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WBU to IAD: distance & flight time
Boulder (Boulder Municipal Airport) → Washington (Washington Dulles International Airport)
1,477 mi
2,376 km · 1,283 nm
3h 41m
estimated nonstop flight time
+2h
time difference · heading east
See live WBU→IAD fares Phone-only fares on this route — call free
Flight time details
1,477 miles nonstop takes roughly 3h 41m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- IAD — Washington Dulles International Airport · Washington, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
Frequently asked questions
How far is WBU from IAD?
The flight distance from Boulder (WBU) to Washington (IAD) is 1,477 miles (2,376 km, 1,283 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to IAD?
A nonstop flight takes about 3h 41m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Boulder and Washington?
Washington is 2 hours ahead of Boulder.
What is the cheapest way to fly from WBU to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–IAD that never appear on search engines, with no booking fees.