₩238,300 Cheap Flights from Philadelphia (PHL) to St. Louis (STL)

View ₩238,300 flight on Thu, Oct 23, 2025Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Philadelphia to St. Louis (PHL-STL)

Prices were available within the past 7 days and start at ₩238,300 for one-way flights and ₩476,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩476,500 Roundtrip, found 1 day ago
₩476,500
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩476,500 found 1 day ago
United
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩501,900 Roundtrip, found 1 day ago
₩501,900
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩501,900 found 1 day ago
Delta
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩512,000 Roundtrip, found 1 day ago
₩512,000
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩512,000 found 1 day ago
Delta
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩525,800 Roundtrip, found 1 day ago
₩525,800
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩525,800 found 1 day ago
United
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩527,100 Roundtrip, found 1 day ago
₩527,100
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩527,100 found 1 day ago
United
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩537,300 Roundtrip, found 1 day ago
₩537,300
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩537,300 found 1 day ago
American Airlines
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩547,300 Roundtrip, found 1 day ago
₩547,300
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩547,300 found 1 day ago
United
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩551,100 Roundtrip, found 1 day ago
₩551,100
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩551,100 found 1 day ago
American Airlines
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩553,900 Roundtrip, found 1 day ago
₩553,900
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩553,900 found 1 day ago
American Airlines
Thu, Oct 23 - Mon, Oct 27
PHL
Philadelphia
STL
St. Louis
₩561,100 Roundtrip, found 1 day ago
₩561,100
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 23 from Philadelphia to St. Louis, returning Mon, Oct 27, priced at ₩561,100 found 1 day ago

Find the cheapest month to fly from Philadelphia (PHL) to St. Louis (STL)

February is typically the cheapest month to fly

From ₩166,455 - ₩578,665 per traveler.

Frequently asked questions

How much is a flight from Philadelphia Airport to STL?
Based on fares available within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from PHL to St. Louis Lambert International Airport start from ₩476,500. Make your booking ASAP to secure the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Philadelphia Intl. Airport (PHL) to Lambert-St. Louis Intl. Airport (STL)?
The majority of flights can be conveniently canceled online, but whether or not you incur a fee varies between airlines. If you do have to cancel your break, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Philadelphia Intl. Airport (PHL) to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for PHL to STL flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Philadelphia Intl. Airport (PHL) to Lambert Field?
The flight distance from PHL (PHL) to Lambert-St. Louis Intl. Airport (STL) (STL) is 1,300 kilometers. You'll be disembarking the plane and grabbing your baggage from the carousel before long.
Which airlines fly direct from Philadelphia Airport to STL?
With 56 monthly flights operating from Philadelphia Airport to STL, Southwest Airlines (WN) is a popular choice. You could also take a look at the fares on offer with American Airlines (AA). It operates 30 monthly flights between Philadelphia and St. Louis.
Are PHL to Lambert Field flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so it's no sure thing. While last-minute deals between Philadelphia Intl. Airport (PHL) and STL are possible, it's also a good idea to keep track of prices well before you fly. In fact, some air carriers release their prices up to 12 months prior to the departure date. Expedia is continuously updating the best airfare bargains around, so check back often and be ready to lock in your seat when the price is right.

Travel information

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
₩476,500
Distance
1298 km
Average flight time
1 hour 31 mins

Book with confidence

Book with confidence

Philadelphia to St. Louis Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Philadelphia to St. Louis will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring St. Louis.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with PHL to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Philadelphia for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to STL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Philadelphia to St. Louis Flights

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