$381 Find Cheap Flights from Spain to Denver - Compare and Save

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Cheap Flights from Spain to Denver

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Spain to Denver

Mon, Nov 9 - Sat, Nov 14
Multiple Airlines Logo
1:00 pm - 3:11 pmMAD  Madrid Barajas-DEN Denver Intl
34h 11m2 stops Casablanca Mohamed V Los Angeles
Multiple Airlines Logo
10:55 pm - 6:05 pmDEN  Denver Intl-MAD Madrid Barajas
35h 10m2 stops Los Angeles Casablanca Mohamed V
$617Multiple Airlines
Mon, Nov 9 - Sat, Nov 14
Multiple Airlines Logo
1:00 pm - 3:11 pmMAD  Madrid Barajas-DEN Denver Intl
34h 11m2 stops Casablanca Mohamed V Los Angeles
Multiple Airlines Logo
4:17 pm - 12:00 pmDEN  Denver Intl-MAD Madrid Barajas
35h 43m3 stops Dallas/Fort Worth Los Angeles Casablanca Mohamed V
$650Multiple Airlines
Sat, Dec 5 - Mon, Dec 7
United Airlines Logo
10:30 am - 8:46 amBCN  Barcelona-El Prat-DEN Denver Intl
30h 16m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
United Airlines Logo
7:40 am - 9:00 amDEN  Denver Intl-BCN Barcelona-El Prat
17h 20m1 stop Washington, D.C. Dulles Intl
$728United Airlines
Thu, Nov 5 - Thu, Nov 12
United Airlines Logo
11:00 am - 6:17 pmMAD  Madrid Barajas-DEN Denver Intl
15h 17m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
7:40 am - 7:45 amDEN  Denver Intl-MAD Madrid Barajas
16h 05m1 stop Washington, D.C. Dulles Intl
$827United Airlines
Sat, Feb 13 - Tue, Feb 23
Lufthansa Logo
6:50 am - 1:40 pmBCN  Barcelona-El Prat-DEN Denver Intl
14h 50m1 stop Frankfurt am Main
Lufthansa Logo
8:30 pm - 11:05 pmDEN  Denver Intl-BCN Barcelona-El Prat
18h 35m1 stop Munich Franz Josef Strauss
$847Lufthansa
Sun, Feb 7 - Sat, Feb 20
Lufthansa Logo
5:55 am - 1:40 pmBCN  Barcelona-El Prat-DEN Denver Intl
15h 45m1 stop Frankfurt am Main
Lufthansa Logo
4:15 pm - 5:35 pmDEN  Denver Intl-BCN Barcelona-El Prat
17h 20m1 stop Munich Franz Josef Strauss
$847Lufthansa
Sun, Nov 8 - Sun, Nov 22
British Airways Logo
8:40 pm - 3:10 pmMAD  Madrid Barajas-DEN Denver Intl
26h 30m1 stop London Heathrow
British Airways Logo
5:01 pm - 8:05 pmDEN  Denver Intl-MAD Madrid Barajas
19h 04m1 stop London Heathrow
$867British Airways
Wed, Jan 13 - Wed, Jan 27
Iberia Logo
12:00 pm - 12:23 amMAD  Madrid Barajas-DEN Denver Intl
20h 23m1 stop Chicago O'Hare Intl
Iberia Logo
5:01 pm - 2:50 pmDEN  Denver Intl-MAD Madrid Barajas
13h 49m1 stop London Heathrow
$879Iberia
Wed, Jan 13 - Wed, Jan 27
Iberia Logo
12:00 pm - 12:23 amMAD  Madrid Barajas-DEN Denver Intl
20h 23m1 stop Chicago O'Hare Intl
Iberia Logo
5:01 pm - 2:50 pmDEN  Denver Intl-MAD Madrid Barajas
13h 49m1 stop London Heathrow
$882Iberia
Thu, Oct 8 - Sun, Oct 11
British Airways Logo
10:30 am - 4:25 pmMAD  Madrid Barajas-DEN Denver Intl
13h 55m1 stop London Heathrow
British Airways Logo
10:39 am - 9:05 amDEN  Denver Intl-MAD Madrid Barajas
14h 26m1 stop Dallas/Fort Worth
$937British Airways
Booking Insights

KAYAK's insights & trends for flights to Denver

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

What is the cheapest flight to Denver?

In the last 5 days, the cheapest flight deal to Denver was found on the route from Madrid, at $617 return. The most popular connection is from Valencia to Denver and KAYAK users have found round-trip deals for as low as $748 in the last 5 days.

What is the cheapest month to fly to Denver?

The cheapest month for flights to Denver is January, where tickets cost $815 on average for return flights. On the other hand, the most expensive months are March and August, where the average cost of tickets from Spain is $1,213 and $1,177 respectively. For one-way flights, the best month to travel is May with an average price of $642.

How far in advance should I book a flight to Denver?

To get a below average price, you should book around 3 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low season

January

Cheapest flight

$381
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Madrid to Denver

FAQs - booking Denver flights

  • What is the cheapest flight to Denver?

    In the last 5 days, the cheapest flight deal to Denver was found on the route from Madrid, at $617 return. The most popular connection is from Valencia to Denver and KAYAK users have found round-trip deals for as low as $748 in the last 5 days.

  • How far is Denver Intl Airport from central Denver?

    There are 18 miles between Denver city center and Denver Intl Airport.

  • What is the name of Denver’s airport?

    Denver is served by Denver Intl Airport, also commonly referred to as Denver or Denver Intl. The airport code is DEN.

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

    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 to Denver.

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

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

    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 Denver 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 to Denver?

    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 Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Denver are there each week?

    Each week there are around 13,479 direct flights from within Spain to Denver. The most common day for departures is Sunday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Denver

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Denver flight deals.

Reviews of the top 5 airlines serving from Spain to Denver

 
Need help choosing which airline to fly with to Denver? 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.
7.8
DeltaOverall score based on 8604 reviews
7.8Entertainment
8.5Crew
7.8Comfort
7.2Food
8.1Boarding
Airline reviews

Was on time, normal boarding. The worst flight attendents and service I ever seen,, can't believe Delta can have such service. Bathroom was dirty and no toilet paper, paper towels and used toilet paper all over the floor, when I tried to tell flight attendant she didn't even let me to finish and turn around. Very rude. Wi fi didn't work.

4.0 OkayMarianna, Jun 2026
Read more Delta reviews

Was on time, normal boarding. The worst flight attendents and service I ever seen,, can't believe Delta can have such service. Bathroom was dirty and no toilet paper, paper towels and used toilet paper all over the floor, when I tried to tell flight attendant she didn't even let me to finish and turn around. Very rude. Wi fi didn't work.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

I went to washroom twice and once there was no toilet seat cover and the other no toilet paper at all. I don't think it was ever replenished or checked before we boarded as it was very early on in the flight.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

Delta flight was on time, seats were comfortable, and crew was nice.

Airline lost my luggage and set me back a day worth of travel due to having to stay in Denver to wait on my luggage

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

The flight attendants were friendly and seemed to like their jobs. I am not a high maintenance person, but they seemed to respond to people's needs and requests in a timely fashion with a smile.. I appreciate the benefits of complimentary snacks and beverages, as well as the relatively inexpensive checked baggage fee. (Although I would like it better if it were free! :) ) The only improvement that could be made to make the boarding process more efficient is to board the plane from the back. The alternative would be to board people with only a personal item first. This would reduce the wait time while others are stowing their baggage.

food /beverage service was limited to one time which was unexpected for a flight that long. food wasn't very good.

From the boarding crew to the FAs was such a good team. All with smiles and positive energy. The pilots made an announcement of us waiting on some passengers who were late landing and I didn’t hear one person feel like it was an inconvenience which was wonderful. Massive kudos to all that worked that flight. Everyone was united. 😊💙

Smooth flight, easy boarding process. Made up time in the air with initial delay due to weather pass through

awesome team work seen since on board till off plane in my destination. thanks you so much.

They did not have free WIFI and I was not okay with that!

Great, except the canon was so cold. Even the flight attendants put jackets on

I missed the flight due to maintenance issues. This is the second flight I’ve missed in four days because United allows such little time between layovers. Very disappointing

It was serviceable, nothing special but nothing awful on this leg.

The back to back mechanical delays from Denver to San Diego and then on my return flight from Denver to Great Falls it added extra time both ways

The website check in was poor. Baggage fees were in US dollars but registered in Canadian dollars. The site would not accept my credit card. Scanning the passport was the worst. Someone from United needs to try the process. I’m not a novice with tech and I have to say this was a bad experience. Everything else was great.

they couldn’t not serve coffee or tea as the water that was boarded was not potable. the veggie food was lousy. tasted very sweet. there was a crying kid a few rows ahead. what about the difficulty caused to other passengers because the kid was crying so much. parents should know their kids better and not travel. it was a very difficult situation. would not recommend this airline next time.

the internet connection was poor. and the change of time

Based upon our entire experience with Iberia, we will never fly the airline nor recommend the airline to anyone. The flight to LA was fine and the crew on this one flight was god, but Iberia treats its customers (us) horribly. There was not one flight on this trip that they did not treat us poorly. We were bumped, lost seats, lost luggage etc all on flights we booked over a year in advance. Not one leg with Iberia went smoothly. And now they have lost our luggage somewhere in Madrid. This is a horrible airline. A truly horrible airline. And Underpricer recommended by Kayak is horrible as well. The lesson learned is to book directly with an airline and stay away from Iberia at all costs.

Very cheap airline, not worth the price. And they almost lost my luggage at JFK during a direct flight. I can't believe I paid that much money for a horrible 'premium economy' flight. Just fly economy on the cheapest end; premium economy is no different. Very very poor.

Boarded in group three at Barcelona, which meant going from a gate outside onto a bus to ride across the airport to a plane waiting on the tarmac. When we arrived at the plane, crew behavior told us something was wrong. Bus driver would not let us off for almost twenty minutes, despite being crammed shoulder to shoulder. Eventually, we got onto the plane, but were then told that someone “forgot” to refuel the plane and the truck to do so had not arrived. We departed late enough that we missed our connecting train in NYC, which was the last train of the evening, so we had to stay awake all night in the passenger waiting area of Amtrak’s Penn Station, which was almost impossible to get to because the station was now closing, as it was after midnight. We had to haul four suitcases a few blocks on city streets in the rain to get to the one remaining open entrance to Penn Station. We ended up being up for 36 hours straight because someone couldn’t do their job. Never, ever again would I fly this airline.

All four segments of my trip on Iberia were late for various reasons. No apparent effort to stay on schedule. Never flying Iberia again.

The flight from Madrid to Boston was awful. Without prior warning, I was seated in the row in front of an exit row where my seat did not recline. The person in front of me reclined, reducing my already tiny space further. This was the WORST flight I've ever had.

Worst flight I ever experienced, what was supposed to a 7 hour flight ended being 13 hours on a plane with no ac and the worst cabin I have ever seen. Never again.

Excellent plane, 787. Very good seat and additional stuff they provide. Good food. Very good staff.

Excellent except WiFi is a Must on Biz class 10 hour flight ! Didn’t work entire flight. SW doesn’t do that.

Cheapflights did not forward the payment for seat assignments, and my partner and I were separated and given center (B and E) seats. Will be requesting a refund.

Everything about the flight was excellent except for the fact that we had to wait one hour on the tar app and then I had to race to catch my connecting flight with the next stop

Way too crampled. Charge more and put in less seats.

This was the worst flight of my life. Economy seat directly behind a premium economy seat with extra recline meant I have about 6 inches between my face and their chair. My seat would not recline at all. I couldn't even use my laptop on the tray table because I had so little room. I was in a casket basically for 10 hours. Completely unacceptable.

I liked the flight, the attendants, and the comfort. But the gate for boarding was poor. Even the elderly had to climb down many many steps to the bus and climb up to the plane.

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

Lufthansa is turning into a budget airline. On transfers, the luggage never arrives if you have less than 2 hours for the transfer. This is happened to me multiple times when I end up on flights serviced by Lufthansa. The first leg of the flight was serviced by Discover Airlines. It was a 3-hour flight and they only offer a glass of water. Everything else is for purchase. I purchased my ticket as economy which should have included a bag but it ended up booking as economy light so I had to pay for a bag in each direction.

The food that was served was superb!!! Awesome snacks!!! Frequent drink service!!! To me, this was shocking. I took a British Airways flight from Denver to London for the first leg of my trip and the food was horrendous. Thank you for keeping us fed and satiated on such a long flight!!!!

It was freezing. I asked crew member for a blanket and was told it might be in front of plane but I never got one. I turned off all the vents but still froze.

My flight was delayed d the gate was never updated inside the terminal. If I hadn’t checked my email I would have missed my flight. Also, I paid a total of $5100 for my flight to be. Business or first class. My final leg of my flight from Heathrow to Frankfurt was not to standard of what I expected or experienced in the previous legs of my trip.

The travel on premium economy class was very positive. Comfortable with plenty of space and leg room. The service throughout was top notch. Crew members were kind and helpful. Food and entertainment were excellent.

Long line with check in at the DIA British Airway counter.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

Everything excellent except for bag drop off. We started at the D area and that was so slow that it was eventually closed just as we were about to go to a station. We then went to F. We got one suitcase checked and then the screen showed that the station was no longer operable. There were long lines everywhere so we had to ask if we could butt in to the next station to finish. Again, this was the only incident, otherwise it was an excellent flying experience

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

We never made it onto this flight due to BA's lackluster organisation.

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

The seat was very uncomfortable. It helped to use the foot rest. Could not sleep because of the seat.

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