An escalator in a modern building with geometric wall patterns and overhead lighting.

$380 Cheap Flights from Dublin (DUB) to Denver (DEN)

View $380 flight on Wed, Sep 2, 2026Opens in a new window

Popular airlines from Dublin Airport (DUB) to Denver Intl. Airport (DEN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Dublin to Denver (DUB-DEN)

Prices were available within the past 7 days and start at $380 for one-way flights and $647 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Fri, Aug 21 - Sun, Aug 30
DUB
Dublin
DEN
Denver
$647 Roundtrip, found 6 days ago
$647
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Fri, Aug 21 from Dublin to Denver, returning Sun, Aug 30, priced at $647 found 6 days ago
JetBlue Airways
Wed, Aug 26 - Mon, Aug 31
DUB
Dublin
DEN
Denver
$702 Roundtrip, found 4 days ago
$702
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Wed, Aug 26 from Dublin to Denver, returning Mon, Aug 31, priced at $702 found 4 days ago
JetBlue Airways
Wed, Aug 26 - Sat, Aug 29
DUB
Dublin
DEN
Denver
$706 Roundtrip, found 4 hours ago
$706
Roundtrip
found 4 hours ago
Select JetBlue Airways flight, departing Wed, Aug 26 from Dublin to Denver, returning Sat, Aug 29, priced at $706 found 4 hours ago
JetBlue Airways
Thu, Aug 27 - Thu, Sep 3
DUB
Dublin
DEN
Denver
$728 Roundtrip, found 7 hours ago
$728
Roundtrip
found 7 hours ago
Select JetBlue Airways flight, departing Thu, Aug 27 from Dublin to Denver, returning Thu, Sep 3, priced at $728 found 7 hours ago
Icelandair
Wed, Mar 31 - Wed, Apr 14
DUB
Dublin
DEN
Denver
$730 Roundtrip, found 4 days ago
$730
Roundtrip
found 4 days ago
Select Icelandair flight, departing Wed, Mar 31 from Dublin to Denver, returning Wed, Apr 14, priced at $730 found 4 days ago
Finnair
Wed, Sep 2 - Wed, Sep 23
DUB
Dublin
DEN
Denver
$743 Roundtrip, found 4 days ago
$743
Roundtrip
found 4 days ago
Select Finnair flight, departing Wed, Sep 2 from Dublin to Denver, returning Wed, Sep 23, priced at $743 found 4 days ago
British Airways
Thu, Oct 22 - Tue, Oct 27
DUB
Dublin
DEN
Denver
$743 Roundtrip, found 6 days ago
$743
Roundtrip
found 6 days ago
Select British Airways flight, departing Thu, Oct 22 from Dublin to Denver, returning Tue, Oct 27, priced at $743 found 6 days ago
Aer Lingus
Wed, Sep 9 - Fri, Sep 25
DUB
Dublin
DEN
Denver
$753 Roundtrip, found 5 days ago
$753
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Wed, Sep 9 from Dublin to Denver, returning Fri, Sep 25, priced at $753 found 5 days ago
Finnair
Wed, Sep 2 - Wed, Sep 23
DUB
Dublin
DEN
Denver
$755 Roundtrip, found 4 days ago
$755
Roundtrip
found 4 days ago
Select Finnair flight, departing Wed, Sep 2 from Dublin to Denver, returning Wed, Sep 23, priced at $755 found 4 days ago
Iberia
Thu, Sep 10 - Tue, Sep 15
DUB
Dublin
DEN
Denver
$769 Roundtrip, found 4 days ago
$769
Roundtrip
found 4 days ago
Select Iberia flight, departing Thu, Sep 10 from Dublin to Denver, returning Tue, Sep 15, priced at $769 found 4 days ago

Find the cheapest month to fly from Dublin (DUB) to Denver (DEN)

October is typically the cheapest month to fly

From $425 - $1,024 per traveler.

What you need to know for your flight from Dublin to Denver Intl.

Dublin (DUB) to Denver (DEN) at a glance

Travel between Dublin (DUB) and Denver (DEN) with a selection of airlines catering to this international long-haul route. Evaluate your options among full-service and budget carriers to discover the travel plan that aligns with your budget and schedule as you prepare to experience Denver's iconic attractions and vibrant neighborhoods. Here, you'll find essential information for flights departing from Dublin Airport (DUB) to Denver International Airport (DEN).

  • Fastest flight duration: around 9h 30m non-stop
  • Route distance: roughly 4,400 miles (7,080 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $320–$1155, depending on seasonality and how far ahead you book

Flights from Dublin Airport (DUB) to Denver International Airport (DEN)

Here are the top airlines travelers prefer for flights from Dublin to Denver, highlighting options for both non-stop and one-stop journeys. Common layover spots include Keflavik International Airport (KEF) with a layover of about 1 hour, Heathrow Airport (LHR) with approximately 2 hours and 15 minutes, and O'Hare International Airport (ORD) with a 1-hour stop. This variety allows you to tailor your travel plans by considering price, total duration, and cabin class to find the perfect itinerary.

  • American Airlines: This full-service airline provides both non-stop and one-stop options, with one-way ticket prices generally falling between $320 and $1120. It represents about 34% of the departures along this route, featuring an average non-stop flight duration of 9 hours and 30 minutes.
  • Aer Lingus: Offering a full-service experience, Aer Lingus presents non-stop and one-stop flights, with one-way fares typically ranging from $380 to $1175. It makes up approximately 32% of the departures for this route, with a standard non-stop travel time of 9 hours and 30 minutes.
  • Icelandair: As a full-service airline, Icelandair specializes in one-stop flights, with one-way fares usually between $585 and $970. It accounts for around 16% of departures on this route, with an in-flight duration of 11 hours and 15 minutes, leading to a total journey time of about 13 hours and 45 minutes, including layovers.
  • British Airways: This full-service carrier provides one-stop service, with one-way fares typically ranging from $705 to $1145. British Airways contributes roughly 7% of the departures on this route, featuring an in-flight time of 11 hours and 15 minutes, and a total travel duration of approximately 13 hours and 45 minutes when factoring in layovers.
  • JetBlue Airways: A low-cost option, JetBlue offers one-stop services with one-way fares generally falling between $400 and $720. It accounts for about 5% of departures on this route, with an in-flight duration of 11 hours and 15 minutes, leading to a total journey time of around 13 hours and 45 minutes, including layovers.

Alternative routes from Dublin (DUB) to Denver (DEN)

  • Dublin to Broomfield (DUB-BJC): Located approximately 24 miles from Denver International Airport (DEN), Rocky Mountain Metropolitan Airport (BJC) serves as a convenient option.
  • Dublin to Fort Collins (DUB-FNL): Fort Collins-Loveland Municipal Airport (FNL) lies about 45 miles from Denver International Airport (DEN), providing easy access to the region.
  • Dublin to Colorado Springs (DUB-COS): Colorado Springs Airport (COS) is situated roughly 73 miles from Denver International Airport (DEN), making it another viable travel choice.

How to find the best prices for flights from Dublin (DUB) to Denver (DEN)

Getting some of the best deals on flights from Dublin to Denver is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, although most travelers tend to book at least 2 months ahead. Morning departures (5am-12pm) generally offer lower prices, whereas Afternoon flights (12pm-6pm) are more popular. Additionally, flying on Saturday not only provides cheaper fares but is also the most sought-after travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Denver International Airport from Dublin Airport

Denver welcomes travelers from Dublin with a range of transport options based on price, convenience, and proximity. For departures, Dublin Airport is roughly a 15-minute drive (covering about 8 miles) from central Dublin. Here's how to reach Denver efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Denver, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Denver International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Denver International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Denver International Airport, Jeppesen Terminal Station, a metro station, is located about 0.1 miles away on foot, providing easy access to public transport into the city.

Frequently asked questions

How much does a flight from Dublin (DUB) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $380 and cheap return flights from $647 Dublin (DUB) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights usually range from $677 to $3710, and return flights typically cost between $653 and $5968. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Dublin (DUB) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
The cheapest month to fly from DUB to DEN is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
Aer Lingus offers around 7 weekly direct flights from DUB to DEN.
What is the cheapest airline that flies from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
Iberia is one of the cheapest airlines offering nonstop flights from Dublin (DUB) to Denver Intl. (DEN), with round-trip tickets starting from around $635. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Dublin (DUB) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Dublin (DUB) to Denver, CO (DEN) will differ from traveler to traveler. If you like to fly early, Aer Lingus offers early morning flights. If price is the most important factor, Aer Lingus typically offers the lowest fares. Aer Lingus also offers the most daily flights from Dublin to Denver, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
There are approximately 1 nonstop flights per day from (DUB) to Denver Intl. (DEN). For more options, look at flights that include layovers.
What is the earliest flight from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Dublin (DUB) to Denver, CO (DEN) usually departs at around 5:00 AM, with options from Lufthansa, Condor, and Alaska Airlines. This is a seasonal service active in March, and an early flight can help you make the most of your time in Denver. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Dublin (DUB) to Denver (DEN) are in the late morning, from 9am to noon. About 39% of passengers prefer this time window. Many major carriers, including UA:UA, AA:AA, and AC:AC, offer flights during this window. This timing is popular because it allows you to start your day in Dublin before heading to Denver.
How long does it take to fly from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
Flying nonstop from DUB to DEN takes around 9 hours 50 minutes, with the route covering approximately 4,382 miles. Flights with a layover typically take 4 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
Business class seats are offered on the DUB to DEN route. Airlines that offer business class service on this route include:

  • Air Canada
  • United Airlines
  • Lufthansa
  • British Airways
  • Turkish Airlines
  • Aer Lingus
  • Icelandair
  • American Airlines
  • Air France
  • Swiss International Air Lines

How much is a business class flight from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
A non-stop, one-way business class flight from Dublin (DUB) to Denver, CO (DEN) is usually around $3,358 - $7,273. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Dublin (DUB) to Denver, CO (DEN-Denver Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Dublin (DUB) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Dublin (DUB) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from DUB (DUB)?
If you're planning to travel to Denver from DUB (DUB), you can fly into Denver Intl. (DEN) Some flights may connect through major hubs like Heathrow (LHR), Schiphol (AMS), Frankfurt Intl. (FRA) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Dublin (DUB) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Dublin (DUB) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Dublin (DUB) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Dublin (DUB) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Dublin (DUB) to Denver, CO (DEN-Denver Intl.)?
If you booked your Dublin (DUB) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Dublin
Destination airport
Denver Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Turkish Airlines, United, WestJet
Roundtrip price
$647
Distance
4381 mi
Average flight time
9 hours 50 mins

Book with confidence

Dublin to Denver Flights

The cheapest times to fly from Dublin to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Dublin to Denver are during the month of August. You can find some of the cheapest flights from Dublin to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dublin to Denver

Sunday is one of the best days to book for cheap flights from Dublin to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Dublin to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Dublin to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $380 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Dublin to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Dublin to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Dublin to Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia