Cheap flights from St. Louis to Philadelphia from $53

Travelers frequently search for route combinations, such as St. Louis and Las Vegas, Cancún, Orlando, Los Angeles, San Francisco, Denver, Mexico City, Tuxtla Gutiérrez, Toronto, Ottawa, Lima, Buenos Aires, Cali, Sydney, Warsaw, San José, Washington, D.C., Reykjavik, Fort Lauderdale, Melbourne.

Travelers frequently search for route combinations, such as Philadelphia and Atlanta, Orlando, Fort Lauderdale, Mexico City, Dallas, Chicago, Tampa, Miami, Los Angeles, Nashville, Detroit, Charlotte, Boston, Santo Domingo, Denver, Houston, Las Vegas, San Juan, Monterrey, Guadalajara.

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, Abraham Lincoln Capital, MidAmerica St. Louis, Evansville Regional, General Wayne A. Downing Peoria International, Columbia Regional, Central Illinois Regional, Cape Girardeau Regional, Quincy Regional, Waynesville-St. Robert Regional.

The main airport in Philadelphia is Philadelphia International. It is also served by John F. Kennedy International, Newark Liberty International, Washington Dulles International, Baltimore–Washington International, LaGuardia, Atlantic City International, New York Stewart International Airport, Westchester County, Long Island MacArthur, Ronald Reagan Washington National.

Currently, you can fly between St. Louis and Philadelphia with United Airlines, Frontier Airlines, Alaska Airlines, WestJet, Air Canada.

If you don’t have specific dates for your trip between St. Louis and Philadelphia, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between St. Louis and Philadelphia, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around St. Louis. The main one is St. Louis Lambert International and other nearby airports include St. Louis Lambert International, Abraham Lincoln Capital, MidAmerica St. Louis, Evansville Regional, General Wayne A. Downing Peoria International, Columbia Regional, Central Illinois Regional, Cape Girardeau Regional, Quincy Regional, Waynesville-St. Robert Regional

There are a number of airports in and around Philadelphia. The main one is Philadelphia International and other nearby airports include John F. Kennedy International, Newark Liberty International, Washington Dulles International, Baltimore–Washington International, LaGuardia, Atlantic City International, New York Stewart International Airport, Westchester County, Long Island MacArthur, Ronald Reagan Washington National.