$125 Cheap Frontier Airlines flights Philadelphia (PHL) to Houston (IAH)

Apply the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines round-trip flights from $245 from PHL to IAH. Affordable one-way tickets from $125 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines flights to Houston tend to be cheaper in the off-peak months of November and February. Whether you’re searching for a round-trip or one-way ticket, you could land a better deal then.

For cheap Frontier Airlines fares from Philadelphia Intl. Airport (PHL) to George Bush Intercontinental Airport (IAH), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall price. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct journey from PHL to IAH with Frontier Airlines or any other carriers, check the “Nonstop” filter when searching for tickets.

To find the earliest departures from PHL to IAH with Frontier Airlines, filter your results by “Early Morning” and “Morning.” Booking an early flight generally means you’ll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Catch a Frontier Airlines flight from Philadelphia Intl. Airport (PHL) to Houston, and you’ll most likely arrive at George Bush Intercontinental Airport (IAH). This is the airline’s main hub in this destination.

A rewarding loyalty program and the ability to rack up points through Frontier Miles are the start of the reasons to travel from PHL to IAH with Frontier Airlines. Plus, when you sign up to Expedia’s free One Key™ program, you can earn OneKeyCash™* alongside any airline loyalty program earnings. It’s yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or reschedule your flight, although additional charges may apply if you booked more than 24 hours ago. Want to keep your options open? Make use of Expedia’s “No cancel fee” and “Changes included” filters to find flights that won’t penalize you if you need to alter your plans. To make changes, go to “Trips,” select your flight and click on “Manage Booking” for further information.