Are there nonstop flights from Tehran (THR) to Ilam (IIL)?

Yes. Iran Air, Mahan Air, Iran Aseman Airlines, Qeshm Air, Pouya Air fly this route. Flight time is about 1h 6m.

Tehran → Ilam

Mehrabad International Airport (THR) to Ilam Airport (IIL)・506 km

Nonstop flights available (5 airlines). Flight time about 1h 6m. Nonstop return flights also operate.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.