Find Delta Air Lines(DL) flights from St. Louis to Tucson

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

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 Tucson 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.

The cheapest months to fly from St. Louis to Tucson is November, when demand for travel is lower.

After crunching the numbers on our December flight calendar, it's currently cheapest to fly from St. Louis to Tucson on December 20, 2025 with Frontier Airlines, with prices starting at €109.

You can land at any one of the following hubs in Tucson, with St. Louis Lambert International Airport to Tucson International Airport (STL-TUS) is by far the most common option on this route: Tucson International Airport (TUS) Davis–Monthan Air Force Base (DMA).

The time difference between Tucson and St. Louis is 1h.

Tickets can only be changed or canceled 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.