$136 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 5/20. 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.
1 adult
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$280
Liberia
Liberia1 stop$370
San José
San José1 stop$280
Liberia
Liberia1 stop$370

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

Sun, Apr 12 - Fri, Apr 17
Multiple Airlines Logo
5:30 am - 12:12 pm
BOS
-
SJO
8h 42m
1 stop
Multiple Airlines Logo
1:05 pm - 12:33 am
SJO
-
BOS
9h 28m
1 stop
$280Multiple Airlines
Thu, Apr 9 - Tue, Apr 14
Multiple Airlines Logo
5:30 am - 12:12 pm
BOS
-
SJO
8h 42m
1 stop
Multiple Airlines Logo
12:19 pm - 11:20 pm
SJO
-
BOS
9h 01m
1 stop
$284Multiple Airlines
Sat, Apr 11 - Tue, Apr 21
Multiple Airlines Logo
12:40 pm - 12:12 pm
BOS
-
SJO
25h 32m
1 stop
Multiple Airlines Logo
1:45 pm - 11:52 pm
SJO
-
BOS
8h 07m
1 stop
$297Multiple Airlines
Wed, May 13 - Tue, Jun 9
Multiple Airlines Logo
4:50 pm - 11:40 pm
BOS
-
SJO
8h 50m
1 stop
Multiple Airlines Logo
7:48 pm - 10:45 am
SJO
-
BOS
12h 57m
1 stop
$298Multiple Airlines
Thu, May 7 - Tue, May 12
Copa Airlines Logo
4:00 pm - 7:09 am
BOS
-
SJO
17h 09m
1 stop
Copa Airlines Logo
8:47 am - 11:08 pm
SJO
-
BOS
12h 21m
1 stop
$308Copa Airlines
Mon, May 18 - Fri, May 29
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
$309Avianca
Mon, Jun 1 - Thu, Jun 4
JetBlue Logo
6:00 am - 11:55 am
BOS
-
SJO
7h 55m
1 stop
JetBlue Logo
12:40 pm - 11:06 pm
SJO
-
BOS
8h 26m
1 stop
$315JetBlue
Sun, May 17 - Fri, May 29
American Airlines Logo
5:00 am - 11:22 am
BOS
-
LIR
8h 22m
1 stop
American Airlines Logo
12:35 pm - 8:41 am
LIR
-
BOS
18h 06m
2 stops
$370American Airlines
Tue, Apr 14 - Wed, Apr 15
JetBlue Logo
9:52 am - 1:35 pm
BOS
-
LIR
5h 43mnonstop
JetBlue Logo
2:55 pm - 10:18 pm
LIR
-
BOS
5h 23mnonstop
$397JetBlue
Sun, May 17 - Fri, May 29
American Airlines Logo
5:00 am - 11:22 am
BOS
-
LIR
8h 22m
1 stop
American Airlines Logo
12:35 pm - 10:06 am
LIR
-
BOS
19h 31m
1 stop
$406American Airlines
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 $359 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 $359.

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $527 on average.

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 October, when tickets cost $347 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $631 and $543 respectively.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$136
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 2% 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.

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 8362 reviews
7.8Entertainment
7.2Food
8.1Boarding
7.9Comfort
8.5Crew
Airline reviews

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

10.0 ExcellentAnonymous, Mar 2026
SAT - LAX
Read more Delta reviews

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

Excellent service, I love the soft blush pink mood lighting on the 767-400ER during meal service. The overhead gasper vents on the 767-400ER were also very strong with a lot of airflow to keep me comfortable on my flight.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

Avoid at all costs. My wife had to stay back on a connecting flight as her parents flight was delayed. 10 days later on the way back they cancelled all our flights. We had to rebook all four of us on the next days flight.

Copa staff at PTY and one particular crew member were unhelpful & rude.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

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.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

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.

Absolutely horrible. Flight was delayed 4 hours and they had no clue what was going on.

Onboard functioning wide-variety entertainment on a budget and having an open pantry is nice. Seats are not comfortable but go provide plenty of legroom for a 6'2" 260lbs man.

Even though the weather made a lot of flights become cancelled Jet Blue made the flight that was supposed to leave at 9 pm and we left at 12:15 am and I was so grateful- Thanks to the Senior Jet Blue Staff who made those decisions

Worst customer service ever experienced on the planet, dirty plane, no communication, and severe delays

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

Delayed by 1.5 hours. Terrible apologies, half hearted at best. It will be a LONG time until i book w Jet Blue again. Very disappointed.

My check in was stressful. I somehow lost my seat from my original booking, the plane showed no availability/no seat when it was time to check-in. I called and was instructed to try to get a seat at the airport. I asked if it was a full flight and the travel agent said the site showed some seating but was not able to secure one for me. Why not? On my way to the airport the app finally revealed one available seat towards the back of the aircraft that I was able to book. It ended up being an overbooked flight, so glad I wasn't stuck.

Flights with JetBlue from San Diego to Boston are a miserable experience. The flight was delayed about 1.5 hours due to “weather” supposedly but the flights for other airlines left on time so it just have been some kind of weather that only affects JetBlue. I had a small carry on - purse. The crew stored it in a bin 2 rows down from me because they were using the bin next to my seat for other people’s stuff. The TV screen in the emergency row seats does not work. It just was awful from start to finish. When we landed, we had to sit inside the plane for a very long time because the plane had to be moved to a different gate.

They made me check my bag and I didn't need to as there was overhead space available. I paid for a seat towards the front of the plane and it didn't recline. I requested a refund and they declined to give me one.

I have to congratulate Kayak (and Dylan the Chatdeal agent) because because when we decided extended our trip in Florida by two days, there were many direct flights oprions back to Boston available on the Friday we wanted to fly on the JetBlue website, but once I canceled the original JetBlue flight on their website, those direct return options disappeared immediatley! I think it's a game JetBlue plays. . Luckily, I checked Kayak and they had a direct flight that wasn't appearing on JetBlue's website and so I booked it, and we were able to fly home direct through the Kayak booking when JetBlue was offering nothing (even though I have been a True Blue member for 20 years, and also am a Mosaic member). So much for loyalty- their algorithm for booking is like a shell game. JetBlue used to be a good company but now they're worse than anyone. Also I was originally booked this trip to Florida, two months before the departure date, I booked the trip on JetBlue's website and then after the payment part, they said there was a problem and that I needed to do the booking again, so when I immediately went to rebook , the price had gone up 30%! I called them and it sounded like they had heard this so many times before and the guy told me to check back in 10 minutes and the price would be back to where it was when I was booking- it but it never was. How could the price go up 30% in one minute two months before the flight???? They're playing a game with their customers. Anyways, I booked a cheaper flight then at a less convenient time. So fast forward two months the night before the 7 AM flight, they sent me an email at midnight when I was sleeping to let me know that my flight at 7 AM had been canceled. The only thing they offered was a flight that night from from a different airport (Providence) to a different airport in Florida (West Palm Beach) or a flight two days later. No compensation, nothing. They couldn't of tried to get another plane to the Boston airport? They had all night to do it. I passed on their ridiculous options and flew with Delta and it was a great experience. Of course, I had to pay a lot more booking on the same day, but JetBlue doesn't care. I put in a lengthy complaint with the agent who assured me someone would get back to me by email within three days and I haven't heard a thing. JetBlue used to be a good company but now they're among the worst. The only thing they still have is decent legroom, but the corporate bean counters will probably start taking that away too.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

For an international flight the seats were smaller than most flight I have been on in economy. I don’t know the size of the seats or perhaps it was the size of the seat dividers that made the seats feel smaller and little amount of space to even turn your body if you needed to

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

The flight changed gates multiple times and flight had to be delayed multiple times

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

I was in last row so that is never great bc the person in front of me leaned his seat all the way back into me.

Every connection was late but that meant I was not running from one to the next so that was a good thing. No one wants to miss a connection

Food and entertainment see irrelevant to rate them as that’s not really an option anymore. The flight was fast and friendly. The plane was immaculately clean.

it was great except the extra charges. for carry on ,seat choice, and wifi. these should all be included in flight charge. The extra charges are redicuolouse and because of that I will not be flying spirit again

Nothing. We didn’t even have a pilot until one hour after our flight was set to depart and now we are waiting for a gate on a very hot packed aircraft. Spirit has lost its goddamn minds and we will never fly again. On the way down the delay went from 5 minutes to 6 hours to cancelled.

We had to take a bus to the plane with a old woman and carry on bags, and at landing at the airport we have to wait one hour seating on the plane waiting for a gate. We came back from Australia Bussines class Quantas 16 hours traveling, then wait in Dallas 7 hours for connection...honestly waiting 1 hour more at the plane was the worst part.

Flight delayed twice (not Spirit fault) No food served* No entertainment * *in response to my choices in the rating. None was provided so couldn’t rate properly

Delayed over two hours. Only knew about a 30 minute delay in advance

Poor service but I guess that’s what you get for picking cheap flight. Overacted with all extra up-charge fees, so annoying.

They canceled both the flight to Myrtle beach and the return flight. They are an awful airline and they ruined my trip. I will never book with Spirit again.

The flight was a big joke very uncomfortable I had a horrible experience and I will never fly with them again everything about the flight was bogus and I’m not happy with it at all this experience makes me not want to fly ever again

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

Information on your arrival and departure airports