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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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IAH
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap 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 July 30, 2025.

Round-trip from

$257
(Delta)

One-way from

$129
(Delta)

Popular in

May

Cheapest in

September

Average price

$278
From Portland to Houston George Bush Intcntl
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One-way flight from Portland to Houston George Bush Intcntl
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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. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 30, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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 8/276:33 pmPWM - IAH
1 stop5h 54mDelta
Wed 9/36:00 amIAH - PWM
1 stop9h 10mDelta
Deal found 7/30$257
This American Airlines deal was found by Cheapflights users on 7/30. 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 8/139:08 amPWM - IAH
1 stop7h 38mAmerican Airlines
Tue 8/2610:07 amIAH - PWM
1 stop6h 39mAmerican Airlines
Deal found 7/30$314
This United Airlines deal was found by Cheapflights users on 7/30. 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 10/165:41 pmPWM - IAH
1 stop6h 49mUnited Airlines
Sun 10/196:30 amIAH - PWM
1 stop7h 03mUnited Airlines
Deal found 7/30$388
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/163:15 pmPWM - IAH
2 stops10h 02mMultiple Airlines
Sun 10/197:30 pmIAH - PWM
1 stop12h 36mMultiple Airlines
Deal found 7/30$427

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 July 30, 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

Wed 8/27

6:33 pm-11:27 pm

1 stop5h 54m

Houston George Bush Intcntl

Wed 9/3

6:00 am-4:10 pm

1 stop9h 10m

$257

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 8/13

9:08 am-3:46 pm

1 stop7h 38m

Houston George Bush Intcntl

Tue 8/26

10:07 am-5:46 pm

1 stop6h 39m

$314

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 10/16

5:41 pm-11:30 pm

1 stop6h 49m

Houston George Bush Intcntl

Sun 10/19

6:30 am-2:33 pm

1 stop7h 03m

$388

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 10/16

3:15 pm-12:17 am

2 stops10h 02m

Houston George Bush Intcntl

Sun 10/19

7:30 pm-9:06 am

1 stop12h 36m

$427

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 8/22

11:48 am-5:35 pm

1 stop6h 47m

$129

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 8/23

1:41 pm-3:45 pm

1 stop27h 04m

$131

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 9/27

5:10 pm-10:25 pm

1 stop6h 15m

$167

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 9/10

3:21 pm-10:26 pm

3 stops32h 05m

$249

PortlandHouston

PWM - IAH

PWMIAH

Portland

Mon 9/29

8:00 am-8:49 pm

2 stops13h 49m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, August is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $241). Flying from Portland, Maine to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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 July 30, 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 at noon, which can drop the price by up to 8% versus a flight in the morning.

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 July 30, 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
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.9
Fair
3,237 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    Delta, at $257, 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 United Airlines. Users have found that Delta is 29% 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 ($129), Frontier ($131), and American Airlines ($167).

  • 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, August is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $241). Flying from Portland, Maine to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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
Humble
Conroe
The Woodlands
Tomball
Katy
Jersey Village

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$208Average$218FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$236Average$397FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$295FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$260Average$424FlexibilityNo cancel feeOn-time69%

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