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$201+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 Tuesday 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 December 4, 2025.

This FlightHub deal was found by Cheapflights users on 12/2. 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.
Tue 12/92:15 pmBOS - BCN
1 stop12h 05mMultiple Airlines
Tue 12/161:35 pmBCN - BOS
1 stop25h 57mMultiple Airlines
Deal found 12/2$415
This FlightHub deal was found by Cheapflights users on 12/2. 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.
Wed 12/35:30 amBOS - BCN
1 stop22h 05mMultiple Airlines
Thu 12/111:35 pmBCN - BOS
1 stop25h 57mMultiple Airlines
Deal found 12/2$424
This Icelandair deal was found by Cheapflights users on 12/3. 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.
Wed 12/317:50 pmBOS - BCN
1 stop11h 25mIcelandair
Fri 11/611:50 amBCN - BOS
1 stop12h 00mIcelandair
Deal found 12/3$426
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Tue 12/22:15 pmBOS - BCN
1 stop12h 05mLufthansa
Tue 12/910:30 amBCN - BOS
1 stop14h 18mLufthansa
Deal found 12/2$429
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/87:07 pmBOS - BCN
1 stop31h 13mUnited Airlines
Wed 12/241:35 pmBCN - BOS
1 stop31h 17mUnited Airlines
Deal found 12/1$434
This Icelandair deal was found by Cheapflights users on 12/3. 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.
Wed 12/317:50 pmBOS - BCN
1 stop11h 25mIcelandair
Tue 11/311:50 amBCN - BOS
1 stop12h 00mIcelandair
Deal found 12/3$440
This FlightHub deal was found by Cheapflights users on 12/2. 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.
Tue 12/22:15 pmBOS - BCN
1 stop12h 05mMultiple Airlines
Tue 12/91:35 pmBCN - BOS
1 stop25h 57mMultiple Airlines
Deal found 12/2$442
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Wed 12/105:30 amBOS - BCN
1 stop22h 05mMultiple Airlines
Mon 12/157:50 pmBCN - BOS
1 stop30h 30mMultiple Airlines
Deal found 12/3$443
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Tue 12/22:15 pmBOS - BCN
1 stop12h 05mMultiple Airlines
Mon 12/88:30 pmBCN - BOS
1 stop23h 35mMultiple Airlines
Deal found 12/2$444
This Booking.com deal was found by Cheapflights users on 12/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:40 pmBOS - BCN
1 stop11h 55mAir Canada
Thu 12/111:35 pmBCN - BOS
1 stop12h 07mAir Canada
Deal found 12/2$450
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Tue 12/910:30 amBOS - BCN
2 stops15h 50mUnited Airlines
Tue 12/161:35 pmBCN - BOS
1 stop25h 57mUnited Airlines
Deal found 12/2$451

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 December 4, 2025.

Round-trip from

$380
(Mytrip)

One-way from

$201
(LEVEL)

Popular in

June

Cheapest in

September

Average price

$696
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. 15% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 4, 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

Sat 1/17

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Sat 1/24

6:10 pm-8:55 pm

Nonstop8h 45m

$400

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 2/2

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Mon 3/16

6:10 pm-9:55 pm

Nonstop8h 45m

$423

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 2/3

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Thu 3/12

6:10 pm-9:55 pm

Nonstop8h 45m

$423

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 2/3

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Mon 3/16

6:10 pm-9:55 pm

Nonstop8h 45m

$423

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 1/11

7:50 pm-1:15 pm

1 stop11h 25m

Barcelona-El Prat

Fri 1/16

11:50 am-5:50 pm

1 stop12h 00m

$430

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 1/31

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Mon 3/16

6:10 pm-9:55 pm

Nonstop8h 45m

$448

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 3/30

10:50 pm-12:15 pm

Nonstop7h 25m

Barcelona-El Prat

Sat 4/11

6:30 pm-9:05 pm

Nonstop8h 35m

$449

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 3/9

9:30 am-8:35 am

2 stops18h 05m

Barcelona-El Prat

Thu 3/19

10:30 am-11:57 pm

1 stop18h 27m

$456

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 1/22

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Mon 1/26

12:30 pm-8:30 pm

1 stop14h 00m

$464

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 3/10

7:05 am-8:20 am

2 stops20h 15m

Barcelona-El Prat

Fri 3/20

6:45 am-9:00 pm

1 stop19h 15m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 24 results
1
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 November 28, 2025.

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 $412). 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 December 4, 2025.

It’s typically best to fly out from Boston to Barcelona in the evening. Doing so could potentially save you 18% 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 Monday 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.

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 126 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?

Monday 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 December 4, 2025.
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
11,047 reviews

Food

6.5

Crew

8.0

Boarding

7.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
American Airlines
7.2
Good
11,047 reviews
American Airlines
7.2
Good
11,047 reviews

Food

6.5

Crew

8.0

Boarding

7.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Vueling
7.1
Good
1,215 reviews
American Airlines
7.2
Good
11,047 reviews

Food

6.5

Crew

8.0

Boarding

7.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Iberia
7.0
Good
3,040 reviews
American Airlines
7.2
Good
11,047 reviews

Food

6.5

Crew

8.0

Boarding

7.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

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 is 1 flight from Logan Intl to Barcelona per day from 23 different airlines.

  • How long is the flight from Boston to Barcelona?

    Iberia and Icelandair can get you from Boston to Barcelona in just under 7h 15m. Your travel time can differ by up to 4h 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?

    JetBlue, at $228, was found to be the cheapest airline from Boston to Barcelona.Alternate airlines to your destination round-trip include Icelandair and LEVEL. JetBlue is priced at 59% 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 $130. 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 - 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: KLM (100%), Air France (100%), Delta (100%).

  • What are the cheapest flights from Boston to Barcelona?

    Looking for the cheapest flight from Boston to Barcelona? While on average our users pay $752, our data indicates the cheapest price to be $184. The most popular route (Boston Logan Intl - Barcelona-El Prat), is priced around $315.

  • 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 $16 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 $29 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 $30.

  • 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 $412). 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

Browse thousands of different options on Cheapflights for your next trip

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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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$308Average$320FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$334Average$515FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$349Average$512FlexibilityNo cancel feeOn-time76%
LEVELCheapest$349Average$538FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$355Average$513FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$394Average$691FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$399Average$560FlexibilityNo cancel feeOn-time67%
SWISSCheapest$409Average$704FlexibilityNo cancel feeOn-time79%
Air FranceCheapest$423Average$711FlexibilityNo cancel feeOn-time77%
ITA AirwaysCheapest$429Average$702FlexibilityNo cancel feeOn-time81%

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