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$75+ Cheap flights from Philadelphia (PHL) to Houston

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — HOU
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Houston are usually found in September or August, booked 82 days in advance, depart on a Tuesday or Saturday and return on a Saturday

Cheap flight deals from Philadelphia to Houston

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Houston (HO1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$144
(Booking.com)

One-way from

$75
(Kiwi.com)

Popular in

April

Cheapest in

September

Average price

$235
From Philadelphia to Houston
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One-way flight from Philadelphia to Houston
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Highest demand for flights based on searches. 18% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Philadelphia to Houston

Cheapest flights from Philadelphia to Houston
Explore the most affordable flight options available from Philadelphia to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Booking.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:15 amPHL - IAH
1 stop12h 46mFrontier
Sun 9/2111:44 amIAH - PHL
1 stop12h 08mFrontier
Deal found 8/14$144
This Booking.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:15 amPHL - IAH
1 stop12h 46mFrontier
Sun 9/285:04 pmIAH - PHL
1 stop16h 15mFrontier
Deal found 8/14$146
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/292:07 pmPHL - IAH
1 stop9h 23mMultiple Airlines
Thu 10/165:42 pmIAH - PHL
1 stop6h 12mMultiple Airlines
Deal found 8/14$148
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/312:06 pmPHL - IAH
1 stop7h 20mMultiple Airlines
Sun 9/75:47 pmIAH - PHL
1 stop6h 10mMultiple Airlines
Deal found 8/14$149
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:00 pmPHL - IAH
1 stop7h 12mSpirit Airlines
Sun 9/148:26 pmIAH - PHL
1 stop23h 29mSpirit Airlines
Deal found 8/12$150
This Cheapflightsfares deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1311:31 amPHL - IAH
1 stop6h 12mFrontier
Fri 10/175:38 pmIAH - PHL
1 stop6h 01mFrontier
Deal found 8/14$151
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/285:01 amPHL - IAH
1 stop12h 08mFrontier
Thu 10/165:42 pmIAH - PHL
1 stop6h 12mFrontier
Deal found 8/14$153
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:00 amPHL - IAH
2 stops18h 30mSpirit Airlines
Wed 9/177:31 pmIAH - PHL
1 stop13h 15mSpirit Airlines
Deal found 8/11$154
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:20 amPHL - IAH
1 stop7h 51mMultiple Airlines
Tue 11/118:00 amIAH - PHL
1 stop6h 50mMultiple Airlines
Deal found 8/14$155
This Cheapflightsfares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:07 pmPHL - IAH
1 stop9h 23mSpirit Airlines
Tue 9/97:31 pmIAH - PHL
1 stop13h 15mSpirit Airlines
Deal found 8/12$156
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amPHL - IAH
1 stop12h 14mFrontier
Mon 10/135:42 pmIAH - PHL
1 stop6h 12mFrontier
Deal found 8/14$157
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/222:06 pmPHL - IAH
1 stop7h 20mMultiple Airlines
Mon 10/135:42 pmIAH - PHL
1 stop6h 12mMultiple Airlines
Deal found 8/14$159

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Houston 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, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Philadelphia to Houston that are best for you.

Fly from

Philadelphia

Fly to

Houston

Route

Depart

Return

Price

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Sat 9/20

5:00 am-10:24 am

1 stop6h 24m

Houston George Bush Intcntl

Sat 9/27

5:30 am-1:02 pm

1 stop6h 32m

$144

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Mon 9/29

2:07 pm-10:30 pm

1 stop9h 23m

Houston George Bush Intcntl

Thu 10/16

5:42 pm-12:54 am

1 stop6h 12m

$148

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Mon 9/29

2:07 pm-10:30 pm

1 stop9h 23m

Houston George Bush Intcntl

Mon 10/13

5:42 pm-12:54 am

1 stop6h 12m

$148

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Sun 8/31

2:06 pm-8:26 pm

1 stop7h 20m

Houston George Bush Intcntl

Sun 9/7

5:47 pm-12:57 am

1 stop6h 10m

$149

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Fri 10/24

5:05 am-10:47 am

1 stop6h 42m

Houston George Bush Intcntl

Mon 10/27

5:42 pm-12:54 am

1 stop6h 12m

$150

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Wed 9/17

12:00 pm-10:42 pm

1 stop11h 42m

Houston George Bush Intcntl

Sun 9/21

8:26 pm-8:55 pm

1 stop23h 29m

$150

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Wed 9/10

12:00 pm-6:12 pm

1 stop7h 12m

Houston George Bush Intcntl

Sun 9/14

8:26 pm-8:55 pm

1 stop23h 29m

$150

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Wed 10/22

10:22 am-4:47 pm

1 stop7h 25m

Houston George Bush Intcntl

Mon 10/27

12:42 pm-10:31 pm

1 stop8h 49m

$153

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Mon 11/3

1:02 pm-10:08 pm

1 stop10h 06m

Houston George Bush Intcntl

Tue 11/11

10:28 am-5:40 pm

1 stop6h 12m

$153

PhiladelphiaHouston

PHL - IAH

PHLIAH

Philadelphia

Sun 11/2

5:00 am-9:48 am

1 stop5h 48m

Houston George Bush Intcntl

Thu 11/13

5:56 pm-12:54 am

1 stop5h 58m

$153

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 35 results
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The best insider tips for Philadelphia to Houston flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to Houston trip
Airlines
United Airlines

United's Economy Plus offers extra legroom, enhancing comfort on domestic flights.


United's MileagePlus allows pooling miles, beneficial for family travel.

Read more about United Airlinesby Harriet Baskas
Spirit Airlines

Spirit's Big Front Seats offer 11 inches more legroom, ideal for added comfort.


Spirit's self-service bag drop saves time at the airport, enhancing efficiency.

Read more about Spirit Airlinesby Daniel Scheffler
Airports
PHL

For quick access to Center City, use SEPTA regional rail from PHL. Stations are near Terminals A, B, C/D, and E/F.

Read more about PHLby Mark Chesnut
IAH

For a quick ride to downtown Houston, take an Uber or Lyft from IAH. It's about a 25-minute drive.

Read more about IAHby Evie Carrick
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more

Best time to book a flight from Philadelphia to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Houston

How far ahead should I book a flight from Philadelphia to Houston?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Houston. Price data was last updated on August 8, 2025.

The best time to book flights from Philadelphia to Houston is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Philadelphia to Houston?

Currently, September is the cheapest month in which you can book a flight from Philadelphia to Houston (average of $230). Flying from Philadelphia to Houston in March is currently the most expensive (average of $331). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to HOU?

Find hourly flight availability from Philadelphia to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

One of the essential ways to save on airfare from Philadelphia to Houston is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 39% on airfare.

What is the cheapest day to fly from Philadelphia to Houston?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Houston. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Houston flight should consider departing on Monday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Philadelphia to Houston?

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated August 14, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Philadelphia to Houston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,046 reviews
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,217 reviews
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Philadelphia to Houston?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to Houston. 6 airlines have flights from Philadelphia to Houston on a regular basis. Booking flights from Philadelphia to Houston should not be difficult; the airport handles an average of 0 outbound flights to Houston per day.

  • What are the cheapest airlines flying from Philadelphia to Houston round-trip?

    Flying on Spirit Airlines is currently your cheapest option to Houston, with prices starting at $59. Additional round-trip tickets that might be worth considering are offered by Frontier and Southwest, with the lowest prices starting at $110 and $171, respectively. These flights start at 80% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to Houston one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $75. Users have also found prices from $77 and $105 on Frontier and Southwest, respectively.

  • Can I find deals for flights from Philadelphia to Houston that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Houston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Houston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Houston.

  • Can I find deals for business class flights from Philadelphia to Houston?

    Yes. Cheapflights offers flight deals from Philadelphia to Houston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Houston?

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to Houston (average of $230). Flying from Philadelphia to Houston in March is currently the most expensive (average of $331). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Philadelphia to Houston

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Dallas/Fort Worth flights
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Top 6 airlines flying from Philadelphia to Houston

Discover the top 6 airlines that operate flights from Philadelphia to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$59Average$189FlexibilityNo cancel feeOn-time65%
FrontierCheapest$110Average$186FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$171Average$331FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$174Average$436FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$196Average$408FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$309FlexibilityNo cancel feeOn-timeN/A

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