Cheap Flights from Seattle to Chicago
No deal from Seattle to Chicago has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from Seattle to Chicago, the lowest round-trip fare we recorded was $175, in September. The typical fare was $304. September was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $334 on Frontier, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/seattle">from Seattle</a>, <a href="/to/chicago">to Chicago</a>, or the return direction <a href="/from/chicago/to/seattle">Chicago to Seattle</a>.
Latest price we saw: Seattle to Chicago
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Seattle (SEA) to Chicago (ORD) | $334 | 9.7¢ | Nov 6 – Nov 14 | Frontier | Oct 17 | Check price |
Price history: Seattle to Chicago
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $194 | $405 | 119 |
| Sep 2026 | $175 | $249 | 198 |
| Aug 2026 | $178 | $290 | 238 |
| Jul 2026 | $274 | $274 | 1 |
Frequently asked questions
How many flight deals from Seattle to Chicago are on Sparkflights right now?
There are 0 verified deals from Seattle to Chicago on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Seattle to Chicago?
The lowest fare we've recorded from Seattle to Chicago is $175, based on 556 price observations over 4 months.
How much does a flight from Seattle to Chicago cost?
The typical round-trip fare we observed from Seattle to Chicago is $304, against a recorded low of $175. These are observations, not quotes.
When is the cheapest month to fly Seattle to Chicago?
September was the cheapest month we observed from Seattle to Chicago and July the dearest, over 4 months of data.
What is the current price from Seattle to Chicago?
The most recent fare our sweep saw from Seattle to Chicago is $334, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.