Direct (nonstop) flights from Denver to London
2 airlines fly nonstop from Denver International (DEN) to Heathrow (LHR). It's 4,671 miles (7,518 km), about 9h 5m 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 Denver to London with one stop · direct emits 714 kg CO₂ per passenger
Looking for the return flight?
LHR → DEN: Flights from London to DenverOther direct flights from Denver
Direct flights from London (LHR)
Frequently Asked Questions
How long is the direct flight from Denver to London?
A nonstop flight from Denver (DEN) to London (LHR) takes approximately 9 hours and 5 minutes. The distance is 4,671 miles (7,518 km).
Which airlines fly nonstop from Denver to London?
2 airlines: British Airways, United Airlines.
Is there a nonstop flight from Denver to London?
Yes. 2 airlines: British Airways, United Airlines.
How far is Denver from London?
The flight distance from Denver to London 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 Denver and London?
London is 7 hours ahead of Denver. (America/Denver vs Europe/London.)
Will I experience jet lag flying from Denver to London?
Probably — 7-hour time difference means moderate jet lag. Expect about 1 day of adjustment per hour of shift. Flying eastward is generally harder to adjust to.
What type of aircraft flies from Denver to London?
At 9h 5m, 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 USA to United Kingdom?
Depends on your passport. Check with the United Kingdom embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Denver to London?
Roughly 714 kg CO2 per passenger one-way. That's about the same as driving 3,570 km.
Is the return flight from London to Denver 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 Denver to London?
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 Denver International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.