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Cheap flights from Boston to Bilbao from $316

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 7/8. 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
1 adult, Economy, 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.
KLM Logo
8:25 pm - 10:45 pm
BOS
-
BIO
20h 20m
1 stop
KLM Logo
5:15 pm - 1:18 pm
BIO
-
BOS
26h 03m
1 stop
$740KLM
Fri, Aug 7 - Tue, Aug 18
United Airlines Logo
8:05 pm - 11:25 pm
BOS
-
BIO
21h 20m
1 stop
United Airlines Logo
11:55 am - 5:40 pm
BIO
-
BOS
11h 45m
1 stop
$742United Airlines
Mon, Jul 27 - Thu, Aug 6
Delta Logo
5:10 pm - 9:50 am
BOS
-
BIO
10h 40m
1 stop
Delta Logo
12:00 pm - 1:18 pm
BIO
-
BOS
31h 18m
1 stop
$743Delta
Mon, Jul 27 - Mon, Aug 10
United Airlines Logo
2:15 pm - 5:55 pm
BOS
-
BIO
21h 40m
2 stops
United Airlines Logo
11:55 am - 5:40 pm
BIO
-
BOS
11h 45m
1 stop
$747United Airlines
Mon, Jul 27 - Thu, Aug 6
Delta Logo
10:00 am - 9:50 am
BOS
-
BIO
17h 50m
2 stops
Delta Logo
10:30 am - 7:35 pm
BIO
-
BOS
15h 05m
1 stop
$748Delta
Tue, Jul 28 - Tue, Aug 11
United Airlines Logo
6:50 pm - 5:55 pm
BOS
-
BIO
17h 05m
2 stops
United Airlines Logo
6:50 am - 4:48 pm
BIO
-
BOS
15h 58m
2 stops
$750United Airlines
Sat, Aug 15 - Tue, Aug 25
LEVEL Logo
10:55 pm - 8:15 am
BOS
-
BIO
27h 20m
1 stop
LEVEL Logo
7:10 am - 9:45 pm
BIO
-
BOS
20h 35m
1 stop
$753LEVEL
Wed, Jul 8 - Thu, Jul 16
Air Canada Logo
3:35 pm - 5:55 pm
BOS
-
BIO
20h 20m
2 stops
Air Canada Logo
6:50 am - 5:42 pm
BIO
-
BOS
40h 52m
2 stops
$754Air Canada
Mon, Jul 27 - Thu, Aug 6
Delta Logo
5:15 pm - 4:30 pm
BOS
-
BIO
17h 15m
2 stops
Delta Logo
10:30 am - 10:43 pm
BIO
-
BOS
18h 13m
2 stops
$755Delta
Sat, Aug 15 - Tue, Aug 25
United Airlines Logo
6:50 pm - 11:25 pm
BOS
-
BIO
22h 35m
2 stops
United Airlines Logo
12:30 pm - 9:59 pm
BIO
-
BOS
15h 29m
1 stop
$756United Airlines
Sun, Aug 2 - Wed, Aug 12

KLM flights from Boston to Bilbao

Our best KLM deals on Boston to Bilbao flight tickets
KLM
Aug 7
BOS8:25 pmBoston Logan Intl
20h 20m
1 stop
BIO10:45 pmBilbao
Aug 18
BIO5:15 pmBilbao
26h 03m
1 stop
BOS1:18 pmBoston Logan Intl
$740
KLM
Jul 7
BOS5:20 pmBoston Logan Intl
16h 35m
1 stop
BIO3:55 pmBilbao
Jul 15
BIO8:20 amBilbao
14h 14m
1 stop
BOS4:34 pmBoston Logan Intl
$759
KLM
Jul 5
BOS5:10 pmBoston Logan Intl
10h 40m
1 stop
BIO9:50 amBilbao
Jul 14
BIO8:20 amBilbao
14h 14m
1 stop
BOS4:34 pmBoston Logan Intl
$763

SWISS flights from Boston to Bilbao

Our best SWISS deals on Boston to Bilbao flight tickets
SWISS
Jul 5
BOS9:40 pmBoston Logan Intl
16h 40m
1 stop
BIO8:20 pmBilbao
Jul 13
BIO9:10 pmBilbao
28h 45m
1 stop
BOS7:55 pmBoston Logan Intl
$765
SWISS
Oct 1
BOS5:20 pmBoston Logan Intl
14h 15m
1 stop
BIO1:35 pmBilbao
Oct 19
BIO2:10 pmBilbao
31h 00m
2 stops
BOS3:10 pmBoston Logan Intl
$786

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 June 5, 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

Cheapest round-trip

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Fri 8/7

8:25 pm-10:45 pm

1 stop20h 20m

Bilbao

Tue 8/18

5:15 pm-1:18 pm

1 stop26h 03m

$740

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 7/27

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Thu 8/6

11:55 am-5:40 pm

1 stop11h 45m

$742

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 7/27

5:10 pm-9:50 am

1 stop10h 40m

Bilbao

Mon 8/10

12:00 pm-1:18 pm

1 stop31h 18m

$743

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 7/27

2:15 pm-5:55 pm

2 stops21h 40m

Bilbao

Thu 8/6

11:55 am-5:40 pm

1 stop11h 45m

$747
Quickest round-trip

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 7/28

10:00 am-9:50 am

2 stops17h 50m

Bilbao

Tue 8/11

10:30 am-7:35 pm

1 stop15h 05m

$748

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sat 8/15

6:50 pm-5:55 pm

2 stops17h 05m

Bilbao

Tue 8/25

6:50 am-4:48 pm

2 stops15h 58m

$750

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 7/8

10:55 pm-8:15 am

1 stop27h 20m

Bilbao

Thu 7/16

7:10 am-9:45 pm

1 stop20h 35m

$753

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 7/27

3:35 pm-5:55 pm

2 stops20h 20m

Bilbao

Thu 8/6

6:50 am-5:42 pm

2 stops40h 52m

$754

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sat 8/15

5:15 pm-4:30 pm

2 stops17h 15m

Bilbao

Tue 8/25

10:30 am-10:43 pm

2 stops18h 13m

$755

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 8/2

6:50 pm-11:25 pm

2 stops22h 35m

Bilbao

Wed 8/12

12:30 pm-9:59 pm

1 stop15h 29m

$756

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 typical price of a round-trip flight between Boston and Bilbao?

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Boston is in March. Flight prices, which tend to average around $495, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in March, then January is your next best option. Flight prices from Boston to Bilbao during January average around $528.

How far in advance should I book a flight from Boston 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 $705 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 $527 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

10h 40m

Direct flights

None
The fastest flight from Boston to Bilbao takes 10h 40m
There are no direct flights from Boston to Bilbao. There are no popular flight routes from Boston to Bilbao.
Search flight deals

Frequently asked questions about flying from Boston to Bilbao

  • 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 10h 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?

  • 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 $386Free CancellationRating
7.0
3,224 reviews
Search Iberia flights
United AirlinesPriceFrom $393Free CancellationRating
7.4
9,780 reviews
Search United Airlines flights
American AirlinesPriceFrom $439Free CancellationRating
7.1
11,652 reviews
Search American Airlines flights
LufthansaPriceFrom $453Free CancellationRating
6.8
8,038 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.2
2,272 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $559Free CancellationRating
7.8
1,526 reviews
Search KLM flights
DeltaPriceFrom $608Free CancellationRating
7.8
8,396 reviews
Search Delta flights
Air EuropaPriceFrom $714Free CancellationRating
7.0
618 reviews
Search Air Europa flights
LEVELPriceFrom $897Free CancellationRating
0.0
0 reviews
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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