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Cheap flights from Boston to Bilbao from $235

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 5/10. 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.
Lufthansa Logo
8:40 pm - 11:05 pm
BOS
-
BIO
20h 25m
1 stop
Lufthansa Logo
6:50 pm - 6:35 pm
BIO
-
BOS
29h 45m
1 stop
$356Lufthansa
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
8:05 pm - 11:25 pm
BOS
-
BIO
21h 20m
1 stop
Multiple Airlines Logo
7:15 am - 10:38 pm
BIO
-
BOS
21h 23m
2 stops
$368Multiple Airlines
Mon, Apr 20 - Tue, Apr 28
Multiple Airlines Logo
8:40 pm - 11:05 pm
BOS
-
BIO
20h 25m
1 stop
Multiple Airlines Logo
5:35 pm - 2:05 pm
BIO
-
BOS
26h 30m
2 stops
$370Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
8:05 pm - 11:25 pm
BOS
-
BIO
21h 20m
1 stop
Multiple Airlines Logo
7:15 am - 10:38 pm
BIO
-
BOS
21h 23m
2 stops
$374Multiple Airlines
Mon, Apr 20 - Tue, Apr 28
Multiple Airlines Logo
8:05 pm - 11:25 pm
BOS
-
BIO
21h 20m
1 stop
Multiple Airlines Logo
9:00 pm - 3:10 pm
BIO
-
BOS
24h 10m
1 stop
$376Multiple Airlines
Mon, Apr 20 - Tue, Apr 28
Iberia Logo
10:50 pm - 4:25 pm
BOS
-
BIO
11h 35m
1 stop
Iberia Logo
10:50 pm - 9:05 pm
BIO
-
BOS
28h 15m
1 stop
$378Iberia
Mon, Apr 20 - Tue, Apr 28
SWISS Logo
9:50 pm - 9:10 pm
BOS
-
BIO
17h 20m
1 stop
SWISS Logo
9:25 am - 8:20 pm
BIO
-
BOS
16h 55m
1 stop
$379SWISS
Wed, Feb 18 - Wed, Feb 25
Lufthansa Logo
8:40 pm - 9:55 pm
BOS
-
BIO
19h 15m
1 stop
Lufthansa Logo
7:40 am - 6:35 pm
BIO
-
BOS
16h 55m
1 stop
$385Lufthansa
Wed, Feb 18 - Thu, Feb 26
Delta Logo
6:30 pm - 11:30 am
BOS
-
BIO
11h 00m
1 stop
Delta Logo
7:25 am - 1:40 pm
BIO
-
BOS
12h 15m
1 stop
$387Delta
Tue, Feb 17 - Thu, Feb 26
Delta Logo
6:30 pm - 5:20 pm
BOS
-
BIO
16h 50m
1 stop
Delta Logo
11:55 am - 6:55 pm
BIO
-
BOS
13h 00m
1 stop
$389Delta
Tue, Feb 17 - Fri, Feb 27

Iberia flights from Boston to Bilbao

Our best Iberia deals on Boston to Bilbao flight tickets
Iberia
Apr 20
BOS10:50 pmBoston Logan Intl
18h 10m
1 stop
BIO11:00 pmBilbao
Apr 28
BIO10:50 pmBilbao
28h 15m
1 stop
BOS9:05 pmBoston Logan Intl
$378
Iberia
Apr 15
BOS10:50 pmBoston Logan Intl
14h 20m
1 stop
BIO7:10 pmBilbao
Apr 22
BIO2:25 pmBilbao
12h 40m
1 stop
BOS9:05 pmBoston Logan Intl
$390
Iberia
Feb 19
BOS11:55 amBoston Logan Intl
14h 35m
2 stops
BIO8:30 amBilbao
Feb 26
BIO6:45 amBilbao
19h 05m
1 stop
BOS7:50 pmBoston Logan Intl
$426

SWISS flights from Boston to Bilbao

Our best SWISS deals on Boston to Bilbao flight tickets
SWISS
Feb 18
BOS9:50 pmBoston Logan Intl
17h 20m
1 stop
BIO9:10 pmBilbao
Feb 25
BIO9:25 amBilbao
16h 55m
1 stop
BOS8:20 pmBoston Logan Intl
$379
SWISS
Feb 18
BOS9:50 pmBoston Logan Intl
17h 20m
1 stop
BIO9:10 pmBilbao
Mar 1
BIO11:35 amBilbao
38h 25m
2 stops
BOS8:00 pmBoston Logan Intl
$487

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 January 26, 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

Mon 2/23

8:40 pm-11:05 pm

1 stop20h 25m

Bilbao

Mon 3/2

6:50 pm-6:35 pm

1 stop29h 45m

$356

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Tue 4/28

7:15 am-10:38 pm

2 stops21h 23m

$368

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 2/23

8:40 pm-11:05 pm

1 stop20h 25m

Bilbao

Mon 3/2

5:35 pm-2:05 pm

2 stops26h 30m

$370

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Tue 4/28

7:15 am-10:38 pm

2 stops21h 23m

$374

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Tue 4/28

9:00 pm-3:10 pm

1 stop24h 10m

$376

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

10:50 pm-4:25 pm

1 stop11h 35m

Bilbao

Tue 4/28

10:50 pm-9:05 pm

1 stop28h 15m

$378

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 2/18

9:50 pm-9:10 pm

1 stop17h 20m

Bilbao

Wed 2/25

9:25 am-8:20 pm

1 stop16h 55m

$379

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 2/18

8:40 pm-9:55 pm

1 stop19h 15m

Bilbao

Thu 2/26

7:40 am-6:35 pm

1 stop16h 55m

$385

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 2/17

6:30 pm-11:30 am

1 stop11h 00m

Bilbao

Thu 2/26

7:25 am-1:40 pm

1 stop12h 15m

$387

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 2/17

6:30 pm-5:20 pm

1 stop16h 50m

Bilbao

Fri 2/27

11:55 am-6:55 pm

1 stop13h 00m

$389

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 January. Flight prices, which tend to average around $529, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in January, then March is your next best option. Flight prices from Boston to Bilbao during March average around $556.

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 $639 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

11h 20m

Direct flights

None
The fastest flight from Boston to Bilbao takes 11h 20m
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 11h 20m.

  • 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
3,098 reviews
Search Iberia flights
United AirlinesPriceFrom $393Free CancellationRating
7.4
9,204 reviews
Search United Airlines flights
DeltaPriceFrom $424Free CancellationRating
7.9
8,118 reviews
Search Delta flights
American AirlinesPriceFrom $439Free CancellationRating
7.2
11,195 reviews
Search American Airlines flights
LufthansaPriceFrom $453Free CancellationRating
6.8
7,748 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $516Free CancellationRating
7.7
1,443 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.

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