$110 Find Cheap Flights from Boston to Costa Rica

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Costa Rica departing on 11/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy, 0 bags

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Cheap Flights from Boston to Costa Rica

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José1 stop$244
Liberia
Liberia1 stop$317
San José
San José1 stop$244
Liberia
Liberia1 stop$317

Book Cheap Boston to Costa Rica Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Costa Rica that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Costa Rica

Fri, Jan 23 - Wed, Jan 28
United Airlines Logo
11:42 am - 8:39 pmBOS-SJO
9h 57m1 stop
United Airlines Logo
9:05 am - 6:32 pmSJO-BOS
8h 27m1 stop
$244United Airlines
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Fri, Jan 23 - Wed, Jan 28
United Airlines Logo
11:42 am - 8:39 pmBOS-SJO
9h 57m1 stop
United Airlines Logo
6:30 am - 9:52 pmSJO-BOS
14h 22m2 stops
$248United Airlines
Find Deal
Sun, Feb 1 - Fri, Feb 6
American Airlines Logo
7:00 am - 10:30 pmBOS-SJO
16h 30m1 stop
American Airlines Logo
6:38 am - 6:59 pmSJO-BOS
11h 21m1 stop
$249American Airlines
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Sun, Dec 7 - Fri, Dec 12
United Airlines Logo
7:00 am - 8:39 pmBOS-SJO
14h 39m1 stop
United Airlines Logo
11:28 pm - 9:14 amSJO-BOS
8h 46m1 stop
$252United Airlines
Find Deal
Mon, Feb 2 - Wed, Feb 11
American Airlines Logo
7:00 am - 10:30 pmBOS-SJO
16h 30m1 stop
American Airlines Logo
6:00 am - 7:02 pmSJO-BOS
12h 02m2 stops
$253American Airlines
Find Deal
Tue, Feb 3 - Sat, Feb 14
American Airlines Logo
7:00 am - 10:30 pmBOS-SJO
16h 30m1 stop
American Airlines Logo
7:00 am - 11:59 pmSJO-BOS
15h 59m1 stop
$254American Airlines
Find Deal
Tue, Feb 3 - Wed, Feb 11
American Airlines Logo
11:10 am - 10:30 pmBOS-SJO
12h 20m2 stops
American Airlines Logo
6:00 am - 7:07 pmSJO-BOS
12h 07m2 stops
$255American Airlines
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Fri, Dec 5 - Fri, Dec 12
American Airlines Logo
6:00 am - 10:28 pmBOS-SJO
17h 28m1 stop
American Airlines Logo
1:02 pm - 12:15 amSJO-BOS
10h 13m1 stop
$257American Airlines
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Fri, Feb 13 - Sun, Feb 22
JetBlue Logo
6:00 am - 1:00 pmBOS-SJO
8h 00m1 stop
JetBlue Logo
1:15 pm - 11:59 pmSJO-BOS
9h 44m1 stop
$258JetBlue
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Sun, Dec 7 - Wed, Dec 10
Delta Logo
5:40 am - 12:40 pmBOS-LIR
8h 00m1 stop
Delta Logo
2:05 pm - 1:27 amLIR-BOS
10h 22m1 stop
$325Delta
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Booking Insights

KAYAK's insights & trends for Boston to Costa Rica flights

Get data-powered insights and trends into flights from Boston to Costa Rica to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Boston to Costa Rica flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Costa Rica from Boston found in the last 72 hours was to Liberia, at $290 round-trip. The most popular route is from Boston (BOS) to Liberia (LIR), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $290.

Can I save money by flying with a layover from Boston to Costa Rica?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $432, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boston to Costa Rica?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Costa Rica, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Costa Rica is September, when tickets cost $389 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $706 and $584 respectively.

What’s the cheapest day of the week to fly from Boston to Costa Rica?

The average price of all round-trip flights from Boston to Costa Rica clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Costa Rica on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Boston to Costa Rica. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Costa Rica, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Costa Rica, you should book around 2 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$110
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from Boston to San José

FAQs - booking Costa Rica flights

  • What other airports are there in Costa Rica?

    In addition to San Jose Airport, there is Daniel Oduber International Airport (LIR). This airport is about an 18min drive from the city of Liberia, which is part of the Guanacaste Province in the northern part of Costa Rica. Along with the benefit of its location, you should choose this airport if you want a non-stop flight. JetBlue offers a non-stop afternoon flight from Boston to Liberia.

  • How can I get from the airports in Costa Rica to the city center?

    You can catch a bus from San Jose Airport into the city center. The TUASA bus picks up its passengers outside of the arrival hall. Riding the bus will take about 35min and it is the cheapest mode of transportation from the airport. You can also hail a taxi close to the bus stop. A taxi ride will take about 20min. If you fly to Liberia Airport, you can get to the city in less than 30min on the bus. A taxi, on the other hand, will take about 16min.

  • Are there rental car agencies at the airports in Costa Rica?

    There are several car rental agencies at the San Jose Airport. Many of these are national brands such as National Car Rental, Hertz, Alamo, and Enterprise. The car rental offices are located in Terminal M and you'll have to take a shuttle bus to pick up your rental car. In Liberia, you can also rent a car at the airport. Some agencies with offices at Liberia Airport include Budget, Avis and Dollar.

  • Can I exchange my US dollars to the Costa Rican colon?

    Yes, you can exchange your US dollars for the Costa Rican colon at the San Jose Airport. The currency exchange center is located in Terminal A. Along with a currency exchange center, there are also ATM machines around the airport. At Liberia Airport, the currency exchange center is between gates 3 and 4. There are also ATM machines at the airport in Liberia.

  • How does KAYAK find such low prices on flights from Boston to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boston to Costa Rica with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boston to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Costa Rica?

    The cheapest time of day to fly to Costa Rica is generally at night, when round-trip flights cost $445 on average. Morning departures are around 20% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the morning, which is peak travel time and where the average cost of a ticket is $583.

Top tips for finding cheap flights to Costa Rica

  • If you need to relax before your return flight leaves to Boston, there is a chapel where you can pray or meditate in the Mezzanine Hall of the San Jose Airport in Costa Rica.
  • Flying from Boston (BOS) to San Jose, Costa Rica, you'll have one or two plane changes. Your layover could be in Newark (EWR), New York (JFK), Panama City (PTY), or Fort Lauderdale (FLL).
  • You can park your car long-term at Boston Logan International Airport. There is garage parking as well as lot and economy parking. When you choose economy parking, you'll have to catch a shuttle from the lot to the airport.
  • While waiting for your flight to leave from San Jose Airport, you can enjoy a visit to the airport lounge. The lounge is available to all passengers for a fee.
  • Grab a bite to eat at Boston Logan International Airport before boarding the plane. Some airport restaurants include Sbarro, Wahlburgers and Potbelly Sandwich Shop. There are also bars and coffee shops at the airport, such as Starbucks and the Boston Bruins Bar.

Reviews of the top 5 airlines serving from Boston to Costa Rica

 
Need help choosing which airline to fly with from Boston to Costa Rica? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8000 reviews
7.3Food
7.9Comfort
8.5Crew
7.9Entertainment
8.1Boarding
Airline reviews

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

10.0 ExcellentWilliam, Nov 2025ATL - SJO
Read more Delta reviews

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

The flighr attandants were very rude they ignored me didnt offer me anything to drink throughoit the 4 hour flight i feel i was targeted and ignored because i was a darkskin latino man.

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

I had a positive experience on American. I'm blind and traveling with a guide dog and the flight attendants were so kind, friendly, and helpful towards us. They checked in on us during the flight and they made us feel comfortable and welcomed. There was an hour delay before depature, but overall the flight was a smooth ride. I appreciate that there were no issues on this long flight back home.

We were told the flight was delayed 5 times, then it was moved to the next day.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

There was a fowl odour coming from the lavatory the entire flight

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

They have the most inexperienced / rude flight staff I’ve encountered

The plane was freezing and everyone had on their winter coats. I pulled out my sweaters out of my carryon to cover myself and put on an extra pair of socks. They offered NO FREE drinks or snacks on a 6 hour flight. The seats don’t have plugs or charges or any form of entertainment- so I just played my one downloaded game on my phone because I couldn’t sleep because I was too cold. Miserable flight though we landed safely.

Bought round trip tickets. Ended up upgrading to first class. Both flights were new planes but hadn’t been equipped with WiFi and there were no charging ports at my seat despite it being new and first class accommodations.

The flight was on time and the crew was very professional and accommodating. When other airlines are canceling flights Spirit is still flying with on time flights. I have no complaints and will continue to choose Spirit when it is the best option for me.

Very uncomfortable seat. Hard bar under cushion. Flight had no solution except to walk a around at times

Endless, trip oof my life, we still are in in plane waiting for getting off.after 3 hours delay. Not even a glass of water.

It was cheap. Spirit is what it is. I got to my destination and home safely. There was no food or entertainment without paying extra, which is fine. That’s why the flight was inexpensive.

Like: seats that don't move; fast boarding; engaging crew; low-prices; individual gate at LGA; access to restrooms at the gate Dislike: no water on the flight

No leg room. My knee was sore for a day.

It was better than expected. But there were two delays in taking off.

To be Honest they canceled my flight and didn't have other options. Until 4 says later and I have a 2yr old very disappointed.

Everything you need to know for your flight from Boston to Costa Rica

Information on your arrival and departure airports