S$411 Cheap Flights from Denver to London

View S$411 flight on Mon, 13 Oct, 2025Opens in a new window

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

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Cheap Flights from Denver to London (DEN-LHR)

Prices were available within the past 7 days and start at S$411 for one-way flights and S$738 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air France
Mon, 25 Aug - Mon, 1 Sep
DEN
Denver
LHR
London
S$738 Return, found 5 days ago
S$738
Return
found 5 days ago
Select Air France flight, departing Mon, 25 Aug from Denver to London, returning Mon, 1 Sep, priced at S$738 found 5 days ago
United
Sun, 3 Aug - Tue, 19 Aug
DEN
Denver
LHR
London
S$793 Return, found 6 days ago
S$793
Return
found 6 days ago
Select United flight, departing Sun, 3 Aug from Denver to London, returning Tue, 19 Aug, priced at S$793 found 6 days ago
United
Wed, 19 Nov - Wed, 26 Nov
DEN
Denver
LHR
London
S$801 Return, found 1 day ago
S$801
Return
found 1 day ago
Select United flight, departing Wed, 19 Nov from Denver to London, returning Wed, 26 Nov, priced at S$801 found 1 day ago
Air Canada
Wed, 19 Nov - Wed, 26 Nov
DEN
Denver
LHR
London
S$810 Return, found 1 day ago
S$810
Return
found 1 day ago
Select Air Canada flight, departing Wed, 19 Nov from Denver to London, returning Wed, 26 Nov, priced at S$810 found 1 day ago
United
Mon, 25 Aug - Mon, 1 Sep
DEN
Denver
LHR
London
S$812 Return, found 5 days ago
S$812
Return
found 5 days ago
Select United flight, departing Mon, 25 Aug from Denver to London, returning Mon, 1 Sep, priced at S$812 found 5 days ago
United
Wed, 19 Nov - Wed, 26 Nov
DEN
Denver
LHR
London
S$816 Return, found 1 day ago
S$816
Return
found 1 day ago
Select United flight, departing Wed, 19 Nov from Denver to London, returning Wed, 26 Nov, priced at S$816 found 1 day ago
Air Canada
Wed, 19 Nov - Wed, 26 Nov
DEN
Denver
LHR
London
S$816 Return, found 1 day ago
S$816
Return
found 1 day ago
Select Air Canada flight, departing Wed, 19 Nov from Denver to London, returning Wed, 26 Nov, priced at S$816 found 1 day ago
United
Sun, 3 Aug - Tue, 19 Aug
DEN
Denver
LHR
London
S$817 Return, found 6 days ago
S$817
Return
found 6 days ago
Select United flight, departing Sun, 3 Aug from Denver to London, returning Tue, 19 Aug, priced at S$817 found 6 days ago
Virgin Atlantic
Wed, 19 Nov - Wed, 26 Nov
DEN
Denver
LHR
London
S$824 Return, found 1 day ago
S$824
Return
found 1 day ago
Select Virgin Atlantic flight, departing Wed, 19 Nov from Denver to London, returning Wed, 26 Nov, priced at S$824 found 1 day ago
Delta
Wed, 19 Nov - Wed, 26 Nov
DEN
Denver
LHR
London
S$824 Return, found 1 day ago
S$824
Return
found 1 day ago
Select Delta flight, departing Wed, 19 Nov from Denver to London, returning Wed, 26 Nov, priced at S$824 found 1 day ago

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

August is typically the cheapest month to fly

From S$642 - S$1,463 per traveller.

Graph displaying average flight prices per month

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Denver to London route information
Origin airport
Denver Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, United, Virgin Atlantic
Return price
S$737
Distance
7454 km

Flights from Denver to London

There are several airlines that operate frequent flights from Denver (DEN) to London (LHR) including

The earliest flight leaves Denver Intl. Airport at 17:45 and arrives at Heathrow Airport at 09:40. The last flight of the day departs Denver at 19:30 and arrives at London at 11:30.

The flight distance from Denver to London is about 7537 km, the shortest flight is 08 hours 55 minutes with Virgin Atlantic.

Expedia lets you search across the largest number of airlines and London flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Denver London flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Denver to London trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your London flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Denver to London with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from DIA airport to Heathrow Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from DEN to Heathrow Airport (LHR) was S$738. Cheap tickets don't stick around for long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Denver Airport to London Heathrow?
Most flights can be conveniently cancelled online, but whether or not you incur a fee differs between airlines. If you do have to cancel your getaway, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from DIA airport to Heathrow Airport 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 DIA airport to LHR flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DEN to Heathrow Airport?
With around 7,500 kilometres separating Denver Intl. Airport (DEN) and LHR, your flight will be a long one. Pack wisely to make your trip more comfortable. Things like warm clothes and some noise-cancelling headphones can make a massive difference.
Which airlines fly direct from DIA airport to Heathrow Airport (LHR)?
A leading airline that operates on the route from DIA airport to LHR is United Airlines (UA). It offers 30 flights monthly. If you'd like more options, check out the deals with British Airways (BA). This airline offers 30 flights monthly between these airports.
Are Denver Intl. Airport (DEN) to LHR flight tickets cheaper when they're purchased at the last minute?
Booking your trip from DIA airport to London Heathrow last minute could be your ticket to a cheap deal. However, you might miss out on a flight altogether! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.

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