CA $129 Cheap Flights from Philadelphia (PHL) to St. Louis (STL)

Featured airlines

Air Canada
Air Transat
WestJet
American Airlines
Flair Airlines
Philippine Airlines
Air India
Lufthansa
Caribbean Airlines

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Philadelphia (PHL) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $129 for one-way flights and CA $486 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu., Apr. 17 - Mon., Apr. 21
PHL
Philadelphia
STL
St. Louis
CA $486 Roundtrip, found 2 days ago
CA $486
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu., Apr. 17 from Philadelphia to St. Louis, returning Mon., Apr. 21, priced at CA $486 found 2 days ago
American Airlines
Thu., Apr. 17 - Mon., Apr. 21
PHL
Philadelphia
STL
St. Louis
CA $500 Roundtrip, found 2 days ago
CA $500
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu., Apr. 17 from Philadelphia to St. Louis, returning Mon., Apr. 21, priced at CA $500 found 2 days ago
Delta
Thu., Apr. 17 - Mon., Apr. 21
PHL
Philadelphia
STL
St. Louis
CA $506 Roundtrip, found 2 days ago
CA $506
Roundtrip
found 2 days ago
Select Delta flight, departing Thu., Apr. 17 from Philadelphia to St. Louis, returning Mon., Apr. 21, priced at CA $506 found 2 days ago
Delta
Tue., Mar. 4 - Wed., Mar. 5
PHL
Philadelphia
STL
St. Louis
CA $513 Roundtrip, found 5 days ago
CA $513
Roundtrip
found 5 days ago
Select Delta flight, departing Tue., Mar. 4 from Philadelphia to St. Louis, returning Wed., Mar. 5, priced at CA $513 found 5 days ago
American Airlines
Thu., Apr. 17 - Mon., Apr. 21
PHL
Philadelphia
STL
St. Louis
CA $514 Roundtrip, found 2 days ago
CA $514
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu., Apr. 17 from Philadelphia to St. Louis, returning Mon., Apr. 21, priced at CA $514 found 2 days ago
Delta
Thu., Apr. 17 - Mon., Apr. 21
PHL
Philadelphia
STL
St. Louis
CA $520 Roundtrip, found 2 days ago
CA $520
Roundtrip
found 2 days ago
Select Delta flight, departing Thu., Apr. 17 from Philadelphia to St. Louis, returning Mon., Apr. 21, priced at CA $520 found 2 days ago
American Airlines
Wed., Mar. 5 - Fri., Mar. 7
PHL
Philadelphia
STL
St. Louis
CA $528 Roundtrip, found 5 days ago
CA $528
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed., Mar. 5 from Philadelphia to St. Louis, returning Fri., Mar. 7, priced at CA $528 found 5 days ago
American Airlines
Fri., Feb. 28 - Tue., Mar. 4
PHL
Philadelphia
STL
St. Louis
CA $530 Roundtrip, found 3 days ago
CA $530
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri., Feb. 28 from Philadelphia to St. Louis, returning Tue., Mar. 4, priced at CA $530 found 3 days ago
American Airlines
Wed., Mar. 5 - Fri., Mar. 7
PHL
Philadelphia
STL
St. Louis
CA $530 Roundtrip, found 5 days ago
CA $530
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed., Mar. 5 from Philadelphia to St. Louis, returning Fri., Mar. 7, priced at CA $530 found 5 days ago
United
Wed., Mar. 5 - Fri., Mar. 7
PHL
Philadelphia
STL
St. Louis
CA $772 Roundtrip, found 5 days ago
CA $772
Roundtrip
found 5 days ago
Select United flight, departing Wed., Mar. 5 from Philadelphia to St. Louis, returning Fri., Mar. 7, priced at CA $772 found 5 days ago
Flight from Philadelphia to St. Louis (PHL - STL) route information
Origin airport
Philadelphia Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
CA $486
Distance
1298 km

Philadelphia to St. Louis Flights

Ready for an adventure? Thought so! Prepare to see the sights when you book your trip from Philadelphia to St. Louis with Expedia.ca. Whether you’re visiting for business or pleasure, we know how important it is to bring home travel stories. Maybe your tales will include the best dinner of your life, or the weirdest street art you saw in the city, or the concert that turned you into a fan of a new band. Whatever it is, your new favourite anecdote is right around the corner. Book your trip from PHL to STL and begin your journey!

Getting a cheap deal on your trip sets the tone for the perfect holiday. And with Expedia.ca, you know you can travel from Philadelphia to St. Louis on the cheap, with enough money left over for a stellar time in the city. That could mean more tours with the kids, more concerts with the spouse, more dessert amongst co-workers, or even front row seats to a sports game if you’re travelling solo. It’s your holiday! Make it great.

Travelling shouldn’t cost an arm and a leg before you even get to relax on the plane’s armrests. Count on Expedia.ca to get you the best discounts on flights from PHL to STL. And remember this: You can also save big when you bundle. Add a hotel or car rental deal to your flight and witness those savings add up. Hey, more money for more souvenirs, right? Right! Pack your bags and we’ll see you on the route.

Combine your St. Louis flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from with Expedia Canada. Use us as your top travel destination and have the confidence that you’re getting a bargain!

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 CA $486. 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.
*Available to Expedia members.