Cheap flights from Houston to Philadelphia from $81

The cheapest month to fly to Philadelphia from Houston is in July. Flight prices, which tend to average around $270, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Philadelphia, with average flight prices from Houston averaging around $271.

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Houston to Philadelphia in the evening for as low as $212. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is at noon when prices are around $624.

Fly from Houston George Bush Intcntl to Philadelphia for the best Houston - Philadelphia flight prices

You are more likely to see cheaper flights to Philadelphia from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $324 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Houston for as low as $256 on momondo.

Frontier, Southwest, and Delta are the most popular carriers operating from Houston to Philadelphia

United Airlines, Spirit Airlines and American Airlines are the top three most popular airlines that fly to Philadelphia from Houston according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 7 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Houston and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 161 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

The number of flights available between Houston and Philadelphia is 11 per day as of April 2026. The most frequent departure time is 7:00AM, with 47% of daily flights leaving at noon.

The number of flights available between Houston and Philadelphia is 77 per week as of April 2026. The most frequent departure day is Fri, with 18% of weekly flights leaving on this day.