$119 Cheap Spirit Airlines flights Phoenix (PHX) to Houston (IAH)

Grab affordable round-trip Spirit Airlines flights from $251 from PHX to IAH by sorting your results from “Price (lowest to highest)” on Expedia. Or look for deals from $119 for a one-way journey.**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.

Browse for one-way or round-trip flights to Houston in November or February. You could find cheaper fares with Spirit Airlines during these off-season months.

Start searching one to three months ahead of your travel date to find cheaper fares on Spirit Airlines flights from Sky Harbor Intl. Airport (PHX) to George Bush Intercontinental Airport (IAH). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*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.

Use the “Nonstop” filter when searching for direct Spirit Airlines flights from PHX to IAH. It’s also an easy way to compare other carriers offering the same direct route.

Search Spirit Airlines’s earliest flights from PHX to IAH by checking the “Morning” and “Early Morning” filters. Not only will you arrive sooner, early departures also have a 20% less chance of being canceled.**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.

Spirit Airlines flights from Sky Harbor Intl. Airport (PHX) to Houston come in to land at George Bush Intercontinental Airport (IAH). This is the main gateway to this city.

Offering a rewarding loyalty program, Spirit Airlines is a top pick for many travelers heading from PHX to IAH. Plus, if you’re a Free Spirit and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of making your booking, but your airline may charge a fee after that. For further information about modifying your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to adjust your plans without additional costs, tick the “Changes included” and “No cancel fee” filters when planning your trip.