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Bilbao

$613+ Cheap flights from Colorado 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BIO
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$613
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,472
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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Highest demand for flights based on searches. 24% potential increase in price ($323 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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 10/106:45 amBIO - DEN
2 stops23h 14mUnited Airlines
Deal found 4/30$613
This Travelocity deal was found by Cheapflights users on 4/29. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:53 pmDEN - BIO
2 stops20h 02mIberia
Mon 10/69:35 pmBIO - DEN
2 stops30h 22mIberia
Deal found 4/29$623
This Finnair deal was found by Cheapflights users on 4/30. 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.
Tue 9/22:45 pmDEN - BIO
2 stops24h 30mMultiple Airlines
Tue 9/166:45 amBIO - DEN
2 stops23h 42mMultiple Airlines
Deal found 4/30$638
This Air Canada deal was found by Cheapflights users on 4/30. 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.
Sun 8/315:40 pmDEN - BIO
2 stops35h 40mAir Canada
Wed 9/106:45 amBIO - DEN
2 stops35h 33mAir Canada
Deal found 4/30$673
This FlightHub deal was found by Cheapflights users on 4/30. 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 35mLufthansa
Tue 9/167:15 amBIO - DEN
1 stop14h 30mLufthansa
Deal found 4/30$679
This SWISS deal was found by Cheapflights users on 4/30. 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 8/311:25 pmDEN - BIO
2 stops46h 50mSWISS
Tue 9/99:00 pmBIO - DEN
1 stop27h 20mSWISS
Deal found 4/30$691
This Delta deal was found by Cheapflights users on 4/30. 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 7/2910:46 amDEN - BIO
2 stops16h 14mDelta
Tue 9/27:10 amBIO - DEN
1 stop16h 20mDelta
Deal found 4/30$719
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Sun 8/317:50 pmDEN - BIO
1 stop31h 15mTurkish Airlines
Wed 9/106:25 pmBIO - DEN
1 stop31h 30mTurkish Airlines
Deal found 4/30$743
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 8/265:06 pmDEN - BIO
2 stops19h 44mAmerican Airlines
Fri 9/191:30 pmBIO - DEN
2 stops18h 05mAmerican Airlines
Deal found 4/30$848
This Air France deal was found by Cheapflights users on 4/30. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:30 amDEN - BIO
2 stops16h 25mAir France
Thu 9/117:10 amBIO - DEN
1 stop16h 20mAir France
Deal found 4/30$923
This KLM deal was found by Cheapflights users on 4/30. 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 6/35:40 pmDEN - BIO
1 stop15h 00mKLM
Tue 6/177:10 amBIO - DEN
1 stop16h 20mKLM
Deal found 4/30$1,094
This Air Europa deal was found by Cheapflights users on 4/30. 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 Europa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/312:01 pmDEN - BIO
2 stops19h 54mAir Europa
Sat 5/108:20 amBIO - DEN
2 stops20h 19mAir Europa
Deal found 4/30$1,795

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 May 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

Tue 9/30

4:15 pm-11:25 pm

1 stop23h 10m

Bilbao

Fri 10/10

6:45 am-9:59 pm

2 stops23h 14m

$613

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Fri 9/26

12:53 pm-4:55 pm

2 stops20h 02m

Bilbao

Mon 10/6

9:35 pm-7:57 pm

2 stops30h 22m

$623

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 9/2

2:45 pm-11:15 pm

2 stops24h 30m

Bilbao

Tue 9/16

6:45 am-10:27 pm

2 stops23h 42m

$638

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 8/31

5:40 pm-1:20 pm

2 stops35h 40m

Bilbao

Wed 9/10

6:45 am-10:18 am

2 stops35h 33m

$673

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 9/2

4:15 pm-5:50 pm

1 stop17h 35m

Bilbao

Tue 9/16

7:15 am-1:45 pm

1 stop14h 30m

$679

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 8/31

1:25 pm-8:15 pm

2 stops46h 50m

Bilbao

Tue 9/9

9:00 pm-4:20 pm

1 stop27h 20m

$691

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 7/29

10:46 am-11:00 am

2 stops16h 14m

Bilbao

Tue 9/2

7:10 am-3:30 pm

1 stop16h 20m

$719

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sun 8/31

7:50 pm-11:05 am

1 stop31h 15m

Bilbao

Wed 9/10

6:25 pm-5:55 pm

1 stop31h 30m

$743

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Tue 8/26

5:06 pm-8:50 pm

2 stops19h 44m

Bilbao

Fri 9/19

1:30 pm-11:35 pm

2 stops18h 05m

$848

DenverBilbao

DEN - BIO

DENBIO

Denver Intl

Sat 8/30

10:30 am-10:55 am

2 stops16h 25m

Bilbao

Thu 9/11

7:10 am-3:30 pm

1 stop16h 20m

$923

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 12 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 May 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.

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 May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 $1,178). 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$690Average$1,167FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$775Average$1,114FlexibilityNo cancel feeOn-time76%

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