$344 Find Cheap Flights from Ireland to Colorado

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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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KAYAK's insights & trends for flights to Colorado

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

What is the cheapest flight to Colorado?

These are the best round-trip 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 $760 round-trip. The most popular route is Dublin (DUB) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $760.

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 September, when tickets cost $709 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $963 and $926 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.

Which is the cheapest airport to fly into in Colorado?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Colorado is Denver Intl Airport (DEN), with an average flight price of $623.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$344
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Dublin to Denver

FAQs for booking flights from Ireland to Colorado

  • 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 travelers 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 round-trip 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 where round-trip tickets can be as cheap as $760. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $1,107 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 afternoon, when round-trip flights cost $716 on average. Morning departures are around 5% 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 $844.

Top 5 airlines serving from Ireland 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.
7.4
United AirlinesOverall score based on 8731 reviews
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
7.1Entertainment
Airline reviews

The gate attendant let me walk right by her with a bag too big for the overhead compartment

10.0 ExcellentMarni, Apr 2025DEN - DRO
Read more United Airlines reviews

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Not as good as expected Air Can needs to improve totally rated on internet as worst

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was 4 hours late. Almost missed my connecting flight no food or drinks on connecting flight. Overall terrible experience

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

The new seating in BC was a joy. My vegetarian pasta dish was excellent, very creative. The chicken potpie was ..... The crew was extremely focused and impersonal, but everything worked.

Eventless. It was a good flight and good crew. Can’t complaint.

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

The flight was two hours late to take off. The captain kept making announcements in English, but the volume on the speakers was low and we could not hear him. The flight attendant’s French translation was loud and clear, but we couldn’t understand French. The crew was nowhere to be found to relay what the captain was announcing. Very frustrating experience. American has to do better.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

In flight connectivity (via T-Mobile) was often not working.

This flight was of exactly the same high standard as the outbound leg, exactly a week earlier - except that we didn't have any food or drink because it departed at around midnight.

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

I liked how they looked after couples by providing a row of 4 seats if available.

Food was very bad. Boarding was disorganized and messy. Crew was friendly

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Seats were alarming close to the row in front of you. I didn’t do the measurements online, which I’m sure they’re available, but it seemed much tighter than other planes, but the airplane itself was well maintained and looked fairly new. My only complaint on the staff was that we’re on an international flight. Normally they give you wine with dinner and the flight attendant decided to pull some strict restrictions and wouldn’t give more than one glass of wine per person, and you could not share with your spouse, which seemed ridiculous when we have four people on the plane with us and only one person ordered wine asked for a second one and she said oh absolutely not. It’s only one per person Which on a transcontinental usually is not the case. They’re very attentive on making sure everyone is as comfortable as possible.

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

Booked through Kayak, couldnt take flight, Kayak punted to Orbiz, Orbiz punted to Aer Lingus, Aer Lingus said sorry about your luck, try Kayak/Orbiz. Terrible customer service collecting air fares and not even offering a voucher when customers cant take flight

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.

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

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 flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

Overall good. I was surprised how easy it was to get from plain to plain in such a short time. Food choices were not so great and quite expensive. Entertainment was ok. Flights were smooth.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Fantastic! Great seats! Friendly staff! Amazing selection of shows and movies! Smooth ride! I don’t know what more I could have asked for honestly. They made flying a breeze this time around.

Had a very bad experience flying out of London. Our initial flight was cancelled without notice and the next flight had a layover of 8 extra hours. Me, my husband and my 8-year-old were already sick, and this further added to our problems. We paid extra for the seats: I was not even given our chosen seats which we paid for months before the trip. We were shoved into the available seats which were middle ones in the back (we had paid for front window, aisle, aisle). The seats were so uncomfortable and getting out of middle seats every so often (with a sick child) was a task. We had initially chosen British Airways because of the short layover, however, that went out of the window. Although unexpected things happen all the time and I understand customers have to adjust for the unplanned, however, how the airlines react and make the passengers comfortable during that time is the real test. We were not given any compensation for food or any arrangement to stay comfortable during that time. In fact, our paid seats were taken away as well.

The whole experience was very disappointing. Drinks could have been served and offered more frequently. The seats were reasonable but considering I paid for premium economy, I felt cheated. I flew premium economy with Japanese Airlines ANA 5 years ago and their service was by far, superior. We had access to the club lounge, better seats and excellent service. Out of 10, I would rate the experience as 4. Everything felt cheap and the Airbus aircraft are far better and more comfortable

Flight was okay however bags were left in London even though we had a 7 hour layover. Bags are yet to be confirmed to reach final destination. Horrible work.

Quiet and comfortable aircraft, pretty smooth flight. Very comfortable business class cabin with decent entertainment. Good service from the crew. All in all a good experience.

Pleasant staff. Entertainment system was down in many rows for a while the staff did rectify it in the end.

Why does a reputable airline like BA allow a miserable domestic airline like AA to operate its flights? There is no comparison between the two

The flight was booked on British Airways but operated by American Airlines. When I went to check in at the BA counter I was told I needed to check in at the American counter. That wasn't a problem but it would have been nice to know and save a bit of time on the very long American check-in lines.

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

Book cheap flights from Ireland to Colorado

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Colorado found on KAYAK in the last 72 hours.
9/4Thu
1 stopIcelandair
29h 15mDUB-DEN
9/9Tue
1 stopIcelandair
11h 25mDEN-DUB
$642
9/8Mon
1 stopIcelandair
11h 40mDUB-DEN
9/19Fri
1 stopIcelandair
13h 35mDEN-DUB
$649
9/8Mon
nonstopAer Lingus
9h 34mDUB-DEN
9/19Fri
nonstopAer Lingus
8h 45mDEN-DUB
$716
8/27Wed
1 stopUnited Airlines
14h 20mDUB-DEN
9/6Sat
2 stopsUnited Airlines
16h 55mDEN-DUB
$736
9/4Thu
2 stopsUnited Airlines
16h 28mDUB-DEN
9/9Tue
2 stopsUnited Airlines
13h 55mDEN-DUB
$741
6/16Mon
nonstopAer Lingus
9h 34mDUB-DEN
7/2Wed
1 stopAer Lingus
21h 31mDEN-DUB
$816
6/16Mon
1 stopAmerican Airlines
15h 39mDUB-DEN
7/2Wed
nonstopAmerican Airlines
8h 45mDEN-DUB
$941
6/16Mon
2 stopsBritish Airways
17h 14mDUB-DEN
7/2Wed
1 stopBritish Airways
15h 55mDEN-DUB
$948
6/16Mon
nonstopAmerican Airlines
9h 34mDUB-DEN
7/2Wed
1 stopAmerican Airlines
11h 14mDEN-DUB
$953
6/16Mon
2 stopsBritish Airways
17h 14mDUB-DEN
7/2Wed
1 stopBritish Airways
20h 55mDEN-DUB
$965

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Colorado found on KAYAK in the last 72 hours.
6/11Wed
3 stops
53h 48mDUB-DEN
$344
5/28Wed
2 stops
51h 17mDUB-DEN
$363
10/2Thu
1 stopIcelandair
11h 40mDUB-DEN
$458
9/9Tue
1 stopIcelandair
11h 40mDUB-DEN
$464
7/8Tue
2 stopsAer Lingus
27h 44mSNN-DEN
$512
10/3Fri
1 stopAmerican Airlines
14h 50mDUB-DEN
$536
7/3Thu
2 stopsAer Lingus
27h 44mSNN-DEN
$581
8/28Thu
nonstopAmerican Airlines
9h 34mDUB-DEN
$643
5/25Sun
2 stopsBritish Airways
18h 23mDUB-DEN
$815
5/31Sat
1 stopBritish Airways
27h 15mDUB-DEN
$825

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Last minute flights to Colorado

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Colorado that are departing in the next 10 days.
5/20Tue
multi-stopAir Canada
17h 15mDUB-DEN
5/27Tue
multi-stopAir Canada
16h 55mDEN-DUB
$759
5/20Tue
multi-stop
33h 50mDUB-DEN
5/27Tue
multi-stop
23h 55mDEN-DUB
$785
5/16Fri
multi-stopTurkish Airlines
35h 20mDUB-DEN
6/1Sun
multi-stopTurkish Airlines
33h 45mDEN-DUB
$793
5/16Fri
nonstopAer Lingus
9h 34mDUB-DEN
6/1Sun
nonstopAer Lingus
8h 45mDEN-DUB
$886
5/17Sat
nonstopAer Lingus
9h 34mDUB-DEN
6/1Sun
nonstopAer Lingus
8h 45mDEN-DUB
$935
5/16Fri
multi-stopTurkish Airlines
39h 05mDUB-DEN
6/1Sun
multi-stopTurkish Airlines
33h 45mDEN-DUB
$1,032
5/17Sat
nonstopAmerican Airlines
9h 34mDUB-DEN
6/1Sun
multi-stopAmerican Airlines
11h 51mDEN-DUB
$1,128
5/18Sun
multi-stopAmerican Airlines
16h 55mDUB-DEN
6/1Sun
nonstopAmerican Airlines
8h 45mDEN-DUB
$1,133
5/16Fri
multi-stopBritish Airways
17h 48mDUB-DEN
6/1Sun
multi-stopBritish Airways
14h 25mDEN-DUB
$1,179
5/17Sat
multi-stopBritish Airways
17h 29mDUB-DEN
6/1Sun
multi-stopBritish Airways
14h 04mDEN-DUB
$1,234

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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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