$109 Find Cheap Flights from Philadelphia to Houston - Compare and Save

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 8/30. 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.
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Everything you should know

Cheapest round-trip
$261
Typical prices: $271-$371
Frontier
Wed 8/19Fri 8/21
PHL - IAH • 2 stops
Cheapest non-stop
$289
Typical prices: $294-$372
United Airlines
Wed 8/26Sat 8/29
PHL - IAH • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Economy Plus adds up to 6 inches more legroom on this domestic route.
American Main Cabin Extra includes early boarding and complimentary drinks.
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Cheapest • from $261 (round-trip)
Best reviews • 8.0 score
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Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 3h 39m
Direct flights
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Direct flights
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Top routes
Cheapest
Most popular
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 28% compared to booking last minute.
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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

Wed, Aug 19 - Fri, Aug 21
Frontier Logo
6:40 pm - 10:14 pm
PHL
-
IAH
28h 34m
2 stops
Frontier Logo
4:32 pm - 7:15 am
IAH
-
PHL
13h 43m
1 stop
$261Frontier
Wed, Aug 12 - Tue, Aug 18
Frontier Logo
6:33 pm - 10:29 pm
PHL
-
IAH
28h 56m
2 stops
Frontier Logo
4:32 pm - 7:15 am
IAH
-
PHL
13h 43m
1 stop
$263Frontier
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
7:50 am - 3:17 pm
PHL
-
IAH
8h 27m
1 stop
Multiple Airlines Logo
8:25 am - 12:30 am
IAH
-
PHL
15h 05m
2 stops
$277Multiple Airlines
Sun, Sep 20 - Sun, Sep 27
Multiple Airlines Logo
6:10 pm - 9:35 am
PHL
-
IAH
40h 25m
2 stops
Multiple Airlines Logo
2:18 pm - 11:55 pm
IAH
-
PHL
8h 37m
1 stop
$277Multiple Airlines
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
6:13 pm - 8:48 pm
PHL
-
IAH
3h 35mnonstop
United Airlines Logo
7:30 am - 11:58 am
IAH
-
PHL
3h 28mnonstop
$289United Airlines
Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
6:16 am - 8:50 am
PHL
-
IAH
3h 34mnonstop
United Airlines Logo
6:05 pm - 10:31 pm
IAH
-
PHL
3h 26mnonstop
$289United Airlines
Wed, Jan 13 - Wed, Jan 20
American Airlines Logo
7:16 pm - 10:30 pm
PHL
-
IAH
4h 14mnonstop
American Airlines Logo
2:23 pm - 6:34 pm
IAH
-
PHL
3h 11mnonstop
$289American Airlines
Sat, Sep 5 - Wed, Sep 9
American Airlines Logo
7:50 pm - 10:40 pm
PHL
-
IAH
3h 50mnonstop
American Airlines Logo
12:01 pm - 4:37 pm
IAH
-
PHL
3h 36mnonstop
$289American Airlines
Wed, Nov 4 - Sat, Nov 7
Southwest Logo
2:50 pm - 7:05 pm
PHL
-
HOU
5h 15m
1 stop
Southwest Logo
6:05 am - 12:05 pm
HOU
-
PHL
5h 00m
1 stop
$304Southwest
Wed, Dec 2 - Sat, Dec 5
Southwest Logo
2:50 pm - 7:05 pm
PHL
-
HOU
5h 15m
1 stop
Southwest Logo
7:50 am - 1:45 pm
HOU
-
PHL
4h 55m
1 stop
$304Southwest
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.

How much is a round-trip flight from Philadelphia to Houston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Houston departing in August.

Flight prices are below average for this route right now.

Flights to Houston from Philadelphia usually cost between $270 and $371 in August.
The lowest price found in the past 5 days was $261 on Frontier (Aug 19-Aug 21).

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 $279 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 Saturday 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 $293 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $411 and $381 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 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 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.

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

$109
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 5 days, the lowest price for a flight from Philadelphia to Houston was $109 for a one-way ticket and $261 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,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more direct flights

Direct returns

Houston to Philadelphia

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

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 4227 reviews
8.6Crew
8.0Comfort
7.5Entertainment
8.1Boarding
7.0Food
Airline reviews

My experience will Southwest was good. I wish there was more entertainment and the boarding process was slow at time but other than that my experience was great definitely will be flying with SouthWest again.

8.0 ExcellentAnonymous, Jul 2026
PHL - BNA
Read more Southwest reviews

My experience will Southwest was good. I wish there was more entertainment and the boarding process was slow at time but other than that my experience was great definitely will be flying with SouthWest again.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

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

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

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

For my birthday trip this was my second time ever flying, this trip was the best.

The movies using Southwest WiFi kept pausing and I had to restart multiple times.

First, my flight was a usual flight nothing exceptional or unexpected. Over all it was a normal, good flight! Second, your questionaire is wholly lacking in the proper options to which one can answer a question. Often on short flights, there is no food let alone entertainment so why isn't that reflected in your questionaire? A simple "not applicable" would cover that issue appropriately but no, your form arbitrarily enters an answer based on the initial assessment which normally isn't factual. Until you provide an accurate means of assessing flights, I'll no longer be completing of these unimpressive and misleading assessements. Thank you!

We boarded the flight and set two and a half hours on the jetway. Would have been better if they had not boarded us at all. Plane was hot and it was limited ability to access the restrooms or get a drink of water. Very unpleasant experience

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Connection flights should be spaced out farther because too close I missed my connection.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

My flight consistently said it was on time and the plane didn’t arrive until after 30 minutes after take off and nothing was announced to passengers

Great!! I haven’t had a bad experience with them.

Wonderful flight! The crew was good, check-in was good and orderly and the flight was uneventful and good.

The international portion was good. Food and beverage options were good. The sustainable wooden eatery was less than desirable. Your Star Alliance partner ANA provided real silverware. I'm 6'3" & 198 lbs and felt cramped in the exit row. How can that be? Flight attendant all had a pleasant disposition which is always good.

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

The flight was delayed, they didn’t even have water for the toilets or for drinks

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Flight was on time, crew were excellent. For some reason our originally selected seats were changed. We had to re-choose our seats when we checked in online and options were limited. One of our two checked bags we placed on the wrong carousel. It was only be shear luck that I saw it. That cost us 20 minutes of wasted time. So much for the “priority” tags. They are meaningless, and have been ever since they were implemented. I wish you would do the save some money and stop using them.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

Very good, boarded and took off on time and landed early

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

Quick flight again no one illness why there were multiple delays and changing of the gate number.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

It’s a great flight. Service is good. Staff is awesome.

If there was enough room for me to bring my carry on luggage with me on the flight.

After sitting on plane for 7+ hours, flight was canceled. And to makes matters worse, my suitcase is in baggage hell!

The flight was smooth & the landing was excellent. Your pilot did such a great job whereby I did not even realize we had landed-so soft & quiet. The staff was excellent as well.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

terrible cascading delays and unhelpful customer service. uncomfortable plane. crew was great, however!

Booked direct in July '24. Turned into a 14 hr layover (both ways) in Denver. My 5 day vaca turned into a 1 day . Not good, BUT,... Thank you for the people @ Frontier who were professionally friendly & approachable.

They delayed my flight so long that I would miss my connector. After that they gave me a free transfer to a different flight. My current flight was supposed to leave at 630am. They put me on a plane that leaves at 730pm the same day. Then they didn’t tell me but the connector flight was now 18 hours later the next day. And they refused to put us in a hotel for the night in the connector city. After hrs of them rudely arguing with us we cancelled our flight and went with a better airline. I will never fly frontier again. They owe me about 1200 dollars and refused to refund our money on their mistake.

Retrain your customer service representatives at the check in counter. Retrain the customer service representatives at the boarding gate. The only associates that were pleasant were the flight crew. Worse trip that I ever had and maybe reason I don't want to fly with Frontier Airlines again. I was told that I missed my flight at 5:40 a.m., was given 2 tickets because it wasn't a straight flight. I was charged an additional $99, and even had to pay again for my bag $99. Just a horrible experience.

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

Information on your arrival and departure airports