Are there nonstop flights from London (LHR) to Washington (DCA)?

No. The fastest connection is via Boston, about 7h 55m of total flying time.

What is the fastest connection from London (LHR) to Washington (DCA)?

via Boston ≈ 7h 55m, via New York ≈ 7h 55m, via Newark ≈ 7h 56m (estimated flying time, excluding layovers).

from 23,000 JAL miles, from 27,500 ANA miles (economy, one way, based on the published award charts).

London Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA)・5,881 km

No nonstop flights. The fastest connection is via Boston (BOS), about 7h 55m of flying time (layover not included).

With milesJAL 23,000 miles+ (via BOS)ANA 27,500 miles+ (via ORD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

32 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.