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Bilbao

$296+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$965
(SWISS)

One-way from

$296
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$975
Provider with most accurate pricing for Denver Intl-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Bilbao flights.
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From Colorado to Bilbao
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One-way flight from Colorado to Bilbao
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Highest demand for flights based on searches. 23% potential increase in price ($305 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 17, 2025.

This KAYAK deal was found by Cheapflights users on 4/15. 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 9/304:15 pmDEN - BIO
1 stop23h 10mLufthansa
Fri 10/106:45 amBIO - DEN
2 stops25h 09mLufthansa
Deal found 4/15$608
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 9/304:15 pmDEN - BIO
1 stop23h 10mUnited Airlines
Fri 10/107:15 amBIO - DEN
1 stop15h 05mUnited Airlines
Deal found 4/15$665
This Delta deal was found by Cheapflights users on 4/16. 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 8/267:00 amDEN - BIO
2 stops20h 00mDelta
Fri 9/196:50 amBIO - DEN
2 stops19h 32mDelta
Deal found 4/16$707
This FlightHub deal was found by Cheapflights users on 4/16. 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.
Tue 9/24:15 pmDEN - BIO
1 stop17h 35mMultiple Airlines
Tue 9/166:45 amBIO - DEN
2 stops19h 33mMultiple Airlines
Deal found 4/16$713
This Air Canada deal was found by Cheapflights users on 4/16. 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.
Tue 9/211:25 amDEN - BIO
2 stops22h 25mAir Canada
Tue 9/166:45 amBIO - DEN
2 stops17h 48mAir Canada
Deal found 4/16$721
This American Airlines deal was found by Cheapflights users on 4/16. 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 8/242:51 pmDEN - BIO
2 stops18h 04mAmerican Airlines
Tue 9/21:30 pmBIO - DEN
2 stops18h 02mAmerican Airlines
Deal found 4/16$813
This Gurufare deal was found by Cheapflights users on 4/16. 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.
Tue 8/262:06 pmDEN - BIO
2 stops19h 24mAer Lingus
Fri 9/196:10 pmBIO - DEN
1 stop31h 49mAer Lingus
Deal found 4/16$815
This FlightHub deal was found by Cheapflights users on 4/17. 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.
Tue 8/267:50 pmDEN - BIO
1 stop37h 35mTurkish Airlines
Fri 9/1912:05 pmBIO - DEN
1 stop37h 50mTurkish Airlines
Deal found 4/17$816
This Gurufare deal was found by Cheapflights users on 4/17. 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.
Fri 10/2410:28 amDEN - BIO
2 stops18h 17mBritish Airways
Sun 11/21:35 pmBIO - DEN
2 stops18h 02mBritish Airways
Deal found 4/17$836
This Iberia deal was found by Cheapflights users on 4/15. 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 7/2910:40 amDEN - BIO
2 stops22h 15mIberia
Sun 8/109:35 pmBIO - DEN
2 stops33h 57mIberia
Deal found 4/15$922
This SWISS deal was found by Cheapflights users on 4/16. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/185:50 pmDEN - BIO
1 stop16h 30mSWISS
Fri 5/308:55 amBIO - DEN
1 stop15h 25mSWISS
Deal found 4/16$965
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/17. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:50 amDEN - BIO
2 stops19h 50mTAP AIR PORTUGAL
Fri 9/1912:15 pmBIO - DEN
3 stops28h 01mTAP AIR PORTUGAL
Deal found 4/17$1,989

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 April 17, 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

Tue 9/30

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Fri 10/10

6:45 am-11:54 pm

2 stops25h 09m

$608

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 9/30

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Fri 10/10

7:15 am-2:20 pm

1 stop15h 05m

$665

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 8/26

7:00 am-11:00 am

2 stops20h 00m

Bilbao

Fri 9/19

6:50 am-6:22 pm

2 stops19h 32m

$707

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 9/2

4:15 pm-5:50 pm

1 stop17h 35m

Bilbao

Tue 9/16

6:45 am-6:18 pm

2 stops19h 33m

$713

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 9/2

11:25 am-5:50 pm

2 stops22h 25m

Bilbao

Tue 9/16

6:45 am-4:33 pm

2 stops17h 48m

$721

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 8/24

2:51 pm-4:55 pm

2 stops18h 04m

Bilbao

Tue 9/2

1:30 pm-11:32 pm

2 stops18h 02m

$813

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 8/26

2:06 pm-5:30 pm

2 stops19h 24m

Bilbao

Fri 9/19

6:10 pm-5:59 pm

1 stop31h 49m

$815

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 8/26

7:50 pm-5:25 pm

1 stop37h 35m

Bilbao

Fri 9/19

12:05 pm-5:55 pm

1 stop37h 50m

$816

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 7/29

10:40 am-4:55 pm

2 stops22h 15m

Bilbao

Sun 8/10

9:35 pm-11:32 pm

2 stops33h 57m

$922

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 5/18

5:50 pm-6:20 pm

1 stop16h 30m

Bilbao

Fri 5/30

8:55 am-4:20 pm

1 stop15h 25m

$965

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 16 results
1
2

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 $1,178). 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 April 17, 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.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 April 17, 2025.
SWISS
7.5
Good
1,580 reviews

Boarding

7.6

Comfort

7.3

Crew

8.2

Entertainment

6.7

Food

7.0

Overall

7.5

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
SWISS
7.5
Good
1,580 reviews
SWISS
7.5
Good
1,580 reviews

Boarding

7.6

Comfort

7.3

Crew

8.2

Entertainment

6.7

Food

7.0

Overall

7.5

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
United Airlines
7.4
Good
8,667 reviews
SWISS
7.5
Good
1,580 reviews

Boarding

7.6

Comfort

7.3

Crew

8.2

Entertainment

6.7

Food

7.0

Overall

7.5

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
Turkish Airlines
7.3
Good
3,769 reviews
SWISS
7.5
Good
1,580 reviews

Boarding

7.6

Comfort

7.3

Crew

8.2

Entertainment

6.7

Food

7.0

Overall

7.5

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
Air Canada
7.0
Good
9,143 reviews
SWISS
7.5
Good
1,580 reviews

Boarding

7.6

Comfort

7.3

Crew

8.2

Entertainment

6.7

Food

7.0

Overall

7.5

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
Aer Lingus
7.0
Good
1,063 reviews
SWISS
7.5
Good
1,580 reviews

Boarding

7.6

Comfort

7.3

Crew

8.2

Entertainment

6.7

Food

7.0

Overall

7.5

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

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.

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

    The cheapest airlines for a one-way flight from Colorado to Bilbao are Aer Lingus ($501), SWISS ($662), and Turkish Airlines ($3,218).

  • 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 $1,178). 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 Colorado to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$690Average$1,149FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$899Average$1,114FlexibilityNo cancel feeOn-time76%

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