Cheap Flights from St. Louis to McAllen from S$ 398

Frequently Asked Questions

• Which airlines offer the cheapest flights from St. Louis to McAllen?

  Based on Trip.com data, American Airlines offers Cheapest nonstop one-way flights from S$ 398 (for example, STL–MFE on Fri, Oct 23). For a Cheapest nonstop return flight, American Airlines offers fares from S$ 512, departing on Fri, Oct 23 and returning on Tue, Oct 27.

• Which airlines offer flights from St. Louis to McAllen?

  At the moment, several airlines serve connecting flights from St. Louis to McAllen, including: United Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from St. Louis to McAllen?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from St. Louis to McAllen is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from St. Louis to McAllen?

  Here are some tips for finding the best flight deals from St. Louis to McAllen on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Fri, Oct 23, with one-way fares from just S$ 398.
  · Compare airlines. American Airlines currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. July is generally the busiest month for travel to McAllen.
  · Get exclusive promo codes on the Trip.com app.

• When is the best time to book a flight from St. Louis to McAllen to get the best price?

  The cheapest month to book a flight from St. Louis to McAllen is usually September, when demand is lower.

• Which upcoming date is the cheapest for flights from St. Louis to McAllen?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from St. Louis to McAllen on October 23, 2026 with American Airlines, with prices starting at S$ 398.

• Which airports should you choose for flights from St. Louis to McAllen?

  Flights to McAllen can arrive at: McAllen International Airport (MFE). The most common route connects St. Louis Lambert International Airport and McAllen International Airport (STL–MFE).

• What is the time difference between St. Louis and McAllen?

  The time difference between McAllen and St. Louis is 0m.

• How can I change or cancel my flight ticket from St. Louis to McAllen?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from St. Louis to McAllen?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from St. Louis to McAllen is S$ 494. Fares vary by travel date, airline and availability.

• How do I book flights from St. Louis to McAllen on Trip.com?

  Enter St. Louis and McAllen, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.