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George Bush Intcntl

$129+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IAH
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This Delta deal was found by Cheapflights users on 12/11. 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.
Thu 12/186:08 amPWM - IAH
1 stop7h 23mDelta
Thu 12/255:20 amIAH - PWM
1 stop5h 57mDelta
Deal found 12/11$354
This American Airlines deal was found by Cheapflights users on 12/11. 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 12/187:17 amPWM - IAH
1 stop7h 46mAmerican Airlines
Thu 12/257:26 amIAH - PWM
2 stops9h 45mAmerican Airlines
Deal found 12/11$384
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:55 pmPWM - IAH
1 stop8h 50mUnited Airlines
Tue 12/231:35 pmIAH - PWM
1 stop8h 47mUnited Airlines
Deal found 12/9$461
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:25 pmPWM - IAH
1 stop8h 34mUnited Airlines
Wed 12/176:30 amIAH - PWM
1 stop6h 52mUnited Airlines
Deal found 12/10$467
This Delta deal was found by Cheapflights users on 12/10. 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 12/136:08 amPWM - IAH
2 stops11h 26mDelta
Wed 12/175:10 amIAH - PWM
2 stops9h 57mDelta
Deal found 12/10$477
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/125:17 pmPWM - IAH
1 stop6h 46mAmerican Airlines
Sun 12/145:15 pmIAH - PWM
1 stop5h 22mAmerican Airlines
Deal found 12/10$517
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:55 pmPWM - IAH
1 stop8h 50mUnited Airlines
Mon 12/297:25 amIAH - PWM
1 stop6h 15mUnited Airlines
Deal found 12/9$519

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$225
(Kiwi.com)

One-way from

$130
(Delta)

Popular in

January

Cheapest in

December

Average price

$228
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
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One-way flight from Portland to Houston George Bush Intcntl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 12, 2025.
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

Sat 1/17

5:30 am-12:48 pm

1 stop8h 18m

Houston George Bush Intcntl

Tue 1/20

10:25 am-5:16 pm

1 stop5h 51m

$251

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 1/21

12:20 pm-6:46 pm

1 stop7h 26m

Houston George Bush Intcntl

Sat 1/24

5:15 am-12:08 pm

1 stop5h 53m

$251

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 2/25

12:15 pm-6:26 pm

1 stop7h 11m

Houston George Bush Intcntl

Wed 3/4

5:30 am-12:00 pm

1 stop5h 30m

$251

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 1/28

6:00 am-1:59 pm

1 stop8h 59m

Houston George Bush Intcntl

Wed 2/4

5:15 am-12:03 pm

1 stop5h 48m

$251

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 1/24

6:17 am-3:23 pm

1 stop10h 06m

Houston George Bush Intcntl

Wed 1/28

10:25 am-5:16 pm

1 stop5h 51m

$251

PortlandHouston

PWM - IAH

PWMIAH

Portland

Mon 1/26

11:29 am-9:43 pm

1 stop11h 14m

Houston George Bush Intcntl

Tue 1/27

4:35 pm-10:22 am

2 stops16h 47m

$253

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 2/4

6:00 am-1:43 pm

1 stop8h 43m

Houston George Bush Intcntl

Fri 2/6

5:14 pm-11:43 pm

1 stop5h 29m

$255

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 1/17

3:05 pm-11:59 pm

1 stop9h 54m

Houston George Bush Intcntl

Sun 1/18

6:30 am-1:56 pm

1 stop6h 26m

$255

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 1/29

5:30 am-11:31 am

1 stop7h 01m

Houston George Bush Intcntl

Wed 2/4

2:55 pm-11:22 pm

1 stop7h 27m

$255

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sun 2/8

6:00 am-11:57 am

1 stop6h 57m

$130

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 19 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Houston George Bush Intcntl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $123). 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.

What is the cheapest time of day to fly from PWM to IAH?

Find hourly flight availability from Portland to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

When flying from Portland, Maine to Houston George Bush Intcntl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 32% versus a flight at noon.

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 December 12, 2025.
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
8,007 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
9,095 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
11,050 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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.
Frontier
5.8
Fair
3,084 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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. 4 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 8h 18m. 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?

    Frontier, at $218, 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 Frontier is 42% 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 $123). 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
Jersey Village
Humble
Conroe
Cypress

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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.
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Top 4 airlines flying from Portland to George Bush Intcntl

Discover the top 4 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$218Average$218FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$256Average$368FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$308FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$295Average$432FlexibilityNo cancel feeOn-time69%

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