$88 Find Cheap Flights from Philadelphia to Houston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Houston departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Houston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Houston.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Houston.
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Everything you should know

Cheapest round-trip
$188
Overall average: $356
Frontier
Sun 4/19Mon 4/20
PHL - IAH • Non-stop
Cheapest one-way
$88
Typical prices: $127-$263
Spirit Airlines
Mon 4/13
PHL - IAH • 1 stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
American's Main Cabin Extra includes early boarding.
Spirit's Big Front Seat offers extra width and legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $188 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines, United Airlines and Frontier. Average duration is 3h 55m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 26% compared to booking last minute.
Insights
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Flight Deals

Cheap Flights from Philadelphia to Houston (PHL-HOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Houston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Houston

Sun, Apr 19 - Mon, Apr 20
Frontier Logo
3:29 pm - 6:21 pm
PHL
-
IAH
3h 52mnonstop
Frontier Logo
7:16 pm - 11:39 pm
IAH
-
PHL
3h 23mnonstop
$188Frontier
Tue, Apr 28 - Mon, May 4
Frontier Logo
7:56 pm - 8:38 am
PHL
-
IAH
13h 42m
1 stop
Frontier Logo
4:02 pm - 3:42 pm
IAH
-
PHL
22h 40m
1 stop
$189Frontier
Tue, Apr 28 - Fri, May 1
Frontier Logo
7:56 pm - 8:38 am
PHL
-
IAH
13h 42m
1 stop
Frontier Logo
8:15 am - 11:07 pm
IAH
-
PHL
13h 52m
1 stop
$190Frontier
Tue, Apr 28 - Fri, May 1
Frontier Logo
7:56 pm - 8:38 am
PHL
-
IAH
13h 42m
1 stop
Frontier Logo
7:31 pm - 11:54 pm
IAH
-
PHL
3h 23mnonstop
$191Frontier
Sat, Apr 18 - Sun, May 3
Multiple Airlines Logo
5:45 am - 5:41 pm
PHL
-
IAH
12h 56m
1 stop
Multiple Airlines Logo
7:00 am - 8:31 am
IAH
-
PHL
24h 31m
1 stop
$192Multiple Airlines
Sun, May 3 - Thu, May 7
Multiple Airlines Logo
7:15 am - 10:07 am
PHL
-
IAH
3h 52mnonstop
Multiple Airlines Logo
5:45 am - 1:15 pm
IAH
-
PHL
6h 30m
1 stop
$193Multiple Airlines
Thu, May 7 - Sun, May 10
Spirit Airlines Logo
11:36 am - 10:27 pm
PHL
-
IAH
11h 51m
1 stop
Spirit Airlines Logo
5:45 am - 1:15 pm
IAH
-
PHL
6h 30m
1 stop
$194Spirit Airlines
Wed, Apr 22 - Tue, Apr 28
Delta Logo
5:19 pm - 11:07 pm
PHL
-
HOU
6h 48m
1 stop
Delta Logo
6:00 am - 2:36 pm
HOU
-
PHL
7h 36m
1 stop
$279Delta
Sat, Apr 25 - Mon, Apr 27
Southwest Logo
7:45 am - 4:55 pm
PHL
-
HOU
10h 10m
2 stops
Southwest Logo
3:10 pm - 11:45 pm
HOU
-
PHL
7h 35m
1 stop
$284Southwest
Mon, Apr 27 - Fri, May 1
Southwest Logo
12:45 pm - 9:10 pm
PHL
-
HOU
9h 25m
2 stops
Southwest Logo
2:20 pm - 10:45 pm
HOU
-
PHL
7h 25m
2 stops
$289Southwest
Booking Insights

KAYAK's insights & trends for Philadelphia to Houston flights

Get data-powered insights and trends into flights from Philadelphia to Houston to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Philadelphia to Houston flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Philadelphia to Houston costs $197 on the route between Philadelphia (PHL) and Houston George Bush Intcntl Airport (IAH). It is also the most popular route.

What’s the cheapest day of the week to fly from Philadelphia to Houston?

The average price of all round-trip flights from Philadelphia to Houston clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Houston on a Thursday and more expensive on a Sunday. On your return trip to Philadelphia, you should consider flying back on a Saturday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Houston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Houston is September, where tickets cost $269 (return) on average. On the other hand, the most expensive months are February and March, where the average cost of round-trip tickets is $378 and $377 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Houston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Houston, you should book around 4 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from Philadelphia to Houston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines and PHL

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.

Joe Cortez

Joe Cortez

Expert on Spirit Airlines

Joe Cortez is a seasoned managing editor in aviation with over a decade of industry experience. His work has been featured on prominent platforms such as FlyerTalk and TripSavvy, establishing him as a respected voice in aviation journalism.

John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Good to know

Cheapest flight$88
Flight from Philadelphia to Houston George Bush Airport

When to book flights from Philadelphia to Houston

Are your dates flexible? Find out the best times to travel from Philadelphia to Houston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Houston

  • What is the cheapest flight from Philadelphia to Houston?

    In the last 3 days, the lowest price for a flight from Philadelphia to Houston was $88 for a one-way ticket and $188 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Houston?

    A passport is required to fly from Philadelphia to Houston.

  • Which aircraft models fly most regularly from Philadelphia to Houston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Houston?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Philadelphia and Houston, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Philadelphia to Houston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Houston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Houston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Houston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston with an airline and back to Philadelphia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Houston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Philadelphia to Houston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to Houston.
Find which airlines fly direct from Philadelphia Airport to Houston, which days they fly and book direct flights.

Direct departures

Philadelphia to Houston

Monday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines,Frontier

American Airlines,United Airlines, +1 more

Thursday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

Friday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

Saturday

American Airlines,United Airlines,Frontier

American Airlines,United Airlines, +1 more

Sunday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

See more direct flights

Direct returns

Houston to Philadelphia

Monday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines,Frontier

American Airlines,United Airlines, +1 more

Thursday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

Friday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

Saturday

American Airlines,United Airlines,Frontier

American Airlines,United Airlines, +1 more

Sunday

American Airlines,Frontier,United Airlines

American Airlines,Frontier, +1 more

See more direct flights

Reviews of the top 5 airlines serving from Philadelphia to Houston

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Houston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Houston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4318 reviews
7.5Entertainment
8.0Comfort
7.0Food
8.1Boarding
8.6Crew
Airline reviews

I elected to pay for the upgrades and found very little difference

6.0 GoodChris, Mar 2026
DAL - SAT
Read more Southwest reviews

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Everything was on time and service on the flight was great!

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Very old flight - time to retire it for newer airplanes

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything except the food and entertainment. It was a great experience though

Delayed, toilets did not flush, pilot parked to far away from Gate

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

flight delayed because of poor staffing and organization - confusion from gate agents and flight attendant supervisors scheduling a missing flight attendant. flight delay 1 hr 30 min

My flight was delayed by over an hour and the turbulance was horrible.

This flight cancelled. I am in the airport right now and my kids sleep on the floor. We are waiting for information in the line 4 hours and rude woman from spirit airline offers us flight to Austin on 23 February. No water no food offer. The offer to book hotel and they will refund 150$. The nearest hotel 450$ per night. So I got flight to San Antonio 02/22 at 7am. I hate this company, they are rude and no empathy. So many people with kids were there. And I don’t sleep and it is cold here. I don’t have warm clothes for me and my kids. And I don’t have money for transport from San Antonio to my Austin.

The flight was delayed over an hour which got us into DFW at approximately 2:20 am

Terrible. Spirit cancelled the flight with 3 hours notice and were absolutely no help getting another flight. Had to make my own reservation on another airline and arrived in Dallas 12 hours later.

They cancelled the flight due to crew unavailability. The next day they cancelled the flight again.

That gate is like a ducking shelter at Newark No where to sit Outlets that don’t work Bathrooms that are dirty

For the cost you can't e too critical, but the inablitiy to recline the seat and minimal cushioning in the seats made for a less than comfortable flight. Other than that we had an ealry departure and arrival, boarding was smooth.

This was my best experience with spirit. I flew you guys 4 times and I must say this was the BEST

This was my first time on a budget airline and I couldn't even sit down all the way because my knees would embed in the seat in front of me. I'm only 6' tall with a 32" inseam. There's no upside other than y'all are cheap. I'm glad it was only a 2 hour flight. Lesson learned! I get why everybody talks down on budget airlines. The staff was outstanding, the flight went as well as possible, great pilot, great boarding, smooth sailing. Zero chance I'll be back though.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

First of all we hade waited 3 hours in the airplane waiting to leave. Second the return schedule was changed and it messed up my entire vaction. I won't buy never again another flight and recommend to nobody traveling with them.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

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

Information on your arrival and departure airports