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Cheap flights from Boston to Bilbao from $251

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 Bilbao departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
4:45 pm - 12:50 pm
BOS
-
BIO
14h 05m
1 stop
American Airlines Logo
6:45 am - 8:50 pm
BIO
-
BOS
19h 05m
1 stop
$375American Airlines
Sun, Mar 1 - Tue, Mar 17
Finnair Logo
5:40 pm - 11:15 pm
BOS
-
BIO
23h 35m
1 stop
Finnair Logo
6:45 am - 4:10 pm
BIO
-
BOS
15h 25m
1 stop
$396Finnair
Wed, Apr 8 - Wed, Apr 15
Iberia Logo
10:50 pm - 8:15 am
BOS
-
BIO
27h 25m
1 stop
Iberia Logo
3:30 pm - 9:05 pm
BIO
-
BOS
11h 35m
1 stop
$402Iberia
Tue, Apr 7 - Tue, Apr 14
KLM Logo
8:10 pm - 11:20 am
BOS
-
BIO
10h 10m
1 stop
KLM Logo
11:55 am - 2:20 pm
BIO
-
BOS
31h 25m
1 stop
$404KLM
Tue, Mar 10 - Mon, Mar 16
Iberia Logo
10:50 pm - 11:00 pm
BOS
-
BIO
18h 10m
1 stop
Iberia Logo
9:15 am - 4:10 pm
BIO
-
BOS
12h 55m
1 stop
$422Iberia
Mon, Apr 13 - Mon, Apr 20
Finnair Logo
9:20 pm - 11:15 pm
BOS
-
BIO
19h 55m
1 stop
Finnair Logo
6:45 am - 10:48 pm
BIO
-
BOS
21h 03m
2 stops
$430Finnair
Sun, Mar 1 - Tue, Mar 17
Scandinavian Airlines Logo
5:40 pm - 11:35 am
BOS
-
BIO
11h 55m
1 stop
Scandinavian Airlines Logo
7:55 pm - 3:35 pm
BIO
-
BOS
25h 40m
1 stop
$441Scandinavian Airlines
Sun, May 10 - Thu, May 14
Multiple Airlines Logo
1:10 pm - 12:50 pm
BOS
-
BIO
18h 40m
2 stops
Multiple Airlines Logo
1:35 pm - 8:50 pm
BIO
-
BOS
12h 15m
1 stop
$442Multiple Airlines
Tue, Mar 10 - Mon, Mar 16
British Airways Logo
7:55 pm - 8:30 am
BOS
-
BIO
31h 35m
2 stops
British Airways Logo
5:35 pm - 4:15 pm
BIO
-
BOS
27h 40m
1 stop
$446British Airways
Tue, Mar 10 - Mon, Mar 16
TAP AIR PORTUGAL Logo
10:45 pm - 6:00 pm
BOS
-
BIO
13h 15m
1 stop
TAP AIR PORTUGAL Logo
12:25 pm - 8:20 pm
BIO
-
BOS
13h 55m
1 stop
$447TAP AIR PORTUGAL
Mon, Mar 30 - Mon, Apr 6

American Airlines flights from Boston to Bilbao

Our best American Airlines deals on Boston to Bilbao flight tickets
American Airlines
Mar 1
BOS4:45 pmBoston Logan Intl
14h 05m
1 stop
BIO12:50 pmBilbao
Mar 17
BIO6:45 amBilbao
19h 05m
1 stop
BOS8:50 pmBoston Logan Intl
$375
American Airlines
Mar 10
BOS3:49 pmBoston Logan Intl
16h 01m
2 stops
BIO12:50 pmBilbao
Mar 16
BIO6:45 amBilbao
19h 05m
1 stop
BOS8:50 pmBoston Logan Intl
$430
American Airlines
Apr 24
BOS3:17 pmBoston Logan Intl
15h 28m
2 stops
BIO12:45 pmBilbao
May 15
BIO9:15 amBilbao
16h 35m
1 stop
BOS7:50 pmBoston Logan Intl
$455

KLM flights from Boston to Bilbao

Our best KLM deals on Boston to Bilbao flight tickets
KLM
Mar 10
BOS8:10 pmBoston Logan Intl
10h 10m
1 stop
BIO11:20 amBilbao
Mar 16
BIO11:55 amBilbao
31h 25m
1 stop
BOS2:20 pmBoston Logan Intl
$404
KLM
Aug 15
BOS5:25 pmBoston Logan Intl
12h 30m
1 stop
BIO11:55 amBilbao
Sep 1
BIO8:20 amBilbao
14h 15m
1 stop
BOS4:35 pmBoston Logan Intl
$450
KLM
Mar 10
BOS8:10 pmBoston Logan Intl
10h 10m
1 stop
BIO11:20 amBilbao
Mar 16
BIO11:55 amBilbao
31h 25m
1 stop
BOS2:20 pmBoston Logan Intl
$479

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Bilbao 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 February 16, 2026.
Use the filters below to find and compare flights from Boston to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 3/1

4:45 pm-12:50 pm

1 stop14h 05m

Bilbao

Tue 3/17

6:45 am-8:50 pm

1 stop19h 05m

$375

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 4/8

5:40 pm-11:15 pm

1 stop23h 35m

Bilbao

Wed 4/15

6:45 am-4:10 pm

1 stop15h 25m

$396

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 4/7

10:50 pm-8:15 am

1 stop27h 25m

Bilbao

Tue 4/14

3:30 pm-9:05 pm

1 stop11h 35m

$402

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 3/10

8:10 pm-11:20 am

1 stop10h 10m

Bilbao

Mon 3/16

11:55 am-2:20 pm

1 stop31h 25m

$404

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/13

10:50 pm-11:00 pm

1 stop18h 10m

Bilbao

Mon 4/20

9:15 am-4:10 pm

1 stop12h 55m

$422

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 3/1

9:20 pm-11:15 pm

1 stop19h 55m

Bilbao

Tue 3/17

6:45 am-10:48 pm

2 stops21h 03m

$430

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 5/10

5:40 pm-11:35 am

1 stop11h 55m

Bilbao

Thu 5/14

7:55 pm-3:35 pm

1 stop25h 40m

$441

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 3/10

1:10 pm-12:50 pm

2 stops18h 40m

Bilbao

Mon 3/16

1:35 pm-8:50 pm

1 stop12h 15m

$442

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 3/10

7:55 pm-8:30 am

2 stops31h 35m

Bilbao

Mon 3/16

5:35 pm-4:15 pm

1 stop27h 40m

$446

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 3/30

10:45 pm-6:00 pm

1 stop13h 15m

Bilbao

Mon 4/6

12:25 pm-8:20 pm

1 stop13h 55m

$447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bilbao from

How to get the cheapest flight ticket from Boston to Bilbao

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 Bilbao?

The cheapest month to fly to Bilbao from Boston is in October. Flight prices, which tend to average around $483, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in October, then March is your next best option. Flight prices from Boston to Bilbao during March average around $511.

How far in advance should I book a flight to Bilbao?

You are more likely to see cheaper flights to Bilbao from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Bilbao for around $633 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bilbao from Boston for as low as $524 on momondo.

How have Boston to Bilbao flight prices changed over time?

When to book flights from Boston to Bilbao

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

Cheap Boston to Bilbao (BOS to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Bilbao

Fastest flight time

9h 45m

Direct flights

None
The fastest flight from Boston to Bilbao takes 9h 45m
There are no direct flights from Boston to Bilbao. There are no popular flight routes from Boston to Bilbao.
Search flight deals

  • How far is Boston Logan Intl to Bilbao by plane?

    The straight-line distance from Boston Logan Intl to Bilbao is 3350.6 mi. In terms of flight time, this usually takes a little over 9h 45m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Bilbao Airport?

    Prices for flights from Boston Logan Intl Airport to Bilbao Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Bilbao Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Bilbao 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 Bilbao Airport.

  • What documentation or ID do you need to fly to Bilbao Airport?

    The travel and health documents required for your trip to Bilbao Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bilbao Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Bilbao?

Best airlines flying from Boston to Bilbao

Compare and see reviews for airlines that fly from Boston to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $381Free CancellationRating
7.0
3,116 reviews
Search Iberia flights
United AirlinesPriceFrom $393Free CancellationRating
7.4
9,308 reviews
Search United Airlines flights
LufthansaPriceFrom $417Free CancellationRating
6.8
7,786 reviews
Search Lufthansa flights
DeltaPriceFrom $424Free CancellationRating
7.9
8,206 reviews
Search Delta flights
American AirlinesPriceFrom $439Free CancellationRating
7.2
11,294 reviews
Search American Airlines flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,143 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $469Free CancellationRating
7.7
1,455 reviews
Search KLM flights
LEVELPriceFrom $523Free CancellationRating
0.0
Search LEVEL flights

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

Why use momondo?

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

Finding the right flight to Bilbao from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bilbao quick and easy, saving you time and money.

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

Yes. All flights to Bilbao from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bilbao from Boston.

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

If you are not ready to book a flight from Boston to Bilbao now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bilbao and let you know when they change.

An easier way to manage your Bilbao trip

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