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Cheap flights from Portland to Houston from $110

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 to Houston departing on 9/4. 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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Find the cheapest flights from Portland to Houston (PDX-IAH)

Cheap round-trip flights

Logo
8:36 pm - 5:46 amPDX-IAH
7h 10m1 stop
Logo
4:37 pm - 11:56 amIAH-PDX
21h 19m1 stop
$184
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Wed, Oct 29 - Wed, Nov 5
Frontier Logo
12:43 pm - 11:36 pmPDX-IAH
8h 53m1 stop
Frontier Logo
4:42 pm - 11:48 amIAH-PDX
21h 06m1 stop
$186Frontier
Find Deal
Thu, Oct 9 - Sat, Oct 11
Frontier Logo
10:34 am - 10:14 pmPDX-IAH
9h 40m2 stops
Frontier Logo
6:00 am - 11:56 amIAH-PDX
7h 56m1 stop
$190Frontier
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Fri, Oct 24 - Mon, Nov 3
United Airlines Logo
11:55 pm - 6:06 amPDX-IAH
4h 11mnonstop
United Airlines Logo
9:30 am - 11:56 amIAH-PDX
4h 26mnonstop
$192United Airlines
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Fri, Sep 26 - Sat, Sep 27
United Airlines Logo
1:45 pm - 10:11 pmPDX-IAH
6h 26m1 stop
United Airlines Logo
7:59 pm - 10:27 pmIAH-PDX
4h 28mnonstop
$203United Airlines
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Tue, Sep 23 - Sun, Sep 28
Delta Logo
12:45 am - 9:53 amPDX-IAH
7h 08m1 stop
Delta Logo
7:00 am - 11:45 amIAH-PDX
6h 45m1 stop
$217Delta
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Thu, Sep 18 - Mon, Sep 22
Spirit Airlines Logo
12:07 pm - 4:30 amPDX-IAH
14h 23m2 stops
Spirit Airlines Logo
9:32 am - 7:36 pmIAH-PDX
12h 04m1 stop
$221Spirit Airlines
Find Deal
Wed, Oct 1 - Tue, Oct 14
Delta Logo
12:45 am - 3:46 pmPDX-IAH
13h 01m2 stops
Delta Logo
4:34 pm - 10:39 pmIAH-PDX
8h 05m1 stop
$222Delta
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Fri, Sep 19 - Mon, Sep 22
Spirit Airlines Logo
12:07 pm - 5:50 amPDX-IAH
15h 43m1 stop
Spirit Airlines Logo
7:10 am - 11:11 amIAH-PDX
30h 01m2 stops
$226Spirit Airlines
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Wed, Sep 17 - Wed, Sep 24
Alaska Airlines Logo
1:24 pm - 12:06 amPDX-IAH
8h 42m1 stop
Alaska Airlines Logo
5:59 pm - 8:25 pmIAH-PDX
4h 26mnonstop
$247Alaska Airlines
Find Deal
Mon, Sep 22 - Mon, Sep 29

Frontier flights from Portland to Houston George Bush Intcntl Airport

Our best Frontier deals on Portland to Houston George Bush Intcntl Airport flight tickets
Frontier
Oct 9
PDX12:43 pmPortland
8h 53m
1 stop
IAH11:36 pmHouston George Bush Intcntl
Oct 11
IAH4:42 pmHouston George Bush Intcntl
21h 06m
1 stop
PDX11:48 amPortland
$186
Find similar
Frontier
Oct 24
PDX10:34 amPortland
9h 40m
2 stops
IAH10:14 pmHouston George Bush Intcntl
Nov 3
IAH6:00 amHouston George Bush Intcntl
7h 56m
1 stop
PDX11:56 amPortland
$190
Find similar
Frontier
Sep 10
PDX7:15 amPortland
11h 59m
1 stop
IAH9:14 pmHouston George Bush Intcntl
Sep 15
IAH12:52 pmHouston George Bush Intcntl
13h 20m
2 stops
PDX12:12 amPortland
$191
Find similar

United Airlines flights from Portland to Houston George Bush Intcntl Airport

Our best United Airlines deals on Portland to Houston George Bush Intcntl Airport flight tickets
United Airlines
Sep 26
PDX11:55 pmPortland
4h 11m
IAH6:06 amHouston George Bush Intcntl
Sep 27
IAH9:30 amHouston George Bush Intcntl
4h 26m
PDX11:56 amPortland
$192
Find similar
United Airlines
Sep 23
PDX1:45 pmPortland
6h 26m
1 stop
IAH10:11 pmHouston George Bush Intcntl
Sep 28
IAH7:59 pmHouston George Bush Intcntl
4h 28m
PDX10:27 pmPortland
$203
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momondo Fare Finder

 
Customize your flight search to find flights from Portland 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 20, 2025.
Use the filters below to find and compare flights from Portland to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandHouston

PDX - IAH

PDXIAH

Portland

Wed 10/29

8:36 pm-5:46 am

1 stop7h 10m

Houston George Bush Intcntl

Wed 11/5

4:37 pm-11:56 am

1 stop21h 19m

$184

PortlandHouston

PDX - IAH

PDXIAH

Portland

Thu 10/9

12:43 pm-11:36 pm

1 stop8h 53m

Houston George Bush Intcntl

Sat 10/11

4:42 pm-11:48 am

1 stop21h 06m

$186

PortlandHouston

PDX - IAH

PDXIAH

Portland

Fri 10/24

10:34 am-10:14 pm

2 stops9h 40m

Houston George Bush Intcntl

Mon 11/3

6:00 am-11:56 am

1 stop7h 56m

$190

PortlandHouston

PDX - IAH

PDXIAH

Portland

Fri 9/26

11:55 pm-6:06 am

Nonstop4h 11m

Houston George Bush Intcntl

Sat 9/27

9:30 am-11:56 am

Nonstop4h 26m

$192

PortlandHouston

PDX - IAH

PDXIAH

Portland

Tue 9/23

1:45 pm-10:11 pm

1 stop6h 26m

Houston George Bush Intcntl

Sun 9/28

7:59 pm-10:27 pm

Nonstop4h 28m

$203

PortlandHouston

PDX - IAH

PDXIAH

Portland

Thu 9/18

12:45 am-9:53 am

1 stop7h 08m

Houston George Bush Intcntl

Mon 9/22

7:00 am-11:45 am

1 stop6h 45m

$217

PortlandHouston

PDX - IAH

PDXIAH

Portland

Wed 10/1

12:07 pm-4:30 am

2 stops14h 23m

Houston George Bush Intcntl

Tue 10/14

9:32 am-7:36 pm

1 stop12h 04m

$221

PortlandHouston

PDX - IAH

PDXIAH

Portland

Fri 9/19

12:45 am-3:46 pm

2 stops13h 01m

Houston George Bush Intcntl

Mon 9/22

4:34 pm-10:39 pm

1 stop8h 05m

$222

PortlandHouston

PDX - IAH

PDXIAH

Portland

Wed 9/17

12:07 pm-5:50 am

1 stop15h 43m

Houston George Bush Intcntl

Wed 9/24

7:10 am-11:11 am

2 stops30h 01m

$226

PortlandHouston

PDX - IAH

PDXIAH

Portland

Mon 9/22

1:24 pm-12:06 am

1 stop8h 42m

Houston George Bush Intcntl

Mon 9/29

5:59 pm-8:25 pm

Nonstop4h 26m

$247

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 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, with most prices found around $316. If you are unable to visit Houston George Bush Intcntl Airport during the month of July, then departing from Portland during the month August is also very affordable. Most momondo users find prices during this month for around $332.

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

The cheapest day to depart from Portland to Houston George Bush Intcntl Airport is on a Thursday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Thursday will often find tickets for as low as $496. 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 $622.

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 to Houston George Bush Intcntl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Houston George Bush Intcntl Airport in the afternoon for as low as $339. Try not to purchase tickets in the evening because they tend to be around $561. 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

How far in advance should I book a flight to Houston George Bush Intcntl Airport?

You are more likely to see cheaper flights to Houston George Bush Intcntl Airport from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston George Bush Intcntl Airport for around $395 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston George Bush Intcntl Airport from Portland for as low as $331 on momondo.

What cabin class options are available on Portland to Houston George Bush Intcntl flights?

There are 4 cabin classes 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.

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

As of August 2025, prices for Portland to Houston George Bush Intcntl Airport flights are approximately 26% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Houston George Bush Intcntl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland 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 to Houston George Bush Intcntl Airport (PDX to IAH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Houston George Bush Intcntl Airport

Best Price Found

$184

Fastest flight time

4h 02m

Direct flights

Every day
The best one-way flight to Houston George Bush Intcntl Airport from Portland in the past 72 hours is $184. The best round-trip flight deal from Portland to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $335.
The fastest flight from Portland to Houston George Bush Intcntl Airport takes 4h 02m
Direct flights go from Portland to Houston George Bush Intcntl Airport every day.
Search flight deals

  • How far is Portland to Houston George Bush Intcntl by plane?

    Houston George Bush Intcntl is 1822.9 mi away from Portland. 4h 02m is a normal flight duration for this route.

  • 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 you'll need for your trip to Houston George Bush Intcntl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Houston George Bush Intcntl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Portland to Houston George Bush Intcntl Airport?

  • What is the most popular airline from Portland to Houston George Bush Intcntl Airport?

Best airlines flying from Portland to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Portland to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $76Free CancellationRating
6.3
8,039 reviews
Search Spirit Airlines flights
FrontierPriceFrom $130Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $138Free CancellationRating
7.8
2,668 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $177Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
7,982 reviews
Search Delta flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Portland to Houston George Bush Intcntl Airport

    Alaska Airlines is one of the most popular airlines flying from Portland to Houston George Bush Intcntl Airport, operating 1 flight/week on average for this route. A good Alaska Airlines flight deal for Portland to Houston George Bush Intcntl Airport starts from $177 round-trip, up to an average price of $393. Our users have rated Alaska Airlines at 8.0/10.

  • Hawaiian Airlines Flights From Portland to Houston George Bush Intcntl Airport

    Across 2,668 Hawaiian Airlines reviews on momondo, the average score is 7.8/10. Hawaiian Airlines flies from Portland to Houston George Bush Intcntl Airport about 1 time each week, with ticket deals ranging from $138 to $307. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Houston?

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

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Houston?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Houston. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to Houston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Houston from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Houston?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Houston from Portland.

I’m not ready to book a flight from Portland to Houston right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Houston now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Houston and let you know when they change.

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