HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$331+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Bilbao 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 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 July 29, 2025.

Round-trip from

$607
(Gotogate)

One-way from

$331
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$942
From Denver Intl to Bilbao
Search Deals
One-way flight from Denver Intl to Bilbao
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($363 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 29, 2025.

This Gotogate deal was found by Cheapflights users on 7/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:59 pmDEN - BIO
1 stop16h 26mLufthansa
Mon 10/67:10 pmBIO - DEN
1 stop28h 25mLufthansa
Deal found 7/27$607
This Mytrip deal was found by Cheapflights users on 7/27. 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 9/214:15 pmDEN - BIO
2 stops22h 45mMultiple Airlines
Mon 10/67:55 pmBIO - DEN
3 stops28h 29mMultiple Airlines
Deal found 7/27$637
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/105:00 pmDEN - BIO
2 stops16h 50mUnited Airlines
Wed 9/176:45 amBIO - DEN
2 stops19h 33mUnited Airlines
Deal found 7/27$701
This Air Canada deal was found by Cheapflights users on 7/29. 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.
Thu 9/42:01 pmDEN - BIO
2 stops19h 49mAir Canada
Mon 9/156:45 amBIO - DEN
2 stops22h 38mAir Canada
Deal found 7/29$806
This American Airlines deal was found by Cheapflights users on 7/27. 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 9/47:09 amDEN - BIO
2 stops17h 21mAmerican Airlines
Mon 9/156:45 amBIO - DEN
2 stops19h 48mAmerican Airlines
Deal found 7/27$819
This Turkish Airlines deal was found by Cheapflights users on 7/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/97:50 pmDEN - BIO
1 stop31h 15mTurkish Airlines
Thu 8/216:25 pmBIO - DEN
1 stop31h 30mTurkish Airlines
Deal found 7/29$1,008
This Gurufare deal was found by Cheapflights users on 7/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:55 pmDEN - BIO
1 stop13h 35mAer Lingus
Thu 8/216:10 pmBIO - DEN
1 stop31h 49mAer Lingus
Deal found 7/29$1,102
This Iberia deal was found by Cheapflights users on 7/29. 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.
Tue 8/57:18 amDEN - BIO
2 stops25h 37mIberia
Fri 8/226:45 amBIO - DEN
2 stops21h 37mIberia
Deal found 7/29$1,199

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 July 29, 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

Sun 9/21

5:59 pm-6:25 pm

1 stop16h 26m

Bilbao

Mon 10/6

7:10 pm-3:35 pm

1 stop28h 25m

$607

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 9/21

4:15 pm-11:00 pm

2 stops22h 45m

Bilbao

Mon 10/6

7:55 pm-4:24 pm

3 stops28h 29m

$637

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 9/10

5:00 pm-5:50 pm

2 stops16h 50m

Bilbao

Wed 9/17

6:45 am-6:18 pm

2 stops19h 33m

$701

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Thu 9/4

2:01 pm-5:50 pm

2 stops19h 49m

Bilbao

Mon 9/15

6:45 am-9:23 pm

2 stops22h 38m

$806

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Thu 9/4

7:09 am-8:30 am

2 stops17h 21m

Bilbao

Mon 9/15

6:45 am-6:33 pm

2 stops19h 48m

$819

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 8/9

7:50 pm-11:05 am

1 stop31h 15m

Bilbao

Thu 8/21

6:25 pm-5:55 pm

1 stop31h 30m

$1,008

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Fri 8/8

7:55 pm-5:30 pm

1 stop13h 35m

Bilbao

Tue 8/19

6:10 pm-5:59 pm

1 stop31h 49m

$1,533

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Fri 8/8

12:21 pm-3:55 pm

2 stops19h 34m

Bilbao

Fri 8/22

12:45 pm-10:49 pm

2 stops18h 04m

$2,417

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 11/15

8:02 pm-10:55 pm

3 stops42h 53m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 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 $1,135). 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 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 July 29, 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 July 29, 2025.
Get a feel of what it's like to fly with United Airlines, Turkish Airlines, and American Airlines 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
8,896 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

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
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

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??
Turkish Airlines
7.3
Good
3,925 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

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??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

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??
Air Canada
7.1
Good
9,826 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

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??
Aer Lingus
7.1
Good
1,190 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

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.

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

    Cheapflights users have booked flights from Denver to Bilbao round-trip from $607. Other airlines that can offer you cheap pricing are United Airlines, from $701, and Air Canada, from $806. These flights start at 37% 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 $1,135). 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

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.

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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$690Average$965FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$714Average$1,114FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.