Historical on-time performance
Las Vegas to Boston
Flights on LAS–BOS arrive on time 74% of the time over the last 12 months.
based on 1,674 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.
- Delta Air LinesOn-time74%Medianon timep9060 minCancel1.4%Flights622
- JetBlue AirwaysOn-time74%Medianon timep9065 minCancel1.1%Flights1,052
Why flights run late
Delay causes
- Airline28%
- Weather3%
- Air traffic (NAS)36%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline14%
- Weather86%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 21 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 LAS → BOS
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 62% to 75% on time.
- Overnights75% on time · p90 50 min · 2,115 flights
- Middays75% on time · p90 60 min · 2,231 flights
- Afternoons73% on time · p90 65 min · 563 flights
- Mornings62% on time · p90 70 min · 161 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 66% to 83% on time.
- Tuesdays83% on time · p90 40 min · 677 flights
- Wednesdays80% on time · p90 40 min · 691 flights
- Saturdays77% on time · p90 45 min · 613 flights
- Fridays74% on time · p90 60 min · 786 flights
- Mondays73% on time · p90 60 min · 778 flights
- Thursdays71% on time · p90 70 min · 781 flights
- Sundays66% on time · p90 70 min · 779 flights
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