Cheap flights from Seattle to Chicago (All Airports)
Seattle to Chicago (All Airports) (SEA → CHI). We are tracking 10 fares on this route.
Cheapest tracked fare $159 · typical price $235 · you save about $76 (32%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier
2026-10-18
1 stop
$159
Alaska
2026-09-21
Direct
$159
Alaska
2026-09-28
Direct
$159
American
2026-10-05
Direct
$159
American
2026-10-12
Direct
$159
American
2026-10-19
Direct
$159
American
2026-10-26
Direct
$159
Southwest
2026-11-02
Direct
$159
Southwest
2026-11-09
Direct
$159
Southwest
2026-11-16
Direct
$159
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from Seattle to Chicago (All Airports) get?
The cheapest fare we have tracked on this route is $159, compared with a typical $235 for a trip of this distance.
Is it cheaper to fly to Chicago (All Airports) from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make Seattle to Chicago (All Airports) cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.