DEN - BIO

$373 Find Cheap Flights from Denver to Bilbao

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Bilbao departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bilbao

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Bilbao, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Bilbao, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$584
Overall average: $693
Turkish Airlines
Sat 4/18Sat 4/25
DEN - BIO • 1 stop
Cheapest one-way
$373
Multiple Airlines
Sun 5/3
DEN - BIO • 2 stops
Top airlines
Cheapest • from $584 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Denver and Bilbao. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $674 (round-trip)
Shortest trip • 13h 25m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bilbao!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Bilbao (DEN-BIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Bilbao that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Bilbao

Sat, Apr 18 - Sat, Apr 25
Turkish Airlines Logo
8:25 pm - 11:10 am
DEN
-
BIO
30h 45m
1 stop
Turkish Airlines Logo
12:10 pm - 6:25 pm
BIO
-
DEN
38h 15m
1 stop
$584Turkish Airlines
Tue, May 5 - Fri, May 15
Turkish Airlines Logo
8:25 pm - 5:20 pm
DEN
-
BIO
36h 55m
1 stop
Turkish Airlines Logo
12:10 pm - 6:25 pm
BIO
-
DEN
38h 15m
1 stop
$656Turkish Airlines
Tue, May 5 - Fri, May 15
Turkish Airlines Logo
8:25 pm - 5:20 pm
DEN
-
BIO
36h 55m
1 stop
Turkish Airlines Logo
12:10 pm - 6:25 pm
BIO
-
DEN
38h 15m
1 stop
$678Turkish Airlines
Sat, Apr 18 - Sat, Apr 25
Turkish Airlines Logo
8:25 pm - 11:10 am
DEN
-
BIO
30h 45m
1 stop
Turkish Airlines Logo
12:10 pm - 6:25 pm
BIO
-
DEN
38h 15m
1 stop
$683Turkish Airlines
Sat, Apr 18 - Sat, Apr 25
Turkish Airlines Logo
3:20 pm - 11:10 am
DEN
-
BIO
35h 50m
2 stops
Turkish Airlines Logo
12:10 pm - 6:25 pm
BIO
-
DEN
38h 15m
1 stop
$710Turkish Airlines
Tue, May 5 - Fri, May 15
KLM Logo
4:34 pm - 4:30 pm
DEN
-
BIO
15h 56m
2 stops
KLM Logo
10:30 am - 3:40 pm
BIO
-
DEN
13h 10m
1 stop
$733KLM
Tue, May 5 - Fri, May 15
KLM Logo
6:00 pm - 4:30 pm
DEN
-
BIO
14h 30m
2 stops
KLM Logo
6:45 am - 3:36 pm
BIO
-
DEN
16h 51m
2 stops
$735KLM
Mon, May 4 - Fri, May 15
Lufthansa Logo
4:05 pm - 5:55 pm
DEN
-
BIO
17h 50m
1 stop
Lufthansa Logo
2:00 pm - 11:50 pm
BIO
-
DEN
17h 50m
2 stops
$736Lufthansa
Mon, May 4 - Fri, May 15
Lufthansa Logo
4:05 pm - 5:55 pm
DEN
-
BIO
17h 50m
1 stop
Lufthansa Logo
11:55 am - 12:44 am
BIO
-
DEN
20h 49m
2 stops
$737Lufthansa
Mon, May 4 - Fri, May 15
Lufthansa Logo
3:52 pm - 5:55 pm
DEN
-
BIO
18h 03m
2 stops
Lufthansa Logo
2:00 pm - 11:50 pm
BIO
-
DEN
17h 50m
2 stops
$740Lufthansa
Booking Insights

KAYAK's insights & trends for Denver to Bilbao flights

Get data-powered insights and trends into flights from Denver to Bilbao to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Denver to Bilbao?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Bilbao, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Bilbao is February, where tickets cost $573 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,380 and $1,086 respectively.

Good to know

Low seasonJanuary
Cheapest flight$373
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Denver to Bilbao

When to book flights from Denver to Bilbao

Are your dates flexible? Find out the best times to travel from Denver to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Bilbao

  • What is the cheapest flight from Denver to Bilbao?

    In the last 3 days, the lowest price for a flight from Denver to Bilbao was $373 for a one-way ticket and $584 for a round-trip.

  • Do I need a passport to fly between Denver and Bilbao?

    A passport is required to fly from Denver to Bilbao.

  • Which airports will I be using when flying from Denver to Bilbao?

    Denver and Bilbao are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at Bilbao.

  • Which aircraft models fly most regularly from Denver to Bilbao?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Bilbao?

    Star Alliance is the only airline alliance operating flights between Denver and Bilbao.

  • Which is the best airline for flights from Denver to Bilbao, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Denver to Bilbao are United Airlines and Lufthansa. With an average price for the route of $870 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $818 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Denver to Bilbao?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Bilbao.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Bilbao?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Bilbao?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bilbao with an airline and back to Denver with another airline. Booking your flights between Denver and BIO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Bilbao?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bilbao from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Denver to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Denver to Bilbao. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Bilbao? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9451 reviews
8.1Crew
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
Airline reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

10.0 ExcellentAnonymous, Feb 2026
DEN - RSW
Read more United Airlines reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Flight was good but there are way to many announcements for credit cards etc.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Everything you need to know for your flight from Denver to Bilbao

Information on your arrival and departure airports