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Bilbao

$372+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap 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 February 13, 2026.

This BusinessClass deal was found by Cheapflights users on 2/11. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:40 pm
DEN
-
BIO
2 stops29h 50m
British Airways
Tue 8/189:35 pm
BIO
-
DEN
2 stops32h 20m
British Airways
Deal found 2/11$608
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
DEN
-
BIO
2 stops19h 50m
Delta
Tue 5/56:45 am
BIO
-
DEN
2 stops23h 19m
Delta
Deal found 2/12$612
This Trip.com deal was found by Cheapflights users on 2/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:15 pm
DEN
-
BIO
1 stop23h 10m
Multiple Airlines
Tue 8/1811:40 am
BIO
-
DEN
1 stop36h 35m
Multiple Airlines
Deal found 2/13$613
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:15 pm
DEN
-
BIO
1 stop23h 10m
Lufthansa
Tue 8/186:40 pm
BIO
-
DEN
1 stop27h 05m
Lufthansa
Deal found 2/9$630
This KLM deal was found by Cheapflights users on 2/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:40 pm
DEN
-
BIO
1 stop20h 20m
KLM
Wed 5/206:45 am
BIO
-
DEN
2 stops18h 50m
KLM
Deal found 2/12$638
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:05 am
DEN
-
BIO
2 stops19h 45m
Delta
Wed 5/206:45 am
BIO
-
DEN
2 stops18h 50m
Delta
Deal found 2/12$643
This KLM deal was found by Cheapflights users on 2/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:40 pm
DEN
-
BIO
1 stop20h 20m
KLM
Wed 8/197:10 am
BIO
-
DEN
1 stop16h 30m
KLM
Deal found 2/12$655
This KAYAK deal was found by Cheapflights users on 2/12. 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.
Tue 5/128:25 pm
DEN
-
BIO
1 stop36h 55m
Turkish Airlines
Wed 5/206:15 pm
BIO
-
DEN
1 stop32h 10m
Turkish Airlines
Deal found 2/12$658
This Finnair deal was found by Cheapflights users on 2/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:41 am
DEN
-
BIO
2 stops28h 24m
Multiple Airlines
Tue 8/186:45 am
BIO
-
DEN
2 stops24h 56m
Multiple Airlines
Deal found 2/10$662
This Rumbo deal was found by Cheapflights users on 2/13. 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.
Sat 2/217:20 pm
DEN
-
BIO
1 stop31h 40m
Turkish Airlines
Fri 3/612:00 pm
BIO
-
DEN
1 stop37h 35m
Turkish Airlines
Deal found 2/13$669
This KAYAK deal was found by Cheapflights users on 2/9. 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.
Thu 8/64:15 pm
DEN
-
BIO
2 stops22h 55m
Lufthansa
Tue 8/186:40 pm
BIO
-
DEN
1 stop27h 05m
Lufthansa
Deal found 2/9$670
This Trip.com deal was found by Cheapflights users on 2/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:05 pm
DEN
-
BIO
1 stop23h 20m
Lufthansa
Tue 5/56:50 am
BIO
-
DEN
1 stop16h 50m
Lufthansa
Deal found 2/12$672

Find 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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$608
(BusinessClass)

One-way from

$372
(Finnair)

Popular in

May

Cheapest in

February

Average price

$573
Provider with most accurate pricing for Denver Intl-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Bilbao flights.
Search Deals
From Denver Intl to Bilbao
Search Deals
One-way flight from Denver Intl to Bilbao
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($142 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 13, 2026.
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

Sat 8/8

4:45 pm-11:15 pm

2 stops22h 30m

Bilbao

Wed 8/19

6:45 am-7:59 am

2 stops33h 14m

$612

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 4/15

6:00 am-9:50 am

2 stops19h 50m

Bilbao

Tue 5/5

6:45 am-10:04 pm

2 stops23h 19m

$612

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 8/8

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Tue 8/18

11:40 am-4:15 pm

1 stop36h 35m

$613

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 8/8

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Tue 8/18

6:40 pm-1:45 pm

1 stop27h 05m

$630

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 5/12

5:40 pm-10:00 pm

1 stop20h 20m

Bilbao

Wed 5/20

6:45 am-5:35 pm

2 stops18h 50m

$638

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 5/12

6:05 am-9:50 am

2 stops19h 45m

Bilbao

Wed 5/20

6:45 am-5:35 pm

2 stops18h 50m

$643

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 8/8

5:40 pm-10:00 pm

1 stop20h 20m

Bilbao

Wed 8/19

7:10 am-3:40 pm

1 stop16h 30m

$655

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 8/9

9:41 am-10:05 pm

2 stops28h 24m

Bilbao

Tue 8/18

6:45 am-11:41 pm

2 stops24h 56m

$662

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 3/11

11:15 am-4:10 pm

2 stops21h 55m

Bilbao

Wed 3/18

7:25 am-7:55 pm

2 stops43h 30m

$679

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Thu 8/6

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Tue 8/18

6:40 pm-1:45 pm

1 stop27h 05m

$682

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Showing 1-10 of 17 results
1
2

Compare providers for flights from Denver 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 Denver to Bilbao in February.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice 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 Denver-Bilbao flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Bilbao flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-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 Denver-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 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, February is the cheapest month in which you can book a flight from Denver to Bilbao (average of $530). Flying from Denver to Bilbao in December is currently the most expensive (average of $1,104). 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.

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 February 13, 2026.
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
9,289 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,289 reviews
United Airlines
7.4
Good
9,289 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,784 reviews
United Airlines
7.4
Good
9,289 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 19h 50m. Fly via Delta, Lufthansa, or KLM 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 $530. Another airline that can offer you cheap pricing is United Airlines. These flights start at 41% 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, February is the cheapest month in which you can book a flight from Denver to Bilbao (average of $530). Flying from Denver to Bilbao in December is currently the most expensive (average of $1,104). 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

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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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$885FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$658Average$871FlexibilityNo cancel feeOn-time69%

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