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$194+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
okt. 15 — okt. 221
on. 10/15
on. 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Barcelona are usually found in January or March, booked 55 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap 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 september 15, 2025.

Round-trip from

$368
(Mytrip)

One-way from

$194
(eDestinos)

Popular in

June

Cheapest in

January

Average price

$485
From Boston Logan Intl to Barcelona
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One-way flight from Boston Logan Intl to Barcelona
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Highest demand for flights based on searches. 17% potential increase in price ($117 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 september 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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.
ma. 10/2010:40 amBOS - BCN
2 stops15h 10mAir Canada
fr. 10/3112:35 pmBCN - BOS
2 stops26h 22mAir Canada
Deal found 9/14$368
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
on. 10/15:10 pmBOS - BCN
1 stop20h 40mMultiple Airlines
on. 10/812:50 pmBCN - BOS
1 stop13h 20mMultiple Airlines
Deal found 9/13$370
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 9/239:30 amBOS - BCN
2 stops16h 20mUnited Airlines
ti. 9/3011:15 amBCN - BOS
1 stop18h 44mUnited Airlines
Deal found 9/14$371
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma. 10/134:30 pmBOS - BCN
1 stop13h 15mAmerican Airlines
on. 10/226:30 pmBCN - BOS
Nonstop8h 45mAmerican Airlines
Deal found 9/14$372
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma. 11/243:40 pmBOS - BCN
1 stop11h 55mMultiple Airlines
ma. 12/17:50 pmBCN - BOS
1 stop30h 30mMultiple Airlines
Deal found 9/14$373
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma. 10/136:00 amBOS - BCN
1 stop19h 50mUnited Airlines
on. 10/226:00 amBCN - BOS
1 stop19h 55mUnited Airlines
Deal found 9/14$374
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 9/3010:34 amBOS - BCN
2 stops15h 16mUnited Airlines
to. 10/912:00 pmBCN - BOS
2 stops17h 59mUnited Airlines
Deal found 9/13$375
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 11/86:05 pmBOS - BCN
1 stop13h 40mTAP AIR PORTUGAL
lø. 11/2212:35 pmBCN - BOS
1 stop13h 35mTAP AIR PORTUGAL
Deal found 9/12$376
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sø. 9/283:15 pmBOS - BCN
1 stop10h 35mUnited Airlines
fr. 10/107:50 amBCN - BOS
1 stop15h 50mUnited Airlines
Deal found 9/13$377
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 9/3012:10 pmBOS - BCN
2 stops13h 40mUnited Airlines
on. 10/86:00 amBCN - BOS
1 stop15h 25mUnited Airlines
Deal found 9/13$378
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
on. 10/88:05 pmBOS - BCN
1 stop10h 40mUnited Airlines
fr. 10/2412:10 pmBCN - BOS
1 stop15h 16mUnited Airlines
Deal found 9/12$379
This Air Canada deal was found by Cheapflights users on 9/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 10/116:45 pmBOS - BCN
1 stop32h 35mAir Canada
ti. 10/216:00 amBCN - BOS
2 stops17h 55mAir Canada
Deal found 9/12$380

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 september 15, 2025.
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

ma. 11/3

10:10 am-9:35 am

2 stops17h 25m

Barcelona-El Prat

to. 11/13

11:00 am-6:32 pm

1 stop13h 32m

$371

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

sø. 10/5

6:00 am-7:50 am

2 stops19h 50m

Barcelona-El Prat

to. 10/16

6:00 am-3:25 pm

1 stop15h 25m

$378

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

sø. 9/21

5:30 am-7:50 am

2 stops20h 20m

Barcelona-El Prat

ma. 9/29

1:30 pm-5:40 pm

1 stop34h 10m

$391

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

ma. 10/13

11:00 pm-12:15 pm

Nonstop7h 15m

Barcelona-El Prat

fr. 10/24

6:30 pm-9:15 pm

Nonstop8h 45m

$394

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

sø. 10/5

6:00 am-7:50 am

1 stop19h 50m

Barcelona-El Prat

ti. 10/14

7:50 am-3:25 pm

2 stops13h 35m

$395

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

ma. 10/13

11:00 pm-12:15 pm

Nonstop7h 15m

Barcelona-El Prat

ma. 10/20

6:30 pm-9:15 pm

Nonstop8h 45m

$407

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

fr. 11/7

5:10 pm-10:50 am

1 stop11h 40m

Barcelona-El Prat

ma. 11/10

11:30 am-6:55 pm

1 stop13h 25m

$413

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

ma. 10/13

7:40 pm-5:40 pm

1 stop16h 00m

Barcelona-El Prat

on. 10/22

10:35 am-5:10 pm

1 stop12h 35m

$419

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

ma. 10/20

11:00 pm-12:15 pm

Nonstop7h 15m

Barcelona-El Prat

fr. 10/31

6:40 am-3:20 pm

1 stop13h 40m

$419

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

lø. 9/27

6:15 pm-1:15 pm

1 stop13h 00m

Barcelona-El Prat

on. 10/8

6:00 am-3:25 pm

1 stop15h 25m

$428

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 24 results
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2
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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 September 12, 2025.

The best time to book flights from Boston to Barcelona is 55 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, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $523). Flying from Boston to Barcelona in June is currently the most expensive (average of $1,059). 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 september 15, 2025.

It’s typically best to fly out from Boston to Barcelona in the evening. Doing so could potentially save you 29% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Boston to Barcelona?

Use this chart to determine the cheapest time to fly round-trip from Boston to Barcelona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Barcelona flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 september 15, 2025.
Read reviews from past customers who have flown American Airlines, Vueling, and TAP AIR PORTUGAL 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
10,000 reviews

Overall

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Vueling
7.1
Good
1,185 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
TAP AIR PORTUGAL
7.1
Good
1,977 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Iberia
7.0
Good
2,928 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

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

  • How long is the flight from Boston to Barcelona?

    United Airlines and Iberia can get you from Boston to Barcelona in just under 7h 15m. Your travel time can differ by up to 10h 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?

    Azores Airlines, at $243, was found to be the cheapest airline from Boston to Barcelona.Alternate airlines to your destination round-trip include LEVEL and PLAY. Azores Airlines is priced at 56% lower than the current average price of a flight leaving 3 months from now.

  • 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 - Girona Costa Brava or Boston Logan Intl - Reus.

  • 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: Finnair (100%), Vueling (92%), Iberia (81%).

  • What are the cheapest flights from Boston to Barcelona?

    Looking for the cheapest flight from Boston to Barcelona? While on average our users pay $725, our data indicates the cheapest price to be $201. The most popular route (Boston Logan Intl - Barcelona-El Prat), is priced around $330.

  • 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 $20 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 $41 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 $26.

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

    The least popular layover on flights from Boston to Barcelona is Montreal. New York is the second least popular location for layovers on flights from Boston to Barcelona. Paris 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 $523). Flying from Boston to Barcelona in June is currently the most expensive (average of $1,059). 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 september 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Azores AirlinesCheapest$243Average$323FlexibilityNo cancel feeOn-time74%
PLAYCheapest$309Average$320FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$337Average$549FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$349Average$529FlexibilityNo cancel feeOn-time76%
LEVELCheapest$351Average$513FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$356Average$495FlexibilityNo cancel feeOn-time76%
SWISSCheapest$402Average$661FlexibilityNo cancel feeOn-time79%
Air CanadaCheapest$405Average$584FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$421Average$706FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$423Average$718FlexibilityNo cancel feeOn-time77%

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