Historical on-time performance
Washington to Atlanta
Flights on IAD–ATL arrive on time 76% of the time over the last 12 months.
based on 3,908 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time80%Medianon timep9050 minCancel0.4%Flights1,084
- Delta Air LinesOn-time77%Medianon timep9045 minCancel3.1%Flights2,217
- Frontier AirlinesOn-time66%Medianon timep9090 minCancel2.0%Flights607
Why flights run late
Delay causes
- Airline35%
- Weather4%
- Air traffic (NAS)21%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline64%
- Weather32%
- Air traffic (NAS)4%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 84 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAD → ATL
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 70% to 85% on time.
- Middays85% on time · p90 25 min · 3,211 flights
- Mornings84% on time · p90 25 min · 3,503 flights
- Afternoons73% on time · p90 70 min · 1,024 flights
- Evenings70% on time · p90 80 min · 2,581 flights
- Overnights70% on time · p90 65 min · 578 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 82% on time.
- Wednesdays82% on time · p90 45 min · 1,508 flights
- Saturdays81% on time · p90 40 min · 1,381 flights
- Thursdays81% on time · p90 35 min · 1,646 flights
- Tuesdays81% on time · p90 40 min · 1,489 flights
- Mondays77% on time · p90 55 min · 1,620 flights
- Fridays77% on time · p90 55 min · 1,644 flights
- Sundays74% on time · p90 60 min · 1,609 flights
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