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Cheap flights from Portland, Maine to Houston from $180

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 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
9:47 am - 6:58 pmPWM-IAH
10h 11m1 stop
Multiple Airlines Logo
8:28 pm - 10:22 amIAH-PWM
12h 54m1 stop
$237Multiple Airlines
Find Deal
Fri, Jan 16 - Fri, Jan 23
Multiple Airlines Logo
5:06 pm - 1:20 pmPWM-IAH
45h 14m2 stops
Multiple Airlines Logo
8:28 pm - 10:22 amIAH-PWM
12h 54m1 stop
$248Multiple Airlines
Find Deal
Fri, Jan 16 - Fri, Jan 23
Delta Logo
4:53 pm - 10:23 pmPWM-IAH
6h 30m1 stop
Delta Logo
1:55 pm - 10:27 pmIAH-PWM
7h 32m1 stop
$251Delta
Find Deal
Tue, Dec 16 - Tue, Jan 13
American Airlines Logo
10:57 am - 4:52 pmPWM-IAH
6h 55m1 stop
American Airlines Logo
5:23 pm - 11:49 pmIAH-PWM
5h 26m1 stop
$255American Airlines
Find Deal
Thu, Feb 26 - Tue, Mar 3
Delta Logo
4:43 pm - 11:59 pmPWM-IAH
8h 16m2 stops
Delta Logo
5:20 am - 12:13 pmIAH-PWM
5h 53m1 stop
$256Delta
Find Deal
Tue, Dec 2 - Sat, Dec 6
Delta Logo
6:00 am - 12:16 pmPWM-IAH
7h 16m1 stop
Delta Logo
5:25 am - 11:55 amIAH-PWM
5h 30m1 stop
$259Delta
Find Deal
Sat, May 2 - Tue, May 5
American Airlines Logo
10:57 am - 4:52 pmPWM-IAH
6h 55m1 stop
American Airlines Logo
12:22 pm - 11:49 pmIAH-PWM
10h 27m2 stops
$260American Airlines
Find Deal
Thu, Feb 26 - Tue, Mar 3
Delta Logo
4:43 pm - 11:59 pmPWM-IAH
8h 16m2 stops
Delta Logo
7:01 am - 4:00 pmIAH-PWM
7h 59m2 stops
$261Delta
Find Deal
Tue, Dec 2 - Sat, Dec 6
American Airlines Logo
5:20 am - 1:51 pmPWM-IAH
9h 31m2 stops
American Airlines Logo
10:20 am - 4:37 pmIAH-PWM
5h 17m1 stop
$264American Airlines
Find Deal
Fri, Jan 9 - Mon, Jan 12
American Airlines Logo
7:02 am - 5:36 pmPWM-IAH
11h 34m2 stops
American Airlines Logo
12:11 pm - 11:37 pmIAH-PWM
10h 26m2 stops
$265American Airlines
Find Deal
Wed, Dec 10 - Mon, Dec 15

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
Dec 2
PWM3:00 pmPortland
9h 44m
1 stop
IAH11:44 pmHouston George Bush Intcntl
Dec 6
IAH7:20 amHouston George Bush Intcntl
6h 02m
1 stop
PWM2:22 pmPortland
$284
Find similar
United Airlines
Dec 1
PWM4:52 pmPortland
8h 07m
1 stop
IAH11:59 pmHouston George Bush Intcntl
Dec 3
IAH4:25 pmHouston George Bush Intcntl
5h 44m
1 stop
PWM11:09 pmPortland
$305
Find similar
United Airlines
Dec 1
PWM4:52 pmPortland
8h 07m
1 stop
IAH11:59 pmHouston George Bush Intcntl
Dec 3
IAH1:34 pmHouston George Bush Intcntl
8h 35m
1 stop
PWM11:09 pmPortland
$395
Find similar

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
Feb 26
PWM10:57 amPortland
6h 55m
1 stop
IAH4:52 pmHouston George Bush Intcntl
Mar 3
IAH5:23 pmHouston George Bush Intcntl
5h 26m
1 stop
PWM11:49 pmPortland
$255
Find similar
American Airlines
Feb 26
PWM10:57 amPortland
6h 55m
1 stop
IAH4:52 pmHouston George Bush Intcntl
Mar 3
IAH12:22 pmHouston George Bush Intcntl
10h 27m
2 stops
PWM11:49 pmPortland
$260
Find similar
American Airlines
Jan 9
PWM5:20 amPortland
9h 31m
2 stops
IAH1:51 pmHouston George Bush Intcntl
Jan 12
IAH10:20 amHouston George Bush Intcntl
5h 17m
1 stop
PWM4:37 pmPortland
$264
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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 November 17, 2025.
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

Fri 1/16

9:47 am-6:58 pm

1 stop10h 11m

Houston George Bush Intcntl

Fri 1/23

8:28 pm-10:22 am

1 stop12h 54m

$237

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 1/16

5:06 pm-1:20 pm

2 stops45h 14m

Houston George Bush Intcntl

Fri 1/23

8:28 pm-10:22 am

1 stop12h 54m

$248

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 12/16

4:53 pm-10:23 pm

1 stop6h 30m

Houston George Bush Intcntl

Tue 1/13

1:55 pm-10:27 pm

1 stop7h 32m

$251

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 2/26

10:57 am-4:52 pm

1 stop6h 55m

Houston George Bush Intcntl

Tue 3/3

5:23 pm-11:49 pm

1 stop5h 26m

$255

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 12/2

4:43 pm-11:59 pm

2 stops8h 16m

Houston George Bush Intcntl

Sat 12/6

5:20 am-12:13 pm

1 stop5h 53m

$256

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 5/2

6:00 am-12:16 pm

1 stop7h 16m

Houston George Bush Intcntl

Tue 5/5

5:25 am-11:55 am

1 stop5h 30m

$259

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 2/26

10:57 am-4:52 pm

1 stop6h 55m

Houston George Bush Intcntl

Tue 3/3

12:22 pm-11:49 pm

2 stops10h 27m

$260

PortlandHouston

PWM - IAH

PWMIAH

Portland

Tue 12/2

4:43 pm-11:59 pm

2 stops8h 16m

Houston George Bush Intcntl

Sat 12/6

7:01 am-4:00 pm

2 stops7h 59m

$261

PortlandHouston

PWM - IAH

PWMIAH

Portland

Fri 1/9

5:20 am-1:51 pm

2 stops9h 31m

Houston George Bush Intcntl

Mon 1/12

10:20 am-4:37 pm

1 stop5h 17m

$264

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 12/10

7:02 am-5:36 pm

2 stops11h 34m

Houston George Bush Intcntl

Mon 12/15

12:11 pm-11:37 pm

2 stops10h 26m

$265

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 December is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Portland, Maine, with most prices found around $219. If you are unable to visit Houston George Bush Intcntl Airport during the month of December, then departing from Portland, Maine during the month July is also very affordable. Most momondo users find prices during this month for around $282.

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from Portland, Maine to Houston George Bush Intcntl Airport is on a Tuesday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Tuesday will often find tickets for as low as $309. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Monday is $567.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest Portland, Maine to Houston George Bush Intcntl Airport flights are usually those with departure times in the evening. Our users have found flights to Houston George Bush Intcntl Airport in the evening for as low as $396. Try not to purchase tickets in the morning because they tend to be around $428. Of course, these prices can vary depending on the time of year and what airport you fly to.

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?

You could potentially save up to 10% 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 November 2025, prices for Portland, Maine to Houston George Bush Intcntl Airport flights are approximately 56% 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

Direct flights

None
There are no direct flights from Portland, Maine to Houston George Bush Intcntl Airport. There are no popular flight routes from Portland, Maine to Houston George Bush Intcntl Airport.
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  • 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 5h 52m.

  • 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
FrontierPriceFrom $218Free CancellationRating
5.8
3,103 reviews
Search Frontier flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $295Free CancellationRating
7.4
9,014 reviews
Search United Airlines flights

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
The Woodlands
Katy
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.

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