DUB - DEN

$348 Find Cheap Flights from Dublin 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 from Dublin to Denver departing on 6/2. 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, 0 bags

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 in flight searches from Dublin to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Dublin to Denver, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$450
Typical prices: $802-$1,147
Icelandair
Fri 6/5Sun 6/7
DUB - DEN • 1 stop
Cheapest non-stop
$534
Aer Lingus
Sat 5/2Mon 5/11
DUB - DEN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
American Airlines' Main Cabin Extra includes early boarding.
Allow three hours for U.S. pre-clearance at Dublin.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
Mon, Wed, Fri, Sat, Sun
You can fly direct with Aer Lingus. Average duration is 0
Direct flights
Direct flights
+1
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Direct flights
Direct flights
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Top airlines
Cheapest • from $450 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $635 (round-trip)
Shortest trip • 13h 23m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 84% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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Flight Deals
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Flight Deals

Cheap Flights from Dublin to Denver (DUB-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dublin 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 round-trip flight deals from Dublin to Denver

Fri, Jun 5 - Sun, Jun 7
Icelandair Logo
12:15 pm - 12:40 pm
DUB
-
DEN
31h 25m
1 stop
Icelandair Logo
4:40 pm - 1:15 pm
DEN
-
DUB
13h 35m
1 stop
$450Icelandair
Tue, May 12 - Sat, Sep 19
Icelandair Logo
2:15 pm - 7:00 pm
DUB
-
DEN
11h 45m
1 stop
Icelandair Logo
4:40 pm - 11:05 am
DEN
-
DUB
11h 25m
1 stop
$468Icelandair
Fri, Sep 4 - Mon, Sep 14
Icelandair Logo
12:15 pm - 12:40 pm
DUB
-
DEN
31h 25m
1 stop
Icelandair Logo
4:40 pm - 1:15 pm
DEN
-
DUB
13h 35m
1 stop
$474Icelandair
Thu, May 21 - Mon, May 25
Icelandair Logo
2:15 pm - 7:00 pm
DUB
-
DEN
11h 45m
1 stop
Icelandair Logo
4:40 pm - 1:15 pm
DEN
-
DUB
13h 35m
1 stop
$477Icelandair
Wed, Apr 22 - Mon, Apr 27
British Airways Logo
8:35 am - 4:20 pm
DUB
-
DEN
14h 45m
1 stop
British Airways Logo
6:30 pm - 6:40 pm
DEN
-
DUB
17h 10m
1 stop
$483British Airways
Thu, Jun 11 - Sun, Jun 21
Icelandair Logo
2:15 pm - 12:40 pm
DUB
-
DEN
29h 25m
1 stop
Icelandair Logo
4:40 pm - 1:15 pm
DEN
-
DUB
13h 35m
1 stop
$484Icelandair
Tue, Sep 1 - Wed, Sep 16
Icelandair Logo
2:15 pm - 7:00 pm
DUB
-
DEN
11h 45m
1 stop
Icelandair Logo
4:40 pm - 1:15 pm
DEN
-
DUB
13h 35m
1 stop
$488Icelandair
Fri, Sep 4 - Mon, Sep 14
Icelandair Logo
12:15 pm - 7:00 pm
DUB
-
DEN
13h 45m
1 stop
Icelandair Logo
4:40 pm - 1:15 pm
DEN
-
DUB
13h 35m
1 stop
$499Icelandair
Sun, Jun 14 - Wed, Jun 24
Multiple Airlines Logo
9:30 am - 11:59 pm
DUB
-
DEN
21h 29m
1 stop
Multiple Airlines Logo
6:40 pm - 6:00 pm
DEN
-
DUB
16h 20m
1 stop
$500Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
British Airways Logo
8:30 pm - 4:20 pm
DUB
-
DEN
26h 50m
1 stop
British Airways Logo
6:30 pm - 2:35 pm
DEN
-
DUB
13h 05m
1 stop
$502British Airways
Booking Insights

KAYAK's insights & trends for Dublin to Denver flights

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

How much is a round-trip flight from Dublin to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Dublin to Denver departing in June.

What’s the cheapest day of the week to fly from Dublin to Denver?

The average price of all round-trip flights from Dublin to Denver clicked on KAYAK for each day over the last 12 months.

When flying from Dublin to Denver, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to Dublin, you’ll find the best rates on Thursdays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Dublin to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dublin 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 from Dublin to Denver is September, where tickets cost $596 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $971 and $959 respectively.

Can I save money by flying with a layover from Dublin to Denver?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $820 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dublin 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 on the flight from Dublin to Denver, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from Dublin to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines and DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Ramsey Qubein

Ramsey Qubein

Expert on DUB

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Good to know

Low seasonJanuary
Cheapest flight$348
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 21% increase in price.
Flight from Dublin to Denver

When to book flights from Dublin to Denver

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

FAQs for booking flights from Dublin to Denver

  • Are there hotels at Denver Airport?

    Yes, the Westin Denver International Airport Hotel and Conference Centre is a stone’s throw from the main terminal - you’ll find it just above the transit centre.

  • How do I get from the airport to Denver City centre?

    You can easily catch the A-line commuter train, which departs every 15min during peak travel times and every 30min from 03:00 to 05:00 and 18:30 to 01:00. The train will get you to Denver Union Station in around 37min and an unlimited day pass costs around €13. The Airport also operates a bus line called Skyline, which runs from 03:30 until midnight. Journey time to central Denver usually takes about 1h. Again, an unlimited day pass costs around €13. Taxis on the other hand, can cost up to $56 (or more) (€48) to central Denver and will take 40min. Another option is Rideshare, which is a private car shared with other passengers. At around $25-40 (€22-34) and also takes around 40min to downtown area.

  • What is the cheapest flight from Dublin to Denver?

    In the last 3 days, the lowest price for a flight from Dublin to Denver was $348 for a one-way ticket and $450 for a round-trip.

  • Do I need a passport to fly between Dublin and Denver?

    Yes

  • Which airlines offer Wi-Fi service onboard planes from Dublin to Denver?

    Only Iberia offers inflight Wi-Fi service on the Dublin to Denver flight route.

  • Which aircraft models fly most regularly from Dublin to Denver?

    The Airbus A330-200 is the aircraft model that flies most regularly on the Dublin to Denver flight route.

  • Which airline alliances offer flights from Dublin to Denver?

    oneworld, and Star Alliance are the airline alliances operating flights between Dublin and Denver, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Dublin to Denver, United Airlines or Aer Lingus?

    The two airlines most popular with KAYAK users for flights from Dublin to Denver are United Airlines and Aer Lingus. With an average price for the route of $879 and an overall rating of 7.4, United Airlines is the most popular choice. Aer Lingus is also a great choice for the route, with an average price of $808 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Dublin 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 from Dublin to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Dublin 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 Dublin 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 to Dublin with another airline. Booking your flights between Dublin and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dublin 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 from Dublin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Dublin to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $691 or less one-way.
  • You can have food delivered from any of the restaurants in Denver International Airport (DEN) to wherever you are in the airport including your flight gate. Download the AtYourGate app and select anything you like. Food arrives in 30min or less.
  • Denver Airport is renowned for being pet friendly. You’ll find a pet resort called Paradise 4 Paws. Open 24/7, your pet can walk around the 25,000 square foot area, have a massage or rest in a private suite.
  • If you have time to kill, there is plenty to see and do. Denver is the largest airport in America so you could take yourself for a walk. Alternatively, you could take in one of the art exhibitions or gaze at the view of the Rockies from Gates C23 and C24.
  • If you fancy some fresh air, head to the outdoor plaza in Denver Airport. You’ll find a pop-up park there in summer and an outdoor ice-skating rink in winter.

Prefer to fly direct from Dublin to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Dublin to Denver Intl.
Find which airlines fly direct from Dublin Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Dublin to Denver Intl

Monday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Friday

Aer Lingus

Aer Lingus

Saturday

Aer Lingus

Aer Lingus

Sunday

Aer Lingus

Aer Lingus

See more direct flights

Direct returns

Denver Intl to Dublin

Monday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Friday

Aer Lingus

Aer Lingus

Saturday

Aer Lingus

Aer Lingus

Sunday

Aer Lingus

Aer Lingus

See more direct flights

Reviews of the top 3 airlines serving from Dublin to Denver

 
See real verified KAYAK customer reviews for airlines flying from Dublin to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. 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 Dublin 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.
7.4
United AirlinesOverall score based on 9427 reviews
8.1Crew
6.6Food
7.3Comfort
7.1Entertainment
7.7Boarding
Airline reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

6.0 GoodAnonymous, Mar 2026
SFO - DEN
Read more United Airlines reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

I just think it’s unfortunate that Airlines have completely abandoned the idea of serving any kind of decent or even real food on flights, not even on a four hour flight!? Those days are gone, I guess.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

After changing the departure gate 5 times making us mo e from one side of the airport to the other and then back the flight was delayed nearly 2 hours. The male flight attendant had a bad attitude with the guest being condescending, disrespectful with people who were already on edge.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

It would have been nice if American tried to care.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I booked 1st class, my flights were changed and I was sitting in the middle at the back of the plane. A far cry from the 1st class I purchased for my flights. I am grateful I arrived on time.

Movie selections were very limited. Meals were not f So good.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

AA is flying sub par aging 787's to Tokyo. I fly other 787's long haul and these are at the bottom. Seats don't work well, tray tables don't work well and were dirty. The flight was great, the plane was not.

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Everything you need to know for your flight from Dublin to Denver

Information on your arrival and departure airports