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Cheap flights from Boston to Costa Rica from $171

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 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
8:00 am - 10:15 pm
BOS
-
SJO
15h 15m
1 stop
Delta Logo
2:30 pm - 12:58 am
SJO
-
BOS
9h 28m
1 stop
$356Delta
wt., lis 10 - pon., lis 16
American Airlines Logo
7:19 pm - 11:05 am
BOS
-
SJO
17h 46m
2 stops
American Airlines Logo
2:45 pm - 12:34 am
SJO
-
BOS
7h 49m
1 stop
$361American Airlines
śr., paź 14 - śr., paź 21
Copa Airlines Logo
3:55 pm - 10:58 am
BOS
-
SJO
21h 03m
1 stop
Copa Airlines Logo
6:17 pm - 11:02 pm
SJO
-
BOS
26h 45m
1 stop
$364Copa Airlines
czw., wrz 24 - ndz., wrz 27
American Airlines Logo
6:45 am - 1:52 pm
BOS
-
SJO
9h 07m
1 stop
American Airlines Logo
2:57 pm - 12:59 am
SJO
-
BOS
8h 02m
1 stop
$366American Airlines
śr., wrz 2 - śr., wrz 16
American Airlines Logo
7:19 pm - 12:09 pm
BOS
-
SJO
18h 50m
2 stops
American Airlines Logo
1:23 pm - 11:06 am
SJO
-
BOS
20h 43m
1 stop
$368American Airlines
sob., paź 31 - pon., lis 2
Copa Airlines Logo
8:47 am - 9:04 am
BOS
-
SJO
26h 17m
1 stop
Copa Airlines Logo
10:03 am - 11:02 pm
SJO
-
BOS
10h 59m
1 stop
$373Copa Airlines
pon., paź 5 - czw., paź 8
Copa Airlines Logo
2:50 pm - 12:20 pm
BOS
-
SJO
22h 30m
1 stop
Copa Airlines Logo
5:52 pm - 9:59 pm
SJO
-
BOS
27h 07m
1 stop
$374Copa Airlines
pon., lis 2 - ndz., sty 31
Avianca Logo
4:50 pm - 11:40 pm
BOS
-
SJO
8h 50m
1 stop
Avianca Logo
5:05 am - 2:50 pm
SJO
-
BOS
7h 45m
1 stop
$375Avianca
śr., paź 14 - śr., paź 21
Air Canada Logo
5:30 am - 12:40 pm
BOS
-
LIR
9h 10m
1 stop
Air Canada Logo
2:40 pm - 9:37 am
LIR
-
BOS
17h 57m
1 stop
$418Air Canada
czw., paź 29 - sob., lis 7
Air Canada Logo
4:40 pm - 1:55 pm
BOS
-
LIR
23h 15m
1 stop
Air Canada Logo
2:40 pm - 4:57 pm
LIR
-
BOS
25h 17m
1 stop
$423Air Canada
sob., paź 31 - czw., lis 5

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GOL flights from Boston to Costa Rica

Our best GOL deals on Boston to Costa Rica flight tickets
GOL
Aug 23
BOS11:02 amBoston Logan Intl
10h 51m
2 stops
SJO7:53 pmSan José Juan Santamaria Intl
Sep 6
SJO2:56 pmSan José Juan Santamaria Intl
17h 39m
2 stops
BOS10:35 amBoston Logan Intl
$398
GOL
Aug 29
BOS2:02 pmBoston Logan Intl
7h 51m
1 stop
SJO7:53 pmSan José Juan Santamaria Intl
Sep 5
SJO2:53 pmSan José Juan Santamaria Intl
19h 23m
2 stops
BOS12:16 pmBoston Logan Intl
$403
GOL
Jun 21
BOS6:00 amBoston Logan Intl
18h 43m
1 stop
SJO10:43 pmSan José Juan Santamaria Intl
Jun 27
SJO3:08 pmSan José Juan Santamaria Intl
18h 03m
2 stops
BOS11:11 amBoston Logan Intl
$464

American Airlines flights from Boston to Costa Rica

Our best American Airlines deals on Boston to Costa Rica flight tickets
American Airlines
Oct 14
BOS7:19 pmBoston Logan Intl
17h 46m
2 stops
SJO11:05 amSan José Juan Santamaria Intl
Oct 21
SJO2:45 pmSan José Juan Santamaria Intl
7h 49m
1 stop
BOS12:34 amBoston Logan Intl
$361
American Airlines
Sep 2
BOS6:45 amBoston Logan Intl
9h 07m
1 stop
SJO1:52 pmSan José Juan Santamaria Intl
Sep 16
SJO2:57 pmSan José Juan Santamaria Intl
8h 02m
1 stop
BOS12:59 amBoston Logan Intl
$366
American Airlines
Oct 31
BOS7:19 pmBoston Logan Intl
18h 50m
2 stops
SJO12:09 pmSan José Juan Santamaria Intl
Nov 2
SJO1:23 pmSan José Juan Santamaria Intl
20h 43m
1 stop
BOS11:06 amBoston Logan Intl
$368

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 Czerwiec 18, 2026.
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

Cheapest round-trip

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

wt. 11/10

8:00 am-10:15 pm

1 stop15h 15m

San José Juan Santamaria Intl

pon. 11/16

2:30 pm-12:58 am

1 stop9h 28m

$356

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

śr. 10/14

7:19 pm-11:05 am

2 stops17h 46m

San José Juan Santamaria Intl

śr. 10/21

2:45 pm-12:34 am

1 stop7h 49m

$361

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

czw. 9/24

3:55 pm-10:58 am

1 stop21h 03m

San José Juan Santamaria Intl

ndz. 9/27

6:17 pm-11:02 pm

1 stop26h 45m

$364

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

śr. 9/2

6:45 am-1:52 pm

1 stop9h 07m

San José Juan Santamaria Intl

śr. 9/16

2:57 pm-12:59 am

1 stop8h 02m

$366

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

sob. 10/31

7:19 pm-12:09 pm

2 stops18h 50m

San José Juan Santamaria Intl

pon. 11/2

1:23 pm-11:06 am

1 stop20h 43m

$368

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

pon. 10/5

8:47 am-9:04 am

1 stop26h 17m

San José Juan Santamaria Intl

czw. 10/8

10:03 am-11:02 pm

1 stop10h 59m

$373

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

pon. 11/2

2:50 pm-12:20 pm

1 stop22h 30m

San José Juan Santamaria Intl

ndz. 1/31

5:52 pm-9:59 pm

1 stop27h 07m

$374
Quickest round-trip

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

śr. 10/14

4:50 pm-11:40 pm

1 stop8h 50m

San José Juan Santamaria Intl

śr. 10/21

5:05 am-2:50 pm

1 stop7h 45m

$375

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

czw. 10/29

5:30 am-12:40 pm

1 stop9h 10m

Liberia

sob. 11/7

2:40 pm-9:37 am

1 stop17h 57m

$418

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

sob. 10/31

4:40 pm-1:55 pm

1 stop23h 15m

Liberia

czw. 11/5

2:40 pm-4:57 pm

1 stop25h 17m

$423

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 $73, 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 $107.

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 from Boston 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 $459 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 $390 on momondo.

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

There are 2 cabin classes available to choose from on Boston 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

$561

Fastest flight time

5h 49m

Direct flights

Sun

Airports in Costa Rica

40 airports
The best flight deal from Boston to Costa Rica found on momondo in the last 72 hours is $561
The fastest flight from Boston to Costa Rica takes 5h 49m
Direct flights go from Boston to Costa Rica on Sunday. There are no airlines offering direct flights.
There are 40 airports in Costa Rica. From Boston there are direct flights to Liberia (LIR).
Search flight deals

Frequently asked questions about flying from Boston to Costa Rica

  • 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
DeltaPriceFrom $137Free CancellationRating
7.8
8,416 reviews
Search Delta flights
United AirlinesPriceFrom $159Free CancellationRating
7.4
9,861 reviews
Search United Airlines flights
Air CanadaPriceFrom $159Free CancellationRating
7.1
11,217 reviews
Search Air Canada flights
Copa AirlinesPriceFrom $178Free CancellationRating
7.6
1,567 reviews
Search Copa Airlines flights
JetBluePriceFrom $251Free CancellationRating
7.1
2,988 reviews
Search JetBlue flights
American AirlinesPriceFrom $286Free CancellationRating
7.1
11,699 reviews
Search American Airlines flights
GOLPriceFrom $316Free CancellationRating
7.3
1,234 reviews
Search GOL flights
AviancaPriceFrom $325Free CancellationRating
6.5
2,533 reviews
Search Avianca flights
FrontierPriceFrom $381Free CancellationRating
5.6
2,879 reviews
Search Frontier flights
SouthwestPriceFrom $470Free CancellationRating
7.9
4,239 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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