Are there nonstop flights from Athens (ATH) to New York (LGA)?

No. The fastest connection is via Boston, about 10h 20m of total flying time.

What is the fastest connection from Athens (ATH) to New York (LGA)?

via Boston ≈ 10h 20m, via Montréal ≈ 10h 36m, via Washington ≈ 11h 12m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Athens Eleftherios Venizelos International Airport (ATH) to LaGuardia Airport (LGA)・7,930 km

No nonstop flights. The fastest connection is via Boston (BOS), about 10h 20m of flying time (layover not included).

With milesANA 27,500 miles+ (via YUL)JAL 45,000 miles+ (via CLT)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

8 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.