DUB - DEN

$379 Find Cheap Flights from Dublin to Denver - Compare and Save

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 7/8. 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
$530
Typical prices: $998-$640
Multiple Airlines
Wed 6/24Sun 6/28
DUB - DEN • 1 stop
Cheapest non-stop
$694
Aer Lingus
Mon 9/7Mon 9/28
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 adds early boarding and complimentary drinks.
At Dublin, allow three hours for U.S. pre-clearance before flying to Denver.
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 9h 50m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top airlines
Cheapest • from $555 (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 $691 (round-trip)
Shortest trip • 13h 25m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 83% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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We hope you love your trip to Denver!
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

Wed, Jun 24 - Sun, Jun 28
Multiple Airlines Logo
12:40 pm - 11:55 pm
DUB
-
DEN
18h 15m
1 stop
Multiple Airlines Logo
5:45 pm - 11:50 am
DEN
-
DUB
11h 05m
1 stop
$530Multiple Airlines
Sat, Jun 20 - Fri, Jun 26
American Airlines Logo
1:45 pm - 9:25 pm
DUB
-
DEN
14h 40m
1 stop
American Airlines Logo
8:48 am - 6:30 am
DEN
-
DUB
14h 42m
1 stop
$555American Airlines
Tue, Jun 30 - Sat, Sep 5
Finnair Logo
12:40 pm - 7:36 pm
DUB
-
DEN
13h 56m
1 stop
Finnair Logo
2:09 pm - 11:50 am
DEN
-
DUB
14h 41m
1 stop
$595Finnair
Mon, Oct 5 - Mon, Oct 12
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
$610Icelandair
Tue, Jun 23 - Wed, Jul 8
Finnair Logo
9:30 am - 12:17 am
DUB
-
DEN
21h 47m
1 stop
Finnair Logo
2:34 pm - 11:50 am
DEN
-
DUB
14h 16m
1 stop
$617Finnair
Tue, Jun 23 - Wed, Jul 8
Finnair Logo
9:30 am - 12:17 am
DUB
-
DEN
21h 47m
1 stop
Finnair Logo
2:34 pm - 11:50 am
DEN
-
DUB
14h 16m
1 stop
$620Finnair
Tue, Jun 30 - Sat, Sep 5
American Airlines Logo
12:40 pm - 7:36 pm
DUB
-
DEN
13h 56m
1 stop
American Airlines Logo
6:40 pm - 2:25 pm
DEN
-
DUB
12h 45m
1 stop
$634American Airlines
Tue, Jun 30 - Sat, Sep 5
Iberia Logo
12:40 pm - 11:55 pm
DUB
-
DEN
18h 15m
1 stop
Iberia Logo
2:09 pm - 11:50 am
DEN
-
DUB
14h 41m
1 stop
$656Iberia
Fri, Jul 10 - Wed, Jul 22
JetBlue Logo
10:40 am - 9:03 am
DUB
-
DEN
29h 23m
1 stop
JetBlue Logo
2:09 pm - 9:00 am
DEN
-
DUB
11h 51m
1 stop
$665JetBlue
Mon, Jun 29 - Fri, Jul 10
Iberia Logo
12:40 pm - 11:55 pm
DUB
-
DEN
18h 15m
1 stop
Iberia Logo
12:39 pm - 9:45 am
DEN
-
DUB
14h 06m
1 stop
$669Iberia
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 Wednesdays 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 February, where tickets cost $462 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,038 and $963 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.

No, with an average price for the route of $871, prices are generally cheapest when you fly direct.

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 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 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 seasonApril
Cheapest flight$379
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 18% 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 5 days, the lowest price for a flight from Dublin to Denver was $379 for a one-way ticket and $530 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?

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

  • On which days can I fly direct from Dublin to Denver?

    You can catch a nonstop flight from Dublin to Denver on on Monday, Wednesday, Friday, Saturday, and Sunday.

  • 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 $864 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 $701 and an overall rating of 7.3.

  • 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 $689 or less one-way and $544 or less round-trip.
  • 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 9808 reviews
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

8.0 ExcellentJane, Jun 2026
YYZ - DEN
Read more United Airlines reviews

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The rear seat on the second leg should be illegal. There’s no way you should make somebody sit that close to the washroom. Very awkward.

Vegetarian food option was very poor. Effectively, overcooked rice ("risotto"). Zero protein which is always disappointing with no vegetables and poorly seasoned. Basically had lots of carbs on 6-hour flight. Not acceptable for business class in 2026. Flight was otherwise very good.

Small plane. Tight seating . What can one say except that it was fast!

Flight crew was very cold and stood around a lot talking to each other.

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

On time, only a little turbulence, very competent and caring attendants. Clear information.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

On a four hour delayed flight now on seats back end of the plane instead front-

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

Our flight from JFK to Madrid was delayed. We had to go from one side of the Madrid airport (Terminal 4s to the far end of terminal 4 - Gate K98) to our gate in less than 30 minutes. Put passport control and security/baggage check and that’s very hard unless you’re Usain Bolt. I called Iberia Airlines and the telephone customer service told me that I was going to have to pay to re-book. Luckily the help desk in the airport (who was dealing with dozens of people from the same JFK-Madrid flight) did not charge us extra to reschedule to a flight 8 hours later. They also gave us a voucher for breakfast and lunch. Glad the actual person at the airport had some actual sense.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

Boarding was smooth and seamless and the flight was without incident.

Very hard to beat a British Airways international flight…the crews are always so amazing! One flight attendant that really stood out was Emma…she was very personable and accommodating with any request we had!!

Our flight was repeatedly delayed for maintenance problems: scheduled for 9.30am, eventually delayed to 7pm! Very very inconvenient! AA should have provided a substitute plane much earlier.. On the other hand, Customer Service crew in Charlotte helped us to reach NY (LGA) by late afternoon. Thank you Patricia!! The actual flight was quick and very comfortable. As always a. excellent, professional crew. [no food on a a short hop).

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

Little time between flight from Dallas to flight to Gainesville. We chose this one, 43 minutes between, because the price for a connection with at least an hour between, was so much higher. Had to ask passengers on the Dallas flight to please allow us to deplane ahead of them. The economy passengers allowed this. We had to walk very fast to the next gate, 35 gates away. Thankfully all in the same terminal. Getting to the small Gainesville plane was a little confusing as you enter an area that is boarding many small planes at the same time. We stood in the wrong line for about 15 seconds before realizing it was not our Gainesville flight. Since I had boarded at this gate in the past, I knew to check the signs carefully so we weren’t lost. The first class seat experience was wonderful. I really enjoyed the upgrade. We were offered an alcohol drink as soon as we sat down. I got something different but it was a great gesture especially since we really had to hurry to make the flight. We had packed expecting we might miss this connection, but made it. Our luggage didn’t miss the flight. American Airlines delivered our bags to our home the next day. That was very convenient!

The plane was large, not full, but one with 3 seats near each window and 4 in a row in the middle of the plane. There were screens on the backs of the seats for entertainment and information. To use the entertainment one needs ear plugs that physically plug into the screen. My husband had some he let me use as I only had blue tooth type. The stewards gave out some headphones to some, but when my neighbor asked for some, the steward said no. So maybe they ran out? Idk. Bring the old kind of headphones or earbuds if you want entertainment in case this is the type of entertainment offered. We had a very tight connection in Miami. 43 minutes. The other economy passengers allowed us to get ahead of them because I asked if we could since we were near boarding time for our next flight and 35 gates away. They were extremely kind. First class wasn’t going to allow us to pass through. We did make the next flight. Our baggage didn’t, but they were delivered to us the next day and we were prepared with essentials in our carry on packs.

Food is what you expect on a plane. Nothing gluten free. But that is expected. Drinks, apple juice, was fine. Seat, what I expected. Fine.

This was my first flight on Aer Lingus and it was great. The plane wasn't full so I could move to a seat with extra room. The food was pretty good for airline food and the staff was nice and attentive. I enjoyed the media provided during my 10 hour flight. We arrived home early and it's always good to be home!

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

Information on your arrival and departure airports