$56 Find Cheap Flights from St. Louis to Arizona - Compare and Save

The cheapest ticket to Arizona from St. Louis found in the last 5 days was to Phoenix, at $306 round-trip. The most popular route is from St. Louis (STL) to Phoenix Sky Harbor Intl Airport (PHX), and the cheapest round-trip airline ticket found on this route in the last 5 days was $306.

The cheapest time of day to fly to Arizona is generally at night, when round-trip flights cost $311 on average. Morning departures are around 14% more expensive than evening flights, on average. The most expensive time of day to fly to Arizona is generally in the morning, which is peak travel time and where the average cost of a ticket is $446.

No, with an average price for the route of $398, prices are generally cheapest when you fly direct.

The cheapest month for flights from St. Louis to Arizona is December, when tickets cost $40 (return) on average. On the other hand, the most expensive months are June and April, when the average cost of round-trip tickets is $210 and $177 respectively.

When flying from St. Louis to Arizona, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

To get a below average price on the flight from St. Louis to Arizona, you should book around 3 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

There are 3 airlines that fly nonstop from St. Louis to Arizona. They are: American Airlines, Frontier and Southwest. The cheapest price of all airlines flying this route was found with Frontier at $94 for a round-trip flight to Phoenix Sky Harbor Intl Airport (PHX). On average, Frontier offers the best prices for nonstop flights between St. Louis and Arizona.

St. Louis and Arizona are connected by different airlines. The airlines that fly that route the most regularly are Southwest (32 flights per week), American Airlines (14 flights per week), and Alaska Airlines (14 flights per week).

The duration of a flight to Arizona depends on your arrival airport. The shortest routes to Arizona from St. Louis are to Tucson, which takes 5h 06m, and Flagstaff, which takes 5h 06m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

The earliest flight from St. Louis to Arizona departs at 5:45 am, landing in Phoenix at 6:55 am.

If you prefer to fly at night, the latest flight from St. Louis to Arizona jets off at 9:45 pm and lands in Phoenix at 11:00 pm.