This deal has expired.
It was found on July 7, 2026. Typical price for this route is $367. Fares like this come and go fast. Get the next one by email below.
Past deal
St. Louis to Philadelphia
$270$36726% off
Round trip
Philadelphia is running $270 round trip from St. Louis on Frontier, 44% below the usual price for this route. It is a one-stop itinerary, but the discount makes the extra connection worth it. Philly's food scene and historic district are an easy add for a fall city break.
Travel dates
Dates in August
e.g. Aug 4 – Aug 13 · 9 nights
Date options
4 at this price
Lowest we've seen
$136
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