For example, we found seats on United departing Houston IAH on Wednesday, July 18, returning from Philadelphia PHL on Wednesday, July 25.
You'll find travel available on scattered Wednesdays, Fridays, and Saturdays this spring, with a few limited dates available during the summer months.
This price is for basic economy, which means it will only include one small personal item (small backpack, large purse, etc.). If you need to bring more luggage, you may check a bag for $25 each way or upgrade to the regular economy, which includes a normal carry-on bag plus one personal item.
Alternatively, you can fly Southwest from Houston-Hobby to Philadelphia for $174 round-trip with a connection. Southwest includes two free checked bags along with the normal carry-on allowance and there is decent availability for summer travel.
Check out our full list of fares to Philadelphia for more of today's finds.
Need a room in Philly? Here's what's available for the above dates on Hotelwatchdog.