HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$588+ Cheap flights from Denver (DEN) 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
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.

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 October 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/27. 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.
Mon 12/111:15 amDEN - BIO
2 stops19h 20mMultiple Airlines
Mon 12/157:50 pmBIO - DEN
2 stops28h 10mMultiple Airlines
Deal found 10/27$588
This lol.travel deal was found by Cheapflights users on 10/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:20 pmDEN - BIO
1 stop22h 45mLufthansa
Mon 12/156:50 pmBIO - DEN
1 stop27h 45mLufthansa
Deal found 10/27$609
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sat 11/88:30 pmDEN - BIO
2 stops35h 40mUnited Airlines
Sat 11/1512:50 pmBIO - DEN
2 stops39h 05mUnited Airlines
Deal found 10/26$705
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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.
Sat 11/85:45 pmDEN - BIO
1 stop14h 55mLufthansa
Sat 11/156:45 amBIO - DEN
2 stops20h 44mLufthansa
Deal found 10/26$727
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Fri 12/121:25 pmDEN - BIO
2 stops25h 55mUnited Airlines
Tue 12/167:40 amBIO - DEN
1 stop14h 55mUnited Airlines
Deal found 10/26$756

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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$588
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$863
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
Highest demand for flights based on searches. 27% potential increase in price ($370 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 October 2025
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 October 28, 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

Mon 12/1

11:15 am-2:35 pm

2 stops19h 20m

Bilbao

Mon 12/15

7:50 pm-4:00 pm

2 stops28h 10m

$588

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 2/16

11:15 am-12:50 pm

2 stops17h 35m

Bilbao

Mon 2/23

12:50 pm-4:00 pm

1 stop35h 10m

$591

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 12/1

4:20 pm-11:05 pm

1 stop22h 45m

Bilbao

Mon 12/15

6:50 pm-2:35 pm

1 stop27h 45m

$609

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 3/4

4:05 pm-9:55 pm

2 stops21h 50m

Bilbao

Sun 3/8

6:45 am-4:00 pm

1 stop17h 15m

$616

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 3/4

8:20 pm-9:55 pm

1 stop17h 35m

Bilbao

Sun 3/8

6:45 am-1:40 pm

1 stop14h 55m

$619

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Fri 3/13

5:20 pm-11:20 pm

1 stop23h 00m

Bilbao

Fri 3/20

7:25 am-3:35 pm

1 stop15h 10m

$622

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 3/14

5:20 pm-11:20 pm

1 stop23h 00m

Bilbao

Sat 3/21

6:45 am-10:05 am

2 stops34h 20m

$687

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 2/16

5:45 pm-12:05 pm

1 stop34h 20m

Bilbao

Mon 2/23

12:50 pm-4:00 pm

1 stop35h 10m

$709

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 1/4

5:30 pm-5:55 pm

2 stops40h 25m

$629

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 1/4

11:34 am-11:30 am

2 stops15h 56m

$664

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 11 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 October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Bilbao flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $1,244). 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 October 28, 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 30% 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 28, 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
9,001 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,001 reviews
United Airlines
7.4
Good
9,001 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,535 reviews
United Airlines
7.4
Good
9,001 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 22h 45m. Fly via Lufthansa to get the fastest option. Airlines will cover a distance of 4902 mi.

  • 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 45% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Denver to Bilbao one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $629. However, be on the lookout for offers from KLM and United Airlines, as they are both options that can get you from Denver to Bilbao for a low price.

  • 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 $1,244). 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$885FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$647Average$1,028FlexibilityNo cancel feeOn-time69%

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.