BIO - BOS

$279 Find Cheap Flights from Bilbao to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bilbao to Boston departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bilbao to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bilbao to Boston, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Bilbao to Boston (BIO-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bilbao to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bilbao to Boston

Wed, Feb 18 - Wed, Feb 25
American Airlines Logo
9:15 am - 3:15 pmBIO-BOS
12h 00m1 stop
American Airlines Logo
9:20 pm - 1:00 pmBOS-BIO
9h 40m1 stop
$401American Airlines
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Wed, Feb 18 - Wed, Feb 25
American Airlines Logo
6:45 am - 3:15 pmBIO-BOS
14h 30m1 stop
American Airlines Logo
2:20 pm - 8:30 amBOS-BIO
12h 10m2 stops
$405American Airlines
Find Deal
Sat, Nov 8 - Thu, Nov 13
TAP AIR PORTUGAL Logo
12:10 pm - 8:10 pmBIO-BOS
14h 00m1 stop
TAP AIR PORTUGAL Logo
10:45 pm - 5:55 pmBOS-BIO
13h 10m1 stop
$437TAP AIR PORTUGAL
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Sun, Nov 9 - Thu, Nov 13
 Logo
6:40 pm - 8:55 pmBIO-BOS
32h 15m2 stops
 Logo
10:40 pm - 8:20 amBOS-BIO
27h 40m1 stop
Thu, Feb 19 - Mon, Feb 23
Iberia Logo
1:35 pm - 10:49 pmBIO-BOS
15h 14m2 stops
Iberia Logo
10:40 pm - 5:00 pmBOS-BIO
12h 20m1 stop
$476Iberia
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Thu, Feb 19 - Mon, Feb 23
Iberia Logo
1:35 pm - 10:49 pmBIO-BOS
15h 14m2 stops
Iberia Logo
4:45 pm - 1:35 pmBOS-BIO
14h 50m2 stops
$485Iberia
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Sun, Nov 9 - Thu, Nov 13
 Logo
10:00 pm - 8:55 pmBIO-BOS
28h 55m1 stop
 Logo
10:40 pm - 8:20 amBOS-BIO
27h 40m1 stop
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:45 am - 1:35 pmBIO-BOS
12h 50m1 stop
United Airlines Logo
4:15 pm - 12:05 pmBOS-BIO
13h 50m1 stop
$521United Airlines
Find Deal
Mon, Oct 27 - Sat, Nov 1
TAP AIR PORTUGAL Logo
7:20 pm - 3:35 pmBIO-BOS
25h 15m1 stop
TAP AIR PORTUGAL Logo
11:45 pm - 5:55 pmBOS-BIO
13h 10m1 stop
$523TAP AIR PORTUGAL
Find Deal
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:45 am - 6:13 pmBIO-BOS
17h 28m2 stops
United Airlines Logo
12:30 pm - 12:05 pmBOS-BIO
17h 35m2 stops
$526United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Bilbao to Boston flights

Get data-powered insights and trends into flights from Bilbao to Boston to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Bilbao to Boston?

The average price of all round-trip flights from Bilbao to Boston clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Boston on a Friday and more expensive on a Thursday. On your return trip to Bilbao, you should consider flying back on a Sunday, and avoid Saturdays for better deals.

What is the cheapest month to fly from Bilbao to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bilbao to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Bilbao to Boston is January, where tickets cost $396 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $811 and $731 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Bilbao to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Bilbao to Boston, you should book around 5 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$279
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Bilbao to Boston

When to book flights from Bilbao to Boston

Are your dates flexible? Find out the best times to travel from Bilbao to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Bilbao to Boston

  • What is the cheapest flight from Bilbao to Boston?

    In the last 3 days, the lowest price for a flight from Bilbao to Boston was $279 for a one-way ticket and $401 for a round-trip.

  • Do I need a passport to fly between Bilbao and Boston?

    Yes, you’ll need a passport to travel to Boston from Bilbao.

  • Which aircraft models fly most regularly from Bilbao to Boston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Bilbao to Boston?

    Star Alliance, and oneworld are the airline alliances operating flights between Bilbao and Boston, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Bilbao to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Bilbao to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Bilbao to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Bilbao is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Bilbao to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Bilbao with another airline. Booking your flights between Bilbao and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bilbao to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Bilbao up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Bilbao to Boston

 
See real verified KAYAK customer reviews for airlines flying from Bilbao to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bilbao to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IberiaOverall score based on 2900 reviews
7.6Crew
7.1Boarding
6.7Comfort
6.6Entertainment
6.3Food
Airline reviews

Basic service for a decent price, all amenities are à la cart

6.0 GoodDan, Aug 2025BCN - JFK
Read more Iberia reviews

Basic service for a decent price, all amenities are à la cart

Cabin crew friendlier, they weren't weren't unfriendly, but simply professional and not more

The plane needs upgrading, the seats are uncomfortable, we are a family of three and they split us and did nothing to group us together, and the food is horrible compared to other airlines bu

Horrible almost missed my flight because my 1st flight was delayed. Airline crew is so unprofessional. The people on the plane do whatever they want kids running screaming. Will never fly this airline again Suitcases never arrived

Boarding was odd. Gates switched and had to take a bus to the plane. Luggage got lost. Still waiting on one bag. Flight itself was very nice!

Do Not Fly Iberia. Horrible experience. Iberia changes things at random -like the date of the flight and seat you have bought. After buying my flight, they contacted me and told me I had to return a day later. Then when I was boarding the flight, I discovered they had changed my window seat in a row away from the wing, to an aisle seat in front of the toilet! The worse seat on the plane. But it wasn’t just me- a family was scattered all over the plane. I was able to trade my seat because a father was separated from his son. Unfortunately the seat was the window seat directly over the wing, the loudest seat in the plane. I couldn’t sleep, even with noise cancelling earphones. Also, I ordered gluten free meal-which was tasteless and gave me cramps.

I have nothing but great things to say about the crew of the American Airlines flight from Madrid to Dallas. They were fantastic! I do, however, have some disregard for the flight attendant that was late in Dallas, causing us to further delay the boarding of our flight to Portland, and leading to the eventual cancellation of that flight. Because that crew-member was so late, we got caught-up in a weather-related ground stop, eventually causing our pilots to "time-out". So we couldn't get out of Dallas. We would have departed DFW on-time (and before the arrival of the thunderstorm) if not for the lateness of that crew member. The whole time the pilots couldn't tell us whether the flight would be cancelled, and that they couldn't get any information from the airline. By the time we knew the flight was cancelled, all of the flights for the following day were full. So, we didn't even get offered a viable option to get home. The American Airlines customer service desk at DFW was grossly under-staffed. And there were several people who waited in line for four-hours before being helped at that desk. We waited in line for almost 2-hours, until I was able to speak with a customer service agent on the phone (after being on-hold for over an hour). So, once we knew the information about how to get our bag in PDX, and that there weren't any options for flights the next day, we left the line & began searching for another way home. We eventually had to purchase a ticket home on a different airline, in order to get my wife to work on Monday. And we are pursuing a refund of that DFW-PDX leg of the journey. The good news is that the late flight attendant's hair was perfect. And she looked fantastic as she departed the airport & headed back home, while we all hunkered down to sleep in the terminal for the night.

One of the crew members hit me with the car and not even says anything

They need to start flying on time. We lost 2 days of our time because they delayed flight both ways.

Even in the premium economy, I found the seats incredibly uncomfortable. I hated that booking through Kayak, it wasn't clear that it was a Level flight, not Iberia. Everything felt cheaply made and not at all worth the airfare we paid.

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

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