Cheap flights from St. Louis to Harlingen from $162

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

Travelers frequently search for route combinations, such as Harlingen and Chicago, Savannah, Anchorage, West Palm Beach, Little Rock, Sioux Falls, Providence, Oklahoma City, Fayetteville, Fresno, Allentown, Milwaukee, Rochester, Dallas, Miami, Lexington, Chattanooga, Punta Gorda, Madison, Fort Lauderdale.

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

The main airport in Harlingen is Valley International. It is also served by General Lucio Blanco International, McAllen Miller International, Brownsville/South Padre Island International, Matamoros International, Nuevo Laredo International, Laredo International, Valley International, Corpus Christi International.

Currently, you can fly between St. Louis and Harlingen with United Airlines.

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

There are a number of airports in and around Harlingen. The main one is Valley International and other nearby airports include General Lucio Blanco International, McAllen Miller International, Brownsville/South Padre Island International, Matamoros International, Nuevo Laredo International, Laredo International, Valley International, Corpus Christi International.