United's Economy Plus offers extra legroom and priority boarding for a more comfortable journey.
Prepay for checked bags 24 hours before to save on fees with United.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $167 (Kiwi.com) |
One-way from | $78 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $315 |
Good round-trip deal | $295 or less |
Good one-way deal | $193 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Tue 1/20
5:50 pm-8:50 pm
Nonstop4h 00m
Houston George Bush Intcntl
Tue 1/27
12:20 pm-4:36 pm
Nonstop3h 16m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Wed 12/24
3:35 pm-6:29 pm
Nonstop3h 54m
Houston George Bush Intcntl
Fri 1/2
11:29 am-3:48 pm
Nonstop3h 19m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Wed 12/31
6:51 am-9:51 am
Nonstop4h 00m
Houston George Bush Intcntl
Mon 1/5
6:40 pm-10:56 pm
Nonstop3h 16m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Thu 12/25
9:18 am-10:55 pm
1 stop14h 37m
Houston George Bush Intcntl
Thu 1/1
6:00 am-3:01 pm
1 stop8h 01m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Sat 1/17
10:30 am-3:18 pm
1 stop5h 48m
Houston George Bush Intcntl
Sun 1/25
9:54 am-5:44 pm
1 stop6h 50m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Fri 1/9
12:11 pm-5:42 pm
1 stop6h 31m
Houston George Bush Intcntl
Sat 1/17
4:25 pm-12:23 am
1 stop6h 58m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Wed 11/19
5:58 pm-8:50 pm
Nonstop3h 52m
Houston George Bush Intcntl
Sun 11/23
6:30 pm-10:46 pm
Nonstop3h 16m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Fri 11/14
5:58 pm-8:50 pm
Nonstop3h 52m
Houston George Bush Intcntl
Sun 11/16
7:25 am-11:40 am
Nonstop3h 15m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Thu 11/13
5:58 pm-8:50 pm
Nonstop3h 52m
Houston George Bush Intcntl
Sun 11/16
7:25 am-11:40 am
Nonstop3h 15m
PhiladelphiaHouston
PHL - IAH
PHLIAH
Philadelphia
Fri 10/31
8:15 am-11:00 am
Nonstop3h 45m
Houston George Bush Intcntl
Sat 11/1
7:20 am-2:07 pm
1 stop5h 47m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
The price you pay for your flight from Philadelphia to Houston George Bush Intcntl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, March is the cheapest month in which you can book a flight from Philadelphia to Houston George Bush Intcntl Airport (average of $82). Flying from Philadelphia to Houston George Bush Intcntl Airport in July is currently the most expensive (average of $115). 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.
Unlike in the morning, when flights are generally more expensive, you can save up to 53% on flights from Philadelphia to Houston George Bush Intcntl Airport by exploring options for tickets in the evening.
Travelers seeking maximum savings on their Philadelphia to Houston George Bush Intcntl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Fort Lauderdale (FLL) – chosen by Cheapflights users on 67% of 1-stop itineraries from Philadelphia to Houston George Bush Intcntl Airport on Cheapflights.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 6h 56m.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 6h 56m.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 31m.
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Boarding
Entertainment
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Reviews
Matthew,Oct 2025
GSP - ATL
Crew
Boarding
Entertainment
Food
Overall
Comfort
Reviews
Matthew,Oct 2025
GSP - ATL
Crew
Boarding
Entertainment
Food
Overall
Comfort
Reviews
Matthew,Oct 2025
GSP - ATL
Crew
Boarding
Entertainment
Food
Overall
Comfort
Reviews
Matthew,Oct 2025
GSP - ATL
Crew
Boarding
Entertainment
Food
Overall
Comfort
Reviews
Matthew,Oct 2025
GSP - ATL
Crew
Boarding
Entertainment
Food
Overall
Comfort
Reviews
Matthew,Oct 2025
GSP - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$202 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$115 | Average$190 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$216 | Average$337 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$224 | Average$397 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$298 | FlexibilityNo cancel fee | On-timeN/A |