Are there nonstop flights from Chicago (ORD) to Phnom Penh (KTI)?

No. The fastest connection is via Hong Kong, about 17h 33m of total flying time.

What is the fastest connection from Chicago (ORD) to Phnom Penh (KTI)?

via Hong Kong ≈ 17h 33m, via Seoul ≈ 17h 38m, via Taipei ≈ 17h 48m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Chicago O'Hare International Airport (ORD) to Techo International Airport (KTI)・13,941 km

No nonstop flights. The fastest connection is via Hong Kong (HKG), about 17h 33m of flying time (layover not included).

With milesANA 40,000 miles+ (via TPE)JAL 47,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

9 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.