$148+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IAH
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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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
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Cheapest flights from Portland to George Bush IntcntlExplore 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 23, 2026.
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 23, 2026.
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/288:00 am
PWM
- IAH
1 stop8h 31m
American Airlines
Mon 8/314:50 pm
IAH
- PWM
1 stop5h 57m
American Airlines
Deal found 7/19![American Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/20. 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.
Fri 8/2811:01 am
PWM
- IAH
2 stops11h 20m
Delta
Mon 8/312:37 pm
IAH
- PWM
1 stop7h 36m
Delta
Deal found 7/20![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 7/22. 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 11/124:50 pm
PWM
- IAH
1 stop6h 14m
Delta
Mon 11/165:25 am
IAH
- PWM
1 stop5h 28m
Delta
Deal found 7/22![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:30 am
PWM
- IAH
1 stop7h 04m
American Airlines
Fri 8/284:10 pm
IAH
- PWM
1 stop6h 27m
American Airlines
Deal found 7/21![American Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 7/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:08 pm
PWM
- IAH
1 stop8h 22m
United Airlines
Sun 11/87:20 am
IAH
- PWM
1 stop6h 00m
United Airlines
Deal found 7/20![United Airlines logo]()
$366
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:33 pm
PWM
- IAH
1 stop7h 25m
American Airlines
Tue 8/410:18 am
IAH
- PWM
1 stop5h 51m
American Airlines
Deal found 7/21![American Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 7/18. 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 8/156:05 am
PWM
- IAH
1 stop8h 22m
Delta
Sat 8/2212:12 pm
IAH
- PWM
1 stop8h 19m
Delta
Deal found 7/18![Delta logo]()
$384
Best flights from Portland to George Bush IntcntlDiscover carefully curated flight deals from Portland to George Bush Intcntl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
Discover carefully curated flight deals from Portland to George Bush Intcntl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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.
Fri 8/2811:01 am
PWM
- IAH
2 stops11h 20m
Delta
Mon 8/312:37 pm
IAH
- PWM
1 stop7h 36m
Delta
Deal found 7/20![Delta logo]()
$354
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/196:02 am
PWM
- IAH
2 stops8h 17m
American Airlines
Mon 8/247:15 am
IAH
- PWM
1 stop6h 06m
American Airlines
Deal found 7/19![American Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 7/18. 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 8/136:00 am
PWM
- IAH
2 stops10h 42m
Delta
Mon 8/172:00 pm
IAH
- PWM
1 stop8h 30m
Delta
Deal found 7/18![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 7/19. 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 8/1911:01 am
PWM
- IAH
2 stops11h 20m
Delta
Mon 8/245:20 am
IAH
- PWM
2 stops10h 30m
Delta
Deal found 7/19![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 7/19. 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 8/76:05 am
PWM
- IAH
1 stop8h 22m
Delta
Fri 8/142:37 pm
IAH
- PWM
2 stops9h 22m
Delta
Deal found 7/19![Delta logo]()
$419
Last-minute flights from Portland to George Bush IntcntlDiscover last-minute flight deals from Portland to George Bush Intcntl. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to George Bush Intcntl. Data last updated July 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:33 pm
PWM
- IAH
1 stop7h 25m
American Airlines
Tue 8/410:18 am
IAH
- PWM
1 stop5h 51m
American Airlines
Deal found 7/21![American Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 7/18. 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 8/156:05 am
PWM
- IAH
1 stop8h 22m
Delta
Sat 8/2212:12 pm
IAH
- PWM
1 stop8h 19m
Delta
Deal found 7/18![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 7/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:02 am
PWM
- IAH
2 stops8h 17m
American Airlines
Wed 8/262:09 pm
IAH
- PWM
2 stops8h 38m
American Airlines
Deal found 7/20![American Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 7/22. 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 8/2211:50 am
PWM
- IAH
2 stops13h 02m
Delta
Sun 8/305:41 am
IAH
- PWM
2 stops9h 20m
Delta
Deal found 7/22![Delta logo]()
$364
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:30 am
PWM
- IAH
1 stop7h 04m
American Airlines
Fri 8/284:10 pm
IAH
- PWM
1 stop6h 27m
American Airlines
Deal found 7/21![American Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/288:00 am
PWM
- IAH
1 stop8h 31m
American Airlines
Mon 8/314:50 pm
IAH
- PWM
1 stop5h 57m
American Airlines
Deal found 7/19![American Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/20. 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.
Fri 8/2811:01 am
PWM
- IAH
2 stops11h 20m
Delta
Mon 8/312:37 pm
IAH
- PWM
1 stop7h 36m
Delta
Deal found 7/20![Delta logo]()
$354
One-way flights from Portland to George Bush IntcntlSearch for one-way flight options from Portland to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
Search for one-way flight options from Portland to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This JetBlue deal was found by Cheapflights users on 7/19. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am
PWM
- IAH
1 stop6h 00m
JetBlue
Deal found 7/19![JetBlue logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Mon 9/289:48 am
PWM
- IAH
1 stop12h 12m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Fri 9/116:00 am
PWM
- IAH
2 stops34h 05m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Thu 9/248:14 pm
PWM
- IAH
2 stops17h 26m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 9/285:08 pm
PWM
- IAH
1 stop6h 37m
United Airlines
Deal found 7/22![United Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Mon 10/127:00 am
PWM
- IAH
2 stops33h 05m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$179
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:06 pm
PWM
- IAH
1 stop8h 34m
American Airlines
Deal found 7/21![American Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:09 pm
PWM
- IAH
2 stops22h 56m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$192
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 July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (American Airlines) |
One-way from | $148 (JetBlue) |
Popular in | July |
Cheapest in | October |
Average price | $642 |
Good one-way deal | $293 or less |
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 23, 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
Cheapest round-trip
PortlandHouston
PWM - IAH
PWMIAH
Portland
Fri 8/28
11:01 am-9:21 pm
2 stops11h 20m
Houston George Bush Intcntl
Mon 8/31
2:37 pm-11:13 pm
1 stop7h 36m
$354
Quickest round-trip
PortlandHouston
PWM - IAH
PWMIAH
Portland
Wed 8/19
6:02 am-1:19 pm
2 stops8h 17m
Houston George Bush Intcntl
Mon 8/24
7:15 am-2:21 pm
1 stop6h 06m
$354
PortlandHouston
PWM - IAH
PWMIAH
Portland
Thu 8/13
6:00 am-3:42 pm
2 stops10h 42m
Houston George Bush Intcntl
Mon 8/17
2:00 pm-11:30 pm
1 stop8h 30m
$354
PortlandHouston
PWM - IAH
PWMIAH
Portland
Wed 8/19
11:01 am-9:21 pm
2 stops11h 20m
Houston George Bush Intcntl
Mon 8/24
5:20 am-4:50 pm
2 stops10h 30m
$359
PortlandHouston
PWM - IAH
PWMIAH
Portland
Fri 8/7
6:05 am-1:27 pm
1 stop8h 22m
Houston George Bush Intcntl
Fri 8/14
2:37 pm-12:59 am
2 stops9h 22m
$419
Cheapest one-way
Quickest one-way
PortlandHouston
PWM - IAH
PWMIAH
Portland
Fri 8/28
6:00 am-11:00 am
1 stop6h 00m
$148
PortlandHouston
PWM - IAH
PWMIAH
Portland
Fri 9/11
9:48 am-9:00 pm
1 stop12h 12m
$173
PortlandHouston
PWM - IAH
PWMIAH
Portland
Mon 9/28
5:30 am-1:21 pm
1 stop8h 51m
$175
PortlandHouston
PWM - IAH
PWMIAH
Portland
Thu 9/24
5:08 pm-10:45 pm
1 stop6h 37m
$175
PortlandHouston
PWM - IAH
PWMIAH
Portland
Thu 8/6
8:22 pm-7:20 am
2 stops35h 58m
$194
Showing 1-10 of 15 resultsSorted by cheapest first
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
PWM-IAH
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, October is the cheapest month in which you can book a flight from Portland, Maine to Houston George Bush Intcntl Airport (average of $348). Flying from Portland, Maine to Houston George Bush Intcntl Airport in July is currently the most expensive (average of $642). 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 23, 2026.
When flying from Portland, Maine to Houston George Bush Intcntl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 23, 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.
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
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 locationsKaty
The Woodlands
Spring
Conroe
Jersey Village
Humble
Tomball
Cypress
Montgomery
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Other flights to George Bush Intcntl
Explore flights to George Bush Intcntl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 23, 2026.
Portland and George Bush Intcntl flights
Browse other Portland and George Bush Intcntl flight options. Last updated on July 23, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on July 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$251 | Average$374 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$260 | Average$358 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$288 | Average$440 | FlexibilityNo cancel fee | On-time69% |