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

Flights starting at £53. Choose between Frontier Airlines, United Airlines, or Spirit Airlines to find the best price.

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Tips to know when travelling to St. Louis

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Travelers usually depart from Phoenix Sky Harbor International, Phoenix–Mesa Gateway, Phoenix, AZ - Tufesa, or Phoenix, AZ - Sky Train Station when they travel from Phoenix to St. Louis. The most popular airlines for this route are Frontier Airlines, United Airlines, Spirit Airlines, Alaska Airlines, and Southern Airways Express. Phoenix and St. Louis have 201 direct flights per week.

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

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Southern Airways ExpressFDY9XYesNo

St. Louis travel tips

1) Enjoy a performance at the Fox Theatre in St. Louis
2) Taxis in St. Louis are quite expensive, avoid them if possible
3) Have an exact amount of money to pay for the buses in St. Louis

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
27 Feb
85%
26°C15°C
5 Mar
14°C4°C
Wednesday
28 Feb
4°C-2°C
6 Mar
73%
13°C6°C
Thursday
29 Feb
10°C-1°C
7 Mar
68%
19°C11°C
Friday
1 Mar
84%
13°C3°C
8 Mar
79%
19°C11°C
Saturday
2 Mar
20°C7°C
9 Mar
89%
9°C4°C
Sunday
3 Mar
24°C13°C
10 Mar
11°C0°C
Monday
4 Mar
81%
18°C9°C
11 Mar
16°C4°C

Frequently asked questions

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What time do nonstop (direct) flights between Phoenix and St. Louis depart?
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