Flights Denver → New York — September 12, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Saturday, September 12, 2026 on the Denver–New York route: 1 stop itinerary (2 flights) via Chicago Midway (MDW), from Denver International (DEN) to New York LaGuardia (LGA), first flight Southwest Airlines WN1223, departs 7:15 AM, arrives 6:15 PM, total travel time 9h including layovers, flight time 4h 25m (layovers excluded), $145 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 8, 2026 and read by AirSource on September 10, 2026, 21:21 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: United Airlines UA1745, from Denver International (DEN) to Newark Liberty (EWR), departs 11:59 PM, arrives 5:43 AM the next day, direct, 3h 44m, $159 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable.