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Cheap Flights from Philadelphia to St Louis, MO, United States - PHL to STL Last modified: May 26, 2016 8:28 PM

Popular flights from Philadelphia to St Louis Last modified: May 26, 2016 8:28 PM

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Jul 3, 2016 Jul 4, 2016 $368
American Airlines
Departure Date Return Date Lowest Price
Aug 23, 2016 Aug 25, 2016 $331
Aug 30, 2016 Sep 10, 2016 $331
Sep 1, 2016 Sep 4, 2016 $331
Sep 14, 2016 Sep 17, 2016 $331
Sep 15, 2016 Sep 17, 2016 $331
United Airlines
Departure Date Return Date Lowest Price
Aug 23, 2016 Aug 25, 2016 $339
Aug 30, 2016 Sep 10, 2016 $339
Sep 14, 2016 Sep 17, 2016 $339
Sep 15, 2016 Sep 17, 2016 $339
Sep 17, 2016 Sep 19, 2016 $339

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

We have collected flight cost data from across the web for travel from Philadelphia to St Louis, and have found the average flight price for this trip to be $364.

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

Airlines can adjust prices for plane tickets from Philadelphia to St Louis 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 Philadelphia to St Louis

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

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $628 $523
7-14 days $467 $467
14-21 days $371 $379
21-30 days $371 $379
30-60 days $368 $379
60-90 days $331 $338
90+ days $331 $338

Cheapest Day To Fly from Philadelphia to St Louis

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

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$381 $331 $379 $351 $351 $381 $368

Lowest Fares Chart By Month from Philadelphia to St Louis

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

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Philadelphia St Louis United 5/31/16 6/3/16 1 $523
June Philadelphia St Louis American 6/21/16 6/22/16 0 $371
July Philadelphia St Louis Alaska 7/3/16 7/4/16 0 $368
August Philadelphia St Louis American 8/23/16 8/25/16 0 $331
September Philadelphia St Louis American 9/1/16 9/4/16 0 $331
October Philadelphia St Louis American 10/19/16 10/24/16 0 $331
November Philadelphia St Louis American 11/5/16 11/16/16 0 $331
January Philadelphia St Louis American 1/28/17 2/2/17 0 $422

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

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 Philadelphia to St Louis.

Next 30 Days

SunMonTueWedThuFriSat
29 30 31 1 2 3 4
$537
5 6 7 8 9 10 11
$537 $476
12 13 14 15 16 17 18
$476 $377
19 20 21 22 23 24 25
$377 $446
26 27 28 29 30 1 2
$446 $381
3 4 5 6 7 8 9
$381

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

Your Philadelphia to St Louis 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 Philadelphia to St Louis is $402.

The average price for non-stop flights from Philadelphia to St Louis is $349.

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

Nonstop Flight Details from Philadelphia to St Louis
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 5 5 5 5 5 2 5 07:45 19:20

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

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 Philadelphia to St Louis. 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 Philadelphia to St Louis is $188.

The average price for round trip flights from Philadelphia to St Louis is $346.

Philadelphia to St Louis Flight Questions

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

Question: How long is a direct flight from Philadelphia to St Louis?
Answer: The average Philadelphia to St Louis flight time is 2 hours and 29 minutes.
Question: How many miles are there between Philadelphia and St Louis?
Answer: The distance from Philadelphia to St Louis is 811 miles.
Question: How common are direct flights from Philadelphia to St Louis?
Answer: There are 32 direct flights from Philadelphia to St Louis.
Question: What is the most popular airline for non-stop flights from Philadelphia to St Louis?
Answer: American Airlines provides 100% of the non-stop flights between Philadelphia and St Louis.
Question: What are the most popular connecting cities when flying from Philadelphia to St Louis?
Answer: Atlanta, GA

Airlines Flying from Philadelphia to St Louis (PHL to STL) Number of flights searched: 188Last modified: May 26, 2016 8:28 PM

Below are the different airlines that fly from Philadelphia to St Louis 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 Philadelphia to St Louis.

Philadelphia to St Louis
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American - X X X X X X X
American ORD X X X X X X X
Delta ATL X X X X X X X
United ORD X X X X X X X
Southwest - X X X X X X X
Southwest MDW X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Philadelphia and St Louis, 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 Philadelphia - PHL

FlightsAirlineLowest Price
Philadelphia to Chicago American, Alaska, Frontier, United $127
Philadelphia to Atlanta American, Frontier, Spirit, United $117

Cheap Domestic Flights to St Louis - STL

FlightsAirlineLowest Price
New York to St Louis American, Alaska, United $234
Washington to St Louis American, Alaska, United $203
Baltimore to St Louis American, Alaska, United $321
Newark to St Louis American, Alaska, United $235
Hartford to St Louis American, Alaska, United $252
Richmond to St Louis American, Alaska, United $275
Westchester County to St Louis American, Alaska, United $290
Long Island MacArthur to St Louis American, United $447
Newburgh to St LouisCheck Dates
Harrisburg to St Louis American, Alaska, United $369
State College to St Louis American, United $372
Allentown - Bethlehem - Easton to St Louis American, United $280
Wilkes - Barre to St Louis American, United $252
Ithaca to St Louis American, United $442
Binghamton to St Louis American, United $362
Elmira - Corning to St Louis American $363
New York to Atlanta American, Alaska, Frontier, Spirit, United $151
New York to Dallas - Ft Worth American, Alaska, JetBlue, Spirit, United, Virgin America $144
Washington to Chicago American, Alaska, Frontier, United $98
New York to Orlando American, JetBlue, Frontier, Spirit, United $127
New York to Miami American, Frontier, United $136
Newark to Chicago American, Alaska, JetBlue, United $160
New York to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $241
New York to Detroit American, JetBlue, Spirit, United $143
Baltimore to Chicago American, Spirit, United $107
New York to Minneapolis - St Paul American, Sun Country, United $277

Cheap International Flights to St Louis - STL

FlightsAirlineLowest Price
New York to London American, Air Berlin, Air France, Finnair, Alitalia, JetBlue, British Airways, airBaltic, Condor, OpenSkies, Aer Lingus, Iberia, Meridiana, KLM, Kuwait, Luxair, Lufthansa, LOT, Thomas Cook, Czech, Austrian, TAROM, SATA, XL Airways, SAS, Brussels, Tap Portugal, United, Air Europa, Virgin Atlantic, City Jet $752
New York to Toronto American, Air Canada, Alaska, JetBlue, Porter, United, WestJet $173
Cheap Flights from Philadelphia to St Louis, MO, United States, from $331 Round trip from PHL to STL