$153 Cheap Frontier Airlines flights Seattle (SEA) to Chicago (MDW)

View $153 flight on Mon, Dec 29, 2025Opens in a new window

$153 Cheap Frontier Airlines flights Seattle (SEA) to Chicago (MDW)

Prices were available within the past 7 days and start at $153 for one-way flights and $175 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Feb 27 - Thu, Mar 12
SEA
Seattle
MDW
Chicago
$175 Roundtrip, found 22 hours ago
$175
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Fri, Feb 27 from Seattle to Chicago, returning Thu, Mar 12, priced at $175 found 22 hours ago

Find the cheapest month to fly from Seattle (SEA) to Chicago (MDW)

September is typically the cheapest month to fly

From $117 - $466 per traveler.
Flights from Seattle (SEA) to Chicago (MDW)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Midway Intl.
Airlines serving
Delta, Frontier Airlines, Southwest Airlines
Popular airline
Delta
Distance
2766 km
Average flight time
5 hours 58 mins