Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland, Maine to Houston from $123

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.
American Airlines Logo
12:15 pm - 8:29 pmPWM  Portland-IAH Houston George Bush Intcntl
9h 14m1 stop Chicago O'Hare Intl
American Airlines Logo
7:07 am - 2:49 pmIAH  Houston George Bush Intcntl-PWM Portland
6h 42m1 stop Washington, D.C. Reagan-National
$259American Airlines
Tue, Dec 8 - Tue, Jan 5
Delta Logo
12:50 pm - 6:28 pmPWM  Portland-IAH Houston George Bush Intcntl
6h 38m1 stop Detroit Metropolitan Wayne County
Delta Logo
5:25 am - 11:53 amIAH  Houston George Bush Intcntl-PWM Portland
5h 28m1 stop Detroit Metropolitan Wayne County
$259Delta
Sat, Jan 30 - Sat, Feb 6
United Airlines Logo
5:08 pm - 10:53 pmPWM  Portland-IAH Houston George Bush Intcntl
6h 45m1 stop Chicago O'Hare Intl
United Airlines Logo
7:20 am - 2:16 pmIAH  Houston George Bush Intcntl-PWM Portland
5h 56m1 stop Chicago O'Hare Intl
$259United Airlines
Mon, Nov 9 - Wed, Nov 11
Delta Logo
2:05 pm - 8:11 pmPWM  Portland-IAH Houston George Bush Intcntl
7h 06m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:27 pm - 11:31 pmIAH  Houston George Bush Intcntl-PWM Portland
6h 04m1 stop Atlanta Hartsfield-Jackson
$259Delta
Tue, Nov 17 - Mon, Nov 23
Delta Logo
6:12 am - 1:38 pmPWM  Portland-IAH Houston George Bush Intcntl
8h 26m1 stop New York LaGuardia
Delta Logo
4:29 pm - 11:33 pmIAH  Houston George Bush Intcntl-PWM Portland
6h 04m1 stop Atlanta Hartsfield-Jackson
$259Delta
Tue, Dec 1 - Tue, Dec 15
American Airlines Logo
6:13 am - 3:33 pmPWM  Portland-IAH Houston George Bush Intcntl
10h 20m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
American Airlines Logo
11:41 am - 9:29 pmIAH  Houston George Bush Intcntl-PWM Portland
8h 48m2 stops Dallas/Fort Worth Charlotte Douglas
$269American Airlines
Sat, Jan 30 - Sat, Feb 6
American Airlines Logo
5:36 am - 2:08 pmPWM  Portland-IAH Houston George Bush Intcntl
9h 32m1 stop Charlotte Douglas
American Airlines Logo
6:16 am - 3:32 pmIAH  Houston George Bush Intcntl-PWM Portland
8h 16m1 stop Washington, D.C. Reagan-National
$286American Airlines
Thu, Dec 3 - Mon, Dec 7
United Airlines Logo
5:08 pm - 10:53 pmPWM  Portland-IAH Houston George Bush Intcntl
6h 45m1 stop Chicago O'Hare Intl
United Airlines Logo
2:40 pm - 11:21 pmIAH  Houston George Bush Intcntl-PWM Portland
7h 41m1 stop Newark
$329United Airlines
Mon, Nov 9 - Tue, Nov 24
Multiple Airlines Logo
5:09 pm - 7:40 pmPWM  Portland-IAH Houston George Bush Intcntl
27h 31m1 stop Raleigh-Durham
Multiple Airlines Logo
8:21 pm - 9:08 amIAH  Houston George Bush Intcntl-PWM Portland
35h 47m2 stops Atlanta Hartsfield-Jackson Orlando
$342Multiple Airlines
Sat, Nov 7 - Wed, Nov 11
Multiple Airlines Logo
9:48 am - 12:25 amPWM  Portland-IAH Houston George Bush Intcntl
15h 37m1 stop Orlando
Multiple Airlines Logo
9:44 pm - 9:08 amIAH  Houston George Bush Intcntl-PWM Portland
34h 24m2 stops Las Vegas Harry Reid Intl Orlando
$568Multiple Airlines
Fri, Nov 27 - Mon, Nov 30

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
Nov 9
PWM5:08 pmPortland
6h 45m
1 stop
IAH10:53 pmHouston George Bush Intcntl
Nov 24
IAH2:40 pmHouston George Bush Intcntl
7h 41m
1 stop
PWM11:21 pmPortland
$329
United Airlines
Nov 12
PWM5:08 pmPortland
8h 22m
1 stop
IAH12:30 amHouston George Bush Intcntl
Nov 16
IAH5:00 amHouston George Bush Intcntl
8h 16m
1 stop
PWM2:16 pmPortland
$379
United Airlines
Dec 16
PWM6:00 amPortland
7h 17m
1 stop
IAH12:17 pmHouston George Bush Intcntl
Dec 16
IAH4:45 pmHouston George Bush Intcntl
6h 13m
1 stop
PWM11:58 pmPortland
$422

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
Dec 3
PWM5:36 amPortland
9h 32m
1 stop
IAH2:08 pmHouston George Bush Intcntl
Dec 7
IAH6:16 amHouston George Bush Intcntl
8h 16m
1 stop
PWM3:32 pmPortland
$286
American Airlines
Mar 31
PWM7:14 amPortland
8h 49m
1 stop
IAH3:03 pmHouston George Bush Intcntl
Apr 14
IAH1:14 pmHouston George Bush Intcntl
9h 13m
1 stop
PWM11:27 pmPortland
$399
American Airlines
Jan 14
PWM7:00 amPortland
7h 00m
1 stop
IAH1:00 pmHouston George Bush Intcntl
Jan 18
IAH1:40 pmHouston George Bush Intcntl
8h 08m
1 stop
PWM10:48 pmPortland
$408

momondo Fare Finder

 
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 Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Tue 12/8

12:15 pm-8:29 pm

1 stop9h 14m

Houston George Bush Intcntl

Tue 1/5

7:07 am-2:49 pm

1 stop6h 42m

$259
Quickest round-trip

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Sat 1/30

12:50 pm-6:28 pm

1 stop6h 38m

Houston George Bush Intcntl

Sat 2/6

5:25 am-11:53 am

1 stop5h 28m

$259

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Mon 11/9

5:08 pm-10:53 pm

1 stop6h 45m

Houston George Bush Intcntl

Wed 11/11

7:20 am-2:16 pm

1 stop5h 56m

$259

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Tue 11/17

2:05 pm-8:11 pm

1 stop7h 06m

Houston George Bush Intcntl

Mon 11/23

4:27 pm-11:31 pm

1 stop6h 04m

$259

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Tue 12/1

6:12 am-1:38 pm

1 stop8h 26m

Houston George Bush Intcntl

Tue 12/15

4:29 pm-11:33 pm

1 stop6h 04m

$259

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Sat 1/30

6:13 am-3:33 pm

2 stops10h 20m

Houston George Bush Intcntl

Sat 2/6

11:41 am-9:29 pm

2 stops8h 48m

$269

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Thu 12/3

5:36 am-2:08 pm

1 stop9h 32m

Houston George Bush Intcntl

Mon 12/7

6:16 am-3:32 pm

1 stop8h 16m

$286

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Mon 11/9

5:08 pm-10:53 pm

1 stop6h 45m

Houston George Bush Intcntl

Tue 11/24

2:40 pm-11:21 pm

1 stop7h 41m

$329

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Sat 11/7

5:09 pm-7:40 pm

1 stop27h 31m

Houston George Bush Intcntl

Wed 11/11

8:21 pm-9:08 am

2 stops35h 47m

$342

PortlandHouston

PWM Portland - IAH Houston George Bush Intcntl

PWMIAH

Portland

Fri 11/27

9:48 am-12:25 am

1 stop15h 37m

Houston George Bush Intcntl

Mon 11/30

9:44 pm-9:08 am

2 stops34h 24m

$568

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Prices are currently low for flights on this route.

Typical prices usually range from $343 to $402.
The lowest price recently found on this route was $259.

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

The month of October is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Portland, Maine, with most prices found around $368. If you are unable to visit Houston George Bush Intcntl Airport during the month of October, then departing from Portland, Maine during the month March is also very affordable. Most momondo users find prices during this month for around $398.

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 29% 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 October 2026, prices for Portland, Maine to Houston George Bush Intcntl Airport flights are approximately 69% 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

Best Price Found

$123

Fastest flight time

6h 14m

Direct flights

None
The best one-way flight to Houston George Bush Intcntl Airport from Portland, Maine in the past 72 hours is $123. The best round-trip flight deal from Portland, Maine to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $259.
The fastest flight from Portland, Maine to Houston George Bush Intcntl Airport takes 6h 14m
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.
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 14m.

  • 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 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 $276Free CancellationRating
7.0
12,186 reviews
Search American Airlines flights
DeltaPriceFrom $284Free CancellationRating
7.8
8,661 reviews
Search Delta flights
United AirlinesPriceFrom $361Free CancellationRating
7.3
10,404 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
Montgomery
Conroe
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.

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/21
Sat 11/28
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Houston