€448 Cheap Flights London to Denver (LHR-DEN)

View €448 flight on Fri, 10 Oct 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 15% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from London to Denver (LHR-DEN)

Prices were available within the past 7 days and start at €448 for one-way flights and €476 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Sun, 14 Sep - Sun, 21 Sep
LHR
London
DEN
Denver
€476 Return, found 1 day ago
€476
Return
found 1 day ago
Select Aer Lingus flight, departing Sun, 14 Sep from London to Denver, returning Sun, 21 Sep, priced at €476 found 1 day ago
Icelandair
Sat, 22 Nov - Sun, 30 Nov
LHR
London
DEN
Denver
€542 Return, found 3 days ago
€542
Return
found 3 days ago
Select Icelandair flight, departing Sat, 22 Nov from London to Denver, returning Sun, 30 Nov, priced at €542 found 3 days ago
British Airways
Thu, 11 Sep - Wed, 24 Sep
LHR
London
DEN
Denver
€564 Return, found 4 days ago
€564
Return
found 4 days ago
Select British Airways flight, departing Thu, 11 Sep from London to Denver, returning Wed, 24 Sep, priced at €564 found 4 days ago
British Airways
Fri, 12 Sep - Fri, 19 Sep
LHR
London
DEN
Denver
€573 Return, found 4 days ago
€573
Return
found 4 days ago
Select British Airways flight, departing Fri, 12 Sep from London to Denver, returning Fri, 19 Sep, priced at €573 found 4 days ago
Virgin Atlantic
Sun, 14 Sep - Sun, 21 Sep
LHR
London
DEN
Denver
€587 Return, found 1 day ago
€587
Return
found 1 day ago
Select Virgin Atlantic flight, departing Sun, 14 Sep from London to Denver, returning Sun, 21 Sep, priced at €587 found 1 day ago
Iberia
Wed, 26 Nov - Mon, 1 Dec
LHR
London
DEN
Denver
€593 Return, found 5 days ago
€593
Return
found 5 days ago
Select Iberia flight, departing Wed, 26 Nov from London to Denver, returning Mon, 1 Dec, priced at €593 found 5 days ago
Delta
Sun, 14 Sep - Sun, 21 Sep
LHR
London
DEN
Denver
€603 Return, found 1 day ago
€603
Return
found 1 day ago
Select Delta flight, departing Sun, 14 Sep from London to Denver, returning Sun, 21 Sep, priced at €603 found 1 day ago
American Airlines
Sun, 24 Aug - Tue, 9 Sep
LHR
London
DEN
Denver
€603 Return, found 8 hours ago
€603
Return
found 8 hours ago
Select American Airlines flight, departing Sun, 24 Aug from London to Denver, returning Tue, 9 Sep, priced at €603 found 8 hours ago
Air Canada
Sat, 22 Nov - Sun, 30 Nov
LHR
London
DEN
Denver
€615 Return, found 3 days ago
€615
Return
found 3 days ago
Select Air Canada flight, departing Sat, 22 Nov from London to Denver, returning Sun, 30 Nov, priced at €615 found 3 days ago
Finnair
Thu, 11 Sep - Wed, 24 Sep
LHR
London
DEN
Denver
€620 Return, found 4 days ago
€620
Return
found 4 days ago
Select Finnair flight, departing Thu, 11 Sep from London to Denver, returning Wed, 24 Sep, priced at €620 found 4 days ago

Find the cheapest month to fly from London (LHR) to Denver (DEN)

February is typically the cheapest month to fly

From €433 - €866 per traveller.

Graph displaying average flight prices per month

London to Denver route information
Origin airport
Heathrow
Destination airport
Denver Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic, WestJet
Return price
€476
Distance
7454 km
Average flight time
2 hours 43 mins

Perfect flights from London to Denver

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Denver. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Denver, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Denver Intl. ticket options cater to your travel preferences, with incredible one-way fares from €448 and roundtrip prices from €476. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Denver Intl. and explore Denver and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your LHR to DEN travel arrangements today and embark on the journey of a lifetime in Denver.

Frequently asked questions

How much is a flight from LHR to DIA airport?
Round-trip tickets between Heathrow Airport (LHR) and Denver Intl. Airport (DEN) start from €476. This figure is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from LHR to DEN?
The majority of flights can be cancelled online, but each air carrier has its own set of terms and conditions. If you do decide to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from London Heathrow to Denver Intl. Airport (DEN) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to Denver Intl. Airport (DEN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from LHR to DIA airport?
The distance is around 7,500 kilometres. Neck pillow? Check. Toiletries? Check. We recommend you pack all the essentials for this long-haul Hounslow to Denver flight.
Which airlines fly direct from Heathrow Airport (LHR) to DIA airport?
With 30 monthly flights operating from Heathrow Airport to DEN, United Airlines (UA) is a great choice. You could also check out the fares on offer with British Airways (BA). This carrier operates 30 monthly flights between Hounslow and Denver.
Are Heathrow Airport to DIA airport flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so it's no sure thing. While last-minute deals between Heathrow Airport (LHR) and Denver Intl. Airport (DEN) are possible, it also makes sense to keep track of prices well before you fly. In fact, some air carriers release their prices up to 12 months prior to the departure date. Expedia is continuously updating the biggest bargains around, so check back often and be ready to pounce when the price dips.

Explore a world of travel with Expedia

*Available to Expedia members.