$463 Cheap Flights from London (LHR) to Denver (DEN)

View $463 flight on Tue, Dec 30, 2025Opens in a new window

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

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Cheap Flights from London to Denver (LHR-DEN)

Prices were available within the past 7 days and start at $463 for one-way flights and $514 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Dec 17 - Tue, Jan 6
LHR
London
DEN
Denver
$514 Roundtrip, found 4 days ago
$514
Roundtrip
found 4 days ago
Select Icelandair flight, departing Wed, Dec 17 from London to Denver, returning Tue, Jan 6, priced at $514 found 4 days ago
Icelandair
Tue, Jan 20 - Wed, Feb 4
LHR
London
DEN
Denver
$539 Roundtrip, found 6 days ago
$539
Roundtrip
found 6 days ago
Select Icelandair flight, departing Tue, Jan 20 from London to Denver, returning Wed, Feb 4, priced at $539 found 6 days ago
Iberia
Fri, Oct 3 - Tue, Oct 7
LHR
London
DEN
Denver
$541 Roundtrip, found 6 days ago
$541
Roundtrip
found 6 days ago
Select Iberia flight, departing Fri, Oct 3 from London to Denver, returning Tue, Oct 7, priced at $541 found 6 days ago
Aer Lingus
Wed, Oct 8 - Sun, Oct 12
LHR
London
DEN
Denver
$564 Roundtrip, found 1 day ago
$564
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Wed, Oct 8 from London to Denver, returning Sun, Oct 12, priced at $564 found 1 day ago
Lufthansa
Wed, Mar 11 - Tue, Mar 17
LHR
London
DEN
Denver
$570 Roundtrip, found 5 days ago
$570
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Wed, Mar 11 from London to Denver, returning Tue, Mar 17, priced at $570 found 5 days ago
British Airways
Fri, Oct 3 - Tue, Oct 7
LHR
London
DEN
Denver
$576 Roundtrip, found 6 days ago
$576
Roundtrip
found 6 days ago
Select British Airways flight, departing Fri, Oct 3 from London to Denver, returning Tue, Oct 7, priced at $576 found 6 days ago
Brussels Airlines
Sat, Sep 20 - Wed, Sep 24
LHR
London
DEN
Denver
$585 Roundtrip, found 2 days ago
$585
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Sat, Sep 20 from London to Denver, returning Wed, Sep 24, priced at $585 found 2 days ago
United
Tue, Nov 4 - Mon, Dec 8
LHR
London
DEN
Denver
$590 Roundtrip, found 6 days ago
$590
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 4 from London to Denver, returning Mon, Dec 8, priced at $590 found 6 days ago
Air Canada
Tue, Nov 4 - Mon, Dec 8
LHR
London
DEN
Denver
$599 Roundtrip, found 6 days ago
$599
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Nov 4 from London to Denver, returning Mon, Dec 8, priced at $599 found 6 days ago
Austrian Airlines
Sun, Oct 5 - Mon, Oct 13
LHR
London
DEN
Denver
$604 Roundtrip, found 1 day ago
$604
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Sun, Oct 5 from London to Denver, returning Mon, Oct 13, priced at $604 found 1 day ago

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

January is typically the cheapest month to fly

From $500 - $1,046 per traveler.

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $605
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $605
Flights from London (LHR) to Denver (DEN)
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, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic, WestJet
Roundtrip price
$514
Distance
4658 mi
Average flight time
2 hours 46 mins

London to Denver Flights

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

 

The best time to book a flight from London to Denver

Sunday is one of the best days to book for cheap flights from London 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 London 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 London to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $463 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 London 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 London 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.

 

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Denver Intl. Airport (DEN) cost?
Get a cheap one-way flight from $463 or cheap return flight from $514 from Heathrow Airport (LHR) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
Planning your getaway for December is a good way to save, as it's the cheapest month for flights between LHR and DEN. You'll usually find the lowest fares during the off-season.
Which airlines fly direct from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
Jump on a nonstop flight with United Airlines and journey straight from Heathrow Airport (LHR) to Denver Intl. Airport (DEN).
What is the cheapest airline that flies from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
The cheapest airline to offer flights between Heathrow Airport (LHR) and Denver Intl. Airport (DEN) will change depending on your travel dates. United Airlines and British Airways are just some of your options offering well-priced fares. Use Expedia's search tool to compare airlines in one place and find the right LHR to DEN flight for your budget.
How many flights per day from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
Every day, an average of 2 nonstop flights operate from Heathrow Airport (LHR) to Denver Intl. Airport (DEN). Select the departure time that best suits your travel plans.
What are the most popular departure times for flights from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
More travelers fly between LHR and DEN at 11 AM than at any other time of day. Looking for a quieter experience? Consider flying outside peak hours and you could save on your fare as well.
What day of the week has the most flights from LHR to DEN?
Thursday has the most flights from Heathrow Airport (LHR) to Denver Intl. Airport (DEN). Consider traveling on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
Heathrow Airport (LHR)'s first flight to Denver Intl. Airport (DEN) takes off at approximately 11:35AM UTC+0. With a total travel time of 9h 50m, you'll land at around 2:25PM UTC-7.
How long does it take to fly from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
It usually takes 9 hours and 53 minutes to travel the 4,700 mi from LHR to DEN.
What airline has the least delays from LHR to DEN?
Consider booking with United Airlines if you'd like to fly straight from Heathrow Airport (LHR) to Denver Intl. Airport (DEN) without any delays. This carrier has the strongest track record for punctuality, with an on-time performance of 83%. Want to be notified if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
Opt for a flight from Heathrow Airport (LHR) to Denver Intl. Airport (DEN) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Heathrow Airport (LHR)?
Browse your flight options from Heathrow Airport (LHR) to Denver Intl. Airport (DEN). This is the only Denver airport you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to Denver Intl. Airport (DEN) last-minute?
Last-minute bookings from LHR to DEN are usually more expensive. To lock in the cheapest rates, start searching for flights well in advance. That being said, if your travel plans are flexible, you may land a cheap ticket just before your departure.
Is it cheaper to book a LHR to DEN flight and hotel package?
Opting for a LHR to DEN flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Denver Intl. Airport (DEN)?
Typically, you can modify or cancel your LHR to DEN flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want more information, head to our Customer Service portal.

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*Available to One Key members.