Cheap flights from London to Denver (LHR–DEN)
United Kingdom
United States
British Airways and United Airlines fly London to Denver (LHR–DEN) nonstop and back, a great-circle distance of 7,500 km (4,660 mi).
- From
- LHR
- London
- To
- DEN
- Denver
- Nonstop
- Yes · 2 airlines
- Airlines
- BA · UA
- Cheapest fare found
- £407 one-way
- Distance
- 7,500 km (4,660 mi)
- Time difference
- Denver 7 hours behind
- Most flights
- United Airlines
- Time in the air
- 9h 08m · 8h 10m back
- On time (Touchdown Index)
- 80.1%
- Flights a week
- BA ~6 · UA ~12
- Aircraft seen
- Boeing 787-9 Dreamliner · Airbus A350-1000
Checked against sources:· How we verify
London to Denver fares by month
Cheapest one-way fare found: £407 for December 2026 on Icelandair (1 stop).
- Nov ’26£456
- Dec ’26£407
Cheapest one-way fares per month of departure in the Aviasales price cache, found . Fares change by the hour: the live fare is shown when you search.
When to fly LHR–DEN
Days in Denver average 18–28 °C in May, September and October. Set your watch 7 hours back on landing at DEN.
London to Denver: frequently asked questions
Fares: Aviasales price cache, 8 October 2026; tracked flights between 6 September and 3 October 2026, from public ADS-B data.
How much is a flight from London Heathrow (LHR) to Denver (DEN)?
From £407 one-way, the cheapest fare found for December 2026 on Icelandair with 1 stop (found 8 October 2026).
How long is the LHR–DEN flight?
9h 08m wheels-up to wheels-down, the median of 77 tracked flights; DEN–LHR took 8h 10m.
Which airlines fly LHR–DEN direct?
British Airways and United Airlines.
What is the time difference between London and Denver?
Denver is 7 hours behind London: a LHR departure at noon is 05:00 local time in DEN.
Is LHR–DEN usually on time?
80.1% of 141 LHR–DEN flights landed within 15 minutes of their usual time; 4.3% were over an hour late.
How many LHR–DEN flights a week?
British Airways 6 and United Airlines 12 each way.
What aircraft fly LHR–DEN?
Boeing 787-9 Dreamliner and Airbus A350-1000.
Denver to London: the return flight (DEN–LHR)
All 2 airlines also fly DEN–LHR nonstop.
The return takes 8h 10m in the air (median of 68 tracked flights), 58 minutes shorter than LHR–DEN.
Airlines flying LHR–DEN nonstop
| Airline | Usually takes off (LHR time) | Type | Alliance | Notes |
|---|---|---|---|---|
 British Airways BA | 13:57–14:21 | full-service | oneworld | — |
| United Airlines UA | 11:39–15:29 | full-service | Star Alliance | — |
One-stop alternatives to flying LHR–DEN nonstop
One airline on both legs; check it's sold as one ticket.
- Via Dublin (DUB) with
Aer Lingus: 7,500 km (4,660 mi) flown, almost no further than nonstop. - Via Minneapolis (MSP) with
Delta Air Lines: 7,540 km (4,680 mi) flown, 1% further than nonstop. - Via Keflavík (KEF) with
Icelandair: 7,620 km (4,740 mi) flown, 2% further than nonstop. - Via Montreal (YUL) with
Air Canada: 7,800 km (4,850 mi) flown, 4% further than nonstop. - Via Toronto (YYZ) with Air Canada: 7,820 km (4,860 mi) flown, 4% further than nonstop.
LHR–DEN route map
More from London and Denver
Other arrivals in United States
Also nonstop from LHR, nearest to DEN first (straight-line distance):
- Salt Lake City (SLC) airport guide · 628 km (390 mi) from DEN
- LHR–PHX: Phoenix · 968 km (601 mi) from DEN
- LHR–LAS: Las Vegas · 1,010 km (627 mi) from DEN
- LHR–DFW: Dallas · 1,030 km (641 mi) from DEN
- Minneapolis (MSP) airport guide · 1,090 km (679 mi) from DEN
Explore the airlines’ route maps
Departure
London Heathrow Airport
Heathrow (LHR), London. In our data, 81 airlines fly nonstop from LHR to 213 destinations.
View LHR airport guide →Arrival
Denver International Airport
2 ways into Denver, fastest from 25 min:
- RTD A Line 37 min · $10
- Taxi (flat rate downtown) 25–35 min · $72.04
Weather in Denver vs London
Denver is warmer than London in 9 months and cooler in 0; the biggest gap is in July (33°C against 24°C). In October it averages 20°C in Denver and 16°C in London.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Denver | 9° | 9° | 14° | 18° | 23° | 30° | 33° | 32° | 28° | 20° | 13° | 9° |
| London | 9° | 9° | 12° | 16° | 19° | 22° | 24° | 23° | 21° | 16° | 12° | 9° |
Average daily highs. Climate normals from Denver and Climate of London (Wikipedia, CC BY-SA), which cite the national weather services.
Onward from Denver
Places you can't fly to nonstop from LHR, but can from DEN — for a stopover or a second leg.
Related routes
Sources
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- mediacentre.britishairways.com — Gatwick–Bangkok year-round from 2026
- en.wikipedia.org — current destination list, cross-checked 2026-09-25 (terminated routes removed)
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
Flight tracking: adsb.lol community ADS-B data (CC0), 6 September – 3 October 2026. Times are median wheels-up to wheels-down; add taxiing for gate-to-gate.
Report a change — seen something different at the airport or on the airline's site? We re-check and log corrections publicly.