Cheap flights from St. Louis to San Juan from $319

Travelers frequently search for route combinations, such as St. Louis and Orlando, Las Vegas, Fort Lauderdale, Los Angeles, London, Cancún, Denver, Reno, Seattle, San Francisco, New York, Washington, D.C., Amsterdam, Medellín, Oakland, Burbank, Beirut, Calgary, Charlotte, Malta.

Travelers frequently search for route combinations, such as San Juan and Orlando, Philadelphia, Miami, Atlanta, Tampa, Charlotte, Chicago, Washington, D.C., Minneapolis, New York, Cleveland, Tortola, Raleigh, Saint Thomas, Detroit, Medellín, Fort Lauderdale, Cincinnati, Hartford, Denver.

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

The main airport in San Juan is Luis Muñoz Marín International. It is also served by Aguadilla Rafael Hernandez, Eugenio María de Hostos, Mercedita.

Currently, you can fly between St. Louis and San Juan with United Airlines, Southern Airways Express.

If you don’t have specific dates for your trip between St. Louis and San Juan, 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 San Juan, 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, General Wayne A. Downing Peoria International, MidAmerica St. Louis, Evansville Regional, Central Illinois Regional, Abraham Lincoln Capital, Cape Girardeau Regional, Barkley Regional, Williamson County Regional, Waynesville-St. Robert Regional

There are a number of airports in and around San Juan. The main one is Luis Muñoz Marín International and other nearby airports include Aguadilla Rafael Hernandez, Eugenio María de Hostos, Mercedita.