$338 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 $747 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 $747.

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 $965 and $873 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 $676.


Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$338
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 10% 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 $672. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $952 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 1% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $803.

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 8696 reviews
7.7Boarding
8.1Crew
6.6Food
7.1Entertainment
7.3Comfort
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.

Paid $35 and not able to access the internet at all.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Flight was delayed bc of mechanical issue. New plane had different configuration so some seats had to be switched. They called all passengers who needed new boarding cards. They did not call us so we thought our seats were the same and fine. When we boarded they informed us our receipts had changed and we are now all sitting separate and in the back row. Both my daughters had meltdowns and started to cry and once we got on the flight, we figured out how we could sit closer to each other, but this was very upsetting.

Took off on time and successfully avoided weather that looked to be a problem along the way

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.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

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.

Horrible. The flight was delayed by over 3 hours but updates were barely provided. Boarding started 3 hours late then stopped because their system crashed. So now, passengers were standing for 15 minutes in the open waiting to get boarding passes scanned and get on a bus. Duty-free closed around 4-4:30. Only 1 food outlet was open and it was super slow and busy since it was serving passengers from multiple flights. So a number of passengers couldn't buy meals at the terminal. Since the flight was delayed by over 3 hours, we could have been offered snacks on-board. Nothing. The seats barely reclined. In-flight entertainment options were pitiful. Overall, a miserable experience. Never flying on Icelandair ever again. :(

Again, lines for boarding are a problem in iceland. The flight itself was fine and very smooth. No complaints. We would definitely fly icelandair again.

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

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.

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

There was no flight. I booked a flight from Toronto to Bordeaux with a stopover in Dublin. I arrived in Dublin and the flight number I had didn't exist and the flight going to Bordeaux I wasn't on. I had to book a new flight with a different airline for later in the day and pay out of pocket.

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

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.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

The seats in row 31 are terrible and small and uncomfortable. Don't ever sit there. The window seat is so close to the curve of the plane is so annoying. I paid extra for this seat and I hated all 10 hours in it.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

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.
6/4Wed
2 stopsScandinavian Airlines
35h 49mDUB-DEN
6/9Mon
2 stopsScandinavian Airlines
46h 20mDEN-DUB
$558
6/5Thu
2 stopsScandinavian Airlines
35h 49mDUB-DEN
6/12Thu
2 stopsScandinavian Airlines
43h 15mDEN-DUB
$560
6/19Thu
1 stopIcelandair
11h 40mDUB-DEN
7/2Wed
1 stopIcelandair
13h 35mDEN-DUB
$707
5/20Tue
1 stopIcelandair
11h 40mDUB-DEN
5/27Tue
1 stopIcelandair
11h 25mDEN-DUB
$718
6/16Mon
1 stopBritish Airways
14h 40mDUB-DEN
7/2Wed
1 stopBritish Airways
17h 50mDEN-DUB
$779
6/16Mon
nonstopAer Lingus
9h 34mDUB-DEN
6/26Thu
1 stopAer Lingus
15h 00mDEN-DUB
$814
5/17Sat
nonstopAer Lingus
9h 34mDUB-DEN
6/2Mon
1 stopAer Lingus
21h 26mDEN-DUB
$816
5/22Thu
nonstopAmerican Airlines
9h 34mDUB-DEN
5/25Sun
1 stopAmerican Airlines
15h 40mDEN-DUB
$907
5/22Thu
nonstopAmerican Airlines
9h 34mDUB-DEN
5/25Sun
1 stopAmerican Airlines
15h 40mDEN-DUB
$908
6/13Fri
2 stopsBritish Airways
18h 37mDUB-COS
6/20Fri
2 stopsBritish Airways
17h 40mCOS-DUB
$5,296

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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.
5/29Thu
2 stopsWestJet
32h 42mDUB-DEN
$338
5/28Wed
3 stops
58h 42mDUB-DEN
$348
9/7Sun
1 stopIcelandair
13h 40mDUB-DEN
$483
9/22Mon
1 stopIcelandair
11h 40mDUB-DEN
$493
7/8Tue
2 stopsAer Lingus
27h 44mSNN-DEN
$587
7/3Thu
2 stopsAer Lingus
17h 49mSNN-DEN
$596
9/30Tue
1 stopBritish Airways
12h 55mDUB-DEN
$720
10/7Tue
2 stopsBritish Airways
19h 02mDUB-DEN
$729
5/28Wed
nonstopAmerican Airlines
9h 34mDUB-DEN
$825
6/2Mon
nonstopAmerican Airlines
9h 34mDUB-DEN
$826

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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.
5/5Mon
multi-stopBritish Airways
26h 30mDUB-DEN
5/12Mon
multi-stopBritish Airways
18h 00mDEN-DUB
$762
5/5Mon
multi-stopAir Canada
30h 01mDUB-DEN
5/12Mon
multi-stopAir Canada
15h 35mDEN-DUB
$774
5/3Sat
multi-stopJetBlue
18h 29mDUB-DEN
6/4Wed
multi-stopJetBlue
12h 37mDEN-DUB
$854
5/5Mon
nonstopAmerican Airlines
9h 34mDUB-DEN
5/12Mon
multi-stopAmerican Airlines
14h 10mDEN-DUB
$908
5/3Sat
multi-stopUnited Airlines
17h 15mDUB-DEN
6/4Wed
multi-stopUnited Airlines
16h 19mDEN-DUB
$924
5/3Sat
multi-stop
35h 47mDUB-DEN
6/4Wed
multi-stop
17h 40mDEN-DUB
$925
5/5Mon
nonstopAmerican Airlines
9h 34mDUB-DEN
5/12Mon
nonstopAmerican Airlines
8h 45mDEN-DUB
$926
5/5Mon
multi-stop
30h 57mDUB-DEN
5/12Mon
multi-stop
21h 40mDEN-DUB
$931
5/3Sat
nonstop
9h 34mDUB-DEN
6/4Wed
multi-stop
11h 55mDEN-DUB
$1,060
5/3Sat
nonstopAer Lingus
9h 34mDUB-DEN
6/4Wed
nonstopAer Lingus
8h 45mDEN-DUB
$1,122

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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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