Cheap flights from Phoenix, AZ to St. Louis, MO

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Tips to know when travelling to St. Louis

Travelers usually depart from Phoenix Sky Harbor International, or Phoenix–Mesa Gateway when they travel from Phoenix to St. Louis. The most popular airlines for this route are United Airlines, and Sun Country Airlines. Phoenix and St. Louis have 40 direct flights per week.

Check-in for a flight from Phoenix to St. Louis

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUAYes
Sun Country AirlinesSCXSYYes

Weather in St. Louis

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January3°C-3°C
February6°C-2°C
March13°C3°C
April18°C8°C
May24°C14°C
June29°C19°C
July31°C21°C
August30°C20°C
September27°C16°C
October20°C10°C
November12°C3°C
December7°C0°C
Hottest Month
31°C
July
Coldest month
-3°C
January
Sunny days
261
days per year
Snow days
9
days per year

14 day forecast

Tuesday
11 Jun
27°C13°C
18 Jun
84%
29°C21°C
Wednesday
12 Jun
30°C16°C
19 Jun
88%
24°C21°C
Thursday
13 Jun
73%
35°C19°C
20 Jun
88%
28°C20°C
Friday
14 Jun
77%
29°C21°C
21 Jun
79%
30°C22°C
Saturday
15 Jun
28°C17°C
22 Jun
85%
31°C22°C
Sunday
16 Jun
35°C19°C
23 Jun
83%
33°C23°C
Monday
17 Jun
83%
31°C22°C
24 Jun
34°C24°C

Frequently asked questions

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