BIO - BOS

$323 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 12/12. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$405
Overall average: $642
LEVEL
Thu 2/12Thu 2/19
BIO - BOS • 1 stop
Cheapest one-way
$323
Typical prices: $407-$540
Multiple Airlines
Fri 12/12
BIO - BOS • 1 stop
Top airlines
LEVEL
Cheapest • from $405 (round-trip)
Iberia
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 34% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boston!
Flight Deals
Booking Insights
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

Thu, Feb 12 - Thu, Feb 19
LEVEL Logo
7:10 am - 8:55 pmBIO-BOS
19h 45m1 stop
LEVEL Logo
10:40 pm - 10:25 amBOS-BIO
29h 45m1 stop
$405LEVEL
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Fri, Dec 5 - Tue, Dec 9
Multiple Airlines Logo
6:45 am - 3:15 pmBIO-BOS
14h 30m1 stop
Multiple Airlines Logo
4:10 pm - 11:15 pmBOS-BIO
25h 05m2 stops
$422Multiple Airlines
Find Deal
Thu, Feb 19 - Thu, Feb 26
Iberia Logo
2:40 pm - 8:55 pmBIO-BOS
12h 15m1 stop
Iberia Logo
10:40 pm - 5:00 pmBOS-BIO
12h 20m1 stop
$427Iberia
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Thu, Feb 12 - Thu, Feb 19
Iberia Logo
3:35 pm - 8:55 pmBIO-BOS
11h 20m1 stop
Iberia Logo
12:01 pm - 8:30 amBOS-BIO
14h 29m2 stops
$428Iberia
Find Deal
Thu, Feb 19 - Thu, Feb 26
Finnair Logo
6:45 am - 10:52 pmBIO-BOS
22h 07m2 stops
Finnair Logo
9:20 pm - 11:15 pmBOS-BIO
19h 55m1 stop
$435Finnair
Find Deal
Sat, Mar 7 - Sat, May 30
Finnair Logo
6:45 am - 10:32 pmBIO-BOS
21h 47m2 stops
Finnair Logo
9:20 pm - 11:15 pmBOS-BIO
19h 55m1 stop
$511Finnair
Find Deal
Thu, Feb 19 - Mon, Feb 23
TAP AIR PORTUGAL Logo
12:10 pm - 8:10 pmBIO-BOS
14h 00m1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 5:55 pmBOS-BIO
17h 50m1 stop
$536TAP AIR PORTUGAL
Find Deal
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:45 am - 1:35 pmBIO-BOS
12h 50m1 stop
United Airlines Logo
1:55 pm - 12:05 pmBOS-BIO
16h 10m2 stops
$545United Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:45 am - 5:21 pmBIO-BOS
16h 36m2 stops
United Airlines Logo
1:55 pm - 12:05 pmBOS-BIO
16h 10m2 stops
$548United Airlines
Find Deal
Sat, Dec 27 - Sun, Jan 11
TAP AIR PORTUGAL Logo
12:10 pm - 2:35 pmBIO-BOS
32h 25m1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 6:35 pmBOS-BIO
18h 30m1 stop
$585TAP AIR PORTUGAL
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 $719 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 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Find deals

Good to know

Low seasonMarch
Cheapest flight$323
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 19% 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 $323 for a one-way ticket and $405 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?

    oneworld is the only airline alliance operating flights between Bilbao and Boston.

  • 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 3007 reviews
6.3Food
6.7Comfort
7.1Boarding
7.7Crew
6.6Entertainment
Airline reviews

why can't planes be boarded from back to front?? everything was great otherwise

10.0 ExcellentAnonymous, Oct 2025MAD - IAD
Read more Iberia reviews

why can't planes be boarded from back to front?? everything was great otherwise

We flew into Barcelona and the plane was so cramped and very uncomfortable and dirty. But we flew out of Madrid and that plane was much better. Would fly Iberia again.

For what we are willing to pay for international air travel, our experience was very good. We had no problem checking in, we had very little wait time at the AA counter in Madrid, and the staff in Madrid were very helpful. The flight crew was helpful and courteous, the plane was on the newer side, and our assigned seats were together without us needing to purchase them. The flight took off on time and arrived early. Overall, it was a pleasant experience or as much as could be expected in economy for almost 10 hours.

Boarding was easy, the flight left on time and even landed 20 minutes early. The food was plentiful and really good! The crew was kind & helpful. Overall it was an exceptional experience!

The flight was safe, confortable and convenient. Thank you. I hope to come back soon!

temperature was too cold there should be free blankets, seat are very uncomfortable, entertainment is limited.

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

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!

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

Information on your arrival and departure airports

Bilbao (BIO)
Boston (BOS)