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Bilbao

$533+ Cheap flights from Boise (BOI) to Bilbao (BIO)

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BIO
Nov 6 — Nov 131
Thu 11/6
Thu 11/13
1 adult, Economy
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Find flight deals from Boise to Bilbao

Cheapest flights from Boise to Bilbao
Explore the most affordable flight options available from Boise to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 7, 2025.

This United Airlines deal was found by Cheapflights users on 10/7. 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.
Wed 11/55:17 pmBOI - BIO
2 stops20h 38mUnited Airlines
Fri 11/1412:50 pmBIO - BOI
3 stops32h 54mUnited Airlines
Deal found 10/7$533
This American Airlines deal was found by Cheapflights users on 10/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:00 amBOI - BIO
2 stops22h 00mMultiple Airlines
Fri 11/149:15 amBIO - BOI
3 stops21h 05mMultiple Airlines
Deal found 10/6$2,911
This American Airlines deal was found by Cheapflights users on 10/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/157:00 amBOI - BIO
2 stops21h 50mMultiple Airlines
Sun 11/239:15 amBIO - BOI
3 stops19h 47mMultiple Airlines
Deal found 10/5$3,013

Cheap flight deals from Boise to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 October 7, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$533
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$619
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Bilbao flights.
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From Boise Air Term. Gowen Fld to Bilbao
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($377 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($61 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 October 7, 2025.
Use the filters below to find and compare flights from Boise to Bilbao that are best for you.

Fly from

Boise

Fly to

Bilbao

Route

Depart

Return

Price

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Sat 11/15

10:39 am-11:20 pm

2 stops28h 41m

Bilbao

Sun 11/23

6:45 am-11:28 pm

2 stops24h 43m

$533

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/5

5:17 pm-9:55 pm

2 stops20h 38m

Bilbao

Thu 11/13

12:50 pm-1:44 pm

3 stops32h 54m

$533

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/5

2:11 pm-9:55 pm

2 stops23h 44m

Bilbao

Fri 11/14

12:50 pm-1:44 pm

3 stops32h 54m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/5

Compare providers for flights from Boise 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 Boise to Bilbao in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 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 Boise-Bilbao flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Bilbao flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Bilbao 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 Boise-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 Boise to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Boise 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 Boise to Bilbao

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

Currently, November is the cheapest month in which you can book a flight from Boise to Bilbao (average of $569). Flying from Boise to Bilbao in May is currently the most expensive (average of $1,295). 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 BOI to BIO?

Find hourly flight availability from Boise 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 October 7, 2025.

One of the essential ways to save on airfare from Boise to Bilbao is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 62% on airfare.

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 October 7, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United Airlines from Boise to Bilbao to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.7
Good
1,396 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,957 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • How long is the flight from Boise to Bilbao?

    Airlines like United Airlines fly from Boise to Bilbao in about 28h 41m. The time it takes to get you to your destination can typically vary by up to . Boise and Bilbao are separated by a distance of 5157 mi.

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

    Currently priced at $570, United Airlines will fly you from Boise to Bilbao and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and KLM - these airlines can fly you to your destination from $617 and $664, respectively. United Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise 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 Boise to Bilbao?

    Currently, November is the cheapest month in which you can book a flight from Boise to Bilbao (average of $569). Flying from Boise to Bilbao in May is currently the most expensive (average of $1,295). 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

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Top 3 airlines flying from Boise to Bilbao

Discover the top 3 airlines that operate flights from Boise 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 October 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$570Average$759FlexibilityNo cancel feeOn-time69%
DeltaCheapest$617Average$1,318FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$664Average$1,317FlexibilityNo cancel feeOn-time75%

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