$44 Cheap Frontier Airlines flights Houston (IAH) to Phoenix (PHX)

Landing cheap one-way Frontier Airlines flights from IAH to PHX from $44 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $128 for your next exciting getaway.**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.

July is one of the most affordable months to jet off to Phoenix with Frontier Airlines. You could also find great prices on one-way and round-trip fares in August.

To find cheap Frontier Airlines fares from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX), start searching one to three months before your intended departure. Securing 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 influence the overall cost. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey 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.

Yes, you can fly from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX) on one of Frontier Airlines’s 4 direct weekly flights. Use Expedia’s “Nonstop” and “Airline” filters to find the Frontier Airlines flight that’ll arrive at PHX at a time that suits you.

Leave George Bush Intercontinental Airport (IAH) for Sky Harbor Intl. Airport (PHX) on a nonstop Frontier Airlines flight, and you’ll be in the sky for around 3h 9m.

The earliest Frontier Airlines flight from IAH to PHX takes off at 8:56PM UTC-6, arriving at 11:07PM UTC-7. If you want to head off later, the last Frontier Airlines flight leaves IAH at 9:06PM UTC-6 and touches down at PHX at 11:13PM UTC-7. Flying before midday is often a smart choice as morning flights are 20% less likely to be 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.

Take a Frontier Airlines flight from George Bush Intercontinental Airport (IAH) to Phoenix, and you’ll most likely land at Sky Harbor Intl. Airport (PHX). This is the airline’s primary hub here.

Fly from IAH to PHX with Frontier Airlines and you’ll enjoy a host of benefits including a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you could also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll probably board an Airbus A320neo for your Frontier Airlines flight from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX). However, you may be switched to another aircraft if there are operational changes.

Changes are usually free within 24 hours of booking, but your airline may charge you after that time. For further information about altering your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to change your itinerary without being charged, apply the “No cancel fee” or “Changes included” filter when organizing your next getaway.