$622 Cheap Flights from Belfast (BHD) to Denver (DEN)

View $622 flight on Tue, Sep 8, 2026Opens in a new window

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

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Cheap Flights from Belfast to Denver (BHD-DEN)

Prices were available within the past 7 days and start at $622 for one-way flights and $1,189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,189 Roundtrip, found 1 hour ago
$1,189
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,189 found 1 hour ago
KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,229 Roundtrip, found 1 hour ago
$1,229
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,229 found 1 hour ago
KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,335 Roundtrip, found 1 hour ago
$1,335
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,335 found 1 hour ago
KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,338 Roundtrip, found 1 hour ago
$1,338
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,338 found 1 hour ago
Aer Lingus
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,371 Roundtrip, found 1 hour ago
$1,371
Roundtrip
found 1 hour ago
Select Aer Lingus flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,371 found 1 hour ago
KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,375 Roundtrip, found 1 hour ago
$1,375
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,375 found 1 hour ago
Aer Lingus
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,376 Roundtrip, found 1 hour ago
$1,376
Roundtrip
found 1 hour ago
Select Aer Lingus flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,376 found 1 hour ago
KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,378 Roundtrip, found 1 hour ago
$1,378
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,378 found 1 hour ago
KLM
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,405 Roundtrip, found 1 hour ago
$1,405
Roundtrip
found 1 hour ago
Select KLM flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,405 found 1 hour ago
British Airways
Wed, Jun 24 - Wed, Jul 1
BHD
Belfast
DEN
Denver
$1,721 Roundtrip, found 1 hour ago
$1,721
Roundtrip
found 1 hour ago
Select British Airways flight, departing Wed, Jun 24 from Belfast to Denver, returning Wed, Jul 1, priced at $1,721 found 1 hour ago

Frequently asked questions

How much does a flight from Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $622 and cheap return flights from $1,189 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.) with Expedia. Return flights often range between $713 and $3039. 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 Belfast (BHD-George Best Belfast City) 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
The cheapest month to fly from BHD to DEN is June 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
Enter BHD to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
Finnair is one of the cheapest airlines offering connecting flights from Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.), with round-trip tickets starting from around $992. 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Belfast (BHD-George Best Belfast City) 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 time to fly from Belfast (BHD-George Best Belfast City) 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.
What is the earliest flight from Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Belfast (BHD) to Denver (DEN) typically leaves at around 6:30 AM, operated by KLM and Delta. This is a seasonal service active in March, and an early departure allows you to 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Belfast (BHD) to Denver (DEN) are in the early morning, from 6am to 9am. About 71% of passengers prefer this time window. Many major carriers, including KLM and British Airways, operate flights during this window. This timing works well because it allows you to arrive in Denver with a full day ahead of you.
How long does it take to fly from Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
Flying from BHD to DEN with a connection usually takes about 16 hours, traveling roughly 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
Business class seats are offered on the BHD to DEN route with British Airways.
How do I earn miles on a Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Belfast (BHD-George Best Belfast City) 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 George Best Belfast City (BHD)?
If you're planning to travel to Denver from George Best Belfast City (BHD), you can fly into Denver Intl. (DEN) Some flights may connect through major hubs like Schiphol (AMS), Heathrow (LHR), EDI (EDI) 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Belfast (BHD-George Best Belfast City) 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Belfast (BHD-George Best Belfast City) 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 Belfast (BHD-George Best Belfast City) to Denver, CO (DEN-Denver Intl.)?
If you booked your Belfast (BHD-George Best Belfast City) 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
George Best Belfast City
Destination airport
Denver Intl.
Roundtrip price
$1,189
Distance
4350 mi

Book with confidence

Belfast to Denver Flights

The cheapest times to fly from Belfast 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 Belfast to Denver are during the month of June. You can find some of the cheapest flights from Belfast to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Belfast to Denver

Sunday is one of the best days to book for cheap flights from Belfast 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 Belfast 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 Belfast to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $622 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 Belfast 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 Belfast 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.

 

Belfast to Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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