HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
George Bush Intcntl

$130+ Cheap flights from Portland, ME (PWM) to George Bush Intcntl (IAH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IAH
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to George Bush Intcntl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portland to George Bush Intcntl

Cheapest flights from Portland to George Bush Intcntl
Explore the most affordable flight options available from Portland to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:40 pm
PWM
-
IAH
1 stop7h 13m
American Airlines
Tue 3/315:16 pm
IAH
-
PWM
1 stop5h 39m
American Airlines
Deal found 1/25$255
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:07 pm
PWM
-
IAH
1 stop6h 41m
American Airlines
Thu 3/125:16 pm
IAH
-
PWM
1 stop5h 39m
American Airlines
Deal found 1/26$259
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:00 am
PWM
-
IAH
2 stops10h 14m
Delta
Tue 3/105:25 am
IAH
-
PWM
1 stop5h 44m
Delta
Deal found 1/26$260
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
PWM
-
IAH
1 stop7h 16m
Delta
Sun 5/175:55 am
IAH
-
PWM
1 stop5h 23m
Delta
Deal found 1/27$299
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1712:13 pm
PWM
-
IAH
1 stop7h 13m
Delta
Wed 2/1812:15 pm
IAH
-
PWM
2 stops11h 03m
Delta
Deal found 1/26$300
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/113:58 pm
PWM
-
IAH
1 stop7h 26m
American Airlines
Tue 2/172:00 pm
IAH
-
PWM
1 stop7h 30m
American Airlines
Deal found 1/26$305
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:00 am
PWM
-
IAH
2 stops10h 16m
Delta
Tue 2/174:25 pm
IAH
-
PWM
1 stop5h 41m
Delta
Deal found 1/26$310
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:40 pm
PWM
-
IAH
1 stop7h 13m
American Airlines
Tue 3/172:00 pm
IAH
-
PWM
1 stop7h 30m
American Airlines
Deal found 1/25$313

Find flight deals from Portland to George Bush Intcntl

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to George Bush Intcntl (IAH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(American Airlines)

One-way from

$130
(American Airlines)

Popular in

December

Cheapest in

July

Average price

$478
Provider with most accurate pricing for Portland-Houston George Bush Intcntl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Houston George Bush Intcntl flights.
Search Deals
From Portland to Houston George Bush Intcntl
Search Deals
One-way flight from Portland to Houston George Bush Intcntl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to George Bush Intcntl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Portland to Houston George Bush Intcntl Airport that are best for you.

Fly from

Portland

Fly to

George Bush Intcntl

Route

Depart

Return

Price

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 3/3

5:40 pm-11:53 pm

1 stop7h 13m

Houston George Bush Intcntl

Tue 3/31

5:16 pm-11:55 pm

1 stop5h 39m

$255

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 6/16

7:15 pm-12:35 am

1 stop6h 20m

Houston George Bush Intcntl

Fri 6/19

2:23 pm-11:50 pm

1 stop8h 27m

$259

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 3/4

12:43 pm-12:11 am

2 stops12h 28m

Houston George Bush Intcntl

Tue 3/10

5:25 am-12:09 pm

1 stop5h 44m

$260

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 3/3

2:35 pm-12:11 am

2 stops10h 36m

Houston George Bush Intcntl

Tue 3/31

2:59 pm-11:22 pm

1 stop7h 23m

$260

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 3/3

6:00 am-3:14 pm

2 stops10h 14m

Houston George Bush Intcntl

Tue 3/10

5:23 am-5:08 pm

2 stops10h 45m

$266

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 4/11

7:07 am-12:42 pm

1 stop6h 35m

Houston George Bush Intcntl

Tue 4/14

3:11 pm-10:13 pm

1 stop6h 02m

$299

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 5/13

4:50 pm-9:59 pm

1 stop6h 09m

Houston George Bush Intcntl

Sun 5/17

5:55 am-12:18 pm

1 stop5h 23m

$299

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 2/17

12:13 pm-6:26 pm

1 stop7h 13m

Houston George Bush Intcntl

Tue 2/24

12:42 pm-12:18 am

2 stops10h 36m

$300

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 2/17

12:13 pm-6:26 pm

1 stop7h 13m

Houston George Bush Intcntl

Wed 2/18

12:15 pm-12:18 am

2 stops11h 03m

$300

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 2/27

5:40 pm-11:53 pm

1 stop7h 13m

$130

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 16 results
1
2

Compare providers for flights from Portland to George Bush Intcntl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to George Bush Intcntl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Houston George Bush Intcntl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Houston George Bush Intcntl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Houston George Bush Intcntl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Houston George Bush Intcntl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Houston George Bush Intcntl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Houston George Bush Intcntl Airport

What is the cheapest month to book a flight from Portland, Maine to Houston George Bush Intcntl Airport?

Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $126). Flying from Portland, Maine to Houston George Bush Intcntl Airport in September is currently the most expensive (average of $227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to George Bush Intcntl. Reviews last updated January 27, 2026.
Read through reviews of airlines operating flights from Portland to Houston George Bush Intcntl Airport, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,119 reviews

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,119 reviews
Delta
7.9
Good
8,119 reviews

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,205 reviews
Delta
7.9
Good
8,119 reviews

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,197 reviews
Delta
7.9
Good
8,119 reviews

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Portland to George Bush Intcntl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Houston George Bush Intcntl?

    For a flight from Portland to Houston George Bush Intcntl, you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city. Portland is the only Portland airport and it handles 0 outbound flights to Houston George Bush Intcntl per day. 3 airlines have flights to Houston George Bush Intcntl from Portland on a regular basis.

  • How long is the flight from Portland, Maine to Houston George Bush Intcntl Airport?

    There are many flights that can get you from Portland, Maine to Houston George Bush Intcntl Airport in 6h 20m. Fly via American Airlines, United Airlines, or Delta to get the fastest option. The distance between Portland, Maine and Houston George Bush Intcntl Airport is about 1664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Portland, Maine to Houston George Bush Intcntl Airport round-trip?

    United Airlines, at $247, was found to be the cheapest airline from Portland, Maine to Houston George Bush Intcntl Airport.Alternate airlines to your destination round-trip include American Airlines and Delta. Users have found that United Airlines is 38% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Portland, Maine to Houston George Bush Intcntl Airport one-way?

    The cheapest airlines for a one-way flight from Portland, Maine to Houston George Bush Intcntl Airport are Delta ($128), American Airlines ($167), and United Airlines ($174).

  • Can I find deals for flights from Portland to George Bush Intcntl that include hotel bookings?

    Yes. In addition to deals on Portland to George Bush Intcntl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to George Bush Intcntl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to George Bush Intcntl.

  • Can I find deals for business class flights from Portland to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Portland to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to Houston George Bush Intcntl Airport?

    Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $126). Flying from Portland, Maine to Houston George Bush Intcntl Airport in September is currently the most expensive (average of $227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Montgomery
Spring
Katy
The Woodlands
Tomball
Humble
Conroe
Jersey Village
Cypress

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to George Bush Intcntl

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Hobby flights
Boston to George Bush Intcntl flights
Portland to Hobby flights
Bangor to Hobby flights
Bangor to George Bush Intcntl flights
Presque Isle to George Bush Intcntl flights

Top 3 airlines flying from Portland to George Bush Intcntl

Discover the top 3 airlines that operate flights from Portland to George Bush Intcntl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$247Average$463FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$251Average$368FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$308FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.