$95 Cheap flights from Philadelphia Intl. to Lambert-St. Louis Intl. (PHL to STL)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Philadelphia Intl. to Lambert-St. Louis Intl.

Compare Flight Prices from Philadelphia to St. Louis

Affordable Airfare Tickets from PHL to STL Airport

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $188 round trip and $95 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Apr 29 - Wed, Apr 30
PHL
Philadelphia
STL
St. Louis
$188 Roundtrip, found 7 hours ago
$188
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Tue, Apr 29 from Philadelphia to St. Louis, returning Wed, Apr 30, priced at $188 found 7 hours ago
Sat, May 3 - Sat, May 10
PHL
Philadelphia
STL
St. Louis
$190 Roundtrip, found 8 hours ago
$190
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Sat, May 3 from Philadelphia to St. Louis, returning Sat, May 10, priced at $190 found 8 hours ago
Sat, May 3 - Wed, May 7
TTN
Trenton
STL
St. Louis
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, May 3 from Trenton to St. Louis, returning Wed, May 7, priced at $191 found 1 day ago
Fri, May 9 - Wed, May 21
TTN
Trenton
STL
St. Louis
$198 Roundtrip, found 2 days ago
$198
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, May 9 from Trenton to St. Louis, returning Wed, May 21, priced at $198 found 2 days ago
Tue, May 6 - Wed, May 7
PHL
Philadelphia
STL
St. Louis
$200 Roundtrip, found 4 days ago
$200
Roundtrip
found 4 days ago
Select Spirit Airlines flight, departing Tue, May 6 from Philadelphia to St. Louis, returning Wed, May 7, priced at $200 found 4 days ago
Mon, May 5 - Wed, May 7
TTN
Trenton
STL
St. Louis
$201 Roundtrip, found 1 day ago
$201
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, May 5 from Trenton to St. Louis, returning Wed, May 7, priced at $201 found 1 day ago
Tue, May 13 - Thu, May 15
PHL
Philadelphia
STL
St. Louis
$205 Roundtrip, found 7 hours ago
$205
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Tue, May 13 from Philadelphia to St. Louis, returning Thu, May 15, priced at $205 found 7 hours ago
Tue, Apr 29 - Sat, May 3
PHL
Philadelphia
STL
St. Louis
$208 Roundtrip, found 3 hours ago
$208
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Tue, Apr 29 from Philadelphia to St. Louis, returning Sat, May 3, priced at $208 found 3 hours ago
Wed, May 14 - Sat, May 17
PHL
Philadelphia
STL
St. Louis
$210 Roundtrip, found 1 day ago
$210
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, May 14 from Philadelphia to St. Louis, returning Sat, May 17, priced at $210 found 1 day ago
Wed, May 21 - Sat, May 24
PHL
Philadelphia
STL
St. Louis
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, May 21 from Philadelphia to St. Louis, returning Sat, May 24, priced at $211 found 1 day ago

Lambert-St. Louis Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Hilton Garden Inn Chesterfield

Hilton Garden Inn Chesterfield

3 out of 5
per person
May 25 - Jun 1
found 1 day ago
Roundtrip non-stop flight included
Philadelphia (PHL) to St. Louis (STL)
The Wildwood Hotel

The Wildwood Hotel

3.5 out of 5
Save 100% on your flight
per person
May 25 - Jun 1
found 1 day ago
Roundtrip non-stop flight included
Philadelphia (PHL) to St. Louis (STL)
Ameristar Casino Resort and Spa

Ameristar Casino Resort and Spa

4.5 out of 5
per person
May 25 - Jun 1
found 1 day ago
Roundtrip non-stop flight included
Philadelphia (PHL) to St. Louis (STL)
Hilton St. Louis Airport

Hilton St. Louis Airport

3.5 out of 5
per person
May 25 - Jun 1
found 1 day ago
Roundtrip non-stop flight included
Philadelphia (PHL) to St. Louis (STL)
The Cheshire

The Cheshire

4 out of 5
per person
May 25 - Jun 1
found 1 day ago
Roundtrip non-stop flight included
Philadelphia (PHL) to St. Louis (STL)
Don't see what you're looking for?
See all available trips from Philadelphia Intl. to Lambert-St. Louis Intl.
View all trips

Frequently asked questions

Are there direct flights from Philadelphia Intl. Airport (PHL) to STL?
Sometimes, a trip is all about the journey; other times, it’s all about the destination. But if you’re eager to get to where you’re going fast, multiple airlines provide direct flights from Philadelphia Intl. Airport (PHL) to Lambert Field, including American Airlines and Southwest Airlines.
How long is the flight from Philadelphia Airport to St. Louis Lambert International Airport?
Flying from Philadelphia Intl. Airport (PHL) to Lambert-St. Louis Intl. Airport (STL) is easy as the flight normally takes 2 hours and 31 minutes. With so little time in the air, it’s highly likely that you’ll disembark the plane feeling as energetic as when you boarded.
What is the flight distance from PHL to Lambert-St. Louis Intl. Airport (STL)?
With a flight distance of just 810 mi, a newspaper or a podcast is all you’ll need to keep yourself amused from Philadelphia Airport to St. Louis Lambert International Airport. You’ll be disembarking the aircraft and diving headfirst into your exciting travel itinerary before you know it.
What airlines fly from Philadelphia Intl. Airport (PHL) to Lambert-St. Louis Intl. Airport (STL)?
If you’re going to St. Louis from Philadelphia, you’ll find a number of airlines that advertise direct flights. One of the most well-known is American Airlines (AA), which has 86 flights each month. You may want to also pore through the deals on offer from Southwest Airlines (WN). Another popular airline, it operates 30 flights monthly on the Philadelphia to St. Louis route. Be sure to compare the two airlines to find your ideal fare.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Flight information from Philadelphia to St. Louis

 

Traveling From
Philadelphia Intl.
Traveling To
Lambert-St. Louis Intl.
Shortest Flight Time
2 hours 25 mins
Earliest Departure Time
8:00AM EDT
Latest Departure Time
7:20PM EDT
Lowest Flight Price
$188

Route Info

Flight path for flights from Philadelphia International Airport to Lambert-St. Louis International Airport


Origin:
PHL - Philadelphia International Airport
Destination:
STL - Lambert-St. Louis International Airport
Distance:
816.00 miles


Airlines & Aircraft Used on PHL to STL Flight Routes


Airline Carrier
Aircraft
American Airlines
Aerospatiale/Alenia ATR 42-300 / 320
American Airlines
Airbus A319
American Airlines
Beechcraft 1900/1900C/1900D
American Airlines
Embraer 190
Jet Airways (India)
Airbus A330-300
Jet Airways (India)
Boeing 737-800 (winglets) pax
Jet Airways (India)
Boeing 737-900 pax
United Airlines
Canadair Regional Jet

Discover our best flights from Philadelphia PHL to St. Louis STL. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Philadelphia PHL to St. Louis STL at the right price  

Airfares to St. Louis STL from Philadelphia PHL currently cost between $188 and $211. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Philadelphia PHL to St. Louis STL 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Philadelphia PHL to St. Louis STL on Travelocity starting at $95. Prices and availability subject to change. Additional terms may apply. 

 

Get to St. Louis STL from Philadelphia PHL quicker with direct flights. 

Get to St. Louis faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to STL from PHL to take around 2 hour(s) 25 min(s).  

 

Find our cheapest airfares for flights from Philadelphia PHL to St. Louis STL

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to STL from PHL. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Philadelphia PHL to St. Louis STL today 

If you’re flexible about when you travel, April is usually the cheapest month to fly from Philadelphia PHL to St. Louis STL. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to St. Louis STL from Philadelphia PHL 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to STL from PHL have this option.  

 

Travel with confidence when you book flights to St. Louis STL from Philadelphia PHL with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.