Seattle to Chicago flights
The cheapest round trip we found from Seattle to Chicago is $303 (Feb 10 – 13, 2027, Nonstop).
SEA to CHI · Round trip · Economy · Prices per person in USD · Price found (2 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $615 |
| December 2026 | No fares found yet |
| January 2027 | No fares found yet |
| February 2027 | $303 (cheapest month) |
Cheapest dates in the next 4 months
Round trip, per person-
Feb 10 – 13, 2027 3 nights · leave Wed$303$303 Book
Southwest Airlines Nonstop · 4h 00m -
Nov 23 – 29 6 nights · leave Mon$615$615 Book
Frontier Airlines 1 stop · 5h 15m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in Chicago
One Go City pass for Shedd Aquarium, Skydeck Chicago, 360 CHICAGO and more
- All-Inclusive Pass Unlimited Visit as many attractions as you like for 1–5 days from $149 See pass
- Explorer Pass Pick 3–7 of 36 attractions from $109 See pass
- Essentials Pass A few top attractions, chosen as you go from $99 See pass
Go City prices checked Oct 23, 2026; the final price is on Go City. Partner links: we may earn a commission if you book, at no extra cost to you.
Plan the rest of your trip
Chicago · Feb 10 – 13, 2027Partner links: we may earn a commission if you book, at no extra cost to you.
More from Seattle
-
-
-
-
-
-
- Ontario $175 −20%
-
Flights to Chicago from other cities
-
-
-
-
-
-
Seattle to Chicago: questions
How much does a flight from Seattle to Chicago cost?
The cheapest round trip we have found right now is $303, leaving February 10 and returning February 13. Prices are per person, economy, in USD.
Which airports do Seattle to Chicago flights use?
Seattle airports include Seattle-Tacoma International (SEA) and Boeing Field International (BFI). Chicago airports include O'Hare International (ORD), Chicago Midway International (MDW) and Chicago Rockford International (RFD). The prices on this page cover every airport in both cities (SEA and CHI are the city codes).
About this route
We track round-trip economy fares from Seattle (United States) to Chicago (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $303, departing February 10 and returning February 13 on a nonstop flight. The cheapest month to fly in our data is February, from $303. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.