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Bilbao

$288+ Cheap flights from Boston (BOS) to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BIO
May 3 — May 101
Sat 5/3
Sat 5/10
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Bilbao are usually found in February or March, booked 14 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

Cheap flight deals from Boston to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$457
(Cheapflightsfares)

One-way from

$288
(oojo)

Popular in

December

Cheapest in

February

Average price

$805
Provider with most accurate pricing for Boston Logan Intl-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Bilbao flights.
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From Boston Logan Intl to Bilbao
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One-way flight from Boston Logan Intl to Bilbao
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Highest demand for flights based on searches. 3% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Boston to Bilbao

Cheapest flights from Boston to Bilbao
Explore the most affordable flight options available from Boston to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2025.

This Finnair deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/179:20 pmBOS - BIO
1 stop19h 55mFinnair
Thu 9/256:45 amBIO - BOS
1 stop14h 15mFinnair
Deal found 4/28$479
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:42 pmBOS - BIO
2 stops12h 48mAmerican Airlines
Thu 9/259:15 amBIO - BOS
1 stop16h 35mAmerican Airlines
Deal found 4/28$484
This KLM deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/245:20 pmBOS - BIO
1 stop11h 05mKLM
Thu 10/26:50 amBIO - BOS
1 stop12h 50mKLM
Deal found 4/28$496
This SWISS deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/295:05 pmBOS - BIO
2 stops18h 45mSWISS
Wed 7/911:50 amBIO - BOS
2 stops14h 05mSWISS
Deal found 4/27$508
This Finnair deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/109:20 pmBOS - BIO
1 stop19h 55mMultiple Airlines
Mon 9/229:35 pmBIO - BOS
1 stop23h 25mMultiple Airlines
Deal found 4/28$525
This Cheapflightsfares deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/79:20 pmBOS - BIO
1 stop13h 35mIberia
Sun 9/211:30 pmBIO - BOS
1 stop12h 20mIberia
Deal found 4/28$542
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2912:40 pmBOS - BIO
2 stops24h 05mUnited Airlines
Thu 10/167:15 amBIO - BOS
1 stop16h 25mUnited Airlines
Deal found 4/27$549
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/249:55 amBOS - BIO
2 stops18h 30mDelta
Thu 10/211:05 amBIO - BOS
2 stops17h 24mDelta
Deal found 4/28$584
This Lufthansa deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/108:05 pmBOS - BIO
1 stop21h 20mLufthansa
Mon 8/186:35 pmBIO - BOS
1 stop29h 05mLufthansa
Deal found 4/27$621
This Air France deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:55 pmBOS - BIO
1 stop10h 20mAir France
Sun 8/177:10 amBIO - BOS
1 stop12h 30mAir France
Deal found 4/27$694
This Brussels Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/105:50 pmBOS - BIO
2 stops16h 15mBrussels Airlines
Mon 8/184:55 pmBIO - BOS
2 stops28h 45mBrussels Airlines
Deal found 4/27$784
This Austrian Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:10 pmBOS - BIO
2 stops23h 40mAustrian Airlines
Tue 7/226:45 amBIO - BOS
2 stops37h 05mAustrian Airlines
Deal found 4/28$868

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2025.
Use the filters below to find and compare flights from Boston to Bilbao that are best for you.

Fly from

Boston

Fly to

Bilbao

Route

Depart

Return

Price

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 6/29

5:05 pm-5:50 pm

2 stops18h 45m

Bilbao

Wed 7/9

11:50 am-7:55 pm

2 stops14h 05m

$508

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 5/12

10:50 pm-4:25 pm

1 stop11h 35m

Bilbao

Wed 5/21

3:10 pm-9:05 pm

1 stop11h 55m

$546

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 5/12

1:20 pm-8:30 am

2 stops13h 10m

Bilbao

Wed 5/21

9:15 am-7:50 pm

1 stop16h 35m

$554

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 7/7

6:50 pm-11:15 am

1 stop10h 25m

Bilbao

Thu 7/24

7:10 am-3:05 pm

1 stop13h 55m

$685

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Fri 7/25

6:50 pm-10:55 am

1 stop10h 05m

Bilbao

Mon 8/11

5:15 pm-1:35 pm

1 stop26h 20m

$686

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 6/29

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Fri 8/1

12:30 pm-5:49 pm

1 stop11h 19m

$721

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 6/29

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Wed 7/9

6:45 am-9:55 am

2 stops33h 10m

$727

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 5/20

8:05 pm-5:50 pm

1 stop15h 45m

Bilbao

Mon 5/26

6:35 pm-5:40 pm

1 stop29h 05m

$730

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Thu 7/10

5:10 pm-10:50 pm

2 stops23h 40m

Bilbao

Tue 7/22

6:45 am-1:50 pm

2 stops37h 05m

$868

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 7/1

8:05 pm-4:05 pm

2 stops14h 00m

Bilbao

Sun 7/6

12:20 pm-5:40 pm

2 stops35h 20m

$968

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 19 results
1
2

Compare providers for flights from Boston to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Bilbao in April.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Bilbao flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Boston-Bilbao flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Boston-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Bilbao flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Bilbao

How far ahead should I book a flight from Boston to Bilbao?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Bilbao. Price data was last updated on April 25, 2025.

The price you pay for your flight from Boston to Bilbao may vary depending on when you book. For the best chance of a lower fare, look to book 14 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Boston to Bilbao?

Currently, January is the cheapest month in which you can book a flight from Boston to Bilbao (average of $541). Flying from Boston to Bilbao in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to BIO?

Find hourly flight availability from Boston to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 28, 2025.

It’s typically best to fly out from Boston to Bilbao in the morning. Doing so could potentially save you 20% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated April 28, 2025.
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,587 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Boston to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Boston to Bilbao round-trip?

    According to our current data, Iberia ($457), Finnair ($479), and American Airlines ($484) offers the cheapest pricing from Boston to Bilbao. Iberia is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Boston to Bilbao one-way?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $288. Vueling flights start at $330 while deals on KLM start at $412 one-way.

  • Can I find deals for flights from Boston to Bilbao that include hotel bookings?

    Yes. In addition to deals on Boston to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Bilbao.

  • Can I find deals for business class flights from Boston to Bilbao?

    Yes. Cheapflights offers flight deals from Boston to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Boston to Bilbao (average of $541). Flying from Boston to Bilbao in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Boston to San Sebastian flights
Hartford to Bilbao flights

Top 10 airlines flying from Boston to Bilbao

Discover the top 10 airlines that operate flights from Boston to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$402Average$621FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$428Average$695FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$481Average$843FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$499Average$800FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$506Average$685FlexibilityNo cancel feeOn-time71%
IberiaCheapest$528Average$713FlexibilityNo cancel feeOn-time77%
KLMCheapest$532Average$885FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$538Average$812FlexibilityNo cancel feeOn-time77%
VuelingCheapest$588Average$743FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$616Average$746FlexibilityNo cancel feeOn-time69%

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