$103 Find Cheap Flights from Philadelphia to St. Louis - Compare and Save

These are the earliest and latest flight times currently scheduled from Philadelphia to St. Louis:

• Earliest: departs at 5:00 am and lands at 7:43 am
• Latest: departs at 10:05 pm and lands at 12:48 am.

The flight takes about 2h 43m.

Two cabin classes are available on flights from Philadelphia to St. Louis:

• Economy Class
• First Class

A nonstop flight from Philadelphia to St. Louis takes about 2h 43m, covering 811 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Philadelphia to St. Louis range from $345 to $552, with an average of $430 over the past 12 months. Anything below $345 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 61% above the $430 route average. Book 24 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $207 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $442 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A319 family is used most often on this route, operated mainly by American Airlines. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

Morning is most often the busiest departure period on Philadelphia to St. Louis flights, with 50% of flights leaving in that window. Afternoon departures account for 25%, and evening flights for 25%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $285 to $1,437. That means the highest observed fare was about 5x higher than the lowest one.

Two airlines typically offer in-flight Wi-Fi on Philadelphia to St. Louis flights:

• American Airlines
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

One-way fares from Philadelphia to St. Louis are currently lower than usual. Average one-way flight prices are about $147, which is 45% below the typical average for this route.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $77 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Flights from Philadelphia to St. Louis usually depart from Philadelphia (PHL) and arrive at Lambert-St Louis (STL).

One-stop flights from Philadelphia to St. Louis most commonly connect through:

• Orlando (MCO) - 61% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 20% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 10% of one-stop connections
• Chicago O'Hare Intl (ORD) - 6% of one-stop connections

Yes. Flexible dates can save you up to 22% on flights from Philadelphia to St. Louis. Saturday is the cheapest departure day at $378 round-trip on average, while Monday is the most expensive at $483, a difference of $105.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Only American Airlines and Southwest currently operate flights between Philadelphia and St. Louis on a regular basis.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 3h 59m, compared with 4h 19m via Detroit Metropolitan Wayne County (DTW) and 5h 05m via Chicago O'Hare Intl (ORD).

St. Louis is 1 hour behind Philadelphia (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

American Airlines and Southwest offer free seat selection on this route. Availability depends on fare class.

Only American Airlines currently offers extra legroom on this route. Availability can vary by aircraft type and fare class.

Here are some options for this route, based on selected ticket types and cabin classes:

• American Airlines: a cabin bag and a checked bag in Economy Class
• Southwest: a cabin bag and a checked bag in Economy Class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

MetroLink provides train service from the airport to the city center. The train departs from Lambert Airport Terminal 1 station and arrives at Stadium Station. It typically runs 406 times weekly with the duration of the ride being around 45 minutes. Public buses also offer service the route between the airport and the city center with a journey time of around 45 minutes. The cost will vary depending on the bus you choose.

Frontier Airlines offers several seat options, including standard seats, which are the regular seats, and stretch seats, which are seats with additional legroom that are available for purchase for an additional fee, and are often located in the front of the plane or the emergency exit rows. Frontier Airlines offer passengers the option to choose their own seats for a fee, instead of having the airline randomly assign them.

Southwest Airlines allows passengers on flights from Philadelphia to St. Louis to check up to two bags for free as part of the fare, provided that the bags do not exceed 50 lbs in weight and 62 inches in size. Passengers are allowed to bring one carry-on bag and one personal item on board the aircraft. The carry-on bag must not exceed 24 inches in length, 16 inches in width, and 10 inches in height. In addition, passengers will be charged an additional fee of $75 per one-way trip for bags that exceed the weight limit of 50 lbs, up to a maximum weight of 100 lbs.

Alaska Airlines offers several services on economy class flights including limited food and drinks, which may include a choice of snacks or meals, free soft drinks, coffee, and tea on all flights, leather headrests and a wide range of in-flight entertainment options, and standard economy seats with average legroom and seat-back pockets for storage.