$201 Cheap American Airlines flights Grand Junction (GJT) to St. Louis (STL)

Landing cheap one-way American Airlines flights from GJT to STL from $201 on Expedia is a breeze — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $319 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

American Airlines flights to St. Louis are often more affordable in the off-peak months of January and February. Whether you’re searching for a round-trip or one-way ticket, you could score a better deal then.

To find cheap American Airlines fares from Grand Junction Regional Airport (GJT) to Lambert-St. Louis Intl. Airport (STL), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect how much you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct route from GJT to STL with American Airlines or another carrier, select the “Nonstop” filter when looking for tickets.

To find the earliest departure from GJT to STL with American Airlines, filter your results by “Early Morning” and “Morning.” Choosing an early flight generally means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Lambert-St. Louis Intl. Airport (STL) is the main St. Louis hub for American Airlines flights from Grand Junction Regional Airport (GJT).

Depending on the type of fare you purchased, a fee will generally apply if you cancel or reschedule your flight more than 24 hours after it’s confirmed. To secure plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you search for flights. To learn more about canceling or changing your reservation, visit “Trips,” select your flight and tick “Manage Booking.”