Flights Atlanta → London
ATL → LHR
How long is the flight from Atlanta to London?
The flight from Atlanta (ATL) to London (LHR) takes 7h 43m on average. That is the median time recorded across 4 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
This flight route from Atlanta to London operates with a total of 14 flights, using various Boeing aircraft models including the 777 and 767-400. However, it has a relatively low on-time performance rate of only 25%, with an average delay time of 21.6 minutes per flight.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Atlanta (ATL) → London (LHR) route is operated by American Airlines, Air France, British Airways, Delta Air Lines, Iberia Airlines, KLM Royal Dutch Airlines. Across 68 flights monitored in recent months, 71% arrived on time (within 15 min of schedule), with an average delay of 15 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 18.1/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At London the average ATFM delay is 1.8 minutes (main cause: atfm). Departing from Atlanta the average ATFM delay is 5.5 minutes.
Heading to London: what to expect in this direction
Flying from Atlanta (ATL) to London (LHR) heads north-east for about 6,761 km, a flight time of roughly 7h 43m.
Departures from Atlanta on this leg cluster in the evening window: about 79% of ATL-LHR flights take off then.
Air-traffic congestion: departing Atlanta the average ATFM delay is 5.5 min (atfm); arriving into London it is 1.8 min (atfm).
Across 68 tracked ATL-LHR flights, 71% left on time with an average delay of 15 min and a 0.0% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Iberia Airlines (IB) | 87% | 20 min | 1.2% |
| Delta Air Lines (DL) | 85% | 1 min | 0.8% |
| Air France (AF) | 82% | 28 min | 0.0% |
| KLM Royal Dutch Airlines (KL) | 82% | 19 min | 5.9% |
| American Airlines (AA) | 79% | 6 min | 1.1% |
| British Airways (BA) | 66% | 31 min | 1.3% |
Airlines operating ATL-LHR
Airports
Frequently asked questions about ATL-LHR
The flight from Atlanta (ATL) to London (LHR) takes 7h 43m on average. That is the median time recorded across 4 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Atlanta (ATL) -> London (LHR) route, on-time performance is 71% with an average delay of 15 minutes, based on 68 tracked flights.
The cancellation rate on Atlanta-London is 0.00% across 68 monitored flights.
The route is operated by 6 airlines: American Airlines, Air France, British Airways, Delta Air Lines, Iberia Airlines, KLM Royal Dutch Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at London, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
