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$264+ Cheap flights from Boston (BOS) to Barcelona

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Barcelona are usually found in January or February, booked 24 days in advance, depart on a Monday or Thursday and return on a Thursday

Cheap flight deals from Boston to Barcelona

Cheapest flights from Boston to Barcelona
Explore the most affordable flight options available from Boston to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:35 pm
BOS
-
BCN
Nonstop7h 05m
Multiple Airlines
Thu 10/226:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/19$470
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:50 pm
BOS
-
BCN
2 stops17h 40m
Multiple Airlines
Thu 10/226:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/18$492
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:50 pm
BOS
-
BCN
2 stops18h 40m
Multiple Airlines
Wed 10/216:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/18$496
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:50 pm
BOS
-
BCN
2 stops17h 40m
Multiple Airlines
Wed 10/216:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/20$499
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:55 pm
BOS
-
BCN
Nonstop7h 05m
Multiple Airlines
Sun 10/255:55 am
BCN
-
BOS
2 stops20h 05m
Multiple Airlines
Deal found 7/18$500
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:50 pm
BOS
-
BCN
2 stops15h 20m
Multiple Airlines
Wed 10/216:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/18$502
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:50 pm
BOS
-
BCN
2 stops18h 40m
Multiple Airlines
Thu 10/226:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/22$505
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:25 pm
BOS
-
GRO
1 stop23h 30m
Multiple Airlines
Sun 8/308:25 am
GRO
-
BOS
2 stops30h 40m
Multiple Airlines
Deal found 7/21$901
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:00 pm
BOS
-
GRO
2 stops18h 40m
Multiple Airlines
Fri 9/116:15 am
GRO
-
BOS
1 stop14h 40m
Multiple Airlines
Deal found 7/21$995
This Mytrip deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:40 am
BOS
-
GRO
3 stops31h 15m
Multiple Airlines
Thu 8/2711:20 pm
GRO
-
BOS
2 stops27h 00m
Multiple Airlines
Deal found 7/21$1,055

Find flight deals from Boston to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 23, 2026.

Round-trip from

$470
(Kiwi.com)

One-way from

$264
(oojo)

Popular in

June

Cheapest in

January

Average price

$784
From Boston Logan Intl to Barcelona
Search Deals
One-way flight from Boston Logan Intl to Barcelona
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Barcelona 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, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Boston to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 10/13

9:50 pm-10:45 am

1 stop30h 55m

Barcelona-El Prat

Sun 10/18

2:35 pm-7:55 pm

1 stop35h 20m

$649

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 10/8

9:50 pm-10:45 am

1 stop30h 55m

Barcelona-El Prat

Mon 10/12

7:40 am-7:55 pm

1 stop18h 15m

$649

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 9/16

9:50 pm-11:15 pm

1 stop19h 25m

Barcelona-El Prat

Wed 10/21

12:10 pm-7:55 pm

1 stop37h 45m

$649

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 9/25

5:40 pm-9:45 am

2 stops34h 05m

Barcelona-El Prat

Tue 10/6

6:45 pm-3:35 pm

2 stops26h 50m

$690

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 9/11

5:10 pm-9:00 am

1 stop9h 50m

Barcelona-El Prat

Fri 9/25

3:15 pm-5:45 pm

Nonstop8h 30m

$764

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 10/15

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Mon 10/19

3:15 pm-5:45 pm

Nonstop8h 30m

$790
Quickest round-trip

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 8/18

7:25 pm-8:35 am

Nonstop7h 10m

Barcelona-El Prat

Sun 8/23

3:15 pm-5:41 pm

Nonstop8h 26m

$799

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 7/26

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Wed 8/5

3:15 pm-5:41 pm

Nonstop8h 26m

$800

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 8/26

7:25 pm-8:35 am

Nonstop7h 10m

Barcelona-El Prat

Tue 9/1

3:15 pm-5:45 pm

Nonstop8h 30m

$801

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 7/28

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Wed 8/5

3:15 pm-5:41 pm

Nonstop8h 26m

$802

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Boston to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Barcelona

What is the cheapest month to book a flight from Boston to Barcelona?

Currently, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $496). Flying from Boston to Barcelona in June is currently the most expensive (average of $855). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to BCN?

Find hourly flight availability from Boston to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Barcelona as you normally would.

Weekly flight availability from Boston to Barcelona

Explore weekly flight availability from Boston to Barcelona. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 23, 2026.

The most flights from BOS to S37 are scheduled on a Thursday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Boston to Barcelona?

Airfare is below average for this route at the moment.
Boston to Barcelona flights typically cost between $582 and $866 in October.
The cheapest round-trip price found within the last 5 days was $470 on Multiple Airlines (Oct 18-Oct 22).

How often are flights from Boston to Barcelona delayed?

About 12% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 126 minutes.

What is the most punctual flight time for Boston to Barcelona flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to Barcelona flights?

Over the last year, JetBlue have had the lowest number of delays on this route, with just 7% of flights being delayed.

How far ahead should I book a flight from Boston to Barcelona?

The best time to book flights from Boston to Barcelona is 23 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated July 23, 2026.
Read reviews from past customers who have flown Delta,American Airlines, andJetBlue from Boston to Barcelona. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Overall

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Cidalia,Aug 2023

BOS - MIA

I like Delta overall but the delays lately without justification are not leaving a good impression. Both flights were delayed for over 2 hours
Delta
7.8
Good
8,479 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Overall

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Cidalia,Aug 2023

BOS - MIA

I like Delta overall but the delays lately without justification are not leaving a good impression. Both flights were delayed for over 2 hours
American Airlines
7.1
Good
11,834 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Overall

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Cidalia,Aug 2023

BOS - MIA

I like Delta overall but the delays lately without justification are not leaving a good impression. Both flights were delayed for over 2 hours
JetBlue
7.1
Good
3,020 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Overall

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Cidalia,Aug 2023

BOS - MIA

I like Delta overall but the delays lately without justification are not leaving a good impression. Both flights were delayed for over 2 hours
Iberia
7.0
Good
3,258 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Overall

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Cidalia,Aug 2023

BOS - MIA

I like Delta overall but the delays lately without justification are not leaving a good impression. Both flights were delayed for over 2 hours

Related info for your journey

Find useful and relevant information for your journey from Boston to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Barcelona?

    If you book a flight to Barcelona from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 6 flights from Logan Intl to Barcelona per day from 23 different airlines.

  • How long is the flight from Boston to Barcelona?

    Turkish Airlines and Scandinavian Airlines can get you from Boston to Barcelona in just under 30h 55m. Your travel time can differ by up to 3h 10m. There are 3638 mi between Boston and Barcelona. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to Barcelona round-trip?

    LEVEL, at $117, was found to be the cheapest airline from Boston to Barcelona.Alternate airlines to your destination round-trip include Virgin Atlantic and Azores Airlines. LEVEL is priced at 81% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boston to Barcelona one-way?

    The cheapest airline one-way is LEVEL, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from Iberia and LEVEL, as they are both options that can get you from Boston to Barcelona for a low price.

  • What are the most popular routes from Boston to Barcelona?

    The most popular route from Boston to Barcelona is Boston Logan Intl - Barcelona-El Prat. You may also consider Boston Logan Intl - Reus or Boston Logan Intl - Girona Costa Brava.

  • What are the most reliable airlines from Boston to Barcelona?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to Barcelona on time: LEVEL (79%), American Airlines (79%), Qatar Airways (79%).

  • What are the cheapest flights from Boston to Barcelona?

    Looking for the cheapest flight from Boston to Barcelona? While on average our users pay $2,255, our data indicates the cheapest price to be $199. The most popular route (Boston Logan Intl - Barcelona-El Prat), is priced around $515.

  • Where are the most common layover locations when flying from Boston to Barcelona?

    Flights departing from Boston and landing in Barcelona layover in Lisbon most frequently. London follows Lisbon in terms of the most common layover location on Boston to Barcelona flights. Paris ranks third in terms of the most popular layover location on Boston to Barcelona flights.

  • What are some popular things to do or see while on a layover in Lisbon?

    Most Lisbon visitors opt to spend their time experiencing Chiado, Praça do Marquês de Pombal, and Commerce Square. Chiado, Praça do Marquês de Pombal, and Commerce Square can be visited by traveling about 4.5 mi, 3.6 mi, and 4.7 mi respectively from Lisbon Humberto Delgado. Those looking to explore during their layover in Lisbon can rent a car from Lisbon Humberto Delgado for about $22 per day.

  • What are some popular points of interest to see during a layover in London?

    If you're on a layover in London and looking for things to do, consider visiting Hyde Park, Buckingham Palace, or Trafalgar Square. Hyde Park, Buckingham Palace, and Trafalgar Square are located about 12.5 mi, 13.7 mi, and 14.3 mi, respectively from London Heathrow. Travelers can rent a car at London Heathrow for an average daily rate of $36 to make sightseeing during their layover a little easier.

  • What are points of interest worth seeing during a layover in Paris?

    Paris travelers tend to visit Eiffel Tower, Champs-Elysées, and Louvre Museum more than any other attractions. Eiffel Tower, Champs-Elysées, and Louvre Museum can be visited by traveling about 15.8 mi, 14.7 mi, and 14.3 mi respectively from Paris Charles de Gaulle. Those on a layover in Paris in need of a rental car can book one at Paris Charles de Gaulle for about $44.

  • Where are the least popular layover locations for Boston to Barcelona flights?

    The least popular layover on flights from Boston to Barcelona is Reykjavik. Zurich is the second least popular location for layovers on flights from Boston to Barcelona. Madrid comes in third to last in terms of the least popular layover locations on Boston to Barcelona flights.

  • Can I find deals for flights from Boston to Barcelona that include hotel bookings?

    Yes. In addition to deals on Boston to Barcelona flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Barcelona?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Barcelona.

  • Can I find deals for business class flights from Boston to Barcelona?

    Yes. Cheapflights offers flight deals from Boston to Barcelona by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Barcelona?

    Currently, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $496). Flying from Boston to Barcelona in June is currently the most expensive (average of $855). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Boston to Barcelona

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Barcelona-El Prat flights
Boston to Reus flights
Hartford to Barcelona-El Prat flights
Albany to Barcelona-El Prat flights
Worcester to Barcelona-El Prat flights

Top 10 airlines flying from Boston to Barcelona

Discover the top 10 airlines that operate flights from Boston to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$117Average$414FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$298Average$742FlexibilityNo cancel feeOn-time72%
Azores AirlinesCheapest$311Average$832FlexibilityNo cancel feeOn-time74%
TAP AIR PORTUGALCheapest$338Average$525FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$357Average$444FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$398Average$714FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$399Average$517FlexibilityNo cancel feeOn-time67%
CondorCheapest$400Average$636FlexibilityNo cancel feeOn-time76%
FinnairCheapest$407Average$701FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$433Average$752FlexibilityNo cancel feeOn-time71%

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