Are there nonstop flights from Washington (IAD) to Mérida (MID)?

No. The fastest connection is via Orlando, about 3h 50m of total flying time.

What is the fastest connection from Washington (IAD) to Mérida (MID)?

via Orlando ≈ 3h 50m, via Miami ≈ 4h 2m, via Houston ≈ 4h 37m (estimated flying time, excluding layovers).

from 15,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Washington Dulles International Airport (IAD) to Manuel Crescencio Rejón International Airport (MID)・2,317 km

No nonstop flights. The fastest connection is via Orlando (MCO), about 3h 50m of flying time (layover not included).

With milesANA 15,000 miles+ (via IAH)JAL 23,000 miles+ (via DFW)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.