Lowest Prices
Find the lowest STL airfares by comparing hundreds of airlines and agencies.
Good to Know: Flights to STL
Useful information for finding cheap flights to Lambert St Louis International and booking your next trip
Cheapest Round Trip Flight
$251
Southwest Airlines• 1 stop • 10h 15mDec 18 – Dec 23
The cheapest round trip flight from Philadelphia International to Lambert St Louis International is currently $251
Cheapest Direct Flight
$248
Southwest Airlines• nonstop• 3h 50mDec 18
The cheapest nonstop flight from Philadelphia International to Lambert St Louis International is currently $248
Fastest Flight
3h 50m
The fastest nonstop flight from Philadelphia International to Lambert St Louis International takes 3h 50m
Best Flight Deals to St Louis
Identify the most efficient round-trip flights to St Louis. We present options balancing cost and convenience for your return journey.
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
10h 15m
3:20 PM - 8:35 PM • 1 stop
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
12h
2:10 PM - 8:30 PM • 2 stops
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
10h 15m
3:20 PM - 8:35 PM • 1 stop
Philadelphia → St Louis
10h
4:50 PM - 11:50 PM • 1 stop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
10h 55m
2:10 PM - 8:05 PM • 1 stop
Philadelphia → St Louis
8h 50m
5:00 AM - 11:30 AM • 1 stop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
8h 52m
2:50 PM - 7:22 PM • 1 stop
Philadelphia → St Louis
8h 43m
11:05 AM - 5:28 PM • 1 stop
United Airlines
Need to travel to St Louis soon? View current last-minute flight options to STL for spontaneous or pressing plans.
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
10h 15m
3:20 PM - 8:35 PM • 1 stop
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
12h
2:10 PM - 8:30 PM • 2 stops
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
10h 15m
3:20 PM - 8:35 PM • 1 stop
Philadelphia → St Louis
10h
4:50 PM - 11:50 PM • 1 stop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
10h 55m
2:10 PM - 8:05 PM • 1 stop
Philadelphia → St Louis
8h 50m
5:00 AM - 11:30 AM • 1 stop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
8h 52m
2:50 PM - 7:22 PM • 1 stop
Philadelphia → St Louis
8h 43m
11:05 AM - 5:28 PM • 1 stop
United Airlines
Maximize your time in St Louis, not in transit. Discover non-stop direct flights to STL for the quickest, most straightforward journey to the Strip.
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
3h 50m
7:40 AM - 9:10 AM • nonstop
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
3h 50m
1:40 PM - 3:10 PM • nonstop
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
3h 50m
8:00 PM - 9:30 PM • nonstop
Philadelphia → St Louis
3h 30m
8:10 AM - 11:20 AM • nonstop
Southwest Airlines
Dec 18 - Dec 30, Economy
Las Vegas → St Louis
5h 10m
6:00 AM - 11:10 AM • nonstop
Las Vegas → St Louis
5h 35m
10:00 PM - 11:35 PM • nonstop
Southwest Airlines
Dec 18 - Dec 23, Economy
Philadelphia → St Louis
3h 59m
10:50 AM - 12:29 PM • nonstop
Philadelphia → St Louis
3h 30m
1:59 PM - 5:09 PM • nonstop
American Airlines
Destination Airport Information
| IATA Code | STL |
| Name | Lambert St Louis International |
| City | St Louis |
| Country | US |
| Latitude | 38.74869918823242 |
| Longitude | -90.37000274658203 |
Popular Airlines
More Flight Options to St Louis, STL
Why Bargainspricer for Flights to STL
New Deals Everyday
Never miss a deal on STL flights—we update prices daily to bring you the best airfares.
Best Travel Options
Compare hundreds of STL flights and find the best deals without any added service charges.