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$331+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 72 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 June 12, 2025.

Round-trip from

$415
(Kiwi.com)

One-way from

$331
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$783
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. 16% potential increase in price ($116 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:20 pmBOS - BCN
1 stop10h 40mIberia
Sun 10/127:25 pmBCN - BOS
Nonstop8h 45mIberia
Deal found 6/12$410
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/1111:35 pmBOS - BCN
1 stop33h 10mMultiple Airlines
Wed 8/206:30 pmBCN - BOS
Nonstop8h 45mMultiple Airlines
Deal found 6/11$415
This oojo deal was found by Cheapflights users on 6/12. 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.
Fri 10/176:10 pmBOS - BCN
1 stop21h 40mTAP AIR PORTUGAL
Sat 11/19:10 pmBCN - BOS
1 stop23h 20mTAP AIR PORTUGAL
Deal found 6/12$417
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/295:05 pmBOS - BCN
1 stop20h 05mSWISS
Thu 7/249:40 amBCN - BOS
1 stop11h 45mSWISS
Deal found 6/10$423
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Thu 8/711:00 pmBOS - BCN
Nonstop7h 15mVueling
Mon 8/186:30 pmBCN - BOS
Nonstop8h 45mVueling
Deal found 6/11$425
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:25 pmBOS - BCN
1 stop19h 00mAer Lingus
Tue 11/411:30 amBCN - BOS
1 stop13h 25mAer Lingus
Deal found 6/11$438
This Scandinavian Airlines deal was found by Cheapflights users on 6/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:35 pmBOS - BCN
1 stop18h 45mScandinavian Airlines
Sat 11/157:10 pmBCN - BOS
1 stop26h 40mScandinavian Airlines
Deal found 6/10$440
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 11/105:40 pmBOS - BCN
1 stop9h 55mUnited Airlines
Fri 11/141:35 pmBCN - BOS
2 stops27h 08mUnited Airlines
Deal found 6/11$456
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Sun 12/283:20 pmBOS - BCN
1 stop12h 15mAir Canada
Tue 2/101:35 pmBCN - BOS
1 stop26h 03mAir Canada
Deal found 6/12$469
This Austrian Airlines deal was found by Cheapflights users on 6/9. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/181:30 pmBOS - BCN
2 stops24h 15mAustrian Airlines
Wed 12/38:30 pmBCN - BOS
2 stops26h 20mAustrian Airlines
Deal found 6/9$531
This Icelandair deal was found by Cheapflights users on 6/12. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:35 amBOS - BCN
1 stop19h 35mIcelandair
Fri 2/611:45 amBCN - BOS
1 stop12h 00mIcelandair
Deal found 6/12$558
This Mytrip deal was found by Cheapflights users on 6/11. 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 9/158:50 pmBOS - GRO
3 stops18h 25mMultiple Airlines
Fri 9/1910:45 pmGRO - BOS
2 stops24h 53mMultiple Airlines
Deal found 6/11$700

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 June 12, 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

Mon 8/11

11:35 pm-2:45 pm

1 stop33h 10m

Barcelona-El Prat

Wed 8/20

6:30 pm-9:15 pm

Nonstop8h 45m

$415

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 9/8

9:20 pm-2:00 pm

1 stop10h 40m

Barcelona-El Prat

Mon 9/15

6:30 pm-9:15 pm

Nonstop8h 45m

$416

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 6/29

5:05 pm-7:10 pm

1 stop20h 05m

Barcelona-El Prat

Thu 7/24

9:40 am-3:25 pm

1 stop11h 45m

$423

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 8/7

11:00 pm-12:15 pm

Nonstop7h 15m

Barcelona-El Prat

Mon 8/18

6:30 pm-9:15 pm

Nonstop8h 45m

$425

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 8/29

5:40 pm-8:50 am

1 stop33h 10m

Barcelona-El Prat

Mon 9/1

7:00 pm-3:35 pm

1 stop26h 35m

$449

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 8/2

6:40 pm-7:50 am

1 stop31h 10m

Barcelona-El Prat

Tue 10/14

12:10 pm-2:30 pm

1 stop32h 20m

$469

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 8/16

6:40 pm-7:50 am

1 stop31h 10m

Barcelona-El Prat

Tue 9/2

12:10 pm-5:43 pm

2 stops35h 33m

$511

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 8/5

9:25 pm-10:25 pm

1 stop19h 00m

Barcelona-El Prat

Thu 8/21

11:00 am-6:45 pm

1 stop13h 45m

$512

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 8/21

10:25 pm-1:30 am

1 stop21h 05m

Barcelona-El Prat

Mon 9/1

10:40 pm-8:45 pm

2 stops52h 05m

$518

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 8/3

8:05 pm-8:30 pm

2 stops18h 25m

Barcelona-El Prat

Tue 10/14

9:20 pm-3:55 pm

2 stops24h 35m

$566

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 31 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 June 9, 2025.

The best time to book flights from Boston to Barcelona is 72 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 $1,062). 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 June 12, 2025.

It’s typically best to fly out from Boston to Barcelona in the evening. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, 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.

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 June 12, 2025.

The most flights from BOS to S37 are scheduled on a Thursday (7 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Barcelona by month

Plan your trip to Barcelona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Barcelona ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

Temperature in Barcelona by month

Plan your trip to Barcelona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Boston to Barcelona, such as Delta, Finnair and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Brussels Airlines
7.4
Good
355 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 3 flights from Logan Intl to Barcelona per day from 22 different airlines.

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

    Iberia, at $416, was found to be the cheapest airline from Boston to Barcelona.Alternate airlines to your destination round-trip include SWISS and Vueling. Iberia is priced at 29% 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 $333. However, be on the lookout for offers from TAP AIR PORTUGAL and Scandinavian Airlines, 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 - 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: American Airlines (91%), Vueling (90%), Iberia (90%).

  • What are the cheapest flights from Boston to Barcelona?

    Looking for the cheapest flight from Boston to Barcelona? While on average our users pay $1,529, our data indicates the cheapest price to be $168. The most popular route (Boston Logan Intl - Barcelona-El Prat), is priced around $294.

  • 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 $21 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 $44 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. Munich 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 $1,062). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Azores AirlinesCheapest$265Average$289FlexibilityNo cancel feeOn-time74%
PLAYCheapest$308Average$323FlexibilityNo cancel feeOn-timeN/A
VuelingCheapest$337Average$553FlexibilityNo cancel feeOn-time88%
IcelandairCheapest$356Average$497FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$358Average$582FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$395Average$622FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$405Average$568FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$424Average$733FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$450Average$702FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$454Average$626FlexibilityNo cancel feeOn-time70%

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