Cheap flights from St. Louis to Philadelphia (STL - PHL) from $51

Departing on a Friday is a good option for securing a great price. You can expect to save up to 42% when planning your travel around this day of the week.

Users have found that booking a flight from St. Louis to Philadelphia at least 32 days early can save you up to 26% on average compared to booking a flight this week. If booking 32 days before your flight isn’t an option for you, users have found flights from St. Louis to Philadelphia for as little as $435 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $519 for flights departing within the next 3 days.

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Philadelphia. Flights to Philadelphia from St. Louis in January are about $401 on average during January, but can be found for as low as $230.

It’s typically best to fly out from St. Louis to Philadelphia in the evening. Doing so could potentially save you 46% on the flight price compared to flying at noon, which is usually more expensive.

Booking a flight from Lambert-St Louis (STL) to Philadelphia (PHL) is your only option if you wish to fly from St. Louis to Philadelphia. On a typical day, there are 4 flights from Lambert-St Louis to Philadelphia, all of which are around 2h 04m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Lambert-St Louis to Philadelphia.

Yes, there are multiple flights from St. Louis to Philadelphia for under $200. The cheapest flight booked recently is on Frontier for just $118, but on average you can expect to pay $152.

Cheapflights has at least 20 direct flights from St. Louis to Philadelphia under $300. A good price for a nonstop flight from St. Louis to Philadelphia is less than $394.

You can find nonstop flights on the following days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

Within the past month, 15 users have taken a look at flights from Lambert-St Louis to Philadelphia.

On average 15 flights depart from St. Louis to Philadelphia per day.
Early Morning (Midnight to 6am) - 13% of flight departures
Morning (6am - Noon) - 20% of flight departures
Afternoon (Noon - 6pm) - 60% of flight departures
Evening (6pm - Midnight) - 7% of flight departures

There are many flights that can get you from St. Louis to Philadelphia in 12h 24m. Fly via Frontier or Spirit Airlines to get the fastest option. Airlines will cover a distance of 816 mi. This flight may include one or multiple stops.

Cheapflights users have booked flights from St. Louis to Philadelphia round-trip from $118. Another airline that can offer you cheap pricing is Spirit Airlines. These flights start at 70% lower than the current average price 3 months from now.

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $51. Users have also found prices from $58 and $143 on Frontier and American Airlines, respectively.

The most popular airlines flying from St. Louis to Philadelphia are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

No one likes to see their flight delayed. When booking a flight from St. Louis to Philadelphia consider choosing Aer Lingus (81%), Southwest (79%) or Qatar Airways (73%) as they are the most reliable in getting you off to your destination on time.

While on average a flight from St. Louis to Philadelphia is generally $1,051, our data shows the cheapest flight currently is $146. When looking at the most popular route, (Lambert-St Louis - Philadelphia), you can expect to pay $119 for that flight.

Lambert-St Louis Airport is STL and Philadelphia Airport is PHL. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.