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Cheap flights from Portland, Maine to Houston from $124

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 9/24. 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
11:40 am - 5:24 pmPWM  Portland-IAH Houston George Bush Intcntl
6h 44m1 stop New York LaGuardia
Delta Logo
4:28 pm - 11:33 pmIAH  Houston George Bush Intcntl-PWM Portland
6h 05m1 stop Atlanta Hartsfield-Jackson
$247Delta
Thu, Nov 12 - Mon, Nov 16
Delta Logo
1:59 pm - 9:19 pmPWM  Portland-IAH Houston George Bush Intcntl
8h 20m1 stop New York LaGuardia
Delta Logo
2:00 pm - 11:17 pmIAH  Houston George Bush Intcntl-PWM Portland
8h 17m1 stop New York LaGuardia
$247Delta
Thu, Sep 10 - Wed, Sep 16
American Airlines Logo
4:26 pm - 10:29 pmPWM  Portland-IAH Houston George Bush Intcntl
7h 03m1 stop Charlotte Douglas
American Airlines Logo
2:41 pm - 11:40 pmIAH  Houston George Bush Intcntl-PWM Portland
7h 59m1 stop Chicago O'Hare Intl
$247American Airlines
Sat, Oct 24 - Thu, Oct 29
American Airlines Logo
4:30 pm - 10:29 pmPWM  Portland-IAH Houston George Bush Intcntl
6h 59m1 stop Charlotte Douglas
American Airlines Logo
7:34 am - 5:04 pmIAH  Houston George Bush Intcntl-PWM Portland
8h 30m1 stop Chicago O'Hare Intl
$247American Airlines
Wed, Oct 7 - Wed, Oct 14
American Airlines Logo
5:30 am - 11:16 amPWM  Portland-IAH Houston George Bush Intcntl
6h 46m1 stop Philadelphia
American Airlines Logo
4:24 pm - 11:36 pmIAH  Houston George Bush Intcntl-PWM Portland
6h 12m1 stop Philadelphia
$247American Airlines
Sat, Sep 12 - Mon, Sep 14
Delta Logo
1:59 pm - 9:19 pmPWM  Portland-IAH Houston George Bush Intcntl
8h 20m1 stop New York LaGuardia
Delta Logo
11:26 am - 11:17 pmIAH  Houston George Bush Intcntl-PWM Portland
10h 51m2 stops Detroit Metropolitan Wayne County New York LaGuardia
$252Delta
Thu, Sep 10 - Wed, Sep 16
United Airlines Logo
3:26 pm - 6:54 pmPWM  Portland-IAH Houston George Bush Intcntl
4h 28mnonstop
United Airlines Logo
1:54 pm - 11:21 pmIAH  Houston George Bush Intcntl-PWM Portland
8h 27m1 stop Newark
$264United Airlines
Sat, Oct 24 - Thu, Oct 29
Multiple Airlines Logo
6:00 am - 7:17 amPWM  Portland-IAH Houston George Bush Intcntl
26h 17m2 stops Cincinnati Cinci./N. Kentucky Atlanta Hartsfield-Jackson
Multiple Airlines Logo
8:25 pm - 9:08 amIAH  Houston George Bush Intcntl-PWM Portland
11h 43m1 stop Orlando
$309Multiple Airlines
Fri, Sep 11 - Sun, Sep 13
United Airlines Logo
5:30 am - 11:10 amPWM  Portland-IAH Houston George Bush Intcntl
6h 40m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
1:54 pm - 11:21 pmIAH  Houston George Bush Intcntl-PWM Portland
8h 27m1 stop Newark
$342United Airlines
Tue, Nov 3 - Wed, Nov 4
Multiple Airlines Logo
7:00 am - 7:26 pmPWM  Portland-IAH Houston George Bush Intcntl
37h 26m2 stops Akron/Canton Raleigh-Durham
Multiple Airlines Logo
8:25 pm - 9:08 amIAH  Houston George Bush Intcntl-PWM Portland
11h 43m1 stop Orlando
$347Multiple Airlines
Thu, Sep 10 - Sun, Sep 13

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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
Nov 12
PWM11:40 amPortland
6h 44m
1 stop
IAH5:24 pmHouston George Bush Intcntl
Nov 16
IAH11:00 amHouston George Bush Intcntl
11h 21m
2 stops
PWM11:21 pmPortland
$252
Delta
Nov 12
PWM11:40 amPortland
11h 31m
2 stops
IAH10:11 pmHouston George Bush Intcntl
Nov 16
IAH11:00 amHouston George Bush Intcntl
11h 21m
2 stops
PWM11:21 pmPortland
$257
Delta
Nov 12
PWM11:40 amPortland
6h 44m
1 stop
IAH5:24 pmHouston George Bush Intcntl
Nov 16
IAH4:28 pmHouston George Bush Intcntl
6h 05m
1 stop
PWM11:33 pmPortland
$303

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
Sep 5
PWM12:24 pmPortland
7h 25m
1 stop
IAH6:49 pmHouston George Bush Intcntl
Sep 7
IAH11:28 amHouston George Bush Intcntl
6h 24m
1 stop
PWM6:52 pmPortland
$247
American Airlines
Oct 1
PWM4:41 pmPortland
8h 17m
2 stops
IAH11:58 pmHouston George Bush Intcntl
Oct 3
IAH12:01 pmHouston George Bush Intcntl
6h 37m
1 stop
PWM7:38 pmPortland
$273
American Airlines
Sep 5
PWM6:00 amPortland
8h 19m
2 stops
IAH1:19 pmHouston George Bush Intcntl
Sep 7
IAH5:00 amHouston George Bush Intcntl
8h 21m
2 stops
PWM2:21 pmPortland
$278

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 August 14, 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
Quickest round-trip

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Thu 11/12

11:40 am-5:24 pm

1 stop6h 44m

Houston George Bush Intcntl

Mon 11/16

4:28 pm-11:33 pm

1 stop6h 05m

$247

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Thu 9/10

1:59 pm-9:19 pm

1 stop8h 20m

Houston George Bush Intcntl

Wed 9/16

2:00 pm-11:17 pm

1 stop8h 17m

$247

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Sat 10/24

4:26 pm-10:29 pm

1 stop7h 03m

Houston George Bush Intcntl

Thu 10/29

2:41 pm-11:40 pm

1 stop7h 59m

$247

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Wed 10/7

4:30 pm-10:29 pm

1 stop6h 59m

Houston George Bush Intcntl

Wed 10/14

7:34 am-5:04 pm

1 stop8h 30m

$247

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Sat 9/12

5:30 am-11:16 am

1 stop6h 46m

Houston George Bush Intcntl

Mon 9/14

4:24 pm-11:36 pm

1 stop6h 12m

$247

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Thu 9/10

1:59 pm-9:19 pm

1 stop8h 20m

Houston George Bush Intcntl

Wed 9/16

11:26 am-11:17 pm

2 stops10h 51m

$252

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Sat 10/24

3:26 pm-6:54 pm

Nonstop4h 28m

Houston George Bush Intcntl

Thu 10/29

1:54 pm-11:21 pm

1 stop8h 27m

$264

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Fri 9/11

6:00 am-7:17 am

2 stops26h 17m

Houston George Bush Intcntl

Sun 9/13

8:25 pm-9:08 am

1 stop11h 43m

$309

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Tue 11/3

5:30 am-11:10 am

1 stop6h 40m

Houston George Bush Intcntl

Wed 11/4

1:54 pm-11:21 pm

1 stop8h 27m

$342

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Thu 9/10

7:00 am-7:26 pm

2 stops37h 26m

Houston George Bush Intcntl

Sun 9/13

8:25 pm-9:08 am

1 stop11h 43m

$347

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 typical price of a round-trip flight between Portland, Maine and Houston George Bush Intcntl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $417 to $573.
The lowest price recently found on this route was $247.

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 35% 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 August 2026, prices for Portland, Maine to Houston George Bush Intcntl Airport flights are approximately 110% 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 36m

Direct flights

Sun
The fastest flight from Portland, Maine to Houston George Bush Intcntl Airport takes 6h 36m
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 36m.

  • 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
DeltaPriceFrom $260Free CancellationRating
7.8
8,502 reviews
Search Delta flights
American AirlinesPriceFrom $278Free CancellationRating
7.1
11,929 reviews
Search American Airlines flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
10,108 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
Montgomery
Spring
Cypress
Jersey Village
Livingston
Tomball

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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