Book United St. Louis to Denver flight deals from $137

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Search flights from St. Louis to Denver (STL - DEN)

October

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Friday 12th

Return Saturday 27th
from$ 147*Viewed: 2 hours ago

Tuesday 16th

Return Wednesday 31st
from$ 157*Viewed: 2 hours ago

Friday 19th

Return Saturday 3rd
from$ 137*Viewed: 2 hours ago

November

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Thursday 8th

Return Friday 23rd
from$ 186*Viewed: 2 hours ago

Tuesday 13th

Return Wednesday 28th
from$ 157*Viewed: 2 hours ago

Wednesday 14th

Return Thursday 29th
from$ 157*Viewed: 2 hours ago

December

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Sunday 9th

Return Monday 24th
from$ 206*Viewed: 2 hours ago

Wednesday 19th

Return Thursday 3rd
from$ 223*Viewed: 2 hours ago

Monday 24th

Return Monday 7th
from$ 197*Viewed: 1 day ago
**Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply..
A view of the Rocky Mountains from the vantage point of a body of water surrounded by trees and a grassy hill

Plan ahead for flights from St. Louis to Denver

from
to
Type
Dates
Price*
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Fri 19 Oct 2018
Return Sat 3 Nov 2018
from$ 137*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Fri 12 Oct 2018
Return Sat 27 Oct 2018
from$ 147*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Tue 2 Oct 2018
Return Wed 17 Oct 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Wed 3 Oct 2018
Return Thu 18 Oct 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Tue 9 Oct 2018
Return Wed 24 Oct 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Wed 10 Oct 2018
Return Thu 25 Oct 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Tue 16 Oct 2018
Return Wed 31 Oct 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Wed 24 Oct 2018
Return Thu 8 Nov 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Tue 13 Nov 2018
Return Wed 28 Nov 2018
from$ 157*Viewed: 2 hours ago
St. Louis (STL)
to Denver (DEN)
Roundtrip
Depart Wed 14 Nov 2018
Return Thu 29 Nov 2018
from$ 157*Viewed: 2 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.