Are there nonstop flights from London (LHR) to New York (LGA)?

No. The fastest connection is via Boston, about 7h 31m of total flying time.

What is the fastest connection from London (LHR) to New York (LGA)?

via Boston ≈ 7h 31m, via Halifax ≈ 7h 32m, via Montréal ≈ 7h 45m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

London Heathrow Airport (LHR) to LaGuardia Airport (LGA)・5,536 km

No nonstop flights. The fastest connection is via Boston (BOS), about 7h 31m of flying time (layover not included).

With milesANA 27,500 miles+ (via YUL)JAL 37,000 miles+ (via RDU)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

26 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.