Great-circle route ORD ↔ SEA. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample. The two directions are not identical — that is normal on scheduled routes.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| ORD → SEA Chicago to Seattle |
135/wk | Daily | Alaska Airlines, American Airlines, Delta Air Lines, United Airlines |
| SEA → ORD Seattle to Chicago |
128/wk | Daily | Alaska Airlines, American Airlines, Delta Air Lines, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 1,599,103 passengers on 10,676 flights between ORD and SEA — about 4,384 a day — filling 87% of the 1,832,361 seats flown. Alaska Airlines Inc. carried the most passengers (35%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
4 airlines fly the ORD–SEA nonstop, including Alaska Airlines, American Airlines, Delta Air Lines, United Airlines.
Recent scheduled departures on this route have used the Boeing 737-800, Airbus A320, Boeing 737-900, Boeing 737 and 1 other types.
Aircraft assignments change by season and by time of day.
On a long east–west route like this one the two directions do not take the same time. Aircraft flying eastbound ride the mid-latitude jet stream and typically arrive earlier than the westbound leg, which flies into it. The difference is commonly 30 to 90 minutes on transatlantic and transpacific flights, and it varies by season. The estimate above does not model wind — treat it as a midpoint and check the airline's own timetable for the block time on your date.
The distance between Chicago O'Hare International Airport and Seattle Tacoma International Airport is 1,716 miles, or 2,762 kilometres.
| Great-circle distance | 1,716 mi |
| Kilometres | 2,762 km |
| Nautical miles | 1,491 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 4 airlines fly the route nonstop, with about 263 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 3h 55m in the air. That is a great-circle estimate from the 1,716-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 135 a week from Chicago to Seattle and 128 a week from Seattle to Chicago, from our most recent schedule sample.
Alaska Airlines, American Airlines, Delta Air Lines, United Airlines.
In 2025, airlines reported 1,599,103 passengers on 10,676 scheduled flights between ORD and SEA — about 4,384 a day — filling 87% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Boeing 737-800, Airbus A320, Boeing 737-900, Boeing 737. Assignments change by season and by time of day.
