Flights Miami → London
MIA → LHR
Route overview
The flight route from Miami to London has a punctuality rate of 75%, with an average delay of 20.5 minutes per flight. Over the course of a year, this route sees approximately 14 flights using aircraft such as the Boeing 777-300ER, Boeing 777, Boeing 747-400, and Airbus A330-300, serving a destination airport that handles nearly 83.9 million passengers annually.
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 Miami (MIA) → London (LHR) route is operated by American Airlines, British Airways, Delta Air Lines, Iberia Airlines. Across 14 flights monitored in recent months, 75% arrived on time (within 15 min of schedule), with an average delay of 21 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 15.5/100 (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 Miami the average ATFM delay is 2.0 minutes.
Heading to London: what to expect in this direction
Flying from Miami (MIA) to London (LHR) heads north-east for about 7,109 km, a flight time of roughly 9h 18m.
Departures from Miami on this leg cluster in the evening window: about 86% of MIA-LHR flights take off then.
Air-traffic congestion: departing Miami the average ATFM delay is 2.0 min (atfm); arriving into London it is 1.8 min (atfm).
Across 14 tracked MIA-LHR flights, 75% left on time with an average delay of 21 min and a 0.0% cancellation rate.
Route facts
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Iberia Airlines (IB) | 86% | 17 min | 4.8% |
| Delta Air Lines (DL) | 80% | 8 min | 1.8% |
| British Airways (BA) | 77% | 17 min | 2.4% |
| American Airlines (AA) | 74% | 16 min | 3.0% |
Airlines operating MIA-LHR
Frequently asked questions about MIA-LHR
On the Miami (MIA) -> London (LHR) route, on-time performance is 75% with an average delay of 21 minutes, based on 14 tracked flights.
The cancellation rate on Miami-London is 0.00% across 14 monitored flights.
The route is operated by 4 airlines: American Airlines, British Airways, Delta Air Lines, Iberia 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.
