Historical on-time performance
New York to Salt Lake City
1,989 miData through May 2026Source: US DOT · BTS
Flights on JFK–SLC arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 1,928 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time79%Medianon timep9035 minCancel1.6%Flights1,535
- JetBlue AirwaysOn-time66%Medianon timep9075 minCancel2.5%Flights393
Why flights run late
Delay causes
- Airline35%
- Weather7%
- Air traffic (NAS)36%
- Late aircraft22%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline29%
- Weather69%
- Air traffic (NAS)3%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 35 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 JFK → SLC
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 — 88% on time.
- Mornings88% on time · p90 15 min · 1,391 flights
- Afternoons83% on time · p90 30 min · 880 flights
- Middays82% on time · p90 30 min · 1,427 flights
- Evenings72% on time · p90 60 min · 1,777 flights
- Overnights65% on time · p90 85 min · 460 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 83% on time.
- Tuesdays83% on time · p90 30 min · 842 flights
- Wednesdays81% on time · p90 30 min · 841 flights
- Mondays80% on time · p90 35 min · 846 flights
- Fridays80% on time · p90 35 min · 851 flights
- Thursdays80% on time · p90 50 min · 847 flights
- Saturdays75% on time · p90 55 min · 856 flights
- Sundays75% on time · p90 45 min · 852 flights
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