-12:25 pm

1 stop7h 09m

San José Juan Santamaria Intl

Wed 11/19

7:22 am-11:59 pm

2 stops15h 37m

$237

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Sat 11/15

6:16 am-11:39 am

2 stops30h 23m

San José Juan Santamaria Intl

Wed 11/19

1:30 pm-11:59 pm

1 stop9h 29m

$243

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Sun 3/1

8:15 pm-8:53 am

1 stop13h 38m

San José Juan Santamaria Intl

Wed 3/4

10:00 am-9:42 pm

1 stop10h 42m

$244

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Sat 12/6

8:30 pm-8:52 am

1 stop13h 22m

San José Juan Santamaria Intl

Mon 12/22

9:38 am-9:48 pm

1 stop11h 10m

$249

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Sat 2/7

9:51 am-10:30 pm

1 stop13h 39m

San José Juan Santamaria Intl

Sat 2/14

3:56 pm-10:00 am

1 stop17h 04m

$257

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Tue 3/3

6:15 pm-1:09 pm

1 stop19h 54m

San José Juan Santamaria Intl

Mon 3/9

2:50 pm-11:02 am

1 stop18h 12m

$258

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Tue 12/2

2:44 pm-9:05 am

1 stop19h 21m

San José Juan Santamaria Intl

Tue 12/9

11:00 am-10:40 pm

1 stop10h 40m

$282

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Thu 11/13

2:44 pm-4:50 pm

3 stops27h 06m

San José Juan Santamaria Intl

Mon 11/17

11:00 am-10:03 pm

1 stop10h 03m

$287

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

Thu 1/29

6:55 am-10:15 pm

1 stop16h 20m

San José Juan Santamaria Intl

Thu 2/5

7:00 am-1:04 am

1 stop17h 04m

$306

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

Sun 12/14

6:25 pm-12:40 pm

1 stop19h 15m

Liberia

Sat 12/20

1:40 pm-8:01 pm

Nonstop5h 21m

$335

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 $392, 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 October is your next best option. Flight prices from Boston to Costa Rica during October average around $404.

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 $521 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 $437 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 19% 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

$172

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 $172. The best round-trip flight deal from Boston to Costa Rica found on momondo in the last 72 hours is $378.
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 $161Free CancellationRating
7.1
10,383 reviews
Search Air Canada flights
Spirit AirlinesPriceFrom $221Free CancellationRating
6.3
8,115 reviews
Search Spirit Airlines flights
Copa AirlinesPriceFrom $275Free CancellationRating
7.6
1,561 reviews
Search Copa Airlines flights
JetBluePriceFrom $291Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
FrontierPriceFrom $297Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
DeltaPriceFrom $309Free CancellationRating
7.9
7,998 reviews
Search Delta flights
American AirlinesPriceFrom $333Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
AviancaPriceFrom $334Free CancellationRating
6.6
2,467 reviews
Search Avianca flights
United AirlinesPriceFrom $378Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
SouthwestPriceFrom $463Free CancellationRating
8.0
4,243 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.

An easier way to manage your Costa Rica trip

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