Cheap flights from Denver, CO to St. Louis, MO

Flights starting at $23. Choose between United Airlines, Frontier Airlines, or Alaska Airlines to find the best price.

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The distance between Denver and St. Louis is 1236 km. The most popular airlines for this route are United Airlines, Frontier Airlines, Alaska Airlines, Spirit Airlines, and Sun Country Airlines. Denver and St. Louis have 90 direct flights per week.

Weekly direct flights

Discover the top airlines offering direct flights from Denver to St. Louis in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Sun 31.03 - Sat 06.04

AirlineSun 31.03Mon 01.04Tue 02.04Wed 03.04Thu 04.04Fri 05.04Sat 06.04
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Weekly direct flights for Sun 07.04 - Sat 13.04

AirlineSun 07.04Mon 08.04Tue 09.04Wed 10.04Thu 11.04Fri 12.04Sat 13.04
3333333
1111111

Weekly direct flights for Sun 14.04 - Sat 20.04

AirlineSun 14.04Mon 15.04Tue 16.04Wed 17.04Thu 18.04Fri 19.04Sat 20.04
3333333
1111111

Weekly direct flights for Sun 21.04 - Sat 27.04

AirlineSun 21.04Mon 22.04Tue 23.04Wed 24.04Thu 25.04Fri 26.04Sat 27.04
3333333
1111111

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

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

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

Thursday
4 Apr
87%
8°C2°C
11 Apr
85%
16°C10°C
Friday
5 Apr
13°C2°C
12 Apr
19°C7°C
Saturday
6 Apr
14°C2°C
13 Apr
26°C11°C
Sunday
7 Apr
86%
19°C7°C
14 Apr
23°C14°C
Monday
8 Apr
81%
25°C10°C
15 Apr
89%
15°C9°C
Tuesday
9 Apr
22°C12°C
16 Apr
22°C7°C
Wednesday
10 Apr
84%
13°C11°C
17 Apr
26°C11°C

Frequently asked questions

How long does it take to travel from Denver to St. Louis?
What is the flight distance between Denver and St. Louis?
What airlines offer nonstop (direct) flights between Denver and St. Louis?
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Which airports are there in Denver?
What airports are near Denver?
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Is it possible to combine flights, buses, and trains in one itinerary when traveling between Denver and St. Louis?
What is Virtual Interlining and how do I use it?
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The nearest countries with flights to St. Louis

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Other destination countries from Denver

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