$50 Cheap Flights from Houston (IAH) to Phoenix (PHX)

View $50 flight on Sat, May 31, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Phoenix Sky Harbor Intl. Airport (PHX)

Find available prices by choosing your travel dates.

Cheap Flights from Houston to Phoenix (IAH-PHX)

Prices were available within the past 7 days and start at $50 for one-way flights and $128 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Apr 30 - Sun, Jun 1
IAH
Houston
PHX
Phoenix
$128 Roundtrip, found 1 day ago
$128
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Apr 30 from Houston to Phoenix, returning Sun, Jun 1, priced at $128 found 1 day ago
Frontier Airlines
Sat, May 31 - Sun, Jun 1
IAH
Houston
PHX
Phoenix
$134 Roundtrip, just found
$134
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 31 from Houston to Phoenix, returning Sun, Jun 1, priced at $134 just found
Frontier Airlines
Mon, May 19 - Sat, May 31
IAH
Houston
PHX
Phoenix
$135 Roundtrip, found 1 day ago
$135
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, May 19 from Houston to Phoenix, returning Sat, May 31, priced at $135 found 1 day ago
Frontier Airlines
Sun, May 11 - Sun, May 25
IAH
Houston
PHX
Phoenix
$136 Roundtrip, found 5 days ago
$136
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sun, May 11 from Houston to Phoenix, returning Sun, May 25, priced at $136 found 5 days ago
Frontier Airlines
Sun, May 25 - Sat, May 31
IAH
Houston
PHX
Phoenix
$137 Roundtrip, found 3 hours ago
$137
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sun, May 25 from Houston to Phoenix, returning Sat, May 31, priced at $137 found 3 hours ago
United
Wed, May 21 - Sat, May 31
IAH
Houston
PHX
Phoenix
$140 Roundtrip, found 1 hour ago
$140
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 21 from Houston to Phoenix, returning Sat, May 31, priced at $140 found 1 hour ago
Frontier Airlines
Sat, May 31 - Tue, Jun 10
IAH
Houston
PHX
Phoenix
$145 Roundtrip, found 1 hour ago
$145
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, May 31 from Houston to Phoenix, returning Tue, Jun 10, priced at $145 found 1 hour ago
Delta
Wed, May 21 - Sat, May 31
IAH
Houston
PHX
Phoenix
$159 Roundtrip, found 1 hour ago
$159
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, May 21 from Houston to Phoenix, returning Sat, May 31, priced at $159 found 1 hour ago
American Airlines
Wed, May 21 - Sat, May 31
IAH
Houston
PHX
Phoenix
$184 Roundtrip, found 1 hour ago
$184
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, May 21 from Houston to Phoenix, returning Sat, May 31, priced at $184 found 1 hour ago
Spirit Airlines
Thu, May 1 - Thu, May 8
IAH
Houston
PHX
Phoenix
$245 Roundtrip, found 7 hours ago
$245
Roundtrip
found 7 hours ago
Select Spirit Airlines flight, departing Thu, May 1 from Houston to Phoenix, returning Thu, May 8, priced at $245 found 7 hours ago
Flights from Houston (IAH) to Phoenix (PHX)
Origin airport
George Bush Intercontinental
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Roundtrip price
$128
Distance
1006 mi

Houston to Phoenix Flights

The cheapest times to fly from Houston to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Phoenix are during the month of April. You can find some of the cheapest flights from Houston to Phoenix with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Houston to Phoenix

Sunday is one of the best days to book for cheap flights from Houston to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Houston to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $50 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX) cost?
Score cheap return tickets from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX) starting from $130. Book your seat and get ready for takeoff. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United and Frontier Airlines flight leaving IAH on May 19 2025 and touching down at PHX. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from IAH to PHX?
The cheapest flights from IAH to PHX are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
Take your pick of 3 carriers that fly nonstop from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX). Including:

  • United Airlines
  • American Airlines
  • Frontier Airlines

What is the cheapest airline that flies from IAH to PHX?
With prices starting from $50 for a one-way flight from IAH to PHX, Frontier Airlines is currently the cheapest carrier operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAH on May 31 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
When flying out of George Bush Intercontinental Airport (IAH), you’ll have your pick from an average of 9 daily direct flights to Sky Harbor Intl. Airport (PHX).
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
Flights between IAH and PHX tend to be busiest at 2 PM. If you’d like a quieter trip and possibly cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from IAH to PHX?
Thursday has the most flights from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX). Consider jetting off on this day and you’ll have the best chance of finding a departure that fits your schedule.
What is the earliest flight from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
Catch the earliest flight at around 7:40AM UTC-6, heading out of George Bush Intercontinental Airport (IAH). You’ll be in the air for roughly 3h 6m, landing at Sky Harbor Intl. Airport (PHX) at approximately 9:46AM UTC-7.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
It takes approximately 3 hours and 8 minutes to travel the 1,000 mi from IAH to PHX.
What airline has the least delays from IAH to PHX?
Consider traveling with United Airlines if you’d like to fly straight from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX) without any holdups. This carrier has the strongest track record for punctuality, with an on-time performance of 85%. Want real-time updates? You can check your flight status using the Expedia App.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
Book a flight from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Phoenix from George Bush Intercontinental Airport (IAH)?
If you’re traveling on a direct flight from George Bush Intercontinental Airport (IAH) to Phoenix, Sky Harbor Intl. Airport (PHX) is the only airport you can land at.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX) last-minute?
Booking your flight from IAH to PHX right before your trip is typically more expensive. But if you’re flexible with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an IAH to PHX flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to PHX flight and hotel package with Expedia could result in significant savings. What’s more, having everything in one convenient place takes the hassle out of travel planning. Simply pick your flights and choose from our extensive range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Sky Harbor Intl. Airport (PHX)?
If you booked your IAH to PHX flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.