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Cheapest flights from Chicago to Seattle
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Chicago to Seattle. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
Remember that on average the ideal time to book flights is 2 months before departure!
A non-stop flight is the most convenient and comfortable way to fly from Chicago to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.
Schedule of direct flights from Chicago to Seattle
Chicago airports overview
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Seattle airports overview
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Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets from Chicago to Seattle
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Alternative routes
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Cheapest one way flight
$106
Frontier Airlines
1 layover
13h 7m
08/12/2026
The cheapest one-way flight from Chicago to Seattle departs on 08/12/2026, is operated by Frontier Airlines and costs $106
Cheapest round trip flight
$168
Frontier Airlines
1 layover
1d 23h 18m
08/11/2026
The cheapest roundtrip flight from Chicago to Seattle departs on 08/11/2026, is operated by Frontier Airlines and costs $168
The fastest flight
4h 38m
Fastest flight from Chicago to Seattle takes 4h 38m
Direct flights
Several times a week
There are direct flights on this route 6 days a week: Su, Mo, Tu, We, Fr, and Sa
Earliest flight
6:00 AM
Latest flight
10:27 PM
Average flight duration
4h 39m
Direct flights count
115
Distance
2788km
Timezone difference
2h
The distance between Chicago and Seattle is 2788km (1729 miles). The average flight duration is 4h 39m. There are 115 direct flights from Chicago to Seattle. The time difference between Chicago and Seattle is 2h. Flights from Chicago begin at 6:00 AM. The latest flight from Chicago departs at 10:27 PM
More than 5 airlines operate flights from Chicago to Seattle, including United Airlines, Alaska Airlines, American Airlines, Southwest Airlines, and Frontier Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $106, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
There are most likely no direct flights on the Chicago — Seattle route
Chicago is served primarily by two major airports with distinct roles. O'Hare International (ORD) is the city's main international hub, typically handling a wide mix of legacy carriers and global airlines and often positioned as the pricier, full-service option; it sits about 17 miles northwest of downtown and can be reached by the CTA Blue Line in roughly 45–60 minutes (fares around transit rates) or by taxi/ride-share in 30–60 minutes depending on traffic with higher fares during peak times. Midway (MDW) is usually a budget- and low-cost-carrier–friendly airport about 10 miles southwest of the Loop; travel times are commonly 25–40 minutes by car and around 35–50 minutes via the CTA Orange Line, with generally lower fares on short-haul routes. Pros: O'Hare offers extensive international connections and full-service facilities, while Midway can be easier to navigate and quicker for domestic travel. Cons: O'Hare can be busy with longer transfer walks and congestion, and Midway has fewer long-haul options and can feel cramped at peak times.
We couldn't find any special offers for flights from Chicago to Seattle
Seattle–Tacoma International Airport (SEA) is the region’s primary international hub, handling most long-haul and domestic flights and serving legacy carriers like Alaska Airlines and major global airlines alongside some low-cost operators. Located about 14 miles (22 km) south of downtown Seattle, it can be reached by Link light rail in roughly 35–40 minutes for a low to moderate fare, by taxi or rideshare in 20–30 minutes depending on traffic, or by shuttle and car in a similar range. Fares and travel times vary with demand and time of day. Pros: comprehensive services, wide route choice and good public-transit links. Cons: can be busy at peak times and transfer distances in terminals may be long.
What is the cheapest price for flights from Chicago to Seattle?
The cheapest flight ticket from Chicago to Seattle according to data for the last 48 hours costs $106
When is the best time to buy air tickets on the route Chicago — Seattle?
Often the best time to buy tickets from Chicago to Seattle is 2 months before departure.
When is the cheapest time of year to fly from Chicago to Seattle?
Based on statistics over the past years, the lowest prices for flights from Chicago to Seattle can be found flying in these months: August, September, July.
How long does it take to fly from Chicago to Seattle?
The fastest flights from Chicago to Seattle start from 4 hours 38 minutes in the air.
Which airline can fly direct from Chicago to Seattle?
The following airlines operate direct flights on the route Chicago — Seattle: United Airlines, Alaska Airlines, American Airlines
The cost of a one-way flight from Chicago to Seattle ranges from $135 (August 2026) to $143 (July 2026). On average, the ticket price is about $140–$284.
Price dynamics
Flight prices from Chicago to Seattle barely change from month to month. You can comfortably choose any convenient dates — there won't be a significant overpayment.
Cheaper and more expensive periods
There is a slight difference: it's a bit cheaper in August 2026–September 2026 (averaging $138) and slightly more in July 2026–August 2026 ($139). But overall, the difference is small.
Best time to buy
On this route, you don't need to target specific months — prices are stable. The difference between the cheapest and most expensive period is only 1%. Book whenever it's convenient.
Price predictability
Monthly price variation is just 2.4%. Ticket costs on this route are among the most predictable.
