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George Bush Intcntl

$162+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IAH
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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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 April 24, 2026.

This Delta deal was found by Cheapflights users on 4/23. 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.
Sat 5/2311:55 am
PWM
-
IAH
1 stop8h 56m
Delta
Sat 5/302:20 pm
IAH
-
PWM
1 stop7h 49m
Delta
Deal found 4/23$273
This Delta deal was found by Cheapflights users on 4/20. 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 5/206:02 am
PWM
-
IAH
1 stop8h 47m
Delta
Mon 5/255:20 am
IAH
-
PWM
1 stop5h 35m
Delta
Deal found 4/20$293
This Delta deal was found by Cheapflights users on 4/23. 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.
Fri 6/56:00 am
PWM
-
IAH
2 stops14h 09m
Delta
Mon 6/85:20 am
IAH
-
PWM
1 stop5h 35m
Delta
Deal found 4/23$301
This Delta deal was found by Cheapflights users on 4/23. 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 8/256:30 am
PWM
-
IAH
2 stops10h 58m
Delta
Sat 8/2911:50 am
IAH
-
PWM
2 stops11h 09m
Delta
Deal found 4/23$303
This Delta deal was found by Cheapflights users on 4/23. 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 5/132:05 pm
PWM
-
IAH
1 stop6h 55m
Delta
Sun 5/175:55 am
IAH
-
PWM
1 stop6h 15m
Delta
Deal found 4/23$310
This Delta deal was found by Cheapflights users on 4/23. 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 5/1311:03 am
PWM
-
IAH
2 stops9h 57m
Delta
Mon 5/182:20 pm
IAH
-
PWM
1 stop7h 49m
Delta
Deal found 4/23$315
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:57 am
PWM
-
IAH
1 stop10h 20m
Multiple Airlines
Tue 5/57:44 pm
IAH
-
PWM
2 stops19h 32m
Multiple Airlines
Deal found 4/21$321
This Delta deal was found by Cheapflights users on 4/23. 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 5/206:02 am
PWM
-
IAH
2 stops10h 20m
Delta
Sun 5/245:20 am
IAH
-
PWM
2 stops10h 51m
Delta
Deal found 4/23$338

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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$273
(Delta)

One-way from

$162
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$507
Provider with most accurate pricing for Portland-Houston George Bush Intcntl flight deals.
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Provider most trusted by Cheapflights users for Portland-Houston George Bush Intcntl flights.
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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 ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 24, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 8/25

6:00 am-12:07 pm

1 stop7h 07m

Houston George Bush Intcntl

Sat 8/29

1:15 pm-10:33 pm

1 stop8h 18m

$293

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 5/13

2:05 pm-8:00 pm

1 stop6h 55m

Houston George Bush Intcntl

Sun 5/17

5:55 am-1:10 pm

1 stop6h 15m

$293

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 6/5

6:00 am-7:09 pm

2 stops14h 09m

Houston George Bush Intcntl

Mon 6/8

5:20 am-11:55 am

1 stop5h 35m

$301
Quickest round-trip

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 5/22

2:05 pm-8:00 pm

1 stop6h 55m

Houston George Bush Intcntl

Mon 5/25

5:20 am-11:55 am

1 stop5h 35m

$349

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 8/19

6:30 am-4:28 pm

2 stops10h 58m

Houston George Bush Intcntl

Sun 8/23

1:15 pm-11:59 pm

2 stops9h 44m

$372

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 5/13

6:02 am-2:30 pm

2 stops9h 28m

Houston George Bush Intcntl

Mon 5/18

2:20 pm-11:09 pm

1 stop7h 49m

$373
Cheapest one-way

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 5/9

5:01 pm-9:03 am

2 stops41h 02m

$177

PortlandHouston

PWM - IAH

PWMIAH

Portland

Mon 6/1

9:52 am-8:50 am

1 stop23h 58m

$184

PortlandHouston

PWM - IAH

PWMIAH

Portland

Mon 6/1

6:02 am-3:22 pm

2 stops10h 20m

$194

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sun 5/24

7:52 am-3:46 pm

1 stop8h 54m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 11 resultsSorted by cheapest first
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 April.
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, July is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $285). Flying from Portland, Maine to Houston George Bush Intcntl Airport in December is currently the most expensive (average of $616). 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.

How much does it cost to fly round-trip from Portland, Maine to Houston George Bush Intcntl Airport?

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 April 24, 2026.
Read through reviews of airlines operating flights from Portland to Houston George Bush Intcntl Airport, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

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
8,450 reviews
Delta
7.9
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

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
9,643 reviews
Delta
7.9
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

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
7.1
Good
11,666 reviews
Delta
7.9
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

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 7h 07m. Fly via Delta to get the fastest option. The distance between Portland, Maine and Houston George Bush Intcntl Airport is about 1664 mi.

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

    American Airlines, at $251, was found to be the cheapest airline from Portland, Maine to Houston George Bush Intcntl Airport.Alternate airlines to your destination round-trip include Delta and United Airlines. Users have found that American 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 ($173), and United Airlines ($195).

  • 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, July is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $285). Flying from Portland, Maine to Houston George Bush Intcntl Airport in December is currently the most expensive (average of $616). 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
Katy
The Woodlands
Spring
Montgomery
Tomball
Jersey Village
Humble
Cypress
Conroe

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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
Bangor to Hobby flights
Bangor 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 April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$251Average$368FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$308FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$436FlexibilityNo cancel feeOn-time69%

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