Cheap flights from Pittsburgh to St. Louis from $146

Travelers frequently search for route combinations, such as Pittsburgh and New York, Orlando, Fort Lauderdale, New Orleans, Los Angeles, Fort Myers, Providence, Denver, Jacksonville, Charleston, Tampa, Tel Aviv, Dallas, Hartford, Bogotá, Atlanta, Nashville, Las Vegas, London, Sarasota.

Travelers frequently search for route combinations, such as St. Louis and Denver, Orlando, Las Vegas, Los Angeles, London, Dallas, Fort Lauderdale, Bogotá, Mexico City, Tokyo, Frankfurt, Cebu, San Francisco, Athens, Amsterdam, Naples, Cancún, Portland, Washington, D.C., San Diego.

Pittsburgh is mainly served by Pittsburgh International. But there are other airports nearby, including Allegheny County Airport.

The main airport in Pittsburgh is Pittsburgh International. It is also served by Cleveland Hopkins International, Akron–Canton, North Central West Virginia, Erie International, Altoona–Blair County, Hagerstown Regional, Bradford Regional, University Park, DuBois Regional, Johnstown–Cambria County.

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

Currently, you can fly between Pittsburgh and St. Louis with United Airlines, Frontier Airlines, Spirit Airlines, Southern Airways Express, Allegiant Air.

If you don’t have specific dates for your trip between Pittsburgh and St. Louis, 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 Pittsburgh and St. Louis, 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 Pittsburgh. The main one is Pittsburgh International and other nearby airports include Cleveland Hopkins International, Akron–Canton, North Central West Virginia, Erie International, Altoona–Blair County, Hagerstown Regional, Bradford Regional, University Park, DuBois Regional, Johnstown–Cambria County