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A

Washington (IAD) departure delays

5,053 departures · 66 routes · March 2025 – August 2026

82.92%

Left on time

Within 15 minutes of schedule

0.93%

Cancelled

Share of departures

109 min

When late, late by

Average delayed departure

#14

Rank

Among graded US airports

What the record says about IAD

Departures from IAD leave close to schedule more often than most airports in the record. An airport this punctual is usually one with spare capacity in its runway slots.

The airlines flying from here are not equally affected. SkyWest Airlines left on time 13.5 points more often than Frontier Airlines from the same airport — which is the clearest evidence available that a delayed departure is not purely the airport's fault.

With 40 routes in the record, IAD is a hub, and hubs carry a particular risk: a delay early in the day propagates through every aircraft that was due to fly on afterwards. Morning departures from a hub are reliably better than evening ones.

Which airlines run best out of IAD

Airline Departures On time
SkyWest Airlines 239 82.1%
Delta Air Lines 300 81.4%
Virgin Atlantic 465 80.8%
Republic Airways 697 79%
British Airways 1,341 76.7%
United Airlines 4,660 74.7%
Frontier Airlines 217 68.6%

Routes out of IAD

IAD → LHR London 2,619 flights · 73.23% on time D IAD → ATL Atlanta 381 flights · 76.94% on time C IAD → EDI Ingliston 373 flights · 63.49% on time D IAD → DEN Denver 263 flights · 80.46% on time B IAD → LAX Los Angeles 253 flights · 81.2% on time B IAD → SFO San Francisco 234 flights · 63.52% on time D IAD → ORD Chicago 210 flights · 79.43% on time B IAD → SEA Seattle 198 flights · 78.46% on time C IAD → DFW Dallas/Fort Worth 196 flights · 66.67% on time D IAD → IAH Houston 180 flights · 77.97% on time B IAD → MCO Orlando 169 flights · 79.52% on time B IAD → EWR Newark 150 flights · 78.91% on time C IAD → BOS Boston 120 flights · 81.2% on time C IAD → SAN San Diego 120 flights · 75% on time C IAD → DTW Detroit 120 flights · 83.76% on time B IAD → CLT Charlotte 119 flights · 80.17% on time C IAD → CLE Cleveland 116 flights · 84.48% on time B IAD → MSP Minneapolis 116 flights · 85.22% on time B IAD → PWM Portland 107 flights · 88.68% on time A IAD → TPA Tampa 95 flights · 82.11% on time — IAD → BNA Nashville 92 flights · 72.83% on time — IAD → LAS Las Vegas 90 flights · 71.11% on time — IAD → AUS Austin 88 flights · 73.56% on time — IAD → PIT Pittsburgh 86 flights · 76.47% on time — IAD → RDU Raleigh/Durham 86 flights · 78.57% on time — IAD → IND Indianapolis 85 flights · 85.88% on time — IAD → BDL Hartford 85 flights · 83.13% on time — IAD → FLL Fort Lauderdale 78 flights · 76.92% on time — IAD → JAX Jacksonville 69 flights · 69.57% on time — IAD → LGA New York 60 flights · 59.65% on time — IAD → SDF Louisville 60 flights · 86.67% on time — IAD → CHS Charleston 60 flights · 93.22% on time — IAD → SJU San Juan 60 flights · 85% on time — IAD → MCI Kansas City 60 flights · 77.97% on time — IAD → SLC Salt Lake City 60 flights · 81.36% on time — IAD → ORF Norfolk 60 flights · 80% on time — IAD → SAT San Antonio 56 flights · 78.57% on time — IAD → CMH Columbus 45 flights · 77.78% on time — IAD → MSY New Orleans 44 flights · 75% on time — IAD → PHL Philadelphia 35 flights · 90.91% on time —