€417 Find Cheap Flights from Dublin to Denver – Compare and Save

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.

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.

Among airlines operating Dublin to Denver flights:

• Aer Lingus: offers extra legroom; offers free seat selection
• American Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only Aer Lingus operates flights between Dublin and Denver.

Flights from Dublin to Denver usually depart from Dublin (DUB) and arrive at Denver Intl (DEN).

Here are some options for this route, based on selected ticket types and cabin classes:

• Aer Lingus: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Economy class
• Iberia: a cabin bag and a checked bag in Economy class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Two cabin classes are available on flights from Dublin to Denver:

• Economy class
• Business Class

On this route, stopover flights are cheaper than direct options on average. Stopover fares average €438 return via Philadelphia (PHL), compared with €658 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge €23–€86 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A330-200 family is used most often on this route, operated mainly by American Airlines and British Airways. Other aircraft seen on the route include Airbus A321neo variants.

One-stop flights from Dublin to Denver most commonly connect through:

• Reykjavik Keflavik Intl (KEF) – 27% of one-stop connections
• London Heathrow (LHR) – 25% of one-stop connections
• Dallas/Fort Worth (DFW) – 21% of one-stop connections
• Chicago O'Hare Intl (ORD) – 9% of one-stop connections

Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 38% on the Dublin to Denver route. Thursday is the cheapest departure day at €453 return on average, while Saturday is the most expensive at €724, a difference of €271. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Dublin to Denver route, 12% of flights were delayed in the past 3 months, with delays averaging 1 hour 29 minutes.

Union Station Denver is one of the most viewed places in Denver on KAYAK.

These are the earliest and latest flight times available from Dublin to Denver:

• Earliest: departs at 15:25 and lands at 01:15
• Latest: departs at 15:25 and lands at 01:15.

The flight takes about 9h 50m.

Last-minute fares on this route (booked within 2 weeks of departure) run 24% above the route average of €598. Book 3 weeks before departure for the lowest fares.

A direct flight from Dublin to Denver takes 9h 50m, covering 11,338 km.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about €544 to €3,469. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from Dublin to Denver are currently in line with typical prices for this route. Average one-way fares are about €609.

Aer Lingus is the only airline operating Dublin to Denver flights. 88% of its flights are on time.

Afternoon flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time of 12h 11m, compared to 12h 24m via Minneapolis St Paul (MSP) and 12h 30m via Washington, D.C. Dulles Intl (IAD).

Denver is 7 hours behind Dublin (Mountain Time vs Irish Time). Plan for the time shift when scheduling connections or first-day activities.

Denver Intl Airport (DEN) hosts 5 major car hire companies, with daily rates starting from around €13 for economy cars. Top options include:
• Routes Car & Truck Rentals
• Ace
• NU Car
• Europcar
• Hertz

Return flights from Dublin to Denver range from €469 to €755, with an average of €598 over the past 12 months. Anything below €469 counts as a good deal.

Aer Lingus is the only airline on the Dublin to Denver route offering in-flight Wi-Fi. Pricing depends on fare class.