$48 Cheap Spirit Airlines flights Pittsburgh (PIT) to Houston (IAH)

Apply the "Price (lowest to highest)" filter on Expedia to find cheap Spirit Airlines return flights from $96 from PIT to IAH. Affordable one-way options from $48 are available too.**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.

Look for cheap Spirit Airlines flights from Pittsburgh Intl. Airport (PIT) to George Bush Intercontinental Airport (IAH) one to three months before your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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 find the earliest departures from PIT to IAH with Spirit Airlines, filter your results by "Early Morning" and "Morning." Choosing an early flight generally means cancellations are less likely.**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.

A rewarding loyalty program and the ability to rack up points through Free Spirit are the start of the reasons to leave from PIT to IAH with Spirit Airlines. Plus, when you join Expedia's free One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.