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Time difference: Washington to Denver
IAD (Washington Dulles International Airport) → DEN (Denver International Airport)
-2h
Denver is behind
1d
est. jet-lag recovery, westbound
Reading the clocks
When it's noon in Washington, it's 10:00 AM in Denver. Good for planning calls home or coordinating with people on the other end.
Jet lag outlook
Minor adjustmentCrossing 2 time zones westbound — plan roughly 1 day to feel fully adjusted.
Frequently asked questions
What is the time difference between Washington and Denver?
Denver is 2 hours behind Washington.
How bad will my jet lag be?
Crossing 2 time zones westbound typically takes 1 day to fully adjust to. Eastbound trips (traveling against your body clock) tend to feel worse than the same distance westbound.
What is the flight time from IAD to DEN?
The nonstop flight distance is 1,449 miles. See the full distance and flight-time breakdown for exact timing.
What's the best way to book around jet lag?
Overnight eastbound flights that land in the morning let you push through to local bedtime and adjust faster. Call CheapoTrav — our agents know which schedules on this route land at the best local time, plus unpublished phone-only fares.