Cheap Flights from Chicago to Seattle
O'Hare International (ORD) → Seattle-Tacoma International (SEA)
Avg Flight Time
3h 50m
Distance
2,762 km
Fares From
$179
Daily Flights
4–8
About Chicago to Seattle Flights
The Chicago (ORD) to Seattle (SEA) air corridor is one of the most frequently searched US domestic routes. Travelers can expect flight times of approximately 3h 50m on nonstop services, with the distance between the two cities spanning roughly 2,762 km.
Economy fares on this route typically start from $179, though prices fluctuate based on demand, season, and how far in advance you book. Business class options are available on most mainline carriers and typically run 2–3× the economy fare.
Multiple airlines compete on the ORD–SEA route, keeping fares competitive. SkyBook compares all available options in real time so you always see the lowest current price across every airline with no booking fees added.
Tips for Booking ORD to SEA
Book 3–6 Weeks Ahead
Domestic fares are cheapest in this window. Any earlier and airlines haven't released sale inventory. Any later and prices spike.
Fly Tuesday or Wednesday
Mid-week departures are consistently cheaper. Avoid Sunday evenings and Friday afternoons — peak business travel days.
Compare All Cabins
Sometimes the difference between Economy and Main Cabin Select is just $30–50 — worth checking for the extra flexibility.
Frequently Asked Questions — Chicago to Seattle
How long is the flight from Chicago to Seattle?
The average flight from Chicago (ORD) to Seattle (SEA) takes about 3h 50m. Nonstop flights are fastest; connecting flights add 1–3 hours depending on the layover.
What is the cheapest time to fly from Chicago to Seattle?
Fares on the Chicago–Seattle route are typically lowest on Tuesdays and Wednesdays. Booking 3–6 weeks in advance and flying mid-week usually gets you the best deal. Avoid holiday weekends for the lowest prices.
Which airlines fly from ORD to SEA?
American Airlines, Delta, and United are the most common carriers on this route. Southwest, JetBlue, and Alaska Airlines also operate flights depending on the season. SkyBook compares all of them at once so you always get the best available fare.
Does ORD to SEA have nonstop flights?
Nonstop flights on the Chicago–Seattle route are available but limited. Most flights connect through a major hub such as Dallas, Chicago, or Atlanta.
How far in advance should I book flights to Seattle?
For domestic US flights, the sweet spot is typically 3–8 weeks before departure. Last-minute fares (within 7 days) are usually the most expensive. SkyBook shows live pricing so you can track when fares drop.
More Flights from Chicago
Ready to fly ORD → SEA?
Compare all airlines with no booking fees. Fares updated in real time.
Search Flights Now