Flights Chicago → Washington — September 10, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Thursday, September 10, 2026 on the Chicago–Washington route: 1 stop itinerary (2 flights) via Orlando International (MCO), from Chicago O'Hare (ORD) to Washington Dulles (IAD), first flight Frontier Airlines F93044, departs 3:50 PM, arrives 10:17 AM the next day, total travel time 17h 27m including layovers, flight time 5h 7m (layovers excluded), $220 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 10, 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: American Airlines AA489, from Chicago O'Hare (ORD) to Washington Reagan National (DCA), departs 5:00 PM, arrives 8:06 PM, direct, 2h 6m, $252 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.