BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
BOS→LAS

Boston, MA (BOS) to Las Vegas, NV (LAS) flight delay odds

74.4% of 1,638 official scheduled BOS-to-LAS flights arrived on time; 15.2% arrived at least 30 minutes late and 1.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
74.4%arrived on time
15.2%30+ min late
1.2%cancelled
1,638scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.5%all scheduled flights
120+ minutes late3.5%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+5.3 mincompleted flights

Which departure time was most reliable for BOS to LAS?

Among qualifying BOS-to-LAS departure window results, Early morning had the highest on-time rate: 80.3% of 721 flights. Night was lowest at 66.0% across 47 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning72180.3%9.6%1.2%
Late morning21379.8%10.8%1.9%
Afternoon7869.2%21.8%0.0%
Evening57966.3%22.1%1.2%
Night4766.0%25.5%0.0%

Which weekday was most reliable for BOS to LAS?

Among qualifying BOS-to-LAS weekday results, Saturday had the highest on-time rate: 79.8% of 198 flights. Sunday was lowest at 69.1% across 249 flights.

DayFlightsOn time30+ minCancelled
Monday24873.0%15.7%3.2%
Tuesday22774.4%14.1%2.2%
Wednesday22175.6%16.3%0.5%
Thursday24774.1%17.4%0.4%
Friday24875.8%12.5%0.0%
Saturday19879.8%13.6%0.5%
Sunday24969.1%16.5%1.6%

Which airline was most reliable for BOS to LAS?

Among qualifying BOS-to-LAS airline results, Delta Air Lines had the highest on-time rate: 76.6% of 593 flights. JetBlue Airways was lowest at 73.1% across 1,045 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways1,04573.1%16.7%1.1%
Delta Air Lines59376.6%12.5%1.3%

Which month was most reliable for BOS to LAS?

Among qualifying BOS-to-LAS month results, August 2025 had the highest on-time rate: 84.9% of 106 flights. February 2026 was lowest at 65.4% across 130 flights.

MonthFlightsOn time30+ minCancelled
July 202512273.8%14.8%1.6%
August 202510684.9%8.5%0.0%
September 202514681.5%10.3%0.0%
October 202516571.5%21.2%0.0%
November 202511681.9%12.9%0.0%
December 202512171.9%14.9%0.8%
January 202613965.5%21.6%5.0%
February 202613065.4%19.2%6.2%
March 202616871.4%16.7%0.0%
April 202616581.8%9.1%0.0%
May 202615973.0%16.4%0.6%
June 202610171.3%14.9%1.0%

What drove BOS to LAS delay minutes?

Late aircraft was the largest recorded BOS-to-LAS delay category, accounting for 40.3% of 25,840 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.7%
Late aircraft40.3%
National airspace26.7%
Weather3.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.