2 airlines fly nonstop from Denver to London.
Checking today’s fares with the airlines.
| Airline | From | To |
|---|---|---|
| British Airways | DEN Denver International Airport | LHR Heathrow Airport |
| United Airlines | DEN Denver International Airport | LHR Heathrow Airport |
Nonstop service as of October 2026. Airlines change schedules seasonally.
14 miles (23 km) from the city centre. 83.9 million passengers in 2024
| How | Route | Time |
|---|---|---|
| Train | Heathrow Express to Paddington (15 min from Terminals 2 and 3, 21 min from Terminal 5), every 15 minutes | about 15m |
| Train | Elizabeth line into central London, six trains per hour | about 35m |
| Metro | Piccadilly line Underground to central London (about 40-50 minutes) | about 40m |
US citizens need a passport and a UK Electronic Travel Authorisation (ETA) for visits of up to 6 months.
London is 7 hours ahead of Denver. London uses the pound sterling (GBP).
Read the London guide: when to go, weather, airports and tips
Nonstop flight times vary by airline and season; flights with a connection take longer.
As of October 2026, British Airways and United Airlines fly this route nonstop.
About 4,686 miles (7,541 km), measured between the city centres.
London is 7 hours ahead of Denver.
US citizens need a passport and a UK Electronic Travel Authorisation (ETA) for visits of up to 6 months.
Heathrow Express to Paddington (15 min from Terminals 2 and 3, 21 min from Terminal 5), every 15 minutes, about 15 minutes.
Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.