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Cheap flights from Portland, Maine to Houston from $148

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Houston departing on 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland, Maine to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:05 am - 1:27 pm
PWM
-
IAH
8h 22m
1 stop
Delta Logo
2:37 pm - 11:13 pm
IAH
-
PWM
7h 36m
1 stop
$334Delta
Tue, Aug 18 - Mon, Aug 24
Delta Logo
6:00 am - 1:33 pm
PWM
-
IAH
8h 33m
1 stop
Delta Logo
12:06 pm - 12:59 am
IAH
-
PWM
11h 53m
2 stops
$339Delta
Fri, Jul 17 - Sat, Jul 25
Delta Logo
6:00 am - 1:27 pm
PWM
-
IAH
8h 27m
2 stops
Delta Logo
2:37 pm - 12:59 am
IAH
-
PWM
9h 22m
2 stops
$344Delta
Tue, Aug 18 - Mon, Aug 24
Delta Logo
3:00 pm - 9:38 pm
PWM
-
IAH
7h 38m
1 stop
Delta Logo
5:55 am - 12:18 pm
IAH
-
PWM
5h 23m
1 stop
$349Delta
Thu, Nov 12 - Mon, Nov 16
Delta Logo
8:00 am - 1:40 pm
PWM
-
IAH
6h 40m
1 stop
Delta Logo
9:40 am - 7:29 pm
IAH
-
PWM
8h 49m
2 stops
$354Delta
Thu, Nov 12 - Mon, Nov 16
Delta Logo
2:35 pm - 11:58 pm
PWM
-
IAH
10h 23m
2 stops
Delta Logo
5:55 am - 4:10 pm
IAH
-
PWM
9h 15m
2 stops
$359Delta
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
8:50 am - 4:19 pm
PWM
-
IAH
8h 29m
1 stop
American Airlines Logo
9:03 am - 6:52 pm
IAH
-
PWM
8h 49m
1 stop
$368American Airlines
Tue, Aug 25 - Fri, Aug 28
American Airlines Logo
5:30 am - 1:19 pm
PWM
-
IAH
8h 49m
2 stops
American Airlines Logo
4:50 pm - 11:59 pm
IAH
-
PWM
6h 09m
1 stop
$373American Airlines
Tue, Aug 25 - Fri, Aug 28
American Airlines Logo
5:30 am - 1:19 pm
PWM
-
IAH
8h 49m
2 stops
American Airlines Logo
2:09 pm - 11:37 pm
IAH
-
PWM
8h 28m
2 stops
$378American Airlines
Tue, Aug 25 - Fri, Aug 28
American Airlines Logo
2:56 pm - 10:49 pm
PWM
-
IAH
8h 53m
1 stop
American Airlines Logo
3:06 pm - 10:47 pm
IAH
-
PWM
6h 41m
1 stop
$383American Airlines
Fri, Jul 17 - Sat, Jul 25

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American Airlines flights from Portland, Maine to Houston George Bush Intcntl Airport

Our best American Airlines deals on Portland, Maine to Houston George Bush Intcntl Airport flight tickets
American Airlines
Aug 25
PWM8:50 amPortland
8h 29m
1 stop
IAH4:19 pmHouston George Bush Intcntl
Aug 28
IAH9:03 amHouston George Bush Intcntl
8h 49m
1 stop
PWM6:52 pmPortland
$368
American Airlines
Aug 25
PWM5:30 amPortland
8h 49m
2 stops
IAH1:19 pmHouston George Bush Intcntl
Aug 28
IAH4:50 pmHouston George Bush Intcntl
6h 09m
1 stop
PWM11:59 pmPortland
$373
American Airlines
Aug 25
PWM5:30 amPortland
8h 49m
2 stops
IAH1:19 pmHouston George Bush Intcntl
Aug 28
IAH2:09 pmHouston George Bush Intcntl
8h 28m
2 stops
PWM11:37 pmPortland
$378

Delta flights from Portland, Maine to Houston George Bush Intcntl Airport

Our best Delta deals on Portland, Maine to Houston George Bush Intcntl Airport flight tickets
Delta
Jul 17
PWM6:59 pmPortland
5h 58m
1 stop
IAH11:57 pmHouston George Bush Intcntl
Jul 25
IAH5:40 amHouston George Bush Intcntl
6h 10m
1 stop
PWM12:50 pmPortland
$334
Delta
Jul 17
PWM6:59 pmPortland
5h 58m
1 stop
IAH11:57 pmHouston George Bush Intcntl
Jul 25
IAH12:06 pmHouston George Bush Intcntl
11h 53m
2 stops
PWM12:59 amPortland
$339
Delta
Aug 18
PWM6:00 amPortland
8h 27m
2 stops
IAH1:27 pmHouston George Bush Intcntl
Aug 24
IAH2:37 pmHouston George Bush Intcntl
9h 22m
2 stops
PWM12:59 amPortland
$344

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to Houston George Bush Intcntl Airport 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, momondo users made 832,500 searches. Data last updated June 30, 2026.
Use the filters below to find and compare flights from Portland, Maine 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 8/18

6:05 am-1:27 pm

1 stop8h 22m

Houston George Bush Intcntl

Mon 8/24

2:37 pm-11:13 pm

1 stop7h 36m

$334

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 7/17

6:00 am-1:33 pm

1 stop8h 33m

Houston George Bush Intcntl

Sat 7/25

12:06 pm-12:59 am

2 stops11h 53m

$339

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 8/18

6:00 am-1:27 pm

2 stops8h 27m

Houston George Bush Intcntl

Mon 8/24

2:37 pm-12:59 am

2 stops9h 22m

$344
Quickest round-trip

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 11/12

3:00 pm-9:38 pm

1 stop7h 38m

Houston George Bush Intcntl

Mon 11/16

5:55 am-12:18 pm

1 stop5h 23m

$349

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 11/12

8:00 am-1:40 pm

1 stop6h 40m

Houston George Bush Intcntl

Mon 11/16

9:40 am-7:29 pm

2 stops8h 49m

$354

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 11/12

2:35 pm-11:58 pm

2 stops10h 23m

Houston George Bush Intcntl

Mon 11/16

5:55 am-4:10 pm

2 stops9h 15m

$359

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 8/25

8:50 am-4:19 pm

1 stop8h 29m

Houston George Bush Intcntl

Fri 8/28

9:03 am-6:52 pm

1 stop8h 49m

$368

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 8/25

5:30 am-1:19 pm

2 stops8h 49m

Houston George Bush Intcntl

Fri 8/28

4:50 pm-11:59 pm

1 stop6h 09m

$373

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 8/25

5:30 am-1:19 pm

2 stops8h 49m

Houston George Bush Intcntl

Fri 8/28

2:09 pm-11:37 pm

2 stops8h 28m

$378

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 7/17

2:56 pm-10:49 pm

1 stop8h 53m

Houston George Bush Intcntl

Sat 7/25

3:06 pm-10:47 pm

1 stop6h 41m

$383

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Houston from

How to get the cheapest flight ticket from Portland, Maine to Houston George Bush Intcntl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Houston George Bush Intcntl Airport?

The month of November is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Portland, Maine, with most prices found around $348. If you are unable to visit Houston George Bush Intcntl Airport during the month of November, then departing from Portland, Maine during the month October is also very affordable. Most momondo users find prices during this month for around $348.

What is the cheapest Portland to Houston George Bush Intcntl flight route?

Fly from Portland to Houston George Bush Intcntl for the best Portland - Houston George Bush Intcntl flight prices

What cabin class options are available on Portland, Maine to Houston George Bush Intcntl Airport flights?

There are 2 cabin classes available to choose from on Portland, Maine to Houston George Bush Intcntl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland, Maine to Houston George Bush Intcntl Airport flights?

You could potentially save up to 15% on your flight if you consider stops on a Portland, Maine to Houston George Bush Intcntl Airport flight.

How have Portland, Maine to Houston George Bush Intcntl Airport flight prices changed over time?

As of June 2026, prices for Portland, Maine to Houston George Bush Intcntl Airport flights are approximately 64% more expensive when compared to flights at the same time last year.

When to book flights from Portland, Maine to Houston George Bush Intcntl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Houston George Bush Intcntl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Houston George Bush Intcntl Airport (PWM to IAH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Houston George Bush Intcntl Airport

Fastest flight time

6h 01m

Direct flights

Sun
The fastest flight from Portland, Maine to Houston George Bush Intcntl Airport takes 6h 01m
Direct flights go from Portland, Maine to Houston George Bush Intcntl Airport on Sunday. There are no airlines offering direct flights.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Houston George Bush Intcntl Airport

  • How far is Portland to Houston George Bush Intcntl by plane?

    A flight from Portland to Houston George Bush Intcntl will travel around 1666.8 mi. In terms of flight time, this usually takes a little over 6h 01m.

  • When did momondo last update prices for flights from Portland Airport to Houston George Bush Intcntl Airport?

    Prices for flights from Portland Airport to Houston George Bush Intcntl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Houston George Bush Intcntl Airport?

  • How old do you have to be to fly from Portland Airport to Houston George Bush Intcntl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The travel and health documents required for your trip to Houston George Bush Intcntl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Houston George Bush Intcntl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Portland, Maine to Houston George Bush Intcntl Airport?

  • What is the most popular airline from Portland, Maine to Houston George Bush Intcntl Airport?

Best airlines flying from Portland, Maine to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Portland, Maine to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $251Free CancellationRating
7.1
11,762 reviews
Search American Airlines flights
DeltaPriceFrom $260Free CancellationRating
7.8
8,451 reviews
Search Delta flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
9,901 reviews
Search United Airlines flights

Traveling to a place near Houston?

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

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Houston?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Houston from Portland.

Can I find flights from Portland to Houston with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Houston from Portland with this policy.

How can momondo help me find flights from Portland to Houston?

momondo provides multiple filters to help you find the best flight to Houston from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Houston right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to Houston flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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