Dulles to Denver (IAD–DEN) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
IAD–DEN is served by 4 airlines with nonstop service. United Airlines, Air Canada and SkyWest Airlines lead the route. The flight covers 1,449 miles in approximately 3h 56m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: AV, AZ, CM, ET, SN | 84 | 32Q, 739, 753, 764, 7M9, A21N | 3h16-4h07 | Star Alliance | AV, AZ, CM, ET, SN | |
| AC Air Canada | 0 | – | – | Star Alliance | – | |
| OO SkyWest Airlines | 0 | – | – | – | – | |
| WN Southwest Airlines | 0 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Denver from Dulles
| Metric | IAD→DEN | DCA→DEN | BWI→DEN |
|---|---|---|---|
| Distance from IAD | – | 23 mi | 45 mi |
| Nonstop airlines | 4 | 5 | 3 |
| Weekly flights | 190 | 49 | 89 |
| Flight time | 3h 56m | 3h 36m | 3h 30m |
| Departure OTP | 72% | – | – |
Travel Essentials
IAD: EDT · DEN: MDT
When it's 6:00 PM in Dulles, it's 4:00 PM in Denver.
WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).
RTD A Line runs to Denver Union Station (37 min, $10.50) with connections to light rail and bus routes. Taxis have meters; expect $55–65 to downtown.DEN's tent-roof Jeppesen Terminal is a single building; all three concourses connect via the underground automated train. Rental cars are on level 5. For ski resorts, shuttle services depart from Ground Transportation.
Semi-arid with 300+ days of sunshine. Summers are dry and warm (27–34°C) with afternoon thunderstorms that produce dramatic but brief delays. Winters bring cold temperatures (−8 to 5°C) and heavy blizzards that can shut down ground operations.
Spring snowstorms can be heavier than midwinter ones. Altitude (5,430 ft) means low humidity year-round; stay hydrated.
IAD–DEN Quick Facts
Frequently Asked Questions
Flights from IAD to DEN
Washington Dulles International Airport (IAD) and Denver International Airport (DEN) are connected by nonstop service from United Airlines, Air Canada, SkyWest Airlines and Southwest Airlines. With 190 weekly departures, this is a heavily served route.
IAD to DEN Flight Duration and Schedule
Nonstop flight time from IAD to DEN is about 3 hours 56 minutes gate to gate. The route covers a distance of 1,449 miles (2,332 km). There are approximately 190 weekly flights outbound and 150 return, totaling 340 flights per week in both directions.
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Louisville Muhammad Ali, Indianapolis and Cincinnati Northern Kentucky. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Washington (DCA), Baltimore (BWI) and Charlottesville (CHO).