Cheap flights from St. Louis to Arizona from $81

The month of January is, on average, the cheapest month to fly to Arizona from St. Louis, with most prices found around $348. If you aren’t able to travel to Arizona during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $362.

On average, the least expensive day to fly to Arizona from St. Louis is on a Monday. momondo users have found tickets for Monday departures for as low as $428. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Arizona is Sunday, with ticket prices averaging around $518.

Our most recent data shows that the best time of day to fly to Arizona is in the evening. Flights from St. Louis to Arizona during this time can be as low as $336. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $492 on average. Flights to Arizona from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Lambert-St Louis to Phoenix Sky Harbor Intl for the best Lambert-St Louis - Arizona flight prices

You are more likely to see cheaper flights to Arizona from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Arizona for around $400 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Arizona from St. Louis for as low as $364 on momondo.

There are 4 cabin classes available to choose from on St. Louis to Arizona flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

American Airlines, Southwest, and United Airlines are the most popular carriers operating from Lambert-St Louis to Arizona

Southwest, American Airlines and Frontier are the top three most popular airlines that fly to Arizona from St. Louis according to our data. Southwest is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Arizona. Keep in mind that there are 5 different airlines that fly to Arizona on a routine basis, so you have a few additional options to choose from.

7 flights are operational daily from St. Louis to Arizona as of November 2026. The most popular departure time for this route is 2:00PM, with 50% of flights per day taking off in the afternoon.

The number of flights available between St. Louis and Arizona is 50 per week as of November 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.