Southwest Airlines
Did you mean flights from Denver to Washington?
United States
Washington Dulles International Airport
Switch direction
United States
Denver International Airport
Click to show full flight schedule
Scan through all non-stop flights from Washington to Denver. The full flight schedule below gives an overview of all non-stop flights from IAD to DEN, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
The Mediterranean regions near Denver are known for their warm, arid summers, where temperatures often go beyond 30°C (86°F). In some inland spots, the heat can climb even higher, sometimes reaching 40°C (104°F) or more. The winters are pleasantly mild, accompanied by some rainfall. This lovely climate, paired with breathtaking landscapes and bright, sunny days attract visitors from around the globe.
Denver is a wonderful place to visit all year long, but spring (March-May) and fall (September-November) are the best seasons to visit. The weather is pleasantly warm during these times, especially since the summers can be quite hot in those regions.
In total there are 2 airlines operating nonstop flights from Washington IAD to Denver DEN. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their IAD DEN flight schedule.
Flights from IAD to DEN are operated 68 times a week, with an average of 10 flights per day. Departure times vary between 05:05 - 22:35. The earliest flight departs at 05:05, the last flight departs at 22:35. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
You can fly in Economy and Business Class. Premium Economy and First Class are not available on this route (at least not as a non-stop flight).
The fastest direct flight from Washington to Denver takes 3 hours and 55 minutes. The flight distance between Washington and Denver is 1,448 miles (or 2,330 km).
There are 2 airports in Denver: Denver International Airport (DEN) and Centennial Airport (APA).
There are 68 flights per week flying from Washington to Denver (as of April 2026).
3 hours and 55 minutes is the average flight time from Washington to Denver.
The distance from Washington to Denver is 1,448 miles (2,330 kilometers).
Southwest Airlines and United Airlines are flying nonstop from Washington to Denver.
Star Alliance is currently the only alliance flying nonstop from Washington to Denver.
You can fly non-stop in Economy and Business Class.
Aircraft types that fly from Washington to Denver:
The earliest flight departs at 05:05 from Washington and arrives at 07:00 at Denver.
The latest flight departs at 22:35 from Washington and arrives at 00:44 at Denver.
1,448 miles (2,330 km) · 3h 55m
05:05
07:00
Southwest Airlines
WN 3339
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
05:50
07:45
Southwest Airlines
WN 3339
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
05:50
07:40
Southwest Airlines
WN 2439
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
05:55
07:45
Southwest Airlines
WN 2439
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
06:20
08:10
Southwest Airlines
WN 2439
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
08:25
10:30
United Airlines
Star Alliance
UA 1256
United Airlines
Airbus A321neo
Y
W
J
F
08:25
10:28
United Airlines
Star Alliance
UA 644
United Airlines
Boeing 757-300
Y
W
J
F
09:55
12:00
United Airlines
Star Alliance
UA 1865
United Airlines
Airbus A321neo
Y
W
J
F
12:38
14:43
United Airlines
Star Alliance
UA 1587
United Airlines
Boeing 737-900
Y
W
J
F
12:43
14:48
United Airlines
Star Alliance
UA 1587
United Airlines
Boeing 737-900
Y
W
J
F
12:43
14:50
United Airlines
Star Alliance
UA 1587
United Airlines
Airbus A321neo
Y
W
J
F
12:43
14:48
United Airlines
Star Alliance
UA 1587
United Airlines
Boeing 737 MAX 9
Y
W
J
F
12:43
14:48
United Airlines
Star Alliance
UA 1587
United Airlines
Boeing 737-900
Y
W
J
F
12:43
14:50
United Airlines
Star Alliance
UA 1587
United Airlines
Airbus A321neo
Y
W
J
F
12:43
14:48
United Airlines
Star Alliance
UA 1587
United Airlines
Boeing 737-900
Y
W
J
F
12:43
14:50
United Airlines
Star Alliance
UA 1587
United Airlines
Airbus A321neo
Y
W
J
F
12:45
14:54
United Airlines
Star Alliance
UA 1587
United Airlines
Airbus A321neo
Y
W
J
F
14:21
16:28
United Airlines
Star Alliance
UA 431
United Airlines
Boeing 737-900
Y
W
J
F
14:37
16:45
United Airlines
Star Alliance
UA 1126
United Airlines
Airbus A321neo
Y
W
J
F
16:00
18:10
United Airlines
Star Alliance
UA 395
United Airlines
Boeing 737-900
Y
W
J
F
16:00
18:10
United Airlines
Star Alliance
UA 395
United Airlines
Boeing 737-900
Y
W
J
F
16:05
18:15
United Airlines
Star Alliance
UA 395
United Airlines
Boeing 737-900
Y
W
J
F
16:30
18:30
Southwest Airlines
WN 2440
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
16:50
18:45
Southwest Airlines
WN 2173
Southwest Airlines
Boeing 757
Y
W
J
F
17:05
19:05
Southwest Airlines
WN 2440
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
17:11
19:20
United Airlines
Star Alliance
UA 599
United Airlines
Boeing 757-300
Y
W
J
F
17:20
19:29
United Airlines
Star Alliance
UA 599
United Airlines
Boeing 757-300
Y
W
J
F
17:20
19:29
United Airlines
Star Alliance
UA 599
United Airlines
Boeing 757-300
Y
W
J
F
17:55
20:00
Southwest Airlines
WN 2440
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
17:55
20:00
Southwest Airlines
WN 2440
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
17:55
20:00
Southwest Airlines
WN 2440
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
18:05
20:10
Southwest Airlines
WN 2173
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
18:05
20:10
Southwest Airlines
WN 2440
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
18:10
20:10
Southwest Airlines
WN 2173
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
20:12
22:15
United Airlines
Star Alliance
UA 1100
United Airlines
Airbus A321neo
Y
W
J
F
20:12
22:15
United Airlines
Star Alliance
UA 1100
United Airlines
Airbus A321neo
Y
W
J
F
20:12
22:15
United Airlines
Star Alliance
UA 2667
United Airlines
Airbus A321neo
Y
W
J
F
22:35
00:44
United Airlines
Star Alliance
UA 495
United Airlines
Boeing 737-900
Y
W
J
F
22:35
00:46
United Airlines
Star Alliance
UA 495
United Airlines
Airbus A321neo
Y
W
J
F
22:35
00:44
United Airlines
Star Alliance
UA 495
United Airlines
Boeing 737-900
Y
W
J
F
Click to Check Prices
