What's the busiest hour for departures at IAD?

Departures from Washington Dulles International Airport peak at 17:00 local time, averaging 74.2 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 12745 observed departures in the past 60 days.

What's the most popular destination from IAD?

Atlanta (ATL) is the most-flown destination, with 588 observed departures in the past 60 days.

🇺🇸

IAD Airport - Washington Dulles International Airport

Washington, United States. Departures peak at 17:00 local, averaging 74.2 flights per hour.

Window: last 60 days. Last refreshed: 2026-07-06. Schedule coverage: 53 days observed.

Peak departure hour

17:00

74.2 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 days

Total: 372.5 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 days

Peak arrival hour: 11:00 local (59.3 flights/hr). Total: 368.7 avg arrivals/day.

Top airlines

1. United Airlines, (UA) 12,745
2. Delta Air Lines, (DL) 763
3. American Airlines (AA) 378
4. Frontier Airlines, (F9) 332
5. Avianca - Aerovias Nacionales de Colombia, (AV) 297

Top destinations

1. 🇺🇸 Atlanta (ATL) 588
2. 🇺🇸 Denver (DEN) 430
3. 🇺🇸 Los Angeles (LAX) 387
4. 🇺🇸 Charlotte (CLT) 378
5. 🇺🇸 San Francisco (SFO) 362

Frequently asked

What's the busiest hour for departures at IAD?: Departures from Washington Dulles International Airport peak at 17:00 local time, averaging 74.2 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 12745 observed departures in the past 60 days.
What's the most popular destination from IAD?: Atlanta (ATL) is the most-flown destination, with 588 observed departures in the past 60 days.

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