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

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

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Flights from Philadelphia (PHL) to St. Louis (STL)
Origin airport
Philadelphia Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
1298 km
Average flight time
1 hour 35 mins

Philadelphia to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Philadelphia to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Philadelphia to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is now!

Frequently asked questions

How long does it take to fly from Philadelphia Airport to STL?
With American Airlines, a direct flight takes around 2 hours and 37 minutes. Lock in a seat on the 7:06PM flight from Philadelphia Airport and reach Lambert-St. Louis Intl. Airport (STL) at 8:43PM. Score an awesome deal on this and other routes when you use Expedia to book your trip.
Is it cheaper to buy a plane ticket from Philadelphia Airport to Lambert-St. Louis Intl. Airport (STL) last minute?
Being spontaneous is an amazing way to discover the world, but it's not necessarily the wisest way to pick up a cheap airfare. Think about booking your PHL to Lambert Field journey well ahead of time rather than leaving it until the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Save all that spontaneity for when you get to your destination!
What airports do you fly into for St. Louis from Philadelphia?
With Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) and St. Louis Downtown Airport (CPS) to pick from, traveling from Philadelphia to St. Louis is a piece of cake. The city's main terminal, Lambert-St. Louis Intl. Airport (STL), is around 19 kilometers northwest of the downtown area. Besides the price of fares, consider factors like transportation options from the airport and the distance to your hotel when deciding where to fly into. Get your St. Louis adventure off to a superb start by discovering Busch Stadium and Gateway Arch.
What are the most popular departure times for flights from Philadelphia Airport to Lambert Field?
Between 7:00 PM - 8:00 PM is when you'll find the most American Airlines flights going from PHL to Lambert-St. Louis Intl. Airport (STL). Our handy tip? Leave earlier in the day. With air traffic yet to build up, your odds of traveling on a delay-free flight are higher.
Can I change the date of my flight from Philadelphia Intl. Airport (PHL) to Lambert Field?
Quickly make changes to your Philadelphia Airport to Lambert-St. Louis Intl. Airport (STL) flight through the Expedia Trips portal. But before you begin, browse the ticket rules in your itinerary to see what you can do and if fees apply. Some airlines charge a change fee per person, plus any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also stop by our Customer Service portal for more advice and to chat with our Virtual Agent.