£263 Cheap Flights from Denver (DEN) to Belfast (BHD)

View £263 flight on Mon, 5 Oct 2026Opens in a new window

Flight 1

Popular airlines from Denver International Airport (DEN) to Belfast (BHD-George Best Belfast City)

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Cheap Flights from Denver (DEN) to Belfast (BHD)

Prices were available within the past 7 days and start at £263 for one-way flights and £944 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£944 Return, found 1 hour ago
£944
Return
found 1 hour ago
Select KLM flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £944 found 1 hour ago
British Airways
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£967 Return, found 1 hour ago
£967
Return
found 1 hour ago
Select British Airways flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £967 found 1 hour ago
British Airways
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£975 Return, found 1 hour ago
£975
Return
found 1 hour ago
Select British Airways flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £975 found 1 hour ago
Air Canada
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£989 Return, found 1 hour ago
£989
Return
found 1 hour ago
Select Air Canada flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £989 found 1 hour ago
Air Canada
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£993 Return, found 1 hour ago
£993
Return
found 1 hour ago
Select Air Canada flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £993 found 1 hour ago
British Airways
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£998 Return, found 1 hour ago
£998
Return
found 1 hour ago
Select British Airways flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £998 found 1 hour ago
KLM
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£1,002 Return, found 1 hour ago
£1,002
Return
found 1 hour ago
Select KLM flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £1,002 found 1 hour ago
British Airways
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£1,012 Return, found 1 hour ago
£1,012
Return
found 1 hour ago
Select British Airways flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £1,012 found 1 hour ago
Virgin Atlantic
Tue, 19 May - Sat, 23 May
DEN
Denver
BHD
Belfast
£1,076 Return, found 6 days ago
£1,076
Return
found 6 days ago
Select Virgin Atlantic flight, departing Tue, 19 May from Denver to Belfast, returning Sat, 23 May, priced at £1,076 found 6 days ago
Aer Lingus
Sun, 19 Jul - Sun, 9 Aug
DEN
Denver
BHD
Belfast
£1,117 Return, found 1 hour ago
£1,117
Return
found 1 hour ago
Select Aer Lingus flight, departing Sun, 19 Jul from Denver to Belfast, returning Sun, 9 Aug, priced at £1,117 found 1 hour ago

Frequently asked questions

How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City), 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 time to fly from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
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 Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
There are approximately 38 connecting flights per day from Denver Intl. (DEN) to George Best Belfast City (BHD). Some common connection points include (DUB), O'Hare Intl. (ORD), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
The earliest flight from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and British Airways. This is a seasonal service active in August. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
You'll typically find the most flights from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) on a Sunday, with around 47 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United Airlines, and Delta Air Lines.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
The most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) are in the evening, from 6pm to 9pm. About 43% of passengers prefer this time. Many major carriers, including British Airways, Aer Lingus and American Airlines, offer flights during this window. This timing works well because you can finish your day in Denver and arrive in Belfast ready to start your trip.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
A flight from DEN to BHD with a layover takes around 19 hours, with the route covering approximately 4,351 miles. 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 Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
Select the "Business class" and "First class" filters when looking for DEN to BHD flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) 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 Belfast from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into George Best Belfast City (BHD) and Belfast Intl. (BFS) in Belfast. Some flights may connect through major hubs like Dallas-Fort Worth Intl. (DFW), O'Hare Intl. (ORD), Charlotte-Douglas Intl. (CLT) before reaching Belfast. 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 Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) 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 Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) flight and hotel package 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 Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City)?
If you booked your Denver, CO (DEN-Denver Intl.) to Belfast (BHD-George Best Belfast City) 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
Denver Intl.
Destination airport
George Best Belfast City
Return price
£944
Distance
6961 km

Book with confidence

Compare flights from Denver to Belfast easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Denver to Belfast. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to George Best Belfast City in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Denver Intl. to George Best Belfast City.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Denver Intl. (DEN) to George Best Belfast City (BHD)

The easiest way to view the best deals on flights from Denver to Belfast today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Denver Intl. to George Best Belfast City start at just £944 and range up to £1,117.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Denver and Belfast
  • booking your flight during July, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Denver to Belfast flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Denver Intl. to George Best Belfast City for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Denver to Belfast easily and book with confidence

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