Deal found on July 20, 2026
Chicago to Philadelphia
$145$26044% off
Round trip
This Chicago to Philadelphia fare is down to $145, about half off the usual price and part of a wider Frontier sale we're tracking this week across several cities. Philly makes an easy long weekend this fall for cheesesteaks, historic sites, and a quick train ride to New York or DC.
Travel dates
Aug 15 to Aug 24
Date options
3 at this price
Lowest we've seen
$66
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