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Cheap flights from Boston to Barcelona from $195

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Barcelona departing on 9/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Air Canada Logo
10:40 am - 7:50 amBOS-BCN
15h 10m2 stops
Air Canada Logo
12:10 pm - 10:39 pmBCN-BOS
16h 29m2 stops
$369Air Canada
Find Deal
Tue, Sep 30 - Wed, Oct 8
American Airlines Logo
4:35 pm - 12:45 pmBOS-BCN
14h 10m1 stop
American Airlines Logo
6:30 pm - 9:15 pmBCN-BOS
8h 45mnonstop
$371American Airlines
Find Deal
Sun, Oct 5 - Thu, Oct 16
United Airlines Logo
12:03 pm - 8:20 amBOS-BCN
14h 17m2 stops
United Airlines Logo
10:30 am - 9:33 pmBCN-BOS
17h 03m2 stops
$375United Airlines
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Tue, Dec 2 - Tue, Dec 9
TAP AIR PORTUGAL Logo
6:05 pm - 10:05 amBOS-BCN
10h 00m1 stop
TAP AIR PORTUGAL Logo
2:35 pm - 8:10 pmBCN-BOS
11h 35m1 stop
$376TAP AIR PORTUGAL
Find Deal
Sat, Nov 8 - Sat, Nov 22
TAP AIR PORTUGAL Logo
6:05 pm - 10:05 amBOS-BCN
10h 00m1 stop
TAP AIR PORTUGAL Logo
2:35 pm - 8:10 pmBCN-BOS
11h 35m1 stop
$377TAP AIR PORTUGAL
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Tue, Dec 2 - Sun, Dec 7
Iberia Logo
10:20 pm - 12:40 pmBOS-BCN
9h 20m1 stop
Iberia Logo
6:10 pm - 8:55 pmBCN-BOS
8h 45mnonstop
$382Iberia
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Mon, Oct 27 - Tue, Nov 4
United Airlines Logo
9:30 am - 9:20 amBOS-BCN
17h 50m2 stops
United Airlines Logo
6:00 am - 3:25 pmBCN-BOS
15h 25m1 stop
$384United Airlines
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Wed, Oct 1 - Thu, Oct 9
Aer Lingus Logo
5:10 pm - 10:50 amBOS-BCN
11h 40m1 stop
Aer Lingus Logo
11:30 am - 6:55 pmBCN-BOS
13h 25m1 stop
$390Aer Lingus
Find Deal
Fri, Nov 7 - Tue, Nov 11
Aer Lingus Logo
5:10 pm - 10:50 amBOS-BCN
11h 40m1 stop
Aer Lingus Logo
11:30 am - 6:55 pmBCN-BOS
13h 25m1 stop
$392Aer Lingus
Find Deal
Tue, Nov 18 - Sun, Nov 23
Iberia Logo
10:40 pm - 11:55 amBOS-BCN
7h 15mnonstop
Iberia Logo
6:10 pm - 8:55 pmBCN-BOS
8h 45mnonstop
$394Iberia
Find Deal
Sun, Jan 4 - Sat, Jan 24

Air Canada flights from Boston to Barcelona-El Prat Airport

Our best Air Canada deals on Boston to Barcelona-El Prat Airport flight tickets
Air Canada
Sep 30
BOS10:40 amBoston Logan Intl
15h 10m
2 stops
BCN7:50 amBarcelona-El Prat
Oct 8
BCN12:10 pmBarcelona-El Prat
16h 29m
2 stops
BOS10:39 pmBoston Logan Intl
$369
Find similar
Air Canada
Nov 25
BOS6:40 pmBoston Logan Intl
32h 55m
1 stop
BCN9:35 amBarcelona-El Prat
Dec 10
BCN9:55 amBarcelona-El Prat
15h 47m
2 stops
BOS7:42 pmBoston Logan Intl
$373
Find similar
Air Canada
Oct 13
BOS12:15 pmBoston Logan Intl
15h 05m
1 stop
BCN9:20 amBarcelona-El Prat
Oct 22
BCN9:40 amBarcelona-El Prat
14h 15m
2 stops
BOS5:55 pmBoston Logan Intl
$374
Find similar

American Airlines flights from Boston to Barcelona-El Prat Airport

Our best American Airlines deals on Boston to Barcelona-El Prat Airport flight tickets
American Airlines
Oct 5
BOS4:35 pmBoston Logan Intl
14h 10m
1 stop
BCN12:45 pmBarcelona-El Prat
Oct 16
BCN6:30 pmBarcelona-El Prat
8h 45m
BOS9:15 pmBoston Logan Intl
$371
Find similar
American Airlines
Oct 13
BOS4:30 pmBoston Logan Intl
10h 30m
1 stop
BCN9:00 amBarcelona-El Prat
Oct 22
BCN6:30 pmBarcelona-El Prat
8h 45m
BOS9:15 pmBoston Logan Intl
$372
Find similar
American Airlines
Oct 14
BOS11:00 pmBoston Logan Intl
7h 15m
BCN12:15 pmBarcelona-El Prat
Oct 31
BCN6:40 amBarcelona-El Prat
15h 25m
1 stop
BOS5:05 pmBoston Logan Intl
$396
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Barcelona-El Prat Airport 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Boston to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 9/30

10:40 am-7:50 am

2 stops15h 10m

Barcelona-El Prat

Wed 10/8

12:10 pm-10:39 pm

2 stops16h 29m

$369

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 10/5

4:35 pm-12:45 pm

1 stop14h 10m

Barcelona-El Prat

Thu 10/16

6:30 pm-9:15 pm

Nonstop8h 45m

$371

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 12/2

12:03 pm-8:20 am

2 stops14h 17m

Barcelona-El Prat

Tue 12/9

10:30 am-9:33 pm

2 stops17h 03m

$375

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 11/8

6:05 pm-10:05 am

1 stop10h 00m

Barcelona-El Prat

Sat 11/22

2:35 pm-8:10 pm

1 stop11h 35m

$376

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 12/2

6:05 pm-10:05 am

1 stop10h 00m

Barcelona-El Prat

Sun 12/7

2:35 pm-8:10 pm

1 stop11h 35m

$377

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 10/27

10:20 pm-12:40 pm

1 stop9h 20m

Barcelona-El Prat

Tue 11/4

6:10 pm-8:55 pm

Nonstop8h 45m

$382

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 10/1

9:30 am-9:20 am

2 stops17h 50m

Barcelona-El Prat

Thu 10/9

6:00 am-3:25 pm

1 stop15h 25m

$384

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 11/7

5:10 pm-10:50 am

1 stop11h 40m

Barcelona-El Prat

Tue 11/11

11:30 am-6:55 pm

1 stop13h 25m

$390

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 11/18

5:10 pm-10:50 am

1 stop11h 40m

Barcelona-El Prat

Sun 11/23

11:30 am-6:55 pm

1 stop13h 25m

$392

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 1/4

10:40 pm-11:55 am

Nonstop7h 15m

Barcelona-El Prat

Sat 1/24

6:10 pm-8:55 pm

Nonstop8h 45m

$394

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Boston to Barcelona-El Prat Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Boston is in January. Flight prices, which tend to average around $475, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from Boston during March instead. Flights to Barcelona-El Prat Airport in March, while not as cheap as those in January, still average around $478.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Tuesday when prices can be found for as low as $548. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $675. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $594 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $830 on average. Flights to Barcelona-El Prat Airport from Boston at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Boston Logan Intl to Barcelona-El Prat flight route?

Fly from Boston Logan Intl to Barcelona-El Prat for the best Boston Logan Intl - Barcelona-El Prat flight prices

How far in advance should I book a flight to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $562 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from Boston for as low as $471 on momondo.

What cabin class options are available on Boston Logan Intl to Barcelona-El Prat flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to Barcelona-El Prat flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to Barcelona-El Prat Airport flight prices changed over time?

As of September 2025, prices for Boston to Barcelona-El Prat Airport flights are approximately 45% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Barcelona-El Prat Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Barcelona-El Prat Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Barcelona-El Prat Airport (BOS to BCN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Barcelona-El Prat Airport

Best Price Found

$237

Fastest flight time

7h 10m

Direct flights

Every day
The best one-way flight to Barcelona-El Prat Airport from Boston in the past 72 hours is $237. The best round-trip flight deal from Boston to Barcelona-El Prat Airport found on momondo in the last 72 hours is $426.
The fastest flight from Boston to Barcelona-El Prat Airport takes 7h 10m
Direct flights go from Boston to Barcelona-El Prat Airport every day.
Search flight deals

  • How far is Boston Logan Intl to Barcelona-El Prat by plane?

    There are 3640.3 mi between Boston Logan Intl and Barcelona-El Prat. Typically, this will take 7h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Barcelona-El Prat Airport?

    Prices for flights from Boston Logan Intl Airport to Barcelona-El Prat Airport refresh daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Barcelona-El Prat Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The necessary travel and health documents for your Barcelona-El Prat Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Barcelona-El Prat Airport?

  • What is the most popular airline from Boston to Barcelona-El Prat Airport?

Best airlines flying from Boston to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Boston to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
Azores AirlinesPriceFrom $243Free CancellationRating
7.5
73 reviews
Search Azores Airlines flights
PLAYPriceFrom $309Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom $337Free CancellationRating
7.1
1,977 reviews
Search TAP AIR PORTUGAL flights
FinnairPriceFrom $349Free CancellationRating
7.6
1,324 reviews
Search Finnair flights
LEVELPriceFrom $351Free CancellationRating
0.0
0 reviews
Search LEVEL flights
IcelandairPriceFrom $356Free CancellationRating
7.0
545 reviews
Search Icelandair flights
SWISSPriceFrom $402Free CancellationRating
7.6
1,737 reviews
Search SWISS flights
Air CanadaPriceFrom $405Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Aer LingusPriceFrom $421Free CancellationRating
7.2
1,277 reviews
Search Aer Lingus flights
Air FrancePriceFrom $423Free CancellationRating
7.4
1,468 reviews
Search Air France flights

  • Delta Flights From Boston to Barcelona-El Prat Airport

    Delta flies from Boston to Barcelona-El Prat Airport around 3 times per week, with 7,961 momondo users rating the airline 7.9/10. The cheapest Delta deal from Boston to Barcelona-El Prat Airport in the last 72 hours was $445 (round-trip), much lower than the average airfare cost of $793 for Delta flights on this route.

  • KLM Flights From Boston to Barcelona-El Prat Airport

    Across 1,386 KLM reviews on momondo, the average score is 7.8/10. KLM flies from Boston to Barcelona-El Prat Airport about 3 times each week, with ticket deals ranging from $508 to $823. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
Tarragona
El Prat de Llobregat
L'Hospitalet de Llobregat
Castelldefels
Santa Susanna
Calella
Cambrils
Cadaques
Empuriabrava
Pineda de Mar
Badalona
Roses
Pals
Malgrat de Mar
Palafrugell
Tortosa

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Barcelona?

It is quick and easy to find Boston to Barcelona flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Barcelona that suits you.

Can I find flights from Boston to Barcelona with flexible booking policies on momondo?

Flights from Boston to Barcelona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to Barcelona?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Barcelona.

I’m not ready to book a flight from Boston to Barcelona right now. Can momondo alert me if prices change?

Price alerts on flights to Barcelona from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Barcelona-El Prat Airport trip

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