BOS to LAS flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Harry Reid International Airport · 2,381 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Las Vegas (LAS) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.2% were cancelled, and 9% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (78% on time); JetBlue was the least (74%).
- Departures scheduled around 6am did best (95% on time); around 7pm did worst (60%).
- Saturday was the most reliable day to fly (80% on time) and Sunday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from BOS to LAS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 78% | 1.2% | 14 min | 5.9% | 564 |
| JetBlue | 74% | 1.2% | 20 min | 10.5% | 1,045 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am95%60 flights
- 7am80%502 flights
- 8am80%159 flights
- 9am90%29 flights
- 10am80%159 flights
- 11am80%25 flights
- 4pm68%72 flights
- 5pm71%144 flights
- 6pm72%175 flights
- 7pm60%173 flights
- 8pm67%58 flights
- 9pm66%47 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%4.1% cancelled
- Tuesday76%2.3% cancelled
- Wednesday76%0.0% cancelled
- Thursday75%0.4% cancelled
- Friday76%0.0% cancelled
- Saturday80%0.5% cancelled
- Sunday71%1.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft42%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion24%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather90%
- Airline (crew, maintenance, cleaning, fueling)10%
- Air traffic control & airport congestion0%
- Security0%
BOS to LAS: common questions
- How often are BOS to LAS flights on time?
- 76% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Boston to Las Vegas cancelled?
- 1.2% of scheduled flights were cancelled (20 of 1,609).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 8.9% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to BOS — 75% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.