Flights Washington → London
IAD → LHR
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 Washington (IAD) → London (LHR) route is operated by American Airlines, British Airways, Delta Air Lines, Iberia Airlines, Lufthansa Cargo, United Airlines. Across 14 flights monitored in recent months, 75% arrived on time (within 15 min of schedule), with an average delay of 6 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 17.5/100 (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 Washington the average ATFM delay is 2.0 minutes.
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Iberia Airlines (IB) | 86% | 17 min | 4.8% |
| United Airlines (UA) | 81% | 6 min | 1.9% |
| Delta Air Lines (DL) | 81% | 4 min | 2.5% |
| British Airways (BA) | 77% | 17 min | 2.4% |
| American Airlines (AA) | 76% | 9 min | 2.4% |
| Lufthansa Cargo (LH) | 76% | 15 min | 7.1% |
Airlines operating IAD-LHR
Airports
Frequently asked questions about IAD-LHR
On the Washington (IAD) -> London (LHR) route, on-time performance is 75% with an average delay of 6 minutes, based on 14 tracked flights.
The cancellation rate on Washington-London is 0.00% across 14 monitored flights.
The route is operated by 6 airlines: American Airlines, British Airways, Delta Air Lines, Iberia Airlines, Lufthansa Cargo, United 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.
