Direct (nonstop) flights from London to Denver
2 airlines fly nonstop from Heathrow (LHR) to Denver International (DEN). It's 4,671 miles (7,518 km), about 9h 55m in the air. Operated by British Airways, United Airlines.
British Airways
United Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
BA
British Airways
UA
United Airlines
Alternative Routes
Other ways to fly from London to Denver with one stop · direct emits 714 kg CO₂ per passenger
Looking for the return flight?
DEN → LHR: Flights from Denver to LondonOther direct flights from London
Direct flights from Denver (DEN)
Frequently Asked Questions
How long is the direct flight from London to Denver?
A nonstop flight from London (LHR) to Denver (DEN) takes approximately 9 hours and 55 minutes. The distance is 4,671 miles (7,518 km).
Which airlines fly nonstop from London to Denver?
2 airlines: British Airways, United Airlines.
Is there a nonstop flight from London to Denver?
Yes. 2 airlines: British Airways, United Airlines.
How far is London from Denver?
The flight distance from London to Denver is 4,671 miles (7,518 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Rome.
What is the time difference between London and Denver?
Denver is 7 hours behind London. (Europe/London vs America/Denver.)
Will I experience jet lag flying from London to Denver?
Probably — 7-hour time difference means moderate jet lag. Expect about 1 day of adjustment per hour of shift. Flying westward is generally easier to adjust to.
What type of aircraft flies from London to Denver?
At 9h 55m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
Do I need a visa to travel from United Kingdom to USA?
Depends on your passport. Check with the USA embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from London to Denver?
Roughly 714 kg CO2 per passenger one-way. That's about the same as driving 3,570 km.
Is the return flight from Denver to London also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from London to Denver?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. For long-haul, booking 2-3 months out tends to help. Use "Check Prices" above to compare.
How early should I arrive at Heathrow for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.