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Cheap flights from Boston to Costa Rica from $87

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 9/9. 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
6:05 am - 11:12 amBOS-SJO
7h 07m1 stop
Spirit Airlines Logo
12:19 pm - 11:57 pmSJO-BOS
9h 38m1 stop
$208Spirit Airlines
Find Deal
sáb., ago. 30 - sáb., sep. 6
Spirit Airlines Logo
6:05 am - 11:12 amBOS-SJO
7h 07m1 stop
Spirit Airlines Logo
12:18 pm - 11:49 pmSJO-BOS
9h 31m1 stop
$250Spirit Airlines
Find Deal
jue., ago. 28 - mié., sep. 3
JetBlue Logo
6:40 am - 11:55 amBOS-SJO
7h 15m1 stop
JetBlue Logo
1:00 pm - 11:59 pmSJO-BOS
8h 59m1 stop
$280JetBlue
Find Deal
mar., sep. 16 - mar., sep. 23
JetBlue Logo
6:25 am - 11:55 amBOS-SJO
7h 30m1 stop
JetBlue Logo
1:00 pm - 11:59 pmSJO-BOS
8h 59m1 stop
$299JetBlue
Find Deal
lun., sep. 1 - mar., sep. 9
Copa Airlines Logo
3:49 pm - 9:04 amBOS-SJO
19h 15m1 stop
Copa Airlines Logo
4:08 am - 10:03 pmSJO-BOS
16h 55m1 stop
$323Copa Airlines
Find Deal
jue., oct. 30 - dom., nov. 2
Copa Airlines Logo
2:42 pm - 8:19 amBOS-SJO
18h 37m1 stop
Copa Airlines Logo
4:08 am - 10:03 pmSJO-BOS
16h 55m1 stop
$326Copa Airlines
Find Deal
lun., nov. 10 - mar., nov. 18
Delta Logo
5:35 am - 12:00 pmBOS-LIR
8h 25m1 stop
Delta Logo
1:25 pm - 1:18 amLIR-BOS
9h 53m1 stop
$343Delta
Find Deal
lun., sep. 15 - mié., sep. 17
American Airlines Logo
5:55 am - 12:59 pmBOS-LIR
9h 04m1 stop
American Airlines Logo
12:35 pm - 7:35 amLIR-BOS
17h 00m2 stops
$347American Airlines
Find Deal
mié., ago. 20 - mié., ago. 27
American Airlines Logo
5:47 am - 11:49 amBOS-LIR
8h 02m1 stop
American Airlines Logo
2:02 pm - 11:50 amLIR-BOS
19h 48m1 stop
$361American Airlines
Find Deal
sáb., sep. 6 - sáb., sep. 20
Delta Logo
7:25 am - 12:30 pmBOS-LIR
6h 05mnonstop
Delta Logo
1:55 pm - 8:18 pmLIR-BOS
5h 23mnonstop
$392Delta
Find Deal
sáb., ene. 10 - sáb., ene. 17

Spirit Airlines flights from Boston to Costa Rica

Our best Spirit Airlines deals on Boston to Costa Rica flight tickets
Spirit Airlines
Aug 30
BOS6:05 amBoston Logan Intl
7h 07m
1 stop
SJO11:12 amSan José Juan Santamaria Intl
Sep 6
SJO12:19 pmSan José Juan Santamaria Intl
9h 38m
1 stop
BOS11:57 pmBoston Logan Intl
$208
Find similar
Spirit Airlines
Aug 28
BOS6:05 amBoston Logan Intl
7h 07m
1 stop
SJO11:12 amSan José Juan Santamaria Intl
Sep 3
SJO12:18 pmSan José Juan Santamaria Intl
9h 31m
1 stop
BOS11:49 pmBoston Logan Intl
$250
Find similar
Spirit Airlines
Aug 28
BOS6:05 amBoston Logan Intl
7h 07m
1 stop
SJO11:12 amSan José Juan Santamaria Intl
Sep 4
SJO12:19 pmSan José Juan Santamaria Intl
9h 36m
1 stop
BOS11:55 pmBoston Logan Intl
$253
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 30
BOS3:49 pmBoston Logan Intl
19h 15m
1 stop
SJO9:04 amSan José Juan Santamaria Intl
Nov 2
SJO4:08 amSan José Juan Santamaria Intl
16h 55m
1 stop
BOS10:03 pmBoston Logan Intl
$323
Find similar
Copa Airlines
Nov 10
BOS2:42 pmBoston Logan Intl
18h 37m
1 stop
SJO8:19 amSan José Juan Santamaria Intl
Nov 18
SJO4:08 amSan José Juan Santamaria Intl
16h 55m
1 stop
BOS10:03 pmBoston Logan Intl
$326
Find similar
Copa Airlines
Aug 7
BOS4:05 pmBoston Logan Intl
18h 59m
1 stop
SJO9:04 amSan José Juan Santamaria Intl
Aug 11
SJO10:05 amSan José Juan Santamaria Intl
10h 22m
1 stop
BOS10:27 pmBoston Logan Intl
$431
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 agosto 1, 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. 8/30

6:05 am-11:12 am

1 stop7h 07m

San José Juan Santamaria Intl

sáb. 9/6

12:19 pm-11:57 pm

1 stop9h 38m

$208

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

jue. 8/28

6:05 am-11:12 am

1 stop7h 07m

San José Juan Santamaria Intl

mié. 9/3

12:18 pm-11:49 pm

1 stop9h 31m

$250

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

mar. 9/16

6:40 am-11:55 am

1 stop7h 15m

San José Juan Santamaria Intl

mar. 9/23

1:00 pm-11:59 pm

1 stop8h 59m

$280

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

lun. 9/1

6:25 am-11:55 am

1 stop7h 30m

San José Juan Santamaria Intl

mar. 9/9

1:00 pm-11:59 pm

1 stop8h 59m

$299

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

jue. 10/30

3:49 pm-9:04 am

1 stop19h 15m

San José Juan Santamaria Intl

dom. 11/2

4:08 am-10:03 pm

1 stop16h 55m

$323

BostonSan José

BOS - SJO

BOSSJO

Boston Logan Intl

lun. 11/10

2:42 pm-8:19 am

1 stop18h 37m

San José Juan Santamaria Intl

mar. 11/18

4:08 am-10:03 pm

1 stop16h 55m

$326

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

lun. 9/15

5:35 am-12:00 pm

1 stop8h 25m

Liberia

mié. 9/17

1:25 pm-1:18 am

1 stop9h 53m

$343

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

mié. 8/20

5:55 am-12:59 pm

1 stop9h 04m

Liberia

mié. 8/27

12:35 pm-7:35 am

2 stops17h 00m

$347

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

sáb. 9/6

5:47 am-11:49 am

1 stop8h 02m

Liberia

sáb. 9/20

2:02 pm-11:50 am

1 stop19h 48m

$361

BostonLiberia

BOS - LIR

BOSLIR

Boston Logan Intl

sáb. 1/10

7:25 am-12:30 pm

Nonstop6h 05m

Liberia

sáb. 1/17

1:55 pm-8:18 pm

Nonstop5h 23m

$392

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 $385, 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 $454.

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 $543 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 $441 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 20% 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

$87

Fastest flight time

5h 37m

Direct flights

Every day

Airports in Costa Rica

2 airports
The best one-way flight to Costa Rica from Boston in the past 72 hours is $87. The best round-trip flight deal from Boston to Costa Rica found on momondo in the last 72 hours is $208.
The fastest flight from Boston to Costa Rica takes 5h 37m
Direct flights go from Boston to Costa Rica every day.
There are 2 airports near Costa Rica: Liberia (LIR), San José Juan Santamaria Intl (SJO)
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
9,851 reviews
Search Air Canada flights
Spirit AirlinesPriceFrom $250Free CancellationRating
6.3
8,048 reviews
Search Spirit Airlines flights
AviancaPriceFrom $288Free CancellationRating
6.7
2,388 reviews
Search Avianca flights
Copa AirlinesPriceFrom $297Free CancellationRating
7.5
1,493 reviews
Search Copa Airlines flights
FrontierPriceFrom $297Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
JetBluePriceFrom $319Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
DeltaPriceFrom $348Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $384Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $401Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
SouthwestPriceFrom $463Free CancellationRating
8.0
4,246 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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