DEN

€318 Find Cheap Flights to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Denver departing on 18/11. 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 Denver

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

Cheap Flights to Denver

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

Mon, 8 Sep - Sun, 21 Sep
Icelandair Logo
14:15 - 18:55DUB-DEN
11h 40m1 stop
Icelandair Logo
16:40 - 13:15DEN-DUB
13h 35m1 stop
€424Icelandair
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Wed, 3 Sep - Mon, 8 Sep
Icelandair Logo
12:15 - 18:55DUB-DEN
13h 40m1 stop
Icelandair Logo
16:40 - 13:15DEN-DUB
13h 35m1 stop
€434Icelandair
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Tue, 14 Oct - Wed, 22 Oct
Scandinavian Airlines Logo
12:40 - 22:46DUB-DEN
41h 06m2 stops
Scandinavian Airlines Logo
12:59 - 11:50DEN-DUB
39h 51m2 stops
€442Scandinavian Airlines
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Thu, 2 Oct - Sun, 5 Oct
Scandinavian Airlines Logo
19:05 - 23:24DUB-DEN
35h 19m2 stops
Scandinavian Airlines Logo
06:15 - 18:15DEN-DUB
29h 00m2 stops
€450Scandinavian Airlines
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Wed, 3 Sep - Mon, 8 Sep
Lufthansa Logo
05:55 - 15:35DUB-DEN
16h 40m1 stop
Lufthansa Logo
16:15 - 19:15DEN-DUB
20h 00m1 stop
€455Lufthansa
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Wed, 27 Aug - Sun, 31 Aug
British Airways Logo
08:30 - 16:25DUB-DEN
14h 55m1 stop
British Airways Logo
18:35 - 14:15DEN-DUB
12h 40m1 stop
€478British Airways
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Wed, 29 Oct - Fri, 7 Nov
British Airways Logo
20:30 - 16:25DUB-DEN
25h 55m1 stop
British Airways Logo
17:30 - 15:05DEN-DUB
14h 35m1 stop
€481British Airways
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Wed, 27 Aug - Sun, 31 Aug
Aer Lingus Logo
15:25 - 17:59DUB-DEN
9h 34mdirect
Aer Lingus Logo
19:55 - 11:40DEN-DUB
8h 45mdirect
€510Aer Lingus
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Mon, 4 Aug - Mon, 18 Aug
Aer Lingus Logo
15:25 - 17:59DUB-DEN
9h 34mdirect
Aer Lingus Logo
19:55 - 11:40DEN-DUB
8h 45mdirect
€542Aer Lingus
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Sat, 1 Nov - Wed, 5 Nov
Lufthansa Logo
05:10 - 14:40DUB-DEN
15h 30m1 stop
Lufthansa Logo
11:15 - 17:10DEN-DUB
22h 55m2 stops
€685Lufthansa
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KAYAK's insights & trends for flights to Denver

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

What is the cheapest month to fly to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Denver, 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 to Denver is November, where tickets cost €622 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Ireland is €835 and €814 respectively. For one-way flights, the best month to travel is November with an average price of €622.

How far in advance should I book a flight to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Denver, 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, 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 – Book Cheap Denver Plane Tickets

Low seasonJanuary
High seasonMay
Cheapest flight€318
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flight from Dublin to Denver

When to book flights to Denver

Are your dates flexible? Find out the best times to travel to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Denver based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Denver flights

  • How far is Denver Intl Airport from central Denver?

    You’ll need to travel 30 km to reach the Denver city centre from Denver Intl Airport.

  • What is the name of Denver’s airport?

    There is only 1 airport in Denver, called Denver Intl Airport (DEN). It can also be referred to as Denver or Denver Intl.

  • How much is a flight to Denver?

    On average, a flight to Denver costs €1,006. The cheapest price found on KAYAK in the last 2 weeks cost €848 and departed from Dublin Airport.

  • What is the cheapest day to fly to Denver?

    Based on KAYAK data, the cheapest day to fly to Denver is Friday where round-trip tickets can be as cheap as €709. On the other hand, the most expensive day to fly is Monday, where round-trip prices are €864 on average.

  • How does KAYAK find such low prices on flights to Denver?

    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 to Denver.

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

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

  • What is the Hacker Fare option on flights to Denver?

    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 to Denver 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 to Denver?

    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 to Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Denver is generally in the morning, when round-trip flights cost €745 on average. The most expensive time of day to fly to Denver is generally in the evening, which is peak travel time and where the average cost of a ticket is €870.

  • How many direct flights to Denver are there each week?

    Each week there are around 6 direct flights from within Ireland to Denver. The most common day for departures is Thursday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Denver

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Denver flight deals.

Prefer to fly direct to Denver Intl?

Find which airlines fly direct to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Ireland to Denver Intl

Monday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Tuesday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Wednesday

ANA, Aer Lingus, Aeromexico, +63 more

ANA, Aer Lingus, +64 more

Thursday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Friday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Saturday

ANA, Aer Lingus, Aeromexico, +65 more

ANA, Aer Lingus, +66 more

Sunday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

See more direct flights

Direct returns

Denver Intl to Ireland

Monday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Tuesday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Wednesday

ANA, Aer Lingus, Aeromexico, +63 more

ANA, Aer Lingus, +64 more

Thursday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Friday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Saturday

ANA, Aer Lingus, Aeromexico, +65 more

ANA, Aer Lingus, +66 more

Sunday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

See more direct flights
See more direct flights

Top 3 airlines flying to Denver

 
See real verified KAYAK customer reviews for airlines flying to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Denver. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Denver? 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 1117 reviews
6.8Entertainment
7.9Crew
7.0Comfort
7.2Boarding
6.4Food
Airline reviews

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.

10.0 ExcellentAnonymous, Jun 2025MAN - MCO
Read more Aer Lingus reviews

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.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

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.

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

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.

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.

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

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

Our luggage didn’t arrive with us, that puts a damper on the whole trip.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

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Everything you need to know for your flight to Denver

Information on the airport you'll fly into in Denver

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