Raleigh/Durham to Denver (RDU-DEN): nonstop flights and who flies them

United Airlines and Frontier Airlines fly nonstop between Raleigh/Durham (RDU) and Denver (DEN), roughly 20 times a week. The timetable below shows the nonstop scheduled at 3h 50m to 4h 11m for the 1,434 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

See RDU to DEN on the interactive map Get started free
20
Flights a week, 4-week average
3h 50m to 4h 11m
Scheduled flight time
1,434 mi
Nonstop distance
Free
To get started

Raleigh/Durham to Denver flight schedule

Scheduled nonstop departures for RDU to DEN starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Raleigh/Durham (RDU) to Denver (DEN)
Date Flight Airline Departs RDU Arrives DEN Duration Aircraft
UA 741United Airlines08:1510:053h 50mBoeing 737-800
F9 2225Frontier Airlines12:1814:224h 4mAirbus A320neo
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
UA 741United Airlines08:1510:053h 50mBoeing 737-800
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
F9 2225Frontier Airlines19:3721:434h 6mAirbus A321neo family
UA 741United Airlines08:1510:053h 50mBoeing 737-800
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
F9 2225Frontier Airlines17:1919:234h 4mAirbus A320neo
UA 1475United Airlines08:0010:054h 5mBoeing 737-800
F9 2225Frontier Airlines12:1814:224h 4mAirbus A320neo
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
UA 1475United Airlines08:0010:054h 5mBoeing 737-800
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
F9 2225Frontier Airlines19:3721:434h 6mAirbus A321neo family
UA 1475United Airlines08:0010:054h 5mBoeing 737-800
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
UA 1475United Airlines08:0010:054h 5mBoeing 737-800
UA 2288United Airlines16:2718:193h 52mBoeing 737-800
F9 2225Frontier Airlines18:3520:464h 11mAirbus A321

Showing all 20 scheduled RDU to DEN departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every RDU to DEN date on the interactive map

Aircraft on the Raleigh/Durham to Denver nonstop

In the schedule table on this page, United Airlines flies the Boeing 737-800, and Frontier Airlines flies the Airbus A320neo, the Airbus A321neo family, and the Airbus A321. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full RDU to DEN nonstop schedule

This page carries the full RDU to DEN nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each RDU to DEN nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See RDU to DEN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Raleigh/Durham to Denver nonstop

Carriers operating RDU to DEN nonstop in the current schedule.

See RDU to DEN on the interactive map →

Frequently asked questions about RDU to DEN

How long is the flight from Raleigh/Durham (RDU) to Denver (DEN)?
Scheduled flight times from Raleigh/Durham (RDU) to Denver (DEN) run from 3h 50m to 4h 11m across the departures in the schedule table on this page. The nonstop covers about 1,434 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from RDU to DEN?
United Airlines and Frontier Airlines fly RDU to DEN nonstop. 2LNR doesn't show award or upgrade space for any of them on RDU to DEN, so this page carries the schedule rather than a space claim.
How many flights a week are there from RDU to DEN?
About 20 nonstop flights a week run between Raleigh/Durham (RDU) and Denver (DEN) in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from RDU to DEN depart?
Scheduled RDU to DEN nonstops in the next 7 days with service leave between 08:00 and 19:37, local time at Raleigh/Durham. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate RDU to DEN nonstop?
In the schedule table on this page, RDU to DEN nonstops fly as UA 741, UA 1475, and UA 2288 on United Airlines, and F9 2225 on Frontier Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on RDU to DEN?
Not on this route: 2LNR doesn't show award or upgrade space for any airline flying RDU to DEN. The page carries the full RDU to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full RDU to DEN nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

Get started free