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How Busy Is Washington Dulles International Airport? IAD
Washington, United States. Departures peak at 17:00 local, averaging 73.3 flights per hour.
Window: last 60 days. Last refreshed: 2026-10-04. Schedule coverage: 143 days observed.
Peak departure hour
17:00
73.3 flights/hr
Quietest active hour
01:00
1 flights/hr
Traffic score
85/100
Relative volume
Departures by hour (local time)
Avg per day, last 60 daysTotal: 357.7 avg departures per day.
Weekday vs weekend departure pattern
Weekday avg per hour
Weekend avg per hour
Arrivals by hour (local time)
Avg per day, last 60 daysPeak arrival hour: 16:00 local (60.1 flights/hr). Total: 359.8 avg arrivals/day.
Top airlines
- 1. United Airlines, (UA) 16,039
- 2. Delta Air Lines, (DL) 980
- 3. American Airlines (AA) 438
- 4. Frontier Airlines, (F9) 414
- 5. Avianca - Aerovias Nacionales de Colombia, (AV) 364
Top destinations
- 1. 🇺🇸 Atlanta (ATL) 728
- 2. 🇺🇸 Charlotte (CLT) 522
- 3. 🇺🇸 Denver (DEN) 488
- 4. 🇺🇸 San Francisco (SFO) 443
- 5. 🇺🇸 Chicago (ORD) 430
Frequently asked
- What's the busiest hour for departures at IAD?
- Departures from Washington Dulles International Airport peak at 17:00 local time, averaging 73.3 flights per hour over the past 60 days.
- What's the quietest hour to fly out of IAD?
- The quietest hour with regular service is 01:00 local time, averaging 1 flights per hour.
- Which airline operates the most flights from IAD?
- United Airlines, (UA) is the largest operator at Washington Dulles International Airport, with 16039 observed departures in the past 60 days.
- What's the most popular destination from IAD?
- Atlanta (ATL) is the most-flown destination, with 728 observed departures in the past 60 days.
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