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Cheap flights from Portland, Maine to Houston from $126

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 4/25. 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
0 bags

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Cheap round-trip flights

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American Airlines Logo
5:02 pm - 10:33 pm
PWM
-
IAH
6h 31m
1 stop
American Airlines Logo
9:26 am - 4:46 pm
IAH
-
PWM
6h 20m
1 stop
$270American Airlines
Wed, May 20 - Sun, May 24
Delta Logo
12:52 pm - 6:27 pm
PWM
-
IAH
6h 35m
1 stop
Delta Logo
2:20 pm - 12:34 am
IAH
-
PWM
9h 14m
2 stops
$275Delta
Thu, May 14 - Tue, May 19
Delta Logo
1:40 pm - 9:33 pm
PWM
-
IAH
8h 53m
1 stop
Delta Logo
5:20 am - 11:57 am
IAH
-
PWM
5h 37m
1 stop
$289Delta
Fri, May 8 - Sun, May 10
American Airlines Logo
5:40 pm - 11:53 pm
PWM
-
IAH
7h 13m
1 stop
American Airlines Logo
5:16 pm - 11:55 pm
IAH
-
PWM
5h 39m
1 stop
$295American Airlines
Wed, Mar 11 - Wed, Mar 18
American Airlines Logo
3:39 pm - 11:59 pm
PWM
-
IAH
9h 20m
2 stops
American Airlines Logo
2:25 pm - 11:22 pm
IAH
-
PWM
7h 57m
1 stop
$300American Airlines
Wed, Apr 8 - Mon, Apr 13
American Airlines Logo
5:58 pm - 11:53 pm
PWM
-
IAH
6h 55m
1 stop
American Airlines Logo
5:16 pm - 11:55 pm
IAH
-
PWM
5h 39m
1 stop
$305American Airlines
Wed, Mar 25 - Mon, Mar 30
United Airlines Logo
7:16 pm - 12:45 am
PWM
-
IAH
6h 29m
1 stop
United Airlines Logo
2:31 pm - 11:51 pm
IAH
-
PWM
8h 20m
1 stop
$308United Airlines
Thu, May 28 - Mon, Jun 1
Delta Logo
4:43 pm - 10:54 pm
PWM
-
IAH
7h 11m
1 stop
Delta Logo
12:25 pm - 11:24 pm
IAH
-
PWM
9h 59m
2 stops
$309Delta
Fri, Apr 24 - Tue, Apr 28
Multiple Airlines Logo
11:29 am - 11:46 am
PWM
-
IAH
25h 17m
2 stops
Multiple Airlines Logo
4:30 pm - 9:07 am
IAH
-
PWM
15h 37m
1 stop
$312Multiple Airlines
Mon, Apr 6 - Thu, Apr 9
American Airlines Logo
5:40 pm - 11:53 pm
PWM
-
IAH
7h 13m
1 stop
American Airlines Logo
5:16 pm - 11:55 pm
IAH
-
PWM
5h 39m
1 stop
$314American Airlines
Sun, Mar 29 - Mon, Apr 6

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
May 20
PWM5:02 pmPortland
6h 31m
1 stop
IAH10:33 pmHouston George Bush Intcntl
May 24
IAH9:26 amHouston George Bush Intcntl
6h 20m
1 stop
PWM4:46 pmPortland
$270
American Airlines
Mar 11
PWM5:40 pmPortland
7h 13m
1 stop
IAH11:53 pmHouston George Bush Intcntl
Mar 18
IAH5:16 pmHouston George Bush Intcntl
5h 39m
1 stop
PWM11:55 pmPortland
$295
American Airlines
Apr 8
PWM3:39 pmPortland
9h 20m
2 stops
IAH11:59 pmHouston George Bush Intcntl
Apr 13
IAH2:25 pmHouston George Bush Intcntl
7h 57m
1 stop
PWM11:22 pmPortland
$300

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

Our best United Airlines deals on Portland, Maine to Houston George Bush Intcntl Airport flight tickets
United Airlines
May 28
PWM7:16 pmPortland
6h 29m
1 stop
IAH12:45 amHouston George Bush Intcntl
Jun 1
IAH2:31 pmHouston George Bush Intcntl
8h 20m
1 stop
PWM11:51 pmPortland
$308
United Airlines
Mar 21
PWM4:23 pmPortland
8h 46m
1 stop
IAH12:09 amHouston George Bush Intcntl
Mar 28
IAH2:45 pmHouston George Bush Intcntl
7h 07m
1 stop
PWM10:52 pmPortland
$343
United Airlines
Apr 28
PWM3:22 pmPortland
9h 25m
1 stop
IAH11:47 pmHouston George Bush Intcntl
May 2
IAH11:55 amHouston George Bush Intcntl
8h 24m
1 stop
PWM9:19 pmPortland
$379

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 February 16, 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

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 5/20

5:02 pm-10:33 pm

1 stop6h 31m

Houston George Bush Intcntl

Sun 5/24

9:26 am-4:46 pm

1 stop6h 20m

$270

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 5/14

12:52 pm-6:27 pm

1 stop6h 35m

Houston George Bush Intcntl

Tue 5/19

2:20 pm-12:34 am

2 stops9h 14m

$275

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 5/8

1:40 pm-9:33 pm

1 stop8h 53m

Houston George Bush Intcntl

Sun 5/10

5:20 am-11:57 am

1 stop5h 37m

$289

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 3/11

5:40 pm-11:53 pm

1 stop7h 13m

Houston George Bush Intcntl

Wed 3/18

5:16 pm-11:55 pm

1 stop5h 39m

$295

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 4/8

3:39 pm-11:59 pm

2 stops9h 20m

Houston George Bush Intcntl

Mon 4/13

2:25 pm-11:22 pm

1 stop7h 57m

$300

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 3/25

5:58 pm-11:53 pm

1 stop6h 55m

Houston George Bush Intcntl

Mon 3/30

5:16 pm-11:55 pm

1 stop5h 39m

$305

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 5/28

7:16 pm-12:45 am

1 stop6h 29m

Houston George Bush Intcntl

Mon 6/1

2:31 pm-11:51 pm

1 stop8h 20m

$308

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 4/24

4:43 pm-10:54 pm

1 stop7h 11m

Houston George Bush Intcntl

Tue 4/28

12:25 pm-11:24 pm

2 stops9h 59m

$309

PortlandHouston

PWM - IAH

PWMIAH

Portland

Mon 4/6

11:29 am-11:46 am

2 stops25h 17m

Houston George Bush Intcntl

Thu 4/9

4:30 pm-9:07 am

1 stop15h 37m

$312

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sun 3/29

5:40 pm-11:53 pm

1 stop7h 13m

Houston George Bush Intcntl

Mon 4/6

5:16 pm-11:55 pm

1 stop5h 39m

$314

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 July is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Portland, Maine, with most prices found around $282. If you are unable to visit Houston George Bush Intcntl Airport during the month of July, then departing from Portland, Maine during the month April is also very affordable. Most momondo users find prices during this month for around $315.

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 to Houston George Bush Intcntl flights?

There is only 1 cabin class available to choose from on Portland to Houston George Bush Intcntl 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?

No. A direct flight is the cheapest option for a flight between Portland, Maine to Houston George Bush Intcntl Airport.

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

As of February 2026, prices for Portland, Maine to Houston George Bush Intcntl Airport flights are approximately 29% cheaper 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 35m

Direct flights

Sun
The fastest flight from Portland, Maine to Houston George Bush Intcntl Airport takes 6h 35m
Direct flights go from Portland, Maine to Houston George Bush Intcntl Airport on Sunday. There are no airlines offering direct flights.
Search flight deals

  • 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 35m.

  • 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
United AirlinesPriceFrom $247Free CancellationRating
7.4
9,299 reviews
Search United Airlines flights
American AirlinesPriceFrom $251Free CancellationRating
7.2
11,294 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,204 reviews
Search Delta flights

Traveling to a place near Houston?

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

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.

An easier way to manage your Houston George Bush Intcntl Airport trip

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