Historical on-time performance
Washington to Miami
920 miData through May 2026Source: US DOT · BTS
Flights on DCA–MIA arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.4%of scheduled flights
based on 3,849 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesbestOn-time74%Medianon timep9055 minCancel2.5%Flights3,542
- Delta Air LinesOn-time64%Medianon timep9085 minCancel2.0%Flights307
Why flights run late
Delay causes
- Airline24%
- Weather6%
- Air traffic (NAS)18%
- Late aircraft52%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline5%
- Weather86%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 93 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 DCA → MIA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 4,017 flights
- Middays76% on time · p90 55 min · 2,671 flights
- Afternoons68% on time · p90 75 min · 1,940 flights
- Overnights67% on time · p90 70 min · 835 flights
- Evenings62% on time · p90 90 min · 2,095 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 80% on time.
- Tuesdays80% on time · p90 40 min · 1,678 flights
- Saturdays77% on time · p90 50 min · 1,490 flights
- Wednesdays75% on time · p90 50 min · 1,676 flights
- Thursdays75% on time · p90 55 min · 1,667 flights
- Mondays74% on time · p90 55 min · 1,673 flights
- Fridays74% on time · p90 60 min · 1,691 flights
- Sundays71% on time · p90 60 min · 1,683 flights
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