Popular airlines from Lambert-St. Louis International Airport (STL) to Philadelphia International Airport (PHL)
American AirlinesAmerican Airlines
DeltaDelta
Spirit AirlinesSpirit Airlines
UnitedUnited
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Cheap flights from St. Louis (STL) to Philadelphia (PHL)
Prices were available within the past 7 days and start at CA $74 for one-way flights and CA $204 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from St. Louis (STL) to Philadelphia (PHL)
October is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Lambert-St. Louis Intl. |
Destination airport | Philadelphia Intl. |
Airlines serving | American Airlines, Delta, Spirit Airlines, United |
Roundtrip price | CA $204 |
Distance | 1298 km |
Average flight time | 3 hours 13 mins |
St. Louis to Philadelphia Flights
The easy way to book your flights from St. Louis to Philadelphia
With Expedia, it’s simple to find and book flights to Philadelphia from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Philadelphia Intl., too.
Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from St. Louis to Philadelphia today, tomorrow, or this week.
Save dollars with cheap flights from Lambert-St. Louis Intl., STL to Philadelphia Intl., PHL
Sort your search results by price to find great deals on your flight from St. Louis to Philadelphia—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Philadelphia from St. Louis currently is just CA $204 rising to CA $1,071.
Here are more money-saving tips:
- Fly in August when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to Philadelphia
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!
Reasons to choose Expedia for your flight to Philadelphia from St. Louis
Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Philadelphia with Expedia today.
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