Departure
Scheduled departure: 2026-10-29 08:00 (UTC-04:00). Confirm airport transport and terminal opening hours in advance.
UA1666 Cincinnati Northern Kentucky International Airport to Denver International Airport nonstop flight: schedule, airports, aircraft and travel guide.
UA1666 Flight Overview
UA1666 is operated by United Airlines and connects Cincinnati Northern Kentucky International Airport (CVG) and Denver International Airport (DEN). Scheduled departure: 2026-10-29 08:00 (UTC-04:00); scheduled arrival: 2026-10-29 09:10 (UTC-06:00).
AirlineUnited Airlines
Flight numberUA1666
RouteCVG to DEN
Scheduled duration3 hr 10 min
Cincinnati / Covington to Denver Route Information
UA1666 is a nonstop flight from Cincinnati Northern Kentucky International Airport (CVG) to Denver International Airport (DEN). Use the information below to plan your journey.
Route distanceApprox. 1,721 km
Scheduled flight time3 hr 10 min
Time difference-120 min
Flight typenonstop
Arrival
Scheduled arrival: 2026-10-29 09:10 (UTC-06:00). Arrange pickup, hotel and onward transport for the arrival date.
Time zones
Departure: Cincinnati / Covington (UTC-04:00); arrival: Denver (UTC-06:00).
UA1666 On-time Performance & History
Methodology
100%Arrival on-time rate
Sample flights100 (flights)
Average departure delay14 min
Average arrival early15 min
Cancllation rate0%
Longest delay-
Early arrivals97%
Historical statistics are for reference only and do not predict future flight performance.
Aircraft, Cabin & Services
Based on currently published aircraft and cabin information; the operating aircraft may change.
Published aircraft type
Boeing 737MAX 9 Passenger
Economy 30 in; Business 37 in
Business 20 / 20 · Economy 159 / 159
37 in
Seat configuration depends on the operating aircraft
30 in
Availability and fees depend on the flight
UA1666 Airports
Terminals follow the published schedule; check official airline channels for same-day gates and operations.
CVGCincinnati Northern Kentucky International Airport
Cincinnati / Covington, United States · UTC-04:00
- Departure terminal
- Check-in counter
- Announced on the day
DENDenver International Airport
Denver · UTC-06:00
- Arrival terminal
- Baggage belt
- Announced on the day
Cincinnati Northern Kentucky International Airport Departure & Denver International Airport Arrival Guide
Departure date: 2026-10-29. Terminal and arrival information helps plan your journey.
Departing from Cincinnati Northern Kentucky International Airport
UA1666 is scheduled to depart from . Allow time for international check-in, baggage drop, security and immigration.
Arriving at Denver International Airport
Scheduled arrival is at . After immigration, take the MRT, taxi, ride-hailing service or airport bus to the city.
Planning your arrival
Scheduled arrival: 2026-10-29 09:10. Use the arrival date when booking hotels and pickup services.
Flight Changes, Cancellations & Missed Flights
If the schedule or aircraft changes, follow the booking channel and operating carrier rules.
Schedule changes
After an airline or booking-platform notice, confirm the new date, terminal and connecting transport.
Cancellation and changes
Refund, rebooking and involuntary-change rules depend on the booking channel, fare conditions and airline notice.
Missed flight
If you may not reach the airport on time, contact the booking channel or airline quickly to protect later sectors.
Check-in, Baggage & Entry Tips
International check-in deadlines, baggage allowance and entry requirements may vary by fare and traveller.
Arrive early for check-in
Arrive at least 3 hours before departure. Counter opening times and online check-in rules follow Cincinnati Northern Kentucky International Airport guidance.
Check baggage allowance
Checked and carry-on baggage allowances depend on cabin, fare rules and membership tier. See the baggage terms in your booking.
Prepare entry documents
Before departure, check passport validity, visa or visa-free eligibility, andDenver International Airport’ latest arrival declaration requirements.
What should I check before flying UA1666?
Check the departure date
For an overnight flight, check the departure date on your ticket and plan airport transport in advance.
Confirm the operating carrier
Follow the airline rules shown in your booking for check-in and checked baggage.
Check boarding information
Gates and operating times may change; follow airline notices and airport displays.
Popular route recommendations
UA1666 Frequently Asked Questions
Which airline operates this flight?
UA1666 is operated by United Airlines.
Where does it depart and arrive?
Cincinnati Northern Kentucky International Airport (CVG) → Denver International Airport (DEN).
What are the departure and arrival times?
Scheduled departure 08:00, arrival 09:10 · 3 hours 10 minutes.
Which terminal is used for check-in?
Departure terminal No data, arrival terminal No data. Check-in, gate and baggage belt are announced on the day.
Are meals and inflight entertainment available?
Meals: Free snacks on flights over 300 miles; food and alcohol for purchase in economy. Inflight entertainment: On-demand entertainment.
Explore This Route
Departure airportFlights from Cincinnati Northern Kentucky International Airport
Arrival airportDenver International Airport information
Operating airlineUnited Airlines information