Historical on-time performance
Washington to Jacksonville
630 miData through Dec 2025Source: US DOT · BTS
Flights on IAD–JAX arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 495 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time78%Medianon timep9025 minCancel6.6%Flights91
- United AirlinesOn-time79%Medianon timep9045 minCancel0.5%Flights404
Why flights run late
Delay causes
- Airline33%
- Weather14%
- Air traffic (NAS)27%
- Late aircraft27%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAD → JAX
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 67% to 85% on time.
- Mornings85% on time · p90 25 min · 780 flights
- Middays83% on time · p90 30 min · 408 flights
- Evenings67% on time · p90 65 min · 995 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 83% on time.
- Wednesdays83% on time · p90 25 min · 286 flights
- Thursdays79% on time · p90 35 min · 299 flights
- Saturdays78% on time · p90 40 min · 260 flights
- Tuesdays78% on time · p90 45 min · 289 flights
- Mondays75% on time · p90 50 min · 401 flights
- Sundays73% on time · p90 45 min · 286 flights
- Fridays71% on time · p90 60 min · 401 flights
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