Flights Chicago → Denver — September 24, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Thursday, September 24, 2026 on the Chicago–Denver route: 1 stop itinerary (2 flights) via Houston Bush Intercontinental (IAH), from Chicago O'Hare (ORD) to Denver International (DEN), first flight Frontier Airlines F93135, departs 2:46 PM, arrives 12:15 AM the next day, total travel time 10h 29m including layovers, flight time 5h 46m (layovers excluded), $141 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 6, 2026 and read by AirSource on September 10, 2026, 20:47 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Frontier Airlines F91483, from Chicago O'Hare (ORD) to Denver International (DEN), departs 6:30 AM, arrives 8:15 AM, direct, 2h 45m, $170 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable.