$326 Find Cheap Flights from Barcelona to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Barcelona to Colorado departing on 4/21. 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 Colorado

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Barcelona to Colorado, 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 Barcelona to Colorado, as well as popular online travel agencies
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Cheap Flights from Barcelona to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver2 stops$615
Aspen
Aspen2 stops$805
Denver
Denver2 stops$615
Aspen
Aspen2 stops$805

Book Cheap Barcelona to Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Barcelona to Colorado 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 Barcelona to Colorado

Wed, Apr 8 - Sun, May 10
Multiple Airlines Logo
4:30 pm - 11:09 pm
BCN
-
DEN
38h 39m
2 stops
Multiple Airlines Logo
4:40 pm - 2:45 pm
DEN
-
BCN
14h 05m
1 stop
$615Multiple Airlines
Tue, Apr 7 - Sun, May 10
Multiple Airlines Logo
6:05 am - 11:09 pm
BCN
-
DEN
25h 04m
2 stops
Multiple Airlines Logo
4:40 pm - 2:45 pm
DEN
-
BCN
14h 05m
1 stop
$632Multiple Airlines
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
3:30 pm - 9:40 am
BCN
-
DEN
26h 10m
1 stop
Multiple Airlines Logo
6:00 am - 1:00 pm
DEN
-
BCN
23h 00m
2 stops
$636Multiple Airlines
Thu, Mar 12 - Mon, Mar 16
United Airlines Logo
9:55 am - 8:42 pm
BCN
-
ASE
17h 47m
2 stops
United Airlines Logo
6:28 pm - 8:20 am
ASE
-
BCN
30h 52m
2 stops
$805United Airlines
Fri, Mar 13 - Mon, Mar 16
United Airlines Logo
9:55 am - 11:00 am
BCN
-
COS
32h 05m
2 stops
United Airlines Logo
5:15 pm - 8:20 am
COS
-
BCN
32h 05m
2 stops
$834United Airlines
Tue, Apr 14 - Tue, Apr 21
Lufthansa Logo
8:00 am - 4:35 pm
BCN
-
ASE
16h 35m
2 stops
Lufthansa Logo
1:25 pm - 1:15 pm
ASE
-
BCN
15h 50m
2 stops
$835Lufthansa
Thu, Mar 12 - Mon, Mar 16
Iberia Logo
9:35 am - 12:09 pm
BCN
-
ASE
33h 34m
1 stop
Iberia Logo
7:00 am - 7:50 am
ASE
-
BCN
17h 50m
1 stop
$840Iberia
Fri, Mar 13 - Mon, Mar 16
American Airlines Logo
10:20 am - 11:59 pm
BCN
-
COS
20h 39m
2 stops
American Airlines Logo
6:00 am - 7:50 am
COS
-
BCN
18h 50m
1 stop
$876American Airlines
Tue, Apr 14 - Tue, Apr 21
Iberia Logo
10:45 am - 12:28 pm
BCN
-
ASE
33h 43m
1 stop
Iberia Logo
1:07 pm - 7:35 am
ASE
-
BCN
34h 28m
1 stop
$945Iberia
Sun, Mar 15 - Thu, Mar 19
American Airlines Logo
6:40 am - 8:54 pm
BCN
-
ASE
21h 14m
2 stops
American Airlines Logo
7:00 am - 7:50 am
ASE
-
BCN
17h 50m
1 stop
$1,391American Airlines
Booking Insights

KAYAK's insights & trends for Barcelona to Colorado flights

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

What is the cheapest month to fly from Barcelona-El Prat Airport to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Barcelona-El Prat Airport to Colorado, 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 Barcelona-El Prat Airport to Colorado is September, when tickets cost $798 (return) on average. On the other hand, the most expensive months are August and November, when the average cost of round-trip tickets is $1,002 and $979 respectively.

How far in advance should I book a flight from Barcelona-El Prat Airport to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Barcelona-El Prat Airport to Colorado, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Barcelona-El Prat Airport to Colorado, you should book around 2 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$326
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Barcelona to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Barcelona to Colorado?

    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 Barcelona to Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Barcelona to Colorado 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 Barcelona to Colorado?

    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 from Barcelona to Colorado with an airline and back with another airline.

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

    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 from Barcelona to Colorado 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 Barcelona to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Barcelona to Colorado. 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 Barcelona to Colorado? 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 9363 reviews
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
Airline reviews

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

10.0 ExcellentJudy, Feb 2026
BCN - IAD
Read more United Airlines reviews

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

I just think it’s unfortunate that Airlines have completely abandoned the idea of serving any kind of decent or even real food on flights, not even on a four hour flight!? Those days are gone, I guess.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

It was good. The seats in economy weren’t bad

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.

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

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

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.

Very good. Comfortable and I felt well taken care of from start to finish

Bulkhead seats should not be an extra charge. They are extremely uncomfortable. And we missed our connecting flight due to slow luggage retreaval.

Not great - seats were very narrow and food was terrible.

Some of the crew was sassy and not super helpful. The food was okay, but it seems like they were all unprepared compared to my flight I did from JFK to Frankfurt

Everything you need to know for your flight from Barcelona to Colorado

Information on your arrival and departure airports