Are there nonstop flights from Seoul (ICN) to Houston (IAH)?

No. The fastest connection is via Dallas-Fort Worth, about 14h 22m of total flying time.

What is the fastest connection from Seoul (ICN) to Houston (IAH)?

via Dallas-Fort Worth ≈ 14h 22m, via Calgary ≈ 14h 22m, via Vancouver ≈ 14h 23m (estimated flying time, excluding layovers).

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

Incheon International Airport (ICN) to George Bush Intercontinental Airport (IAH)・11,346 km

No nonstop flights. The fastest connection is via Dallas-Fort Worth (DFW), about 14h 22m of flying time (layover not included).

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

None.

35 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.