Cheap flights from St. Louis to Harlingen (STL - HRL) from $357

Departing on a Monday is a good option for securing a great price. You can expect to save up to 90% when planning your travel around this day of the week.

Flights from St. Louis to Harlingen, Texas lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to Harlingen, Texas in January, with the cheapest ticket starting at $345.

Unlike in the evening, when flights are generally more expensive, you can save up to 28% on flights from St. Louis to Harlingen, Texas by exploring options for tickets in the afternoon.

American Airlines and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Yes, there are multiple flights from St. Louis to Harlingen, Texas for under $400. The cheapest flight booked recently is on American Airlines for just $357, but on average you can expect to pay $553.

American Airlines, at $357, was found to be the cheapest airline from St. Louis to Harlingen, Texas. An alternate airline flying to your destination would be United Airlines. American Airlines is 24% cheaper than the average price of flights available within the next 90 days to this destination.

While on average a flight from St. Louis to Harlingen, Texas is generally $298, our data shows the cheapest flight currently is $173. When looking at the most popular route, (Lambert-St Louis - Harlingen Valley Intl), you can expect to pay $378 for that flight.

This is defined as Lambert-St Louis Airport (STL) and Harlingen Valley Intl Airport (HRL). Codes like Harlingen Valley Intl Airport are often used to just call airports uniquely.