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

Flights starting at £42. Choose between United Airlines, Frontier Airlines, or Southern Airways Express to find the best price.

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Tips to know when travelling to Denver

Book your trip to arrive at Denver International, or Rocky Mountain Metropolitan Airport. The distance between St. Louis and Denver is 1236 km. The most popular airlines for this route are United Airlines, Frontier Airlines, Southern Airways Express, Sun Country Airlines, and Iberia Airlines. St. Louis and Denver have 66 direct flights per week.

Weekly direct flights

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

Weekly direct flights for Mon 11.03 - Sun 17.03

AirlineMon 11.03Tue 12.03Wed 13.03Thu 14.03Fri 15.03Sat 16.03Sun 17.03
3353233
1111---11

Weekly direct flights for Mon 18.03 - Sun 24.03

AirlineMon 18.03Tue 19.03Wed 20.03Thu 21.03Fri 22.03Sat 23.03Sun 24.03
3333333
1111111

Weekly direct flights for Mon 25.03 - Sun 31.03

AirlineMon 25.03Tue 26.03Wed 27.03Thu 28.03Fri 29.03Sat 30.03Sun 31.03
3333333
1111111

Weekly direct flights for Mon 01.04 - Sun 07.04

AirlineMon 01.04Tue 02.04Wed 03.04Thu 04.04Fri 05.04Sat 06.04Sun 07.04
3333333
1111111

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

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Southern Airways ExpressFDY9XYesNo
Sun Country AirlinesSCXSYYesNo
Iberia AirlinesIBEIBYesOpens 24 days before flight
Closes 3 hours before flight

Denver travel tips

1) Follow the steps of the Beatles in Denver
2) Eat some hand-made food at Denver Central Market
3) Going picnicking in Denver or just shopping at Cooks Fresh Market, try their sandwiches

Weather in Denver

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January4°C-6°C
February4°C-6°C
March10°C-2°C
April13°C1°C
May18°C6°C
June26°C12°C
July29°C16°C
August28°C15°C
September25°C11°C
October17°C4°C
November10°C-1°C
December4°C-6°C
Hottest Month
29°C
July
Coldest month
-6°C
January
Sunny days
260
days per year
Snow days
26
days per year

14 day forecast

Thursday
14 Mar
99%
0°C0°C
21 Mar
18°C7°C
Friday
15 Mar
85%
2°C0°C
22 Mar
76%
11°C7°C
Saturday
16 Mar
84%
4°C-3°C
23 Mar
18°C6°C
Sunday
17 Mar
87%
7°C2°C
24 Mar
60%
20°C9°C
Monday
18 Mar
13°C1°C
25 Mar
88%
14°C7°C
Tuesday
19 Mar
16°C4°C
26 Mar
72%
12°C7°C
Wednesday
20 Mar
16°C6°C
27 Mar
10°C5°C

Frequently asked questions

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