Denver to St. Louis Flights
Everything you need to know about the DEN → STL domestic route — flight time, airlines, fares, and booking tips. Track your flight in real time with TripTrack.
✈️ Route Overview
Key facts for the Denver to St. Louis route
🛫 Airlines on This Route
Carriers operating DEN → STL flights
| Airline | Notes |
|---|---|
| Delta | SkyMiles frequent flyer program |
| American Airlines | AAdvantage frequent flyer program |
| United | MileagePlus frequent flyer program |
| Southwest | Rapid Rewards — bags fly free |
| Alaska Airlines | Mileage Plan — generous earning rates |
| JetBlue | TrueBlue — free snacks, above-average legroom |
💡 Booking Tips
How to get the best deal on Denver to St. Louis flights
Best Days to Fly
Tuesday and Thursday tend to have lower demand and better fares
Fare Range
$80-$220 round trip. Book 3–6 weeks in advance for domestic routes, 2–3 months for international.
Red-Eye Flights
✗ Not available
No overnight options on this route — plan for daytime travel.
Track Your Flight
Once booked, TripTrack automatically imports your flight from your confirmation email. Real-time gate changes and delay alerts — no manual entry needed.
🧳 Travel Tips for This Route
Practical advice from frequent travelers on the DEN → STL route
- 1 Southwest Airlines does not charge bag fees on this route.
- 2 Midweek flights are typically less crowded and cheaper.
🏢 Airport Guides
Full terminal, transit, and traveler info for both airports
Track Your DEN → STL Flight — Automatically
TripTrack monitors your flight in real time — gate changes, delays, and departure updates sent to your phone the moment they happen. Connect your Gmail once and your trips appear automatically. No manual entry.
Frequently Asked Questions — Denver to St. Louis Flights
How long is the flight from Denver to St. Louis?
The average flight time from Denver (DEN) to St. Louis (STL) is 2h 10m. This is an estimate including taxi, climb, and descent time — actual flight time may vary based on winds and routing.
Which airlines fly from Denver to St. Louis?
Airlines operating the DEN to STL route include Delta, American Airlines, United and 3 more. Check each airline's website for current schedules and availability.
How far is Denver from St. Louis?
The great-circle distance from Denver to St. Louis is 768 miles (1,236 km). This is the straight-line distance — actual flight paths may be slightly longer.
What are the cheapest days to fly from Denver to St. Louis?
Tuesday and Thursday tend to have lower demand and better fares. Fares on this route typically range $80-$220 round trip.
Is there a time zone change flying from Denver to St. Louis?
Yes — there is a +1 hour when flying from Denver to St. Louis. TripTrack automatically shows local times for both your departure and arrival airports.
Are there red-eye flights from Denver to St. Louis?
No, there are currently no overnight (red-eye) flights on the DEN to STL route. All flights operate during daytime hours.
How can I track my Denver to St. Louis flight in real time?
TripTrack automatically tracks your DEN to STL flight — showing real-time gate changes, delays, and departure updates. Connect your Gmail once and your booking confirmation is imported automatically. Available free on iOS and Android.