Find flights
When to book
Airlines
FAQs

Cheap flights from Ireland to Denver from £311

DUB — DEN
21 Nov — 28 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Denver

Mon 23/1111:30 -
1 stop13h 30m
Mon 11/115:40 -
1 stop11h 35m
Deal found 18/10£462
Sun 22/1107:35 -
1 stop14h 35m
Mon 30/1117:01 -
1 stop13h 34m
Deal found 20/10£486
Tue 24/1108:45 -
1 stop13h 25m
Tue 12/117:01 -
1 stop13h 34m
Deal found 18/10£488
Thu 12/1108:45 -
1 stop13h 25m
Tue 1/1217:01 -
1 stop13h 34m
Deal found 20/10£501
Wed 11/1105:10 -
1 stop15h 30m
Mon 16/1116:10 -
1 stop11h 10m
Deal found 18/10£506
Thu 12/1109:00 -
2 stops30h 54m
Tue 1/1219:20 -
2 stops28h 50m
Deal found 21/10£510
Wed 11/1105:10 -
1 stop15h 30m
Tue 17/1116:10 -
1 stop11h 10m
Deal found 20/10£515
Thu 12/1105:45 -
2 stops18h 25m
Thu 26/1108:05 -
2 stops17h 55m
Deal found 21/10£515

Find flight deals from Ireland to Denver

Round-trip from

£462

One-way from

£311

Popular in

July

Cheapest in

April

Average price

£555
Icelandair
  • Icelandair
  • 23/11-11/1
  • 2 total stops
  • 25h 05m total
  • Ireland to Denver
Search Deals
Delta
  • Delta
  • 7/12-31/12
  • 2 total stops
  • 21h 59m total
  • Ireland to Denver
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£83 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ireland to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 8/2

05:45-20:00

2 stops21h 15m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£314

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 27/2

09:55-16:42

1 stop13h 47m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£318

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Fri 19/3

05:45-20:34

2 stops20h 49m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£341

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 3/4

08:55-20:34

2 stops18h 39m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£344

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 29/3

08:55-20:34

2 stops18h 39m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£344

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 30/3

06:00-15:56

2 stops16h 56m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£344

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 15/12

05:45-16:02

2 stops17h 17m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£344

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sun 28/3

15:00-10:48

1 stop26h 48m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£347

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 16/12

10:45-20:35

1 stop16h 50m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£347
Fastest return journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 17/12

09:40-16:02

1 stop13h 22m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£347

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Ireland to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Ireland with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Ireland to Denver

What is the cheapest month to book a flight from Ireland to Denver?

Currently, April is the cheapest month in which you can book a flight from Ireland to Denver (average of £386). Flying from Ireland to Denver in July is currently the most expensive (average of £720). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How often are flights from Ireland to Denver delayed?

About 9% of weekly flights between Ireland and Denver have experienced delays in the past year, with the average delay time being 94 minutes.

What is the most punctual flight time for Ireland to Denver flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Denver flights?

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 9% of flights being delayed.

How far ahead should I book a flight from Ireland to Denver?

The best time to book flights from Ireland to Denver is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Denver

See what other customers who have flown with Aer Lingus,Icelandair, andBritish Airways from Ireland to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,851 reviews
Check prices

Food

6.7

Boarding

7.5

Comfort

7.2

Crew

8.1

Overall

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Karin,Oct 2026

DUB - MCO

Food could have been better. The chicken and rice dish was excellent. Not sure about the salads. And the pizza was horrible was lukewarm and had way too much dough. Staff was mixed. Some staff didn’t seem like they wanted to be there.
Aer Lingus
7.3
Good
1,851 reviews
Aer Lingus
7.3
Good
1,851 reviews
Check prices

Food

6.7

Boarding

7.5

Comfort

7.2

Crew

8.1

Overall

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Karin,Oct 2026

DUB - MCO

Food could have been better. The chicken and rice dish was excellent. Not sure about the salads. And the pizza was horrible was lukewarm and had way too much dough. Staff was mixed. Some staff didn’t seem like they wanted to be there.
Icelandair
7.0
Good
762 reviews
Aer Lingus
7.3
Good
1,851 reviews
Check prices

Food

6.7

Boarding

7.5

Comfort

7.2

Crew

8.1

Overall

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Karin,Oct 2026

DUB - MCO

Food could have been better. The chicken and rice dish was excellent. Not sure about the salads. And the pizza was horrible was lukewarm and had way too much dough. Staff was mixed. Some staff didn’t seem like they wanted to be there.
British Airways
6.7
Okay
8,267 reviews
Aer Lingus
7.3
Good
1,851 reviews
Check prices

Food

6.7

Boarding

7.5

Comfort

7.2

Crew

8.1

Overall

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Karin,Oct 2026

DUB - MCO

Food could have been better. The chicken and rice dish was excellent. Not sure about the salads. And the pizza was horrible was lukewarm and had way too much dough. Staff was mixed. Some staff didn’t seem like they wanted to be there.

Related info for your journey

  • What airport do you fly into for flights to Denver from Ireland?

    If you book a flight to Denver from Ireland, you will be flying to Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver.

  • How popular is this Ireland to Denver flight route?

    Within the past month, 15 users have taken a look at flights from Ireland to Denver Intl.

  • How long is the flight from Ireland to Denver?

    Icelandair, British Airways, and Delta can get you from Ireland to Denver in just under 13h 25m. Your travel time can differ by up to 8h 34m. The distance between Ireland and Denver is about 4378 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Ireland to Denver?

    Before booking your flight to Denver from Ireland, check out the most reliable airlines to get you to your destination on time: American Airlines (75%), Aer Lingus (75%), Iberia( 75%).

  • Can I find deals for flights from Ireland to Denver that include hotel bookings?

    Yes. In addition to deals on Ireland to Denver flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ireland to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Denver.

  • Can I find deals for business class flights from Ireland to Denver?

    Yes. Cheapflights offers flight deals from Ireland to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ireland to Denver?

    Currently, April is the cheapest month in which you can book a flight from Ireland to Denver (average of £386). Flying from Ireland to Denver in July is currently the most expensive (average of £720). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ireland to Denver

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£299Average£397FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£335Average£458FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£366Average£632FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ireland to Denver?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ireland to Denver. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ireland to Denver?

Millions of users choose and trust Cheapflights to book the best flight deals from Ireland to Denver for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ireland to Denver with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to Denver, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ireland to Denver become cheaper?

Yes, Cheapflights offers price alerts on Ireland to Denver flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.