Denver to Cahokia/St Louis (DEN–CPS) — Airlines, Schedules & Connections

DEN Airport Page →
781 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 15 1-stop flights Verified 4w ago
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 10 hubs
MSP Minneapolis 4h 34m AFCMDL → DL Minneapolis (MSP) to Cahokia/St Louis flights
PIT Pittsburgh ~4h 58m UAWN → Pittsburgh (PIT) to Cahokia/St Louis flights
HOU Houston ~5h 42m EJAWN → Houston (HOU) to Cahokia/St Louis flights
AUS Austin ~5h 43m ACDLF9 → Austin (AUS) to Cahokia/St Louis flights
PHX Phoenix ~6h AAACAS → Phoenix (PHX) to Cahokia/St Louis flights
IAH Houston ~6h 9m 8CACAV → UA Houston (IAH) to Cahokia/St Louis flights
LGA New York ~6h 32m DLUAWN → New York (LGA) to Cahokia/St Louis flights
FLL Fort Lauderdale ~6h 44m ADEJAUA → Fort Lauderdale (FLL) to Cahokia/St Louis flights
IAD Dulles ~7h 6m AVAZCM → SY Dulles (IAD) to Cahokia/St Louis flights
SJC San Jose ~7h 15m ACUAWN → San Jose (SJC) to Cahokia/St Louis flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Denver to Cahokia/St Louis
Connecting service available through multiple hubs.
1 Airlines 781 mi 1h 57m nonstop +1h ahead

DEN–CPS had nonstop service from Sun Country Airlines, last on the schedule in May 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 781 miles in 1h 57m.

Also explore DEN Routes CPS Routes DEN Live Flights CPS Live Flights DEN Delays
All flights from Cahokia/St Louis (CPS) Cahokia/St Louis to Denver flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop DEN–CPS service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
SY Sun Country Airlines 1 – – 63% – –
Alliance coverage
Unaffiliated: SY (1 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for DEN to CPS.
1-STOP
One-Stop Connections
15
Hubs
~4h
Fastest
~27h
Longest
MSP ~4h 34m PIT ~4h 58m HOU ~5h 42m AUS ~5h 43m PHX ~6h 0m
Verified with published schedule alignment and minimum connection time.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
DEN → CPS
63%
Moderate delays possible. Allow buffer time.
Departing
63%
Return
CPS → DEN
81%
Generally reliable. Most flights run on time.
Arriving
81%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. DEN delays →
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+1h
Cahokia/St Louis is 1 hour ahead of Denver.
DEN: MDT · CPS: CDT

When it's 6:00 PM in Denver, it's 7:00 PM in Cahokia/St Louis.
Distance & Flight Time
781 mi / 1,257 km
Nonstop flight time is approximately 1h 57m gate to gate.
Getting to DEN

RTD A Line commuter rail runs from Denver Union Station to the airport (37 min, $10.50). Trains depart every 15 minutes during peak hours. The airport is 25 miles northeast of downtown; ride-shares cost $35–55 and take 30–45 minutes depending on I-70 traffic.Economy parking in lots 4–6 connects via free shuttle. Mountain shuttle services depart from Jeppesen Terminal's Ground Transportation level.

Facts

DEN–CPS Quick Facts

Key statistics for the Denver to Cahokia/St Louis route.
Route details
Distance781 mi / 1,257 km
Flight time1h 57m
Time difference+1 hour
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: DEN
Full nameDenver International Airport
IATA / ICAODEN / KDEN
TimezoneAmerica/Denver
Passengers/yr82.4M
Elevation5,431 ft / 1,655 m
Destination: CPS
Full nameSt Louis Downtown Airport
IATA / ICAOCPS / KCPS
TimezoneAmerica/Chicago
Elevation413 ft / 126 m
FAQ

Frequently Asked Questions

Common questions about DEN to CPS flights.
Nonstop flights from Denver International Airport to St Louis Downtown Airport take about 1h 57m gate to gate. The route covers 781 miles.
1 airline operated the nonstop from DEN to CPS: Sun Country Airlines. The last scheduled nonstop was in May 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in May 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 1h 57m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Minneapolis–Saint Paul.
Cahokia/St Louis is 1 hour ahead of Denver.
Yes, return flights from CPS to DEN are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from DEN to CPS

Denver International Airport (DEN) and St Louis Downtown Airport (CPS) had nonstop service from Sun Country Airlines, last on the schedule in May 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

DEN to CPS Flight Duration and Schedule

Nonstop flight time from DEN to CPS is about 1 hours 57 minutes gate to gate. The route covers a distance of 781 miles (1,257 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Minneapolis–Saint Paul.