Historical on-time performance
Las Vegas to Boston
2,381 miData through Dec 2025Source: US DOT · BTS
Flights on LAS–BOS arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 1,715 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-time75%Medianon timep9065 minCancel0.2%Flights619
- JetBlue AirwaysOn-time78%Medianon timep9060 minCancel0.5%Flights1,096
Why flights run late
Delay causes
- Airline24%
- Weather2%
- Air traffic (NAS)38%
- Late aircraft36%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
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 (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 54% to 75% on time.
- Overnights75% on time · p90 55 min · 2,052 flights
- Middays74% on time · p90 65 min · 2,106 flights
- Afternoons68% on time · p90 75 min · 577 flights
- Mornings54% on time · p90 95 min · 111 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 81% on time.
- Tuesdays81% on time · p90 50 min · 647 flights
- Wednesdays80% on time · p90 40 min · 662 flights
- Saturdays76% on time · p90 55 min · 598 flights
- Mondays73% on time · p90 65 min · 744 flights
- Fridays72% on time · p90 65 min · 744 flights
- Thursdays69% on time · p90 75 min · 739 flights
- Sundays64% on time · p90 75 min · 747 flights
Advertisement
Keep exploring