DEN

Find cheap flights to Denver

Return
Economy
Washington (WAS)
Denver Intl
Thu 19/12
Thu 26/12
Any month
Compare vs KAYAK |
Search hundreds of travel sites at once for deals on flights to Denver

Ireland to Denver flight information

Flights arrive in Denver
Flights depart from Ireland
Flight price €291
Airlines Air Canada, Lufthansa, British Airways, Delta, Icelandair

Top tips for finding cheap flights to Denver

Looking for cheap airfare to Denver? 25% of our users found return tickets to Denver for the following prices or less: From Dublin €368
Book at least 5 weeks before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly to Denver is September.
Enter your preferred departure airport and travel dates into the search form above to unlock the latest Denver flight deals.

FAQs - booking Denver flights

What is the cheapest flight to Denver?

The cheapest airline ticket to Denver from Ireland in the last 72 hours was €291 return on the route Dublin to Denver. The most popular route is Dublin to Denver and the cheapest ticket found on this route in the last 72 hours was €622 return.

How far is Denver airport from central Denver?

Denver Airport is 30 kilometres from the centre of Denver. View on map.

What is the name of Denver’s airport?

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

How does KAYAK find such low flight prices?

KAYAK processes over 2 billion travel queries annually and displays results from hundreds of airlines and third party sites, allowing it to find a variety of flight prices and options. It also displays results from 2M+ properties along with car hire, holiday packages, activities and millions of verified reviews so users can see as many available travel options as possible.

How can Hacker Fares save me money?

Hacker Fares allow you to combine one-way tickets on different airlines when it can save you money over a traditional return ticket.

Does KAYAK query more flight providers than competitors?

Yes, KAYAK has access to more data and information than online travel agencies and consistently outperforms the competition in accuracy, globally.

How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?

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

Book Cheap Denver Plane Tickets

(Return)
Airports
Origin
Dublin
€291
only
€291
Destination
Denver
€291
only
€291
Sat, 25 Jan
DUB
Dublin
DEN
Denver Intl
14h 55m
Wed, 5 Feb
DEN
Denver Intl
DUB
Dublin
17h 55m
€291
Trip: 12 days
7.3Good Show reviews
Overall 7.3 Good
Based on 24,484 reviews
Overall
7.3
Boarding
7.4
Comfort
7.1
Crew
7.8
Entertainment
6.9
Food
6.5
LHR
YYZ
Excellent 8.6

Pros: Boarding process and customer service

Cons: Food could have been better and seating comfort

YYZ
FCO
Okay 4.3

Pros: Not one thing

Cons: Too crowded. The service was horrible with cranky attendants. I had to clear my own food tray. Inconsistent and uncomfortable

YYZ
VIE
Excellent 9.6

Pros: Everything was perfect! The crew always ready to serve us!

Cons: Perhaps, update media features! A small corner for children to keep them "busy".

PHL
YYZ
Good 7.6

Cons: The flight and crew were very good. An hour late taking off with not explanation. Frustrating on an hour flight.

YYZ
LHR
Excellent 8.0

Pros: Ability to plug into a movie or music and go to sleep

Cons: Not being woke up to find out if I want something to eat or drink. Aisle seat and i was being knocked a lot. I had been up over 30 hours and was exhausted.

Sun, 1 Mar
DUB
Dublin
DEN
Denver Intl
14h 10m
Sat, 7 Mar
DEN
Denver Intl
DUB
Dublin
30h 15m
€330
Trip: 7 days
8.1Excellent Show reviews
Overall 8.1 Excellent
Based on 27,122 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
PHC
FRA
Good 7.3

Pros: Overall, I can’t complain. The take off and landing was peaceful

Cons: The food could’ve been better. The wait time at Abuja needs lots of improvement. It was the worst part of the trip

FRA
SJO
Excellent 8.0

Cons: Mejorar las oferta de películas abordo

FRA
LHR
Excellent 8.4

Cons: Security in Frankfurt - long lines

SEA
FRA
Excellent 9.6

Pros: Staff was extremely nice and helpful

MUC
MEX
Excellent 9.3

Pros: The punctuality and the entertainment

Cons: Perhaps a more organized boarding process

Sat, 21 Dec
DUB
Dublin
DEN
Denver Intl
22h 29m
Sat, 28 Dec
DEN
Denver Intl
DUB
Dublin
19h 37m
€448
Trip: 8 days
7.4Good Show reviews
Overall 7.4 Good
Based on 22,250 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.8
LHR
ORD
Excellent 10.0

Cons: Great experience

LHR
KEF
Excellent 9.0

Cons: Some form of entertainment

SIN
SYD
Okay 5.6

Pros: Gate was super close to the lounge.

Cons: The security check at the gate requires one to leave the comfort of the lounge early incase of queues and then wait in an over crowded lounge with the other passengers (so the fact you are business/first or have one world status does little to ease the burden of boarding. The lounge also did not offer red eye passengers a meal and the on board meal service is slow (so if you are hungry it eats into precious sleeping time). The breakfast wakeup was also disappointing. My meal of choice was not available and the whole process was rushed like a fast food restaurant. Overall I am disappointed by the club world offering on this route and would not pay for it again unless intended to get on and just sleep for the entire journey.

AMS
LHR
Excellent 8.0

Pros: British airways, does what it says on the tin.

Cons: If you have any problems. Do not call customer support!!! Call centre is in SA, and the operatives are unhelpful, put the phone down and incompetent. I have reservations wheather to book with BA ever again due to my bad experience. 2 hours wasted on the phone, followed by calls the next day to finally get 2 off flights cancelled and a return flight amended in my party of 3. Not fun!!

LHR
HYD
Excellent 9.3

Pros: Great service.

Cons: Interesting business class configuration. Felt cramped compared to normal business class configuration of 4 across,

Wed, 4 Dec
DUB
Dublin
DEN
Denver Intl
16h 59m
Tue, 10 Dec
DEN
Denver Intl
DUB
Dublin
19h 28m
€527
Trip: 7 days
8.1Excellent Show reviews
Overall 8.1 Excellent
Based on 27,155 reviews
Overall
8.1
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.5
ATL
OKC
Excellent 10.0

Cons: Superb service on board and at kiosk!

AMS
MSP
Excellent 10.0

Cons: even though I was in Delta One -- the seats in the reclined position were kind of narrow, arm rests in the way made it difficult to turn over, IF I were trying to sleep. but i loved being in first class -- the only way to go on a long flight :)

MEX
JFK
Okay 4.8

Pros: The crew is nice

Cons: Boarding was horrible.

LGA
MIA
Excellent 9.6

Pros: WARDA at the Miami Gate H07 was awesome. She went above and beyond. Everyone else was very helpful but you can get tell she does more than the norm. LOVE LOVE LOVE the free entertainment in the individual seats. Perfect for families!

Cons: No complaints

SJC
SLC
Excellent 10.0

Pros: Crew was great, very generous with snacks and beverages, and prior to boarding we were able to switch flights and seats without problem. All the Delta agents were extremely helpful, and had great customer service!

Fri, 28 Feb
DUB
Dublin
DEN
Denver Intl
14h 55m
Wed, 4 Mar
DEN
Denver Intl
DUB
Dublin
17h 55m
€292
Trip: 6 days
7.3Good Show reviews
Overall 7.3 Good
Based on 24,484 reviews
Overall
7.3
Boarding
7.4
Comfort
7.1
Crew
7.8
Entertainment
6.9
Food
6.5
YYZ
YUL
Mediocre 2.0

Pros: The flight was redirected to ottawa due weather conditions specifically high wind which in my 20 years of traveling never experienced this here in Canada. We stayed for an hour and at the end of it arrived at Montreal airport at 3:45pm. Terrible service. Refund and or adjustment on tickets price should be reviewed.

LGA
YYZ
Okay 5.6

Pros: The plane itself was great - spacious, room for luggage, in-seat entertainment and Wi-fi, power points and USB ports at every seat. Crew was perfectly fine.

Cons: There were no announcements prior to the 90-minute late departure, pretzels were the only “food” available (flight scheduled to leave at 5.50pm; left at 7.20, landed after 9.30 due to snow in Toronto)

YYZ
YVR
Good 7.2

Cons: Last 4 rows of overhead bins reserved for crew and plane paraphernalia. Piece of overhead bin fell off and almost hit another passenger during boarding.

YUL
LAX
Good 6.6

Cons: The plane didn’t have water in the bathrooms in the back of the plane so we had to use wet wipes to clean our hands afterwards. Entertainment system was slow. No complementary meals offered even though it was an international flight.

YYZ
YVR
Mediocre 2.0

Pros: They had very bad service for 5 hours flight I asked two times I need a coffee but they didn’t give it for me and on that time I saw they serviced for two another guys just they said to me “we come back to you” but unfortunately they didn’t come back. No facilities for calling the crew. I am very angry for my flight Toronto to Vancouver specially the bad crews.

Cons: See and train the crew and look for your services for 5 hours flight.

Fri, 10 Jan
DUB
Dublin
DEN
Denver Intl
14h 49m
Mon, 20 Jan
DEN
Denver Intl
DUB
Dublin
17h 55m
€301
Trip: 11 days
7.3Good Show reviews
Overall 7.3 Good
Based on 24,484 reviews
Overall
7.3
Boarding
7.4
Comfort
7.1
Crew
7.8
Entertainment
6.9
Food
6.5
YYC
YVR
Good 7.0

Cons: First plane was newer, 2nd plane was older.

YHZ
YUL
Okay 5.0

Cons: Air Canada needs to update it's entertainment systems. On flights to and from my destination both the audio jack and screen were broken. Also, the flight did not receive any salads, leaving this vegan with slim pickings. Get it together, Air Canada!

YYZ
DUB
Excellent 8.3

Cons: Power outlet didn’t work in 34G so couldn’t get work done.

VIE
YYZ
Excellent 9.6

Pros: The crew was amazing. The economic seat (I always prefer to select aisle seat) was OK for me.

Cons: I often prefer to take Air Canada flight for the departure to any international cities, because it hardly happened to have any cancelled AC flights during my Air flight dates in my past years trips.

PHL
YYZ
Good 7.6

Cons: The flight and crew were very good. An hour late taking off with not explanation. Frustrating on an hour flight.

Mon, 23 Dec
DUB
Dublin
DEN
Denver Intl
13h 40m
Sat, 28 Dec
DEN
Denver Intl
DUB
Dublin
11h 50m
€673
Trip: 6 days
7.5Good Show reviews
Overall 7.5 Good
Based on 9,262 reviews
Overall
7.5
Boarding
7.2
Comfort
7.3
Crew
8.1
Entertainment
7.6
Food
6.2
BOS
KEF
Excellent 8.0

Cons: Nothing they could have done but screaming baby for hours was.most unpleasant

CDG
KEF
Mediocre 2.0

Cons: First they good have actually kept the flight. Instead I was rebooted on a flight that will get me home over three hours later than originally scheduled. And it could be even later since my connection is already delayed.

AMS
KEF
Excellent 9.6

Pros: Although I was in Economy, I got a window seat with no one next to me, which made things a lot less cramped.

CPH
KEF
Excellent 8.0

Pros: The crew ok. Seats not comfortable

Cons: Serve snacks at least on trans-atlantic flights.

BOS
KEF
Excellent 10.0

Pros: Crew great. Seats were tough.

Sat, 7 Mar
DUB
Dublin
DEN
Denver Intl
15h 30m
Sun, 22 Mar
DEN
Denver Intl
DUB
Dublin
17h 55m
€342
Trip: 15 days
8.1Excellent Show reviews
Overall 8.1 Excellent
Based on 27,122 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
FRA
SJO
Excellent 8.0

Cons: Mejorar las oferta de películas abordo

MUC
YVR
Mediocre 2.0

Cons: Flight left without us even though they knew our flight had landed and we were on our way. Then they rerouted us with a longer flight and our luggage didn’t make it.

FRA
BOG
Excellent 10.0

Pros: Crew was excellent

Cons: Nothing really. LH first class cabin is one of the best!

MUC
SFO
Excellent 10.0

Pros: The most comfortable coach seats I've ever been lucky enough to sit in (aisle and window in the first row of economy)! First time flying an A340-600, it's a great plane for a long trip.

JAX
IAD
Good 7.0

Cons: Leg room was terrible in economy and food was poor from the USA

Sun, 22 Dec
DUB
Dublin
DEN
Denver Intl
15h 15m
Sat, 28 Dec
DEN
Denver Intl
DUB
Dublin
19h 37m
€520
Trip: 7 days
7.4Good Show reviews
Overall 7.4 Good
Based on 22,250 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.8
ATL
LHR
Excellent 8.8

Pros: Overall good flight

Cons: Free snacks and drinks

MXP
LHR
Excellent 8.0

Pros: Crew was amazing.

Cons: First leg of our trip on British air on a smaller plane with lots of comfort and room. Our 2nd and long leg was on a larger and newer plane. Leg room and room for the tray table was so tight and uncomfortable for a long Flight. Paid extra for end seating and using British air for transfers through Heathrow as an American Air partner. Will try to avoid the extra cost in the future.

LAX
LHR
Excellent 8.0

Pros: ON time Flight

Cons: Nothing

DUS
LHR
Good 6.6

Pros: Crew was OK ,seat tight

Cons: More cushion and a little wider seat !

BHD
LHR
Mediocre 2.0

Pros: Nothing British airways was fine

Cons: Your website messed up and booked my flight for the wrong month. I booked sept 20 2019 and your site errored out. Eventually it booked the flight but apparently it was for oct 20, 2019 and I couldn’t get a refund because it was through kayak not British airways. I’m never using kayak ever again

Tue, 17 Dec
DUB
Dublin
DEN
Denver Intl
17h 30m
Mon, 6 Jan
DEN
Denver Intl
DUB
Dublin
18h 20m
€520
Trip: 21 days
8.1Excellent Show reviews
Overall 8.1 Excellent
Based on 27,122 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
NCE
MUC
Excellent 8.4

Pros: Small plane, decent space, short flight.

Cons: Legroom.

BOS
FRA
Excellent 8.6

Cons: The touchscreen was so buggy and unresponsive that I opted to sleep instead of trying to find something to watch on it.

FRA
YYZ
Excellent 10.0

Pros: Seat was both comfortable and spacious. Crew were very attentive and personable.

Cons: Really great flight. Can’t say enough about it.

SOF
MUC
Good 6.0

Cons: I do not like that mono do sale me a ticket with no baggage and never will by a ticket from this company again!

ATH
MUC
Excellent 8.0

Pros: Great crew, decent food, plenty of wine and other drinks, on-time departure and arrival.

Cons: Uncomfortable cramped seats, USB port on seat-back video display does not charge a connected device.

Fri, 22 Nov
DUB
Dublin
DEN
Denver Intl
23h 07m
Fri, 29 Nov
DEN
Denver Intl
DUB
Dublin
17h 56m
€622
Trip: 8 days
8.1Excellent Show reviews
Overall 8.1 Excellent
Based on 27,155 reviews
Overall
8.1
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.5
BOS
TPA
Excellent 10.0

Pros: Was boarded promptly

FCO
JFK
Mediocre 2.0

Pros: Very uncomfortable seats and careless crew

Cons: The worst food and service ever. Very disappointed

LAX
JFK
Excellent 10.0

Pros: Quiet economy service let me sleep on the redeye.

FLL
LGA
Excellent 8.8

Pros: Crew did the best they could keeping us aware of the extensive delays flying in to LaGuardia. The captain made himself available to answer questions from passengers at the gate early on and I thought that was a great gesture.

Cons: Nothing could have been better. Any issues with the flight were delays beyond the crew's control.

AMS
MSP
Excellent 10.0

Cons: even though I was in Delta One -- the seats in the reclined position were kind of narrow, arm rests in the way made it difficult to turn over, IF I were trying to sleep. but i loved being in first class -- the only way to go on a long flight :)

Sat, 21 Dec
DUB
Dublin
DEN
Denver Intl
16h 29m
Fri, 3 Jan
DEN
Denver Intl
DUB
Dublin
14h 05m
€792
Trip: 14 days
7.4Good Show reviews
Overall 7.4 Good
Based on 22,250 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.8
LHR
KEF
Excellent 9.0

Cons: Some form of entertainment

BOS
JFK
Excellent 8.0

Pros: Easy and quick boarding.

Cons: Seat space was tight

ACC
LHR
Excellent 8.0

Pros: The food was good, the crew was friendly, and the plane was clean.

Cons: flight out of Ghana was delayed by 2 hours.

LHR
ARN
Excellent 10.0

Pros: Club Europe- excellent attentive crew, excellent food!

Cons: Nothing! They were the best!

SIN
SYD
Okay 5.6

Pros: Gate was super close to the lounge.

Cons: The security check at the gate requires one to leave the comfort of the lounge early incase of queues and then wait in an over crowded lounge with the other passengers (so the fact you are business/first or have one world status does little to ease the burden of boarding. The lounge also did not offer red eye passengers a meal and the on board meal service is slow (so if you are hungry it eats into precious sleeping time). The breakfast wakeup was also disappointing. My meal of choice was not available and the whole process was rushed like a fast food restaurant. Overall I am disappointed by the club world offering on this route and would not pay for it again unless intended to get on and just sleep for the entire journey.

Show more results
*
Prices are per person, are for e–tickets and include all taxes & fees in EUR.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car hires can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

1
  • Return
  • One-way
  • Multi-city
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First