Washington, VA · Airport profile
IAD
Washington Dulles International Airport
IAD right now
Current operating conditions, from live sources only.
Aviation weather is not currently a factor. FAA operational data — ground stops, ground delay programs and closures — is not currently available to FlyerIntel.
FAA operational data is not currently available to FlyerIntel. Why
Minimal operational impact. Conditions are not a notable factor for operations right now.
Forecast issued 23:20Z.
UpdatedSecurity wait data is not currently available for IAD. Why
Parking data is not currently available for IAD. Why
FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.
Airport reliability
Departures from IAD, July 2023 – June 2026.
Better than 60% of major US airports covered by FlyerIntel (58 compared)
Calculated from 164,950 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – June 2026
Best time to fly from IAD
On-time arrival rate by scheduled local departure time.
Flights departing 5–9 AM arrived on time 88.1% of the time, against 72.5% for 6–9 PM departures — a gap of 15.5 percentage points.
By departure window
By departure hour
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Buckets with fewer than 120 flights are not scored.
What to expect at IAD
How busy the airport is through the day, from scheduled departure volume.
Scheduled departures by hour
The busiest hour is 5 PM, with about 34 departures a day, against roughly 0 at 9 PM.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Taxi-out is the time between leaving the gate and lifting off, averaged across departures and weighted by hour.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 4.1 percentage points.
By month
July is historically the weakest month and October the strongest, a spread of 17.3 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Airlines at IAD
Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.
| Carrier | Departures | On time | Cancelled | Median delay |
|---|---|---|---|---|
| United Airlines UA | 102,414 | 81.4% | 0.98% | -7 min |
| Republic Airways YX | 24,444 | 83.9% | 1.98% | -9 min |
| Delta Air Lines DL | 9,338 | 83.0% | 1.41% | -11 min |
| SkyWest Airlines OO | 7,885 | 79.8% | 1.74% | -8 min |
| Alaska Airlines AS | 5,486 | 75.1% | 1.06% | -4 min |
| PSA Airlines OH | 4,164 | 82.8% | 2.09% | -12 min |
| Southwest Airlines WN | 3,805 | 78.9% | 0.55% | -4 min |
| American Airlines AA | 2,933 | 77.2% | 2.08% | -8 min |
| Frontier Airlines F9 | 2,365 | 66.7% | 2.49% | -3 min |
| Allegiant Air G4 | 1,313 | 71.0% | 0.91% | -6 min |
| Endeavor Air 9E | 641 | 87.1% | 0.47% | -16 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 500 departures are not listed.
Routes from IAD
Ranked by FlyerIntel Route Reliability Score.
Most reliable
Busiest routes
| Destination | Flights | On time | Score |
|---|---|---|---|
| IAD → ATL Atlanta | 10,957 | 80.6% | 63 |
| IAD → DEN Denver | 9,994 | 81.5% | 72 |
| IAD → SFO San Francisco | 8,273 | 78.6% | 67 |
| IAD → LAX Los Angeles | 7,574 | 81.8% | 74 |
| IAD → SEA Seattle | 6,309 | 79.3% | 69 |
| IAD → CLT Charlotte | 6,072 | 82.3% | 65 |
| IAD → MCO Orlando | 5,790 | 78.6% | 64 |
| IAD → ORD Chicago | 5,548 | 78.7% | 69 |
| IAD → DFW Dallas–Fort Worth | 5,438 | 77.8% | 58 |
| IAD → IAH Houston | 5,349 | 81.0% | 73 |
| IAD → SAN San Diego | 4,605 | 83.3% | 77 |
| IAD → BOS Boston | 4,475 | 77.6% | 59 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Only routes with at least 750 flights are ranked.
Reliability over time
On-time arrival rate for departures, by month.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and sources
Historical statistics
Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – June 2026, comprising 164,950 departures from IAD. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Live conditions
Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.
Latest observation for IAD: METAR KIAD 292352Z 16005KT 10SM FEW085 FEW250 24/17 A3018 RMK AO2 SLP216 T02440167 10289 20244 58002 $ (issued ).