Which layover airport offers the lowest fares from Boston to Bilbao?

Flights via Munich (MUC) offer the lowest average round-trip price of $371.

Which airport is the most popular layover for flights between Boston and Bilbao?

Barcelona (BCN) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Boston to Bilbao?

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 9h 37m.

Which layover airport has the shortest connection time from Boston to Bilbao?

Amsterdam (AMS) has the shortest average layover time for this route: 2h 08m.

What is the cheapest airline that flies from Boston Logan Intl to Bilbao?

Scandinavian Airlines is the most popular carrier operating from Boston Logan Intl to Bilbao

What airlines fly to Bilbao?

Iberia, Lufthansa and American Airlines are the top three most popular airlines that fly to Bilbao from Boston according to our data. Iberia is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 8 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Boston Logan Intl Airport to Bilbao Airport is 8 as of October 2025.

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.

$367 Cheap Flights from Boston to Bilbao in 2025/26

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4:45 pm - 1:00 pmBOS-BIO

14h 15m1 stop

9:15 am - 3:15 pmBIO-BOS

12h 00m1 stop

$367Iberia

Find Deal

Wed, Feb 18 - Wed, Feb 25

9:50 pm - 9:10 pmBOS-BIO

17h 20m1 stop

11:35 am - 8:20 pmBIO-BOS

38h 45m2 stops

$380SWISS

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Wed, Feb 18 - Wed, Feb 25

1:10 pm - 11:20 amBOS-BIO

16h 10m2 stops

6:50 am - 1:20 pmBIO-BOS

12h 30m1 stop

$405Delta

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Tue, Nov 11 - Tue, Nov 18

5:10 pm - 4:30 pmBOS-BIO

17h 20m2 stops

12:15 pm - 11:54 pmBIO-BOS

17h 39m2 stops

$414Delta

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Tue, Nov 11 - Tue, Nov 18

5:20 pm - 10:25 amBOS-BIO

11h 05m1 stop

7:10 am - 1:35 pmBIO-BOS

12h 25m1 stop

$436KLM

Find Deal

Mon, Apr 13 - Mon, Apr 20

7:07 pm - 11:05 pmBOS-BIO

21h 58m2 stops

7:25 am - 6:35 pmBIO-BOS

17h 10m1 stop

$437United Airlines

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Thu, Dec 4 - Thu, Dec 11

8:40 pm - 6:05 pmBOS-BIO

15h 25m1 stop

6:45 am - 1:25 pmBIO-BOS

12h 40m1 stop

$441United Airlines

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Wed, Nov 12 - Sun, Nov 16

2:21 pm - 9:55 pmBOS-BIO

25h 34m2 stops

6:45 am - 1:25 pmBIO-BOS

12h 40m1 stop

$446Lufthansa

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Wed, Nov 12 - Sun, Nov 16

7:10 pm - 4:30 pmBOS-BIO

15h 20m1 stop

11:55 am - 1:20 pmBIO-BOS

31h 25m1 stop

$450KLM

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Thu, Nov 27 - Tue, Dec 2

8:40 pm - 9:55 pmBOS-BIO

19h 15m1 stop

6:45 am - 1:25 pmBIO-BOS

12h 40m1 stop

$461Lufthansa

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Wed, Nov 12 - Sun, Nov 16

United Airlines flights from Boston to Bilbao

Our best United Airlines deals on Boston to Bilbao flight tickets

United Airlines

Dec 4

BOS7:07 pmBoston Logan Intl

21h 58m

2 stops

BIO11:05 pmBilbao

Dec 11

BIO7:25 amBilbao

17h 10m

1 stop

BOS6:35 pmBoston Logan Intl

$437

Find similar

United Airlines

Nov 12

BOS8:40 pmBoston Logan Intl

15h 25m

1 stop

BIO6:05 pmBilbao

Nov 16

BIO6:45 amBilbao

12h 40m

1 stop

BOS1:25 pmBoston Logan Intl

$441

Find similar

United Airlines

Dec 4

BOS9:30 amBoston Logan Intl

26h 35m

2 stops

BIO6:05 pmBilbao

Dec 11

BIO7:25 amBilbao

21h 12m

2 stops

BOS10:37 pmBoston Logan Intl

$444

Find similar

KLM flights from Boston to Bilbao

Our best KLM deals on Boston to Bilbao flight tickets

KLM

Apr 13

BOS5:20 pmBoston Logan Intl

11h 05m

1 stop

BIO10:25 amBilbao

Apr 20

BIO7:10 amBilbao

12h 25m

1 stop

BOS1:35 pmBoston Logan Intl

$436

Find similar

KLM

Nov 27

BOS7:10 pmBoston Logan Intl

15h 20m

1 stop

BIO4:30 pmBilbao

Dec 2

BIO11:55 amBilbao

31h 25m

1 stop

BOS1:20 pmBoston Logan Intl

$450

Find similar

KLM

Nov 27

BOS7:10 pmBoston Logan Intl

10h 10m

1 stop

BIO11:20 amBilbao

Dec 2

BIO11:55 amBilbao

31h 25m

1 stop

BOS1:20 pmBoston Logan Intl

$451

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 2/18

4:45 pm-1:00 pm

1 stop14h 15m

Bilbao

Wed 2/25

9:15 am-3:15 pm

1 stop12h 00m

$367

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 2/18

9:50 pm-9:10 pm

1 stop17h 20m

Bilbao

Wed 2/25

11:35 am-8:20 pm

2 stops38h 45m

$380

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 11/11

1:10 pm-11:20 am

2 stops16h 10m

Bilbao

Tue 11/18

6:50 am-1:20 pm

1 stop12h 30m

$405

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 11/11

5:10 pm-4:30 pm

2 stops17h 20m

Bilbao

Tue 11/18

12:15 pm-11:54 pm

2 stops17h 39m

$414

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/13

5:20 pm-10:25 am

1 stop11h 05m

Bilbao

Mon 4/20

7:10 am-1:35 pm

1 stop12h 25m

$436

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Thu 12/4

7:07 pm-11:05 pm

2 stops21h 58m

Bilbao

Thu 12/11

7:25 am-6:35 pm

1 stop17h 10m

$437

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 11/12

8:40 pm-6:05 pm

1 stop15h 25m

Bilbao

Sun 11/16

6:45 am-1:25 pm

1 stop12h 40m

$441

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 11/12

2:21 pm-9:55 pm

2 stops25h 34m

Bilbao

Sun 11/16

6:45 am-1:25 pm

1 stop12h 40m

$446

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Thu 11/27

7:10 pm-4:30 pm

1 stop15h 20m

Bilbao

Tue 12/2

11:55 am-1:20 pm

1 stop31h 25m

$450

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 11/12

8:40 pm-9:55 pm

1 stop19h 15m

Bilbao

Sun 11/16

6:45 am-1:25 pm

1 stop12h 40m

$461

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 $547, 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 February is your next best option. Flight prices from Boston to Bilbao during February average around $557.

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from Boston to Bilbao is on a Sunday. Travelers who choose to depart for Bilbao on a Sunday will often find tickets for as low as $708. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $877. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the morning. Flights from Boston to Bilbao during this time can be as low as $663. In the afternoon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $820 per ticket.

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 $669 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 $490 on momondo.

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

Direct flights	None

There are no direct flights from Boston to Bilbao. There are no popular flight routes from Boston to Bilbao.

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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 40m.
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?
The number of operators available for flights from Boston Logan Intl Airport to Bilbao Airport is 8 as of October 2025.
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?
Based on momondo bookings for flights between Boston and Bilbao, the leading airline is Iberia, making up 35% of the total bookings. Other popular airlines include Lufthansa with 18%, KLM with 10%, and United Airlines with 10%.

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
Iberia	PriceFrom $395	Free Cancellation	Rating 7.0 2,996 reviews	Search Iberia flights
Delta	PriceFrom $424	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
American Airlines	PriceFrom $439	Free Cancellation	Rating 7.2 11,029 reviews	Search American Airlines flights
Lufthansa	PriceFrom $453	Free Cancellation	Rating 6.8 7,509 reviews	Search Lufthansa flights
TAP AIR PORTUGAL	PriceFrom $468	Free Cancellation	Rating 7.1 2,027 reviews	Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom $499	Free Cancellation	Rating 7.4 8,988 reviews	Search United Airlines flights
KLM	PriceFrom $516	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM flights
LEVEL	PriceFrom $523	Free Cancellation	Rating 0.0	Search LEVEL flights

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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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Cheap flights from Boston to Bilbao from $367

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Bilbao departing on 2/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

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Find the cheapest flights from Boston to Bilbao

Cheap round-trip flights

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United Airlines flights from Boston to Bilbao

Our best United Airlines deals on Boston to Bilbao flight tickets

KLM flights from Boston to Bilbao

Our best KLM deals on Boston to Bilbao flight tickets

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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?

What is the cheapest day to depart on your flight to Bilbao?

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the morning. Flights from Boston to Bilbao during this time can be as low as $663. In the afternoon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $820 per ticket.

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

What is the cheapest airline that flies from Boston Logan Intl to Bilbao?

Scandinavian Airlines is the most popular carrier operating from Boston Logan Intl to Bilbao

What airlines fly to Bilbao?

Which airport is the most popular layover for flights between Boston and Bilbao?

Barcelona (BCN) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Boston to Bilbao?

Flights via Munich (MUC) offer the lowest average round-trip price of $371.

Which layover airport has the shortest travel time from Boston to Bilbao?

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 9h 37m.

Which layover airport has the shortest connection time from Boston to Bilbao?

Amsterdam (AMS) has the shortest average layover time for this route: 2h 08m.

When to book flights from Boston to Bilbao

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

Direct flights

How far is Boston Logan Intl to Bilbao by plane?

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

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?

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

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

Traveling to a place near Bilbao?

Why use momondo?

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

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

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

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

An easier way to manage your Bilbao trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Spain

Airports servicing Basque Country