HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$382+ Cheap flights from Colorado 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado 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 Colorado to Bilbao

Keep the following information in mind while searching for Colorado to Bilbao flight deals. Data was last updated August 1, 2025.

Round-trip from

$604
(Iberia)

One-way from

$382
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$758
From Colorado to Bilbao
Search Deals
One-way flight from Colorado 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 August 2025
Search Deals

Find flight deals from Colorado to Bilbao

Cheapest flights from Colorado to Bilbao
Explore the most affordable flight options available from Colorado to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Iberia deal was found by Cheapflights users on 7/31. 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.
Sun 11/99:11 amDEN - BIO
2 stops23h 44mIberia
Thu 11/206:45 amBIO - DEN
2 stops21h 28mIberia
Deal found 7/31$604
This Lufthansa deal was found by Cheapflights users on 7/31. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/54:20 pmDEN - BIO
1 stop17h 45mLufthansa
Tue 11/186:40 amBIO - DEN
1 stop17h 20mLufthansa
Deal found 7/31$690
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/205:37 pmDEN - BIO
2 stops35h 48mUnited Airlines
Fri 10/36:45 amBIO - DEN
1 stop16h 50mUnited Airlines
Deal found 7/31$701
This Gotogate deal was found by Cheapflights users on 7/31. 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 11/95:45 pmDEN - BIO
1 stop14h 55mMultiple Airlines
Sun 11/237:25 amBIO - DEN
2 stops44h 30mMultiple Airlines
Deal found 7/31$738
This Delta deal was found by Cheapflights users on 7/31. 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.
Mon 12/17:00 amDEN - BIO
2 stops20h 20mDelta
Fri 12/127:25 amBIO - DEN
2 stops23h 21mDelta
Deal found 7/31$745
This Ovago deal was found by Cheapflights users on 8/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:50 pmDEN - BIO
1 stop31h 15mTurkish Airlines
Thu 9/186:25 pmBIO - DEN
1 stop31h 30mTurkish Airlines
Deal found 8/1$756

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 August 1, 2025.
Use the filters below to find and compare flights from Colorado to Bilbao that are best for you.

Fly from

Colorado

Fly to

Bilbao

Route

Depart

Return

Price

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 11/9

9:11 am-4:55 pm

2 stops23h 44m

Bilbao

Thu 11/20

6:45 am-8:13 pm

2 stops21h 28m

$604

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 1/13

10:31 am-11:15 pm

2 stops28h 44m

Bilbao

Fri 1/23

6:45 am-8:01 pm

2 stops21h 16m

$612

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Wed 11/5

4:20 pm-6:05 pm

1 stop17h 45m

Bilbao

Tue 11/18

6:40 am-4:00 pm

1 stop17h 20m

$690

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 1/13

4:20 pm-11:05 pm

1 stop22h 45m

Bilbao

Fri 1/23

6:40 am-1:40 pm

1 stop15h 00m

$691

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Mon 12/1

7:00 am-11:20 am

2 stops20h 20m

Bilbao

Fri 12/12

7:25 am-10:46 pm

2 stops23h 21m

$745

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Thu 9/4

7:50 pm-11:05 am

1 stop31h 15m

Bilbao

Thu 9/18

6:25 pm-5:55 pm

1 stop31h 30m

$756

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Fri 9/12

10:55 pm-8:05 am

2 stops49h 10m

$382

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Fri 9/12

7:55 pm-5:30 pm

1 stop13h 35m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Colorado to Bilbao

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Bilbao (average of $541). Flying from Colorado 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 CO to BIO?

Find hourly flight availability from Colorado 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 August 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Bilbao as you normally would.

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 August 1, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Turkish Airlines from Colorado to Bilbao by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

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
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

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
8,904 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

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!
Turkish Airlines
7.3
Good
3,935 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

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!
Aer Lingus
7.1
Good
1,192 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

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!
Iberia
7.0
Good
2,862 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

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 Colorado to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Bilbao from Colorado?

    Located just 3.0 mi from the city center, Bilbao (BIO) is the airport most travelers will use when flying to Bilbao from Colorado.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Bilbao (average of $541). Flying from Colorado 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 Colorado to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Bilbao flights
John F Kennedy Intl to Bilbao flights
LaGuardia to Bilbao flights
John F Kennedy Intl to San Sebastian flights
Dulles Intl to Bilbao flights
San Francisco to Bilbao flights
Boston to Bilbao flights
Newark to San Sebastian flights
Reagan-National to Bilbao flights
Seattle to Bilbao flights
Los Angeles to Bilbao flights
Boston to San Sebastian flights
Baltimore to Bilbao flights
Cincinnati to Bilbao flights
Miami to San Sebastian flights
Miami to Bilbao flights
Los Angeles to San Sebastian flights
Boise to Bilbao flights
Dallas/Fort Worth to Bilbao flights
San Jose to Bilbao flights
Dulles Intl to San Sebastian flights
LaGuardia to San Sebastian flights
Philadelphia to Bilbao flights
O'Hare Intl to Bilbao flights
Salt Lake City to Bilbao flights
Philadelphia to San Sebastian flights
Atlanta to Bilbao flights
Reagan-National to San Sebastian flights
Atlanta to San Sebastian flights
Raleigh to Bilbao flights
San Francisco to San Sebastian flights
Hobby to Bilbao flights
O'Hare Intl to San Sebastian flights
New Orleans to San Sebastian flights
Love Field to Bilbao flights
Denver to Bilbao flights
Ontario to San Sebastian flights
Austin to Bilbao flights
Charlotte to Bilbao flights
Ontario to Bilbao flights
Baltimore to San Sebastian flights
Seattle to San Sebastian flights
Indianapolis to Bilbao flights
Orlando to Bilbao flights
George Bush Intcntl to Bilbao flights
Charlotte to San Sebastian flights
Midway to Bilbao flights

Top 2 airlines flying from Colorado to Bilbao

Discover the top 2 airlines that operate flights from Colorado 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 August 1, 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.