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Cheap Flights from St Louis to Philadelphia, PA, United States - STL to PHL

Popular flights from St Louis to Philadelphia

If your flight days are flexible and you looking for a good deal, our charts on cheap flights provide some insight regarding affordable flight options for your next big adventure.

American Airlines
Departure Date Return Date Lowest Price
Mar 23, 2016 Mar 29, 2016 $313
May 14, 2016 May 17, 2016 $313
United Airlines
Departure Date Return Date Lowest Price
Mar 23, 2016 Mar 29, 2016 $313
May 14, 2016 May 17, 2016 $313

How Much Does it Cost to Fly from St Louis to Philadelphia (STL to PHL)?

We have collected flight cost data from across the web for travel from St Louis to Philadelphia, and have found the average flight price for this trip to be $326.

When Can I Buy the Cheapest Flight from St Louis to Philadelphia (STL to PHL)?

Airlines can adjust prices for plane tickets from St Louis to Philadelphia based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from St Louis to Philadelphia

The chart below shows up-to-date information regarding how far in advance a flight from St Louis to Philadelphia should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $524 $531
7-14 days $318 $318
14-21 days $318 $318
21-30 days $325 $329
30-60 days $313 $313
60-90 days $319 $325
90+ days $313 $313

Cheapest Day To Fly from St Louis to Philadelphia

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Philadelphia.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$329 $324 $313 $335 $330 $318 $335

Lowest Fares Chart By Month from St Louis to Philadelphia

The chart below shows the lowest fare by month when flying from St Louis to Philadelphia.

Month Origin Destination Carrier Depart Date Return Date Stops Price
February St Louis Philadelphia American 2/27/16 2/29/16 0 $318
March St Louis Philadelphia American 3/23/16 3/29/16 0 $313
April St Louis Philadelphia American 4/19/16 4/23/16 0 $325
May St Louis Philadelphia American 5/14/16 5/17/16 0 $313
June St Louis Philadelphia American 6/7/16 6/15/16 0 $325
July St Louis Philadelphia American 7/14/16 7/17/16 0 $342
August St Louis Philadelphia American 8/1/16 8/7/16 0 $368
October St Louis Philadelphia American 10/25/16 10/29/16 0 $381

Cheapest Weekend Non-Stop Flights for the Next 30 Days from St Louis to Philadelphia

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from St Louis to Philadelphia.

Next 30 Days

SunMonTueWedThuFriSat
21 22 23 24 25 26 27
$318
28 29 1 2 3 4 5
$318 $335
6 7 8 9 10 11 12
$335 $369
13 14 15 16 17 18 19
$369 $364
20 21 22 23 24 25 26
$364

TIPSave $137 by flying into Allentown - Bethlehem - Easton instead of Philadelphia from St Louis

Non-Stop vs Connecting Flights from St Louis to Philadelphia (STL to PHL)

Your St Louis to Philadelphia flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from St Louis to Philadelphia is $326.

The average price for non-stop flights from St Louis to Philadelphia is $319.

The chart below shows up to date information regarding non-stop flights from St Louis to Philadelphia.

Nonstop Flight Details from St Louis to Philadelphia
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 4 3 3 4 4 2 3 07:10 16:20

Round Trip vs One Way Flights from St Louis to Philadelphia (STL to PHL)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Philadelphia. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Philadelphia is $160.

The average price for round trip flights from St Louis to Philadelphia is $323.

St Louis to Philadelphia Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from St Louis to Philadelphia?
Answer: The average St Louis to Philadelphia flight time is 2 hours and 10 minutes.
Question: How many miles are there between St Louis and Philadelphia?
Answer: The distance from St Louis to Philadelphia is 811 miles.
Question: How common are direct flights from St Louis to Philadelphia?
Answer: There are 23 direct flights from St Louis to Philadelphia.
Question: What is the most popular airline for non-stop flights from St Louis to Philadelphia?
Answer: American Airlines provides 100% of the non-stop flights between St Louis and Philadelphia.
Question: What are the most popular connecting cities when flying from St Louis to Philadelphia?
Answer: Chicago, IL

Airlines Flying from St Louis to Philadelphia (STL to PHL)

Below are the different airlines that fly from St Louis to Philadelphia with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Philadelphia.

St Louis to Philadelphia
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American - X X X X X X X
American DCA X X X X X X X
Delta CVG X X X X X X X
United IAD X X X X X X X
Southwest - X X X X X X X
Southwest BNA X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Philadelphia, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to New York American, Alaska, United $242
St Louis to Newark American, JetBlue, United $242
St Louis to Washington American, United $184
St Louis to Baltimore American, United $184
St Louis to Atlantic CityCheck Dates
St Louis to Chicago American, United $204
St Louis to Atlanta American, Alaska, Frontier, United $104
St Louis to Allentown - Bethlehem - Easton American, United $192
St Louis to Boston American, Alaska, United $247
St Louis to Harrisburg American, United $379

Cheap Domestic Flights to Philadelphia - PHL

FlightsAirlineLowest Price
Moline to Philadelphia American, United $322
Springfield to Philadelphia American, United $406
Evansville to Philadelphia American, United $349
Peoria to Philadelphia American, United $322
Bloomington - Normal to Philadelphia American $322
Champaign to Philadelphia American, United $311
Springfield to Philadelphia American, United $362
Evansville to New York American, United $392
Springfield to New York American, United $363
Bloomington - Normal to Newark American $279
Moline to Newark American, United $236
Springfield to Newark American, United $383
Springfield to Baltimore American, United $452
Moline to Baltimore American, United $299
Peoria to Newark American, United $236
Peoria to Baltimore American, United $327
Bloomington - Normal to New York American $236
Evansville to Newark American, United $396
Moline to New York American, Alaska, United $236
Springfield to Washington American, Alaska, United $408
Cheap Flights from St Louis to Philadelphia, PA, United States, from $313 Round trip from STL to PHL