$40 Cheap flights from Philadelphia Intl. to Lambert-St. Louis Intl. (PHL to STL)

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

Amazing PHL to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $63 round trip and $40 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Jun 19 - Wed, Jun 19
PHL
Philadelphia
STL
St. Louis
$63 Roundtrip, found 3 days ago
$63
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Jun 19 from Philadelphia to St. Louis, returning Wed, Jun 19, priced at $63 found 3 days ago
Wed, Jun 19 - Wed, Jun 19
PHL
Philadelphia
STL
St. Louis
$78 Roundtrip, found 5 days ago
$78
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Jun 19 from Philadelphia to St. Louis, returning Wed, Jun 19, priced at $78 found 5 days ago
Wed, Jun 12 - Mon, Jun 17
PHL
Philadelphia
STL
St. Louis
$80 Roundtrip, found 4 days ago
$80
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Jun 12 from Philadelphia to St. Louis, returning Mon, Jun 17, priced at $80 found 4 days ago
Sat, Jun 22 - Sat, Jun 22
PHL
Philadelphia
STL
St. Louis
$83 Roundtrip, found 1 hour ago
$83
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Jun 22 from Philadelphia to St. Louis, returning Sat, Jun 22, priced at $83 found 1 hour ago
Wed, Jun 12 - Wed, Jul 3
PHL
Philadelphia
STL
St. Louis
$83 Roundtrip, found 4 days ago
$83
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Jun 12 from Philadelphia to St. Louis, returning Wed, Jul 3, priced at $83 found 4 days ago
Mon, Sep 30 - Sat, Oct 5
PHL
Philadelphia
STL
St. Louis
$86 Roundtrip, found 3 days ago
$86
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Sep 30 from Philadelphia to St. Louis, returning Sat, Oct 5, priced at $86 found 3 days ago
Sat, Jun 22 - Wed, Jun 26
PHL
Philadelphia
STL
St. Louis
$88 Roundtrip, just found
$88
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jun 22 from Philadelphia to St. Louis, returning Wed, Jun 26, priced at $88 just found
Mon, Jul 8 - Fri, Jul 12
PHL
Philadelphia
STL
St. Louis
$92 Roundtrip, found 4 days ago
$92
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Jul 8 from Philadelphia to St. Louis, returning Fri, Jul 12, priced at $92 found 4 days ago
Fri, Jun 7 - Tue, Jun 11
PHL
Philadelphia
STL
St. Louis
$94 Roundtrip, found 16 hours ago
$94
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, Jun 7 from Philadelphia to St. Louis, returning Tue, Jun 11, priced at $94 found 16 hours ago
Fri, Jun 7 - Tue, Jun 11
PHL
Philadelphia
STL
St. Louis
$95 Roundtrip, found 16 hours ago
$95
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, Jun 7 from Philadelphia to St. Louis, returning Tue, Jun 11, priced at $95 found 16 hours ago

Flight Schedule for PHL to STL

CarrierFlightDepart PHLArrive STLFri
5/24		Sat
5/25		Sun
5/26		Mon
5/27		Tue
5/28		Wed
5/29		Thu
5/30		Stops
AA227508:51 am10:29 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
F9218110:53 am00:20 pmCheck FareCheck Fare
-
Check Fare
-
Check Fare
-
0 Stops
AA257107:11 pm08:55 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Best Lambert-St. Louis Intl. Flight and Hotel Packages

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

Price found within the past 48 hours. Click for updated prices.
River City Casino & Hotel

River City Casino & Hotel

4 out of 5
per person
Jun 29 - Jul 2
Roundtrip 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
Jun 29 - Jul 2
Roundtrip flight included
Philadelphia (PHL) to St. Louis (STL)
The Pennywell St.Louis Downtown, a Hilton Hotel

The Pennywell St.Louis Downtown, a Hilton Hotel

4 out of 5
per person
Jun 29 - Jul 2
Roundtrip flight included
Philadelphia (PHL) to St. Louis (STL)
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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.

 

Traveling From
Philadelphia Intl.
Traveling To
Lambert-St. Louis Intl.
Shortest Flight Time
2 hours 20 mins
Earliest Departure Time
8:51AM EDT
Latest Departure Time
7:15PM EDT
Lowest Flight Price
$63

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 $63 and $95. 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 $40. 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) 20 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, June 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.