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Cheap flights from Portland, Maine to Houston from $160

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 7/12. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:48 am - 9:04 pm
PWM
-
IAH
12h 16m
1 stop
Multiple Airlines Logo
5:09 pm - 9:08 am
IAH
-
PWM
14h 59m
1 stop
$339Multiple Airlines
Wed, Oct 14 - Tue, Oct 20
Multiple Airlines Logo
6:31 pm - 12:40 pm
PWM
-
IAH
19h 09m
2 stops
Multiple Airlines Logo
12:21 pm - 9:08 am
IAH
-
PWM
19h 47m
1 stop
$343Multiple Airlines
Wed, Oct 14 - Tue, Oct 20
Multiple Airlines Logo
11:07 am - 6:25 pm
PWM
-
IAH
8h 18m
1 stop
Multiple Airlines Logo
8:29 am - 9:19 pm
IAH
-
PWM
11h 50m
2 stops
$348Multiple Airlines
Wed, Aug 5 - Tue, Aug 18
American Airlines Logo
5:19 pm - 10:51 pm
PWM
-
IAH
6h 32m
1 stop
American Airlines Logo
7:21 am - 4:39 pm
IAH
-
PWM
8h 18m
1 stop
$349American Airlines
Thu, Nov 12 - Mon, Nov 16
Delta Logo
1:35 pm - 6:59 pm
PWM
-
IAH
6h 24m
1 stop
Delta Logo
11:50 am - 11:06 pm
IAH
-
PWM
10h 16m
2 stops
$354Delta
Thu, Nov 12 - Mon, Nov 16
Delta Logo
12:50 pm - 11:58 pm
PWM
-
IAH
12h 08m
2 stops
Delta Logo
11:50 am - 11:06 pm
IAH
-
PWM
10h 16m
2 stops
$359Delta
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
5:18 pm - 10:14 pm
PWM
-
IAH
5h 56m
1 stop
American Airlines Logo
5:00 pm - 12:02 am
IAH
-
PWM
6h 02m
1 stop
$383American Airlines
Thu, Jul 9 - Sun, Jul 12
Delta Logo
2:05 pm - 9:25 pm
PWM
-
IAH
8h 20m
1 stop
Delta Logo
5:20 am - 11:55 am
IAH
-
PWM
5h 35m
1 stop
$384Delta
Sat, May 30 - Sat, Jun 6
Delta Logo
6:57 pm - 11:59 pm
PWM
-
IAH
6h 02m
1 stop
Delta Logo
5:42 am - 2:19 pm
IAH
-
PWM
7h 37m
2 stops
$389Delta
Thu, Jul 9 - Sun, Jul 12
American Airlines Logo
6:00 am - 1:17 pm
PWM
-
IAH
8h 17m
2 stops
American Airlines Logo
5:01 am - 2:24 pm
IAH
-
PWM
8h 23m
2 stops
$393American Airlines
Wed, Jun 3 - Sun, Jun 7

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
Nov 12
PWM5:19 pmPortland
6h 32m
1 stop
IAH10:51 pmHouston George Bush Intcntl
Nov 16
IAH7:21 amHouston George Bush Intcntl
8h 18m
1 stop
PWM4:39 pmPortland
$349
American Airlines
Jul 9
PWM5:18 pmPortland
5h 56m
1 stop
IAH10:14 pmHouston George Bush Intcntl
Jul 12
IAH5:00 pmHouston George Bush Intcntl
6h 02m
1 stop
PWM12:02 amPortland
$383
American Airlines
May 30
PWM2:24 pmPortland
9h 04m
2 stops
IAH10:28 pmHouston George Bush Intcntl
Jun 6
IAH3:06 pmHouston George Bush Intcntl
6h 37m
1 stop
PWM10:43 pmPortland
$389

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
PWM1:35 pmPortland
6h 24m
1 stop
IAH6:59 pmHouston George Bush Intcntl
Nov 16
IAH11:50 amHouston George Bush Intcntl
10h 16m
2 stops
PWM11:06 pmPortland
$354
Delta
Nov 12
PWM12:50 pmPortland
12h 08m
2 stops
IAH11:58 pmHouston George Bush Intcntl
Nov 16
IAH11:50 amHouston George Bush Intcntl
10h 16m
2 stops
PWM11:06 pmPortland
$359
Delta
May 30
PWM2:05 pmPortland
8h 20m
1 stop
IAH9:25 pmHouston George Bush Intcntl
Jun 6
IAH5:20 amHouston George Bush Intcntl
5h 35m
1 stop
PWM11:55 amPortland
$384

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 May 18, 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

Wed 10/14

9:48 am-9:04 pm

1 stop12h 16m

Houston George Bush Intcntl

Tue 10/20

5:09 pm-9:08 am

1 stop14h 59m

$339

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 10/14

6:31 pm-12:40 pm

2 stops19h 09m

Houston George Bush Intcntl

Tue 10/20

12:21 pm-9:08 am

1 stop19h 47m

$343

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 8/5

11:07 am-6:25 pm

1 stop8h 18m

Houston George Bush Intcntl

Tue 8/18

8:29 am-9:19 pm

2 stops11h 50m

$348

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 11/12

5:19 pm-10:51 pm

1 stop6h 32m

Houston George Bush Intcntl

Mon 11/16

7:21 am-4:39 pm

1 stop8h 18m

$349

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 11/12

1:35 pm-6:59 pm

1 stop6h 24m

Houston George Bush Intcntl

Mon 11/16

11:50 am-11:06 pm

2 stops10h 16m

$354

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 11/12

12:50 pm-11:58 pm

2 stops12h 08m

Houston George Bush Intcntl

Mon 11/16

11:50 am-11:06 pm

2 stops10h 16m

$359
Quickest round-trip

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 7/9

5:18 pm-10:14 pm

1 stop5h 56m

Houston George Bush Intcntl

Sun 7/12

5:00 pm-12:02 am

1 stop6h 02m

$383

PortlandHouston

PWM - IAH

PWMIAH

Portland

Sat 5/30

2:05 pm-9:25 pm

1 stop8h 20m

Houston George Bush Intcntl

Sat 6/6

5:20 am-11:55 am

1 stop5h 35m

$384

PortlandHouston

PWM - IAH

PWMIAH

Portland

Thu 7/9

6:57 pm-11:59 pm

1 stop6h 02m

Houston George Bush Intcntl

Sun 7/12

5:42 am-2:19 pm

2 stops7h 37m

$389

PortlandHouston

PWM - IAH

PWMIAH

Portland

Wed 6/3

6:00 am-1:17 pm

2 stops8h 17m

Houston George Bush Intcntl

Sun 6/7

5:01 am-2:24 pm

2 stops8h 23m

$393

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

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 $285. If you are unable to visit Houston George Bush Intcntl Airport during the month of July, then departing from Portland, Maine during the month October is also very affordable. Most momondo users find prices during this month for around $318.

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

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 May 2026, prices for Portland, Maine to Houston George Bush Intcntl Airport flights are approximately 10% 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

4h 53m

Direct flights

Sun
The fastest flight from Portland, Maine to Houston George Bush Intcntl Airport takes 4h 53m
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 4h 53m.

  • 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
11,648 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,447 reviews
Search Delta flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
9,737 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
Conroe
Humble
Spring
Cypress
Montgomery
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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