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$236+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Barcelona are usually found in September or October, booked 56 days in advance, depart on a Monday or Sunday 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 February 19, 2026.

This Mytrip deal was found by Cheapflights users on 2/17. 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 4/98:50 pm
BOS
-
BCN
2 stops22h 25m
Multiple Airlines
Wed 4/155:50 am
BCN
-
BOS
2 stops21h 55m
Multiple Airlines
Deal found 2/17$397
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 4/2410:50 pm
BOS
-
BCN
Nonstop7h 20m
LEVEL
Wed 4/296:30 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 2/17$398
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 4/2310:50 pm
BOS
-
BCN
Nonstop7h 20m
LEVEL
Wed 4/296:30 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 2/18$399
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Mon 4/2010:50 pm
BOS
-
BCN
Nonstop7h 20m
LEVEL
Wed 4/226:30 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 2/15$400
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
Mon 4/1310:50 pm
BOS
-
BCN
Nonstop7h 20m
LEVEL
Wed 4/296:30 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 2/16$401
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Mon 3/2311:40 pm
BOS
-
BCN
Nonstop7h 15m
LEVEL
Tue 3/316:30 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 2/15$402
This Mytrip deal was found by Cheapflights users on 2/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:45 pm
BOS
-
BCN
1 stop11h 15m
Condor
Mon 5/188:00 am
BCN
-
BOS
1 stop12h 45m
Condor
Deal found 2/18$405
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 5/37:50 pm
BOS
-
BCN
1 stop12h 55m
Icelandair
Wed 5/133:45 pm
BCN
-
BOS
1 stop12h 00m
Icelandair
Deal found 2/16$406
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
Mon 2/2310:40 pm
BOS
-
BCN
Nonstop7h 15m
Iberia
Thu 2/266:10 pm
BCN
-
BOS
Nonstop8h 45m
Iberia
Deal found 2/18$407
This Mytrip deal was found by Cheapflights users on 2/17. 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.
Sun 4/268:50 pm
BOS
-
BCN
2 stops22h 05m
Multiple Airlines
Wed 5/65:50 am
BCN
-
BOS
2 stops21h 55m
Multiple Airlines
Deal found 2/17$408
This Iberia deal was found by Cheapflights users on 2/18. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:50 pm
BOS
-
BCN
Nonstop7h 20m
Iberia
Fri 5/16:30 pm
BCN
-
BOS
Nonstop8h 35m
Iberia
Deal found 2/18$412
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/2510:50 pm
BOS
-
BCN
Nonstop7h 20m
LEVEL
Fri 5/86:30 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 2/16$417

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 February 19, 2026.

Round-trip from

$397
(Mytrip)

One-way from

$236
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$510
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. 14% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 19, 2026.
Use the filters below to find and compare flights from Boston to Barcelona that are best for you.

Fly from

Boston

Fly to

Barcelona

Route

Depart

Return

Price

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 5/7

5:40 pm-11:00 am

2 stops35h 20m

Barcelona-El Prat

Sun 5/17

9:45 am-3:35 pm

1 stop11h 50m

$461

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 4/15

10:40 am-8:00 am

1 stop15h 20m

Barcelona-El Prat

Tue 4/21

12:15 pm-9:27 pm

1 stop15h 12m

$479

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 4/15

7:05 am-8:00 am

2 stops18h 55m

Barcelona-El Prat

Thu 4/30

12:15 pm-5:57 pm

1 stop11h 42m

$483

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 4/20

12:30 pm-1:15 pm

1 stop18h 45m

Barcelona-El Prat

Tue 4/28

11:15 am-9:54 pm

2 stops16h 39m

$491

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 3/23

2:40 pm-8:00 am

1 stop12h 20m

Barcelona-El Prat

Wed 4/1

6:30 pm-9:05 pm

Nonstop8h 35m

$519

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 3/23

2:40 pm-8:00 am

1 stop12h 20m

Barcelona-El Prat

Tue 3/31

6:30 pm-9:05 pm

Nonstop8h 35m

$519

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 4/17

5:30 am-8:00 am

1 stop20h 30m

Barcelona-El Prat

Tue 4/21

12:15 pm-9:27 pm

1 stop15h 12m

$529

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 4/22

7:35 pm-12:05 pm

1 stop10h 30m

Barcelona-El Prat

Tue 4/28

10:15 am-4:55 pm

1 stop12h 40m

$533

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 3/17

10:35 pm-4:05 pm

1 stop12h 30m

Barcelona-El Prat

Thu 3/26

3:35 pm-10:55 pm

1 stop12h 20m

$533

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 3/19

10:35 pm-4:10 pm

1 stop12h 35m

Barcelona-El Prat

Wed 3/25

2:35 pm-8:45 pm

1 stop11h 10m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 23 results
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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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Barcelona. Price data was last updated on February 18, 2026.

The best time to book flights from Boston to Barcelona is 56 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.

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

Currently, September is the cheapest month in which you can book a flight from Boston to Barcelona (average of $275). Flying from Boston to Barcelona in June is currently the most expensive (average of $415). 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 February 19, 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.

How often are flights from Boston to Barcelona delayed?

About 10% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 130 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

Tuesday tends to have the lowest number of delays on this route, whereas Saturday 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, LEVEL have had the lowest number of delays on this route, with just 9% of flights being delayed.

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 February 19, 2026.
Read reviews from past customers who have flown American Airlines, Vueling, and Iberia 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.
American Airlines
7.2
Good
11,309 reviews

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Food

6.4

Crew

8.0

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,309 reviews
American Airlines
7.2
Good
11,309 reviews

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Food

6.4

Crew

8.0

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
Vueling
7.2
Good
1,244 reviews
American Airlines
7.2
Good
11,309 reviews

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Food

6.4

Crew

8.0

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
Iberia
7.0
Good
3,117 reviews
American Airlines
7.2
Good
11,309 reviews

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Food

6.4

Crew

8.0

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 0 flights from Logan Intl to Barcelona per day from 23 different airlines.

  • How long is the flight from Boston to Barcelona?

    Scandinavian Airlines and United Airlines can get you from Boston to Barcelona in just under 15h 20m. Your travel time can differ by up to 20h. 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?

    Condor, at $180, was found to be the cheapest airline from Boston to Barcelona.Alternate airlines to your destination round-trip include Icelandair and LEVEL. Condor is priced at 68% 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 Vueling, with whom users have recently found tickets for as low as $129. However, be on the lookout for offers from LEVEL and Iberia, 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 (77%), Qatar Airways (77%).

  • What are the cheapest flights from Boston to Barcelona?

    Looking for the cheapest flight from Boston to Barcelona? While on average our users pay $749, our data indicates the cheapest price to be $196. The most popular route (Boston Logan Intl - Barcelona-El Prat), is priced around $360.

  • 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. Madrid 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 Londres. Chiado, Praça do Marquês de Pombal, and Londres can be visited by traveling about 4.5 mi, 3.6 mi, and 2.3 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 $18 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 Piccadilly Circus. Hyde Park, Buckingham Palace, and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Travelers can rent a car at London Heathrow for an average daily rate of $33 to make sightseeing during their layover a little easier.

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

    Madrid travelers tend to visit Puerta del Sol, Plaza Mayor, and Spain Building more than any other attractions. Puerta del Sol, Plaza Mayor, and Spain Building can be visited by traveling about 8.4 mi, 8.6 mi, and 8.5 mi respectively from Madrid Barajas. Those on a layover in Madrid in need of a rental car can book one at Madrid Barajas for about $23.

  • 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. Montreal 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, September is the cheapest month in which you can book a flight from Boston to Barcelona (average of $275). Flying from Boston to Barcelona in June is currently the most expensive (average of $415). 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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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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
CondorCheapest$180Average$590FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$272Average$447FlexibilityNo cancel feeOn-time76%
PLAYCheapest$314Average$368FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$334Average$458FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$349Average$516FlexibilityNo cancel feeOn-time76%
SWISSCheapest$393Average$715FlexibilityNo cancel feeOn-time79%
VuelingCheapest$394Average$533FlexibilityNo cancel feeOn-time88%
Air CanadaCheapest$399Average$517FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$424Average$709FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$434Average$752FlexibilityNo cancel feeOn-timeN/A

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