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Cheap flights from Boston to Barcelona from $186

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 10/20. 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

TAP AIR PORTUGAL Logo
11:45 pm - 11:45 pmBOS-BCN
19h 00m1 stop
TAP AIR PORTUGAL Logo
2:35 pm - 8:10 pmBCN-BOS
11h 35m1 stop
$348TAP AIR PORTUGAL
Find Deal
sáb., nov. 1 - jue., nov. 13
TAP AIR PORTUGAL Logo
10:20 pm - 9:50 pmBOS-BCN
17h 30m1 stop
TAP AIR PORTUGAL Logo
10:40 pm - 2:20 pmBCN-BOS
21h 40m1 stop
$369TAP AIR PORTUGAL
Find Deal
dom., oct. 5 - mar., oct. 14
TAP AIR PORTUGAL Logo
10:45 pm - 7:20 pmBOS-BCN
14h 35m1 stop
TAP AIR PORTUGAL Logo
2:35 pm - 9:10 pmBCN-BOS
11h 35m1 stop
$373TAP AIR PORTUGAL
Find Deal
vie., oct. 17 - vie., oct. 31
Scandinavian Airlines Logo
5:35 pm - 1:55 pmBOS-BCN
38h 20m2 stops
Scandinavian Airlines Logo
7:10 pm - 3:50 pmBCN-BOS
26h 40m1 stop
$376Scandinavian Airlines
Find Deal
vie., nov. 14 - jue., nov. 27
Scandinavian Airlines Logo
5:35 pm - 1:55 pmBOS-BCN
38h 20m2 stops
Scandinavian Airlines Logo
2:45 pm - 3:50 pmBCN-BOS
31h 05m2 stops
$378Scandinavian Airlines
Find Deal
vie., nov. 14 - dom., nov. 23
British Airways Logo
9:55 pm - 10:40 pmBOS-BCN
18h 45m1 stop
British Airways Logo
12:50 pm - 10:50 pmBCN-BOS
16h 00m1 stop
$385British Airways
Find Deal
dom., sep. 14 - mar., sep. 16
LEVEL Logo
11:55 pm - 1:10 pmBOS-BCN
7h 15mnonstop
LEVEL Logo
6:30 pm - 9:15 pmBCN-BOS
8h 45mnonstop
$388LEVEL
Find Deal
dom., oct. 5 - vie., oct. 10
LEVEL Logo
11:00 pm - 12:15 pmBOS-BCN
7h 15mnonstop
LEVEL Logo
6:30 pm - 9:15 pmBCN-BOS
8h 45mnonstop
$389LEVEL
Find Deal
lun., oct. 6 - mié., oct. 15
Iberia Logo
11:55 pm - 1:10 pmBOS-BCN
7h 15mnonstop
Iberia Logo
6:30 pm - 9:15 pmBCN-BOS
8h 45mnonstop
$398Iberia
Find Deal
dom., oct. 5 - mar., oct. 14
Iberia Logo
11:55 pm - 1:10 pmBOS-BCN
7h 15mnonstop
Iberia Logo
6:30 pm - 9:15 pmBCN-BOS
8h 45mnonstop
$399Iberia
Find Deal
dom., oct. 5 - mar., oct. 14

TAP AIR PORTUGAL flights from Boston to Barcelona-El Prat Airport

Our best TAP AIR PORTUGAL deals on Boston to Barcelona-El Prat Airport flight tickets
TAP AIR PORTUGAL
Nov 1
BOS11:45 pmBoston Logan Intl
19h 00m
1 stop
BCN11:45 pmBarcelona-El Prat
Nov 13
BCN2:35 pmBarcelona-El Prat
11h 35m
1 stop
BOS8:10 pmBoston Logan Intl
$348
Find similar
TAP AIR PORTUGAL
Oct 5
BOS10:20 pmBoston Logan Intl
17h 30m
1 stop
BCN9:50 pmBarcelona-El Prat
Oct 14
BCN10:40 pmBarcelona-El Prat
21h 40m
1 stop
BOS2:20 pmBoston Logan Intl
$369
Find similar
TAP AIR PORTUGAL
Oct 17
BOS10:45 pmBoston Logan Intl
14h 35m
1 stop
BCN7:20 pmBarcelona-El Prat
Oct 31
BCN2:35 pmBarcelona-El Prat
11h 35m
1 stop
BOS9:10 pmBoston Logan Intl
$373
Find similar

Scandinavian Airlines flights from Boston to Barcelona-El Prat Airport

Our best Scandinavian Airlines deals on Boston to Barcelona-El Prat Airport flight tickets
Scandinavian Airlines
Nov 14
BOS5:35 pmBoston Logan Intl
38h 20m
2 stops
BCN1:55 pmBarcelona-El Prat
Nov 27
BCN7:10 pmBarcelona-El Prat
26h 40m
1 stop
BOS3:50 pmBoston Logan Intl
$376
Find similar
Scandinavian Airlines
Nov 14
BOS5:35 pmBoston Logan Intl
38h 20m
2 stops
BCN1:55 pmBarcelona-El Prat
Nov 23
BCN2:45 pmBarcelona-El Prat
31h 05m
2 stops
BOS3:50 pmBoston Logan Intl
$378
Find similar
Scandinavian Airlines
Oct 14
BOS5:40 pmBoston Logan Intl
33h 55m
1 stop
BCN9:35 amBarcelona-El Prat
Oct 30
BCN10:55 amBarcelona-El Prat
34h 55m
2 stops
BOS4:50 pmBoston Logan Intl
$393
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 agosto 18, 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

sáb. 11/1

11:45 pm-11:45 pm

1 stop19h 00m

Barcelona-El Prat

jue. 11/13

2:35 pm-8:10 pm

1 stop11h 35m

$348

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

dom. 10/5

10:20 pm-9:50 pm

1 stop17h 30m

Barcelona-El Prat

mar. 10/14

10:40 pm-2:20 pm

1 stop21h 40m

$369

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

vie. 10/17

10:45 pm-7:20 pm

1 stop14h 35m

Barcelona-El Prat

vie. 10/31

2:35 pm-9:10 pm

1 stop11h 35m

$373

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

vie. 11/14

5:35 pm-1:55 pm

2 stops38h 20m

Barcelona-El Prat

jue. 11/27

7:10 pm-3:50 pm

1 stop26h 40m

$376

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

vie. 11/14

5:35 pm-1:55 pm

2 stops38h 20m

Barcelona-El Prat

dom. 11/23

2:45 pm-3:50 pm

2 stops31h 05m

$378

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

dom. 9/14

9:55 pm-10:40 pm

1 stop18h 45m

Barcelona-El Prat

mar. 9/16

12:50 pm-10:50 pm

1 stop16h 00m

$385

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

dom. 10/5

11:55 pm-1:10 pm

Nonstop7h 15m

Barcelona-El Prat

vie. 10/10

6:30 pm-9:15 pm

Nonstop8h 45m

$388

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

lun. 10/6

11:00 pm-12:15 pm

Nonstop7h 15m

Barcelona-El Prat

mié. 10/15

6:30 pm-9:15 pm

Nonstop8h 45m

$389

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

dom. 10/5

11:55 pm-1:10 pm

Nonstop7h 15m

Barcelona-El Prat

mar. 10/14

6:30 pm-9:15 pm

Nonstop8h 45m

$398

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

dom. 10/5

11:55 pm-1:10 pm

Nonstop7h 15m

Barcelona-El Prat

mar. 10/14

6:30 pm-9:15 pm

Nonstop8h 45m

$399

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 typical price of a round-trip flight between Boston and Barcelona-El Prat Airport?

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 $484.

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 $550. 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 $678. 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 $599 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 $568 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 $470 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 August 2025, prices for Boston to Barcelona-El Prat Airport flights are approximately 37% 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

$186

Fastest flight time

7h 15m

Direct flights

Every day
The best one-way flight to Barcelona-El Prat Airport from Boston in the past 72 hours is $186. The best round-trip flight deal from Boston to Barcelona-El Prat Airport found on momondo in the last 72 hours is $348.
The fastest flight from Boston to Barcelona-El Prat Airport takes 7h 15m
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
70 reviews
Search Azores Airlines flights
PLAYPriceFrom $308Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom $344Free CancellationRating
7.1
1,954 reviews
Search TAP AIR PORTUGAL flights
FinnairPriceFrom $349Free CancellationRating
7.6
1,320 reviews
Search Finnair flights
LEVELPriceFrom $349Free CancellationRating
0.0
0 reviews
Search LEVEL flights
IcelandairPriceFrom $356Free CancellationRating
7.0
529 reviews
Search Icelandair flights
Air CanadaPriceFrom $405Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights
Aer LingusPriceFrom $423Free CancellationRating
7.2
1,220 reviews
Search Aer Lingus flights
Air FrancePriceFrom $424Free CancellationRating
7.4
1,468 reviews
Search Air France flights
SWISSPriceFrom $424Free CancellationRating
7.6
1,699 reviews
Search SWISS 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 7,981 momondo users rating the airline 8.0/10. The cheapest Delta deal from Boston to Barcelona-El Prat Airport in the last 72 hours was $457 (round-trip), much lower than the average airfare cost of $792 for Delta flights on this route.

  • KLM Flights From Boston to Barcelona-El Prat Airport

    Across 1,385 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 $521 to $829. 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
L'Hospitalet de Llobregat
Tossa de Mar
El Prat de Llobregat
Tarragona
Castelldefels
Santa Susanna
Badalona
Cambrils
Calella
Pineda de Mar
Empuriabrava
Cadaques
Roses
Malgrat de Mar
Palafrugell
Tortosa
Pals

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.

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