Cheap flights from Trenton to St. Louis from $159

Travelers frequently search for route combinations, such as Trenton and Orlando, Tampa, Atlanta, Philadelphia, Fort Myers, Missoula, Warsaw, Algiers, Tallinn, Ahmedabad, Detroit, Cedar Rapids, Munich, Tallahassee, Tehran, Ho Chi Minh City, Islip, Lagos, Mobile, Mashhad.

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.

The main airport in Trenton is Trenton–Mercer. It is also served by Newark Liberty International, Philadelphia International, Baltimore–Washington International, LaGuardia, Ronald Reagan Washington National, New York Stewart International Airport, Atlantic City International, Tweed New Haven, Lehigh Valley International, Long Island MacArthur.

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

Currently, you can fly between Trenton and St. Louis with Frontier Airlines, Air Canada, Porter Airlines, WestJet, Allegiant Air.

If you don’t have specific dates for your trip between Trenton 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 Trenton 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 Trenton. The main one is Trenton–Mercer and other nearby airports include Newark Liberty International, Philadelphia International, Baltimore–Washington International, LaGuardia, Ronald Reagan Washington National, New York Stewart International Airport, Atlantic City International, Tweed New Haven, Lehigh Valley International, Long Island MacArthur

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, MidAmerica St. Louis, Columbia Regional, General Wayne A. Downing Peoria International, Evansville Regional, Abraham Lincoln Capital, Waynesville-St. Robert Regional, Central Illinois Regional, Cape Girardeau Regional, Quincy Regional.