€284 Find Cheap Flights 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 Ireland to Colorado departing on 11/9. 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

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 for flights to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Colorado, as well as popular online travel agencies
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Flights Deals

Best Colorado Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop€395
Denver
Denver1 stop€395

Book Cheap Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights 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 return flight deals to Colorado

Fri, 29 Aug - Sun, 31 Aug
Icelandair Logo
12:15 - 12:30DUB-DEN
31h 15m1 stop
Icelandair Logo
16:40 - 13:15DEN-DUB
13h 35m1 stop
€395Icelandair
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Tue, 9 Sep - Tue, 23 Sep
Icelandair Logo
14:15 - 18:55DUB-DEN
11h 40m1 stop
Icelandair Logo
16:40 - 11:05DEN-DUB
11h 25m1 stop
€419Icelandair
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Tue, 9 Sep - Tue, 23 Sep
British Airways Logo
08:35 - 20:00DUB-DEN
18h 25m2 stops
British Airways Logo
12:29 - 11:55DEN-DUB
16h 26m2 stops
€515British Airways
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Fri, 10 Oct - Fri, 17 Oct
Delta Logo
08:55 - 22:30DUB-DEN
20h 35m2 stops
Delta Logo
12:20 - 09:15DEN-DUB
13h 55m1 stop
€518Delta
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Thu, 4 Sep - Sun, 14 Sep
Delta Logo
08:55 - 19:55DUB-DEN
18h 00m2 stops
Delta Logo
12:05 - 09:15DEN-DUB
14h 10m1 stop
€520Delta
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Wed, 8 Oct - Wed, 15 Oct
KLM Logo
10:00 - 22:30DUB-DEN
19h 30m1 stop
KLM Logo
12:20 - 09:15DEN-DUB
13h 55m1 stop
€526KLM
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Sat, 18 Oct - Sun, 26 Oct
KLM Logo
10:00 - 20:00DUB-DEN
17h 00m1 stop
KLM Logo
10:45 - 07:45DEN-DUB
15h 00m1 stop
€526KLM
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Sun, 12 Oct - Sat, 25 Oct
 Logo
09:10 - 15:30DUB-DEN
13h 20m1 stop
 Logo
10:50 - 08:45DEN-DUB
14h 55m1 stop
€527
Find Deal
Thu, 9 Oct - Wed, 15 Oct
 Logo
07:50 - 23:16DUB-DEN
22h 26m2 stops
 Logo
14:20 - 07:55DEN-DUB
10h 35m1 stop
€561
Find Deal
Wed, 19 Nov - Tue, 2 Dec
British Airways Logo
08:40 - 20:09DUB-COS
18h 29m2 stops
British Airways Logo
17:09 - 17:00COS-DUB
16h 51m2 stops
€790British Airways
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What is the cheapest flight to Colorado?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Colorado from Ireland found in the last 72 hours was to Denver, at €902 return. The most popular route is Dublin (DUB) to Denver (DEN) and the cheapest return airline ticket found on this route in the last 72 hours was €902.

What is the cheapest month to fly from Ireland to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland 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 Ireland to Colorado is November, when tickets cost €603 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is €816 and €801 respectively.

How far in advance should I book a flight from Ireland to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights 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 Ireland to Colorado, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight€284
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flight from Dublin to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Ireland 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 Ireland to Colorado.

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

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

  • What is the Hacker Fare option on flights from Ireland to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland 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 Ireland 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 Ireland to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Friday when return tickets can be as cheap as €696. On the other hand, the most expensive day to fly is Sunday, when return prices are €1,219 on average.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally in the morning, when round-trip flights cost €745 on average. Morning departures are around 15% cheaper than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the evening, which is peak travel time and where the average cost of a ticket is €873.

Top tips for finding cheap flights to Colorado

  • Looking for cheap airfare to Colorado? 25% of our users found return tickets to Colorado for the following prices or less: From Dublin €780
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Colorado flight deals.

Reviews of the top 3 airlines flying to Colorado

 
See real verified KAYAK customer reviews for airlines flying to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Colorado. 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 Ireland 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.
7.1
Aer LingusOverall score based on 1144 reviews
7.0Comfort
6.8Entertainment
7.2Boarding
6.4Food
8.0Crew
Airline reviews

The ease of boarding was good. I wish they had something to eat on the plane.

8.0 ExcellentBenjamin, Jun 2025LHR - DUB
Read more Aer Lingus reviews

The ease of boarding was good. I wish they had something to eat on the plane.

I like Aer Lingus so that is why I’m writing this critique so they can become better. The boarding gate was too small to board properly. Our seats were toward the back of the plane knowing we would be boarding after business class, we moved to that area after business class boarded. An Aer Lingus employee told us we couldn’t stand there. We explained we were the next group to board and wouldn’t even be able to hear when our boarding was called. She didn’t care and was not very professional. The cabin was freezing. I wouldn’t feed my dog the food. We were over an hour late coming into chicago because of weather which can’t be avoided. I asked the crew if they could make an annoucement for before whose final destination is chicago to wait and allow the people with connecting to deplane first. He said there are a lot of people with connecting flights. He said, it doesn’t matter. Well, yes it does. He could have been more considerate of his passengers.

Really helpful staff at the airport and the flight was comfortable with good entertainment options and food service

The seat spacing was good. The food, not so good... typical airline food. 😕

I would face like to have more selections for entertainments overall it was very good. .

One cold drinks service. No snacks with drinks. No tomato juice or apple juice, coke - only fanta or sprite then ran out of that. Went to gally after meal service no one there / no self service for water at least. Waited 25 min for cabin crew to assist. No recycling of cardboard/ plastic - all put to garbage. Breakfast was a nutrigrain bar and an orange juice. Also I'm sure I booked a flight with checked luggage allowance but had to buy extra when I had my booking confirmation. Movies were good. Chairs comfy. Pillow and blanket and ac vents.

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

At check-in the unmanned machines said QR code was invalid so had to queue for over an hour to check in bags

i used to fly aer Lingus regularly but due to price - poor seating etc i have been using other carriers - i now have aer lingus in my state and the price is always the highest - i have flown to Ireland 11 times in last 24 months and have not used Hartford because of price

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

I had an exit row and so was Comfortable on the long flight.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

The flight was an hour late leaving Heathrow. The food was mediocre. When we got to Austin, my husband’s luggage was missing. He filled out information at baggage claim. We are waiting to hear something. His name is Henry Jacob Braunig.

The food was very good and it came multiple times

Flight from LGW to JFK delayed by 4 hrs No explanation given until the pilot said the delay due to planned maintenance on the aircraft

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.

All service prior to the flight was terrible: online check-in not working, no customer service tel,, multiple airport scanners not working, A huge mess.

CONSTANT ERROR MESSAGE THAT THE WIFI COULD NOT BE PURCHASED DUE TO INABILITY TO CONNECT PAYMENT SYSTEM VIA SATELLITE. THIS HAPPENED IN BOTH DIRECTIONS. THE MAIN REASON I TRAVEL IN PRIORITY IS TO BE ABLE TO WORK FOR WHICH I NEED ACCESS TO INTERNET. .

They lost my luggage. Lady who was helping with it in Austin was rude. Not very helpful!

Waited 3.25 hours in plane only to have the flight cancelled.

bad, made it to connecting flight and they didnt let me board

More space, of course. a footrest! more room to walk. Movie selection was awful. Some good documentaries would help if the movies can't be better. The flight itself was great, crew was great.

Everything you need to know for your flight to Colorado

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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