Dulles (IAD) to Denver (DEN) flights
One airline flies nonstop from Dulles (IAD) to Denver (DEN): United Airlines. The two airports are 1,449 miles (2,332 km) apart. United Airlines is in Star Alliance. There are also 63 ways to fly it with one stop, through Indianapolis, Dayton and Columbus and more.
Airlines flying nonstop from IAD to DEN
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAD to DEN with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAD to DEN with one stop
63 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Indianapolis (IND)United Airlines the whole way
- Via Dayton (DAY)United Airlines the whole way
- Via Columbus (CMH)United Airlines the whole way
- Via Cincinnati (CVG)United Airlines the whole way
- Via Kansas City (MCI)United Airlines the whole way+1
- Via Saint Louis (STL)United Airlines the whole way
- Via Pittsburgh (PIT)United Airlines the whole way
- Via Louisville (SDF)United Airlines the whole way
- Via Chicago (ORD)United Airlines the whole way
- Via Cleveland (CLE)United Airlines the whole way
- Via Detroit (DTW)Delta Air Lines and United Airlines the whole way
+1 - Via Nashville (BNA)United Airlines the whole way
- Via Richmond (RIC)United Airlines the whole way
- Via Knoxville (TYS)United Airlines and Allegiant Air the whole way
- Via Minneapolis (MSP)Delta Air Lines, United Airlines and 1 more the whole way
+2
IAD to DEN: common questions
Which airlines fly nonstop from IAD to DEN?
United Airlines (Star Alliance) flies nonstop from Dulles (IAD) to Denver (DEN).
How far is Dulles from Denver by plane?
Dulles (IAD) and Denver (DEN) are 1,449 miles (2,332 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAD to DEN award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAD to DEN cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAD to DEN with taxes and fees.
Where can I connect between Dulles and Denver?
The most direct connections are through Indianapolis (IND), Dayton (DAY), Columbus (CMH), Cincinnati (CVG) and Kansas City (MCI). On 61 of them the same airline flies both flights, for example United Airlines through Indianapolis.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.