Flights Washington → London — September 20, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Sunday, September 20, 2026 on the Washington–London route: 1 stop itinerary (2 flights) via New York JFK (JFK), from Washington Reagan National (DCA) to London Heathrow (LHR), first flight JetBlue B6254, departs 6:30 AM, arrives 9:30 AM the next day, total travel time 22h including layovers, flight time 8h 39m (layovers excluded), $344 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 5, 2026 and read by AirSource on September 10, 2026, 19:00 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: British Airways BA292, from Washington Dulles (IAD) to London Heathrow (LHR), departs 10:25 PM, arrives 10:50 AM the next day, direct, 7h 25m, $482 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.