Washington to Denver (IAD-DEN): nonstop flights and who flies them

United Airlines flies nonstop between Washington (IAD) and Denver (DEN), roughly 53 times a week. The timetable below shows the nonstop scheduled at 3h 50m to 4h 10m for the 1,450 miles.

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

Updated .

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53
Flights a week, 4-week average
3h 50m to 4h 10m
Scheduled flight time
1,450 mi
Nonstop distance
Free
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Washington to Denver flight schedule

Scheduled nonstop departures for IAD 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 Washington (IAD) to Denver (DEN)
Date Flight Airline Departs IAD Arrives DEN Duration Aircraft
UA 1561United Airlines06:3508:283h 53mBoeing 737-900
UA 797United Airlines08:1510:093h 54mAirbus A321neo family
UA 1865United Airlines10:1012:023h 52mBoeing 737-900
UA 1587United Airlines12:4014:303h 50mAirbus A321neo family
UA 1126United Airlines14:4316:333h 50mAirbus A321neo family
UA 395United Airlines16:1218:093h 57mBoeing 737-900
UA 599United Airlines17:2719:304h 3mBoeing 757-300
UA 495United Airlines22:3400:303h 56mAirbus A321neo family
UA 1561United Airlines06:3508:283h 53mBoeing 737-900
UA 797United Airlines08:1510:093h 54mAirbus A321neo family
UA 1865United Airlines10:1012:023h 52mBoeing 737-900
UA 1587United Airlines12:4014:303h 50mAirbus A321neo family
UA 1126United Airlines14:4316:333h 50mAirbus A321neo family
UA 395United Airlines16:1218:093h 57mBoeing 737-900
UA 599United Airlines17:2719:304h 3mBoeing 757-300
UA 495United Airlines22:3400:283h 54mBoeing 737 MAX 9
UA 797United Airlines08:1510:093h 54mAirbus A321neo family
UA 1865United Airlines10:1012:023h 52mBoeing 737-900
UA 1587United Airlines12:5014:403h 50mAirbus A321neo family
UA 1126United Airlines14:4316:333h 50mAirbus A321neo family
UA 395United Airlines16:1218:093h 57mBoeing 737-900
UA 599United Airlines17:2719:304h 3mBoeing 757-300
UA 495United Airlines22:3400:303h 56mAirbus A321neo family
UA 2264United Airlines06:1008:194h 9mAirbus A321neo family
UA 792United Airlines08:1510:093h 54mAirbus A321neo family
UA 1865United Airlines10:1012:023h 52mBoeing 737-900
UA 1587United Airlines12:4014:303h 50mAirbus A321neo family
UA 1126United Airlines14:1016:204h 10mAirbus A321neo family
UA 395United Airlines16:1218:093h 57mBoeing 737-900
UA 599United Airlines17:2019:304h 10mAirbus A321neo family
UA 495United Airlines22:3400:303h 56mAirbus A321neo family
UA 2264United Airlines06:1008:194h 9mAirbus A321neo family
UA 792United Airlines08:1510:093h 54mAirbus A321neo family
UA 1865United Airlines10:1012:023h 52mBoeing 737-900
UA 1587United Airlines12:4014:303h 50mAirbus A321neo family
UA 1126United Airlines14:4316:333h 50mAirbus A321neo family
UA 395United Airlines16:1218:093h 57mBoeing 737-900
UA 599United Airlines17:2019:304h 10mAirbus A321neo family
UA 495United Airlines22:3400:303h 56mAirbus A321neo family
UA 792United Airlines08:1510:093h 54mAirbus A321neo family

Showing the first 40 of 53 scheduled IAD to DEN departures across 7 days with service, starting October 22, 2026. Every remaining date is 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 IAD to DEN date on the interactive map

Aircraft on the Washington to Denver nonstop

United Airlines flies the departures in the schedule table on this page with the Airbus A321neo family, the Boeing 737-900, the Boeing 757-300, and the Boeing 737 MAX 9. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAD to DEN nonstop schedule

This page carries the full IAD 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 IAD to DEN nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

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

Airlines flying Washington to Denver nonstop

Carriers operating IAD to DEN nonstop in the current schedule.

See IAD to DEN on the interactive map →

Frequently asked questions about IAD to DEN

How long is the flight from Washington (IAD) to Denver (DEN)?
Scheduled flight times from Washington (IAD) to Denver (DEN) run from 3h 50m to 4h 10m across the departures in the schedule table on this page. The nonstop covers about 1,450 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAD to DEN?
United Airlines is currently the only airline flying IAD to DEN nonstop. 2LNR doesn't show award or upgrade space for it on IAD to DEN, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAD to DEN?
About 53 nonstop flights a week run between Washington (IAD) and Denver (DEN) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to DEN depart?
Scheduled IAD to DEN nonstops in the next 7 days with service leave between 06:10 and 22:34, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAD to DEN nonstop?
The schedule table on this page lists 10 flight numbers for IAD to DEN nonstops, including UA 395, UA 495, UA 599, UA 792, UA 797, UA 1126, UA 1587, and UA 1865 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAD to DEN?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to DEN. The page carries the full IAD to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD 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.

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