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Good to Know: Flights to DEN
Useful information for finding cheap flights to Denver International and booking your next trip
Cheapest Round Trip Flight
$318
American Airlines• 1 stop • 9h 11mFeb 12 – Feb 16
The cheapest round trip flight from Lambert St Louis International to Denver International is currently $318
Cheapest One way Flight
$483
Alaska Airlines• 1 stop• 44h 18mNov 27
The cheapest one way flight from Ontario International to Denver International is currently $483
Cheapest Direct Flight
$318
Southwest Airlines• nonstop• 3h 45mFeb 12
The cheapest nonstop flight from Lambert St Louis International to Denver International is currently $318
Fastest Flight
3h 30m
The fastest nonstop flight from Ontario International to Denver International takes 3h 30m
Best Flight Deals to Denver
Identify the most efficient round-trip flights to Denver. We present options balancing cost and convenience for your return journey.
Feb 12 - Feb 16, Economy
St Louis → Denver
9h 11m
1:36 PM - 8:02 PM • 1 stop
St Louis → Denver
8h 45m
11:50 AM - 7:30 PM • 1 stop
American Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
18h 40m
12:50 PM - 11:10 PM • 1 stop
St Louis → Denver
13h 35m
5:15 AM - 2:30 PM • 2 stops
Southwest Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
18h 25m
2:05 PM - 12:10 AM • 1 stop
St Louis → Denver
12h 10m
6:00 AM - 2:30 PM • 1 stop
Southwest Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
10h 45m
1:20 PM - 7:05 PM • 1 stop
St Louis → Denver
16h 55m
7:55 PM - 7:10 AM • 1 stop
Southwest Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
12h 30m
1:20 PM - 8:10 PM • 1 stop
St Louis → Denver
16h 55m
7:55 PM - 7:10 AM • 1 stop
Southwest Airlines
For travel requiring no set return, access available one-way flights to Denver (DEN). These options support extended stays or open-ended plans.
Need to travel to Denver soon? View current last-minute flight options to DEN for spontaneous or pressing plans.
Maximize your time in Denver, not in transit. Discover non-stop direct flights to DEN for the quickest, most straightforward journey to the Strip.
Feb 12 - Feb 16, Economy
St Louis → Denver
3h 45m
10:15 PM - 11:40 PM • nonstop
St Louis → Denver
3h 32m
6:50 AM - 10:02 AM • nonstop
Southwest Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
3h 45m
6:50 PM - 8:15 PM • nonstop
St Louis → Denver
3h 25m
11:10 AM - 2:15 PM • nonstop
Southwest Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
3h 54m
6:00 PM - 7:34 PM • nonstop
St Louis → Denver
3h 35m
6:20 AM - 9:35 AM • nonstop
United Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
3h 45m
4:35 PM - 6:00 PM • nonstop
St Louis → Denver
3h 25m
7:45 AM - 10:50 AM • nonstop
Southwest Airlines
Feb 12 - Feb 16, Economy
St Louis → Denver
3h 55m
5:35 AM - 7:10 AM • nonstop
St Louis → Denver
3h 20m
1:20 PM - 4:20 PM • nonstop
Southwest Airlines
Destination Airport Information
| IATA Code | DEN |
| Name | Denver International |
| City | Denver |
| Country | US |
| Latitude | 39.861698150634766 |
| Longitude | -104.6729965209961 |
Popular Airlines
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