Are there nonstop flights from Mexico City (MEX) to Seoul (ICN)?

Yes. Aeroméxico fly this route. Flight time is about 14h 44m.

What is the fastest connection from Mexico City (MEX) to Seoul (ICN)?

via Las Vegas ≈ 15h 13m, via San Francisco ≈ 15h 15m, via Los Angeles ≈ 15h 15m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Mexico City Benito Juárez International Airport (MEX) to Incheon International Airport (ICN)・12,096 km

Nonstop flights available (1 airline). Flight time about 14h 44m. Nonstop return flights also operate.

With milesANA 30,000 miles+ (via SFO)JAL 45,000 miles+ (via DFW)Economy, one way, estimate. Tap a connection for miles by cabin.

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.