Are there nonstop flights from Chicago (MDW) to Great Falls (GTF)?

No. The fastest connection is via Denver, about 3h 52m of total flying time.

What is the fastest connection from Chicago (MDW) to Great Falls (GTF)?

via Denver ≈ 3h 52m, via Salt Lake City ≈ 4h 16m, via Seattle ≈ 5h 14m (estimated flying time, excluding layovers).

Chicago Midway International Airport (MDW) to Great Falls International Airport (GTF)・1,964 km

No nonstop flights. The fastest connection is via Denver (DEN), about 3h 52m of flying time (layover not included).

None.

4 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.