Historical on-time performance
Cleveland to San Juan
1,839 miData through Dec 2025Source: US DOT · BTS
Flights on CLE–SJU arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 122 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Frontier AirlinesOn-time70%Medianon timep9075 minCancel1.6%Flights122
Why flights run late
Delay causes
- Airline35%
- Weather1%
- Air traffic (NAS)11%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly CLE → SJU
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 55% to 67% on time.
- Evenings67% on time · p90 70 min · 92 flights · limited
- Overnights59% on time · p90 75 min · 94 flights · limited
- Middays55% on time · p90 75 min · 271 flights
Best day of week
Wednesdays are the most reliable day to fly this route — 77% on time.
- Wednesdays77% on time · p90 25 min · 70 flights · limited
- Mondays62% on time · p90 70 min · 68 flights · limited
- Tuesdays59% on time · p90 75 min · 68 flights · limited
- Saturdays59% on time · p90 90 min · 85 flights · limited
- Fridays57% on time · p90 90 min · 69 flights · limited
- Sundays54% on time · p90 70 min · 72 flights · limited
- Thursdays53% on time · p90 70 min · 72 flights · limited
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