$254+ Cheap flights from Bilbao (BIO) to Boston (BOS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — BOS
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from Bilbao to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Bilbao to Boston
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Cheapest flights from Bilbao to BostonExplore the most affordable flight options available from Bilbao to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from Bilbao to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 9/109:15 am -
1 stop12h 55m
Wed 9/239:05 pm -
1 stop13h 50m
Deal found 9/3![American Airlines logo]()
$460
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Thu 9/179:15 am -
1 stop16h 35m
Wed 9/305:40 pm -
1 stop17h 15m
Deal found 9/4![American Airlines logo]()
$461
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 11/56:45 am -
1 stop17h 15m
Sun 11/87:35 pm -
1 stop11h 15m
Deal found 9/3![American Airlines logo]()
$478
This LEVEL deal was found by Cheapflights users on 9/4. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:50 pm -
1 stop28h 15m
Wed 10/2110:55 pm -
1 stop11h 40m
Deal found 9/4![LEVEL logo]()
$490
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:20 pm -
1 stop13h 45m
Wed 9/3011:35 am -
2 stops14h 55m
Deal found 9/5![Iberia logo]()
$505
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 10/35:35 pm -
1 stop28h 35m
Sat 10/1012:29 pm -
2 stops14h 01m
Deal found 9/3![American Airlines logo]()
$506
This Iberia deal was found by Cheapflights users on 9/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:15 am -
1 stop15h 10m
Tue 12/18:00 pm -
1 stop10h 50m
Deal found 9/7![Iberia logo]()
$508
This Mytrip deal was found by Cheapflights users on 9/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/206:40 pm -
1 stop26h 00m
Sat 1/210:10 pm -
1 stop13h 45m
Deal found 9/7![TAP AIR PORTUGAL logo]()
$512
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 11/196:45 am -
1 stop13h 00m
Tue 12/112:00 pm -
2 stops17h 00m
Deal found 9/7![United Airlines logo]()
$520
Best flights from Bilbao to BostonDiscover carefully curated flight deals from Bilbao to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from Bilbao to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Iberia deal was found by Cheapflights users on 9/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/149:15 am -
2 stops15h 16m
Mon 1/188:00 pm -
1 stop14h 55m
Deal found 9/7![Iberia logo]()
$490
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 11/196:45 am -
1 stop13h 00m
Tue 12/112:00 pm -
2 stops17h 00m
Deal found 9/7![United Airlines logo]()
$520
This Air Canada deal was found by Cheapflights users on 9/4. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:45 am -
2 stops21h 52m
Fri 12/45:45 am -
2 stops30h 00m
Deal found 9/4![Air Canada logo]()
$537
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 11/56:45 am -
2 stops17h 49m
Sun 11/82:40 pm -
2 stops19h 30m
Deal found 9/3![United Airlines logo]()
$528
This Expedia deal was found by Cheapflights users on 9/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:15 am -
1 stop15h 10m
Sat 11/217:15 pm -
2 stops22h 00m
Deal found 9/6![Iberia logo]()
$566
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Sun 11/156:45 am -
2 stops22h 50m
Sat 11/211:29 pm -
2 stops17h 21m
Deal found 9/6![United Airlines logo]()
$530
This Rumbo deal was found by Cheapflights users on 9/4. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:30 pm -
2 stops15h 05m
Wed 10/2112:29 pm -
2 stops14h 01m
Deal found 9/4![Iberia logo]()
$574
Last-minute flights from Bilbao to BostonDiscover last-minute flight deals from Bilbao to Boston. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Bilbao to Boston. Data last updated September 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 9/109:15 am -
1 stop12h 55m
Wed 9/239:05 pm -
1 stop13h 50m
Deal found 9/3![American Airlines logo]()
$460
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Thu 9/179:15 am -
1 stop16h 35m
Wed 9/305:40 pm -
1 stop17h 15m
Deal found 9/4![American Airlines logo]()
$461
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:20 pm -
1 stop13h 45m
Wed 9/3011:35 am -
2 stops14h 55m
Deal found 9/5![Iberia logo]()
$505
This Rumbo deal was found by Cheapflights users on 9/5. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:55 pm -
1 stop11h 10m
Thu 9/2411:35 am -
2 stops14h 55m
Deal found 9/5![Iberia logo]()
$529
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 10/35:35 pm -
1 stop28h 35m
Sat 10/1012:29 pm -
2 stops14h 01m
Deal found 9/3![American Airlines logo]()
$506
This LEVEL deal was found by Cheapflights users on 9/4. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:50 pm -
1 stop28h 15m
Wed 10/2110:55 pm -
1 stop11h 40m
Deal found 9/4![LEVEL logo]()
$490
This Rumbo deal was found by Cheapflights users on 9/4. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:30 pm -
1 stop11h 35m
Wed 10/2112:29 pm -
2 stops14h 01m
Deal found 9/4![Iberia logo]()
$532
This Iberia deal was found by Cheapflights users on 9/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:30 pm -
2 stops15h 55m
Sun 10/185:40 pm -
1 stop13h 05m
Deal found 9/3![Iberia logo]()
$570
This Iberia deal was found by Cheapflights users on 9/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:45 am -
2 stops22h 40m
Sat 10/318:35 pm -
1 stop15h 20m
Deal found 9/7![Iberia logo]()
$587
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:55 am -
2 stops18h 50m
Wed 10/2110:55 pm -
1 stop27h 20m
Deal found 9/4![Multiple Airlines logo]()
$551
One-way flights from Bilbao to BostonSearch for one-way flight options from Bilbao to Boston. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from Bilbao to Boston. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This LEVEL deal was found by Cheapflights users on 9/5. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:50 pm -
1 stop28h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![LEVEL logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:20 pm -
2 stops37h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:40 am -
2 stops20h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:25 pm -
1 stop13h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![LEVEL logo]()
$328
This deal was found by Cheapflights users on 9/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:15 pm -
1 stop14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![TAP AIR PORTUGAL logo]()
$430
This oojo deal was found by Cheapflights users on 9/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:40 pm -
2 stops56h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![TAP AIR PORTUGAL logo]()
$722
Find flight deals from Bilbao to Boston
Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to Boston (BOS). 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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $430 (American Airlines) |
One-way from | $254 (LEVEL) |
Popular in | June |
Cheapest in | February |
Average price | $528 |
Cheapflights Fare Finder
Customize your flight search to find flights from Bilbao to Boston 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 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from Bilbao to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Wed 10/21
10:50 pm-9:05 pm
1 stop28h 15m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$254
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Wed 10/21
1:20 pm-9:05 pm
2 stops37h 45m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$277
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Sun 10/18
7:40 am-9:45 pm
2 stops20h 05m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$308
Quickest round-trip
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Sun 10/18
2:25 pm-9:45 pm
1 stop13h 20m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$328
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Thu 10/15
12:15 pm-8:20 pm
1 stop14h 05m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$430
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Thu 1/14
9:15 am-6:31 pm
2 stops15h 16m
Boston Logan Intl
Mon 1/18
8:00 pm-4:55 pm
1 stop14h 55m
$490
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Thu 11/19
6:45 am-1:45 pm
1 stop13h 00m
Boston Logan Intl
Tue 12/1
12:00 pm-11:00 am
2 stops17h 00m
$520
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Thu 11/5
6:45 am-6:34 pm
2 stops17h 49m
Boston Logan Intl
Sun 11/8
2:40 pm-4:10 pm
2 stops19h 30m
$528
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Sun 11/15
6:45 am-11:35 pm
2 stops22h 50m
Boston Logan Intl
Sat 11/21
1:29 pm-12:50 pm
2 stops17h 21m
$530
BilbaoBoston
BIO Bilbao - BOS Boston Logan Intl
BIOBOS
Bilbao
Sat 11/28
6:45 am-10:37 pm
2 stops21h 52m
Boston Logan Intl
Fri 12/4
5:45 am-5:45 pm
2 stops30h 00m
$537
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from Bilbao to Boston
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 Bilbao to Boston in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Bilbao-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Bilbao-Boston flights, Cheapflights users trust FlightHub the most. FlightHub 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 Bilbao-Boston 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 Bilbao to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Bilbao with our price prediction graph.
BIO-BOS
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 Bilbao to Boston
What is the cheapest month to book a flight from Bilbao to Boston?
Currently, February is the cheapest month in which you can book a flight from Bilbao to Boston (average of $482). Flying from Bilbao to Boston in June is currently the most expensive (average of $955). 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.
How much does it cost to fly round-trip from Bilbao to Boston?
Airfare is below average for this route at the moment.
Bilbao to Boston flights typically cost between $515 and $576 in February.The cheapest round-trip price found within the last 5 days was $430 on American Airlines (Feb 1-Feb 16).
Related info for your journey
Find useful and relevant information for your journey from Bilbao to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Concord
Cambridge
Brockton
Seekonk
Dedham
Cranston
Warwick
Pawtucket
Peabody
Auburn
Revere
York Beach
Londonderry
Fitchburg
North Falmouth
Swansea
Chelsea
Braintree
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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