$124 Cheap Flights from Portland (PWM) to Houston (IAH)

View $124 flight on Tue, Sep 9, 2025Opens in a new window

Popular airlines from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH)

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Find available prices by choosing your travel dates.

Cheap Flights from Portland to Houston (PWM-IAH)

Prices were available within the past 7 days and start at $124 for one-way flights and $250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, May 16 - Sun, May 18
PWM
Portland
IAH
Houston
$250 Roundtrip, found 6 hours ago
$250
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Fri, May 16 from Portland to Houston, returning Sun, May 18, priced at $250 found 6 hours ago
United
Wed, Sep 3 - Wed, Sep 10
PWM
Portland
IAH
Houston
$252 Roundtrip, found 23 hours ago
$252
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Sep 3 from Portland to Houston, returning Wed, Sep 10, priced at $252 found 23 hours ago
United
Wed, Sep 3 - Wed, Sep 10
PWM
Portland
IAH
Houston
$256 Roundtrip, found 23 hours ago
$256
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Sep 3 from Portland to Houston, returning Wed, Sep 10, priced at $256 found 23 hours ago
American Airlines
Wed, Aug 27 - Sat, Aug 30
PWM
Portland
IAH
Houston
$257 Roundtrip, just found
$257
Roundtrip
just found
Select American Airlines flight, departing Wed, Aug 27 from Portland to Houston, returning Sat, Aug 30, priced at $257 just found
Delta
Mon, Jun 30 - Mon, Jul 14
PWM
Portland
IAH
Houston
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Delta flight, departing Mon, Jun 30 from Portland to Houston, returning Mon, Jul 14, priced at $257 just found
United
Thu, Jun 26 - Mon, Jun 30
PWM
Portland
IAH
Houston
$259 Roundtrip, found 1 day ago
$259
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 26 from Portland to Houston, returning Mon, Jun 30, priced at $259 found 1 day ago
Frontier Airlines
Fri, May 16 - Tue, May 20
PWM
Portland
IAH
Houston
$259 Roundtrip, found 8 hours ago
$259
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Fri, May 16 from Portland to Houston, returning Tue, May 20, priced at $259 found 8 hours ago
Frontier Airlines
Fri, May 9 - Wed, May 14
PWM
Portland
IAH
Houston
$260 Roundtrip, just found
$260
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, May 9 from Portland to Houston, returning Wed, May 14, priced at $260 just found
Delta
Wed, May 28 - Sun, Jun 8
PWM
Portland
IAH
Houston
$266 Roundtrip, found 5 hours ago
$266
Roundtrip
found 5 hours ago
Select Delta flight, departing Wed, May 28 from Portland to Houston, returning Sun, Jun 8, priced at $266 found 5 hours ago
JetBlue Airways
Tue, Jun 3 - Tue, Jun 10
PWM
Portland
IAH
Houston
$350 Roundtrip, found 15 hours ago
$350
Roundtrip
found 15 hours ago
Select JetBlue Airways flight, departing Tue, Jun 3 from Portland to Houston, returning Tue, Jun 10, priced at $350 found 15 hours ago
Flights from Portland (PWM) to Houston (IAH)
Origin airport
Portland Intl. Jetport
Destination airport
George Bush Intercontinental
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, United
Roundtrip price
$250
Distance
1664 mi

Portland to Houston Flights

The cheapest times to fly from Portland to Houston

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 Portland to Houston are during the month of May. You can find some of the cheapest flights from Portland to Houston with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Portland to Houston

Sunday is one of the best days to book for cheap flights from Portland to Houston: 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 Portland to Houston

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 Portland to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $124 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 Portland to Houston 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 Portland to Houston 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 Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH) cost?
Discover the latest flight deals from PWM to IAH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PWM to IAH?
The cheapest flights from PWM to IAH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PWM to IAH?
With prices as low as $444 for a one-way journey from PWM to IAH, United is currently the cheapest carrier on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from PWM on July 5 2025. Prices were last updated on April 20 2025 and have not changed since.
How many flights per day from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH)?
Direct flights from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from PWM to IAH?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on a number of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH)?
Opt for a flight from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this have a 22% higher chance of being canceled, on average.**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.
Is it cheaper to buy a plane ticket from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH) last-minute?
Last-minute bookings from PWM to IAH are usually more expensive. For the lowest rates, start looking for flights as early as possible. That being said, if you’re flexible with your travel dates, you may score a cheap ticket just before your departure.
Is it cheaper to book a PWM to IAH flight and hotel package?
Securing a PWM to IAH flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our wide range of stays and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Jetport Airport (PWM) to George Bush Intercontinental Airport (IAH)?
If you booked your PWM to IAH flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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*Available to One Key members.