Flights Seattle → New York — September 14, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Monday, September 14, 2026 on the Seattle–New York route: 1 stop itinerary (2 flights) via Denver International (DEN), from Seattle-Tacoma (SEA) to New York LaGuardia (LGA), first flight United Airlines UA2031, departs 11:03 AM, arrives 11:24 PM, total travel time 9h 21m including layovers, flight time 6h 45m (layovers excluded), $278 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 8, 2026 and read by AirSource on September 10, 2026, 21:23 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Alaska Airlines AS295, from Seattle-Tacoma (SEA) to Newark Liberty (EWR), departs 8:53 AM, arrives 5:27 PM, direct, 5h 34m, $326 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.