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Bilbao

$266+ Cheap flights from Denver (DEN) 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Denver to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 September 11, 2025.

Round-trip from

$554
(Finnair)

One-way from

$266
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$868
From Denver Intl to Bilbao
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One-way flight from Denver Intl to Bilbao
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Highest demand for flights based on searches. 24% potential increase in price ($324 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($59 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Denver to Bilbao

Cheapest flights from Denver to Bilbao
Explore the most affordable flight options available from Denver to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/9. 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.
Sun 10/59:46 amDEN - BIO
2 stops18h 59mAmerican Airlines
Thu 11/206:45 amBIO - DEN
2 stops23h 37mAmerican Airlines
Deal found 9/9$554
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 10/54:15 pmDEN - BIO
1 stop17h 35mLufthansa
Thu 11/206:45 amBIO - DEN
1 stop17h 15mLufthansa
Deal found 9/9$584
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Wed 10/225:59 pmDEN - BIO
1 stop20h 26mLufthansa
Tue 11/116:45 amBIO - DEN
1 stop17h 15mLufthansa
Deal found 9/10$588
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/298:20 pmDEN - BIO
1 stop19h 05mUnited Airlines
Tue 10/286:45 amBIO - DEN
1 stop17h 15mUnited Airlines
Deal found 9/9$591
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Mon 10/611:15 amDEN - BIO
2 stops23h 30mAir Canada
Fri 11/216:45 amBIO - DEN
2 stops34h 08mAir Canada
Deal found 9/9$595
This KAYAK deal was found by Cheapflights users on 9/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/294:15 pmDEN - BIO
1 stop23h 10mLufthansa
Tue 10/286:45 amBIO - DEN
1 stop17h 15mLufthansa
Deal found 9/9$596
This Air Canada deal was found by Cheapflights users on 9/10. 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.
Mon 10/205:30 pmDEN - BIO
2 stops33h 35mAir Canada
Fri 11/146:45 amBIO - DEN
2 stops37h 52mAir Canada
Deal found 9/10$598
This KAYAK deal was found by Cheapflights users on 9/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:59 pmDEN - BIO
1 stop20h 26mLufthansa
Thu 11/136:45 amBIO - DEN
1 stop17h 15mLufthansa
Deal found 9/10$600
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/284:15 pmDEN - BIO
1 stop23h 10mUnited Airlines
Tue 10/286:45 amBIO - DEN
2 stops22h 04mUnited Airlines
Deal found 9/9$601
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/288:20 pmDEN - BIO
1 stop19h 05mUnited Airlines
Wed 10/297:25 amBIO - DEN
1 stop19h 30mUnited Airlines
Deal found 9/9$602
This Air Canada deal was found by Cheapflights users on 9/9. 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 9/275:36 pmDEN - BIO
2 stops38h 29mAir Canada
Tue 10/286:45 amBIO - DEN
2 stops33h 08mAir Canada
Deal found 9/9$603
This Air Canada deal was found by Cheapflights users on 9/10. 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.
Mon 10/205:36 pmDEN - BIO
2 stops33h 29mAir Canada
Wed 11/1212:50 pmBIO - DEN
2 stops29h 33mAir Canada
Deal found 9/10$604

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 September 11, 2025.
Use the filters below to find and compare flights from Denver to Bilbao that are best for you.

Fly from

Denver

Fly to

Bilbao

Route

Depart

Return

Price

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 10/21

12:36 pm-6:50 pm

2 stops22h 14m

Bilbao

Tue 11/11

6:45 am-9:48 pm

2 stops23h 03m

$554

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 10/22

2:48 pm-11:15 pm

2 stops24h 27m

Bilbao

Tue 11/11

6:45 am-9:48 pm

2 stops23h 03m

$554

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 9/28

4:15 pm-5:50 pm

1 stop17h 35m

Bilbao

Tue 10/28

6:45 am-5:00 pm

1 stop17h 15m

$591

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 10/21

11:15 am-6:20 pm

2 stops23h 05m

Bilbao

Thu 11/13

6:45 am-4:45 pm

2 stops42h 00m

$595

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 10/20

5:36 pm-11:05 am

2 stops33h 29m

Bilbao

Tue 11/11

6:45 am-4:45 pm

2 stops42h 00m

$598

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 10/20

5:59 pm-10:25 pm

1 stop20h 26m

Bilbao

Thu 11/13

6:45 am-4:00 pm

1 stop17h 15m

$600

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 9/29

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Fri 10/31

6:45 am-9:49 pm

2 stops22h 04m

$601

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 10/21

4:45 pm-11:25 pm

2 stops22h 40m

Bilbao

Thu 11/13

6:45 am-4:00 pm

1 stop17h 15m

$601

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 9/29

4:15 pm-2:45 pm

1 stop14h 30m

Bilbao

Thu 10/30

6:45 am-9:49 pm

2 stops22h 04m

$601

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 9/30

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Tue 10/28

6:45 am-9:49 pm

2 stops22h 04m

$601

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
2

Best time to book a flight from Denver to Bilbao

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

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

Find hourly flight availability from Denver 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 September 11, 2025.

One of the essential ways to save on airfare from Denver to Bilbao is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 31% 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 September 11, 2025.
Get a feel of what it's like to fly with United Airlines and Lufthansa from Denver to Bilbao by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,409 reviews
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Denver 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 Denver to Bilbao?

    There are many flights that can get you from Denver to Bilbao in 17h 35m. Fly via United Airlines or Air Canada to get the fastest option. Airlines will cover a distance of 4902 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Denver to Bilbao round-trip from $686. Another airline that can offer you cheap pricing is Lufthansa. These flights start at 32% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Bilbao (average of $541). Flying from Denver to Bilbao in June is currently the most expensive (average of $1,136). 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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Alternative routes for Denver to Bilbao

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

Top 2 airlines flying from Denver to Bilbao

Discover the top 2 airlines that operate flights from Denver 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$686Average$965FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$714Average$899FlexibilityNo cancel feeOn-time76%

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