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

Salt Lake City, UT (SLC) to Boston, MA (BOS) flight delay odds

80.7% of 1,256 official scheduled SLC-to-BOS flights arrived on time; 10.7% arrived at least 30 minutes late and 1.8% 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
80.7%arrived on time
10.7%30+ min late
1.8%cancelled
1,256scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.2%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+0.3 mincompleted flights

Which departure time was most reliable for SLC to BOS?

Among qualifying SLC-to-BOS departure window results, Night had the highest on-time rate: 85.1% of 484 flights. Evening was lowest at 76.1% across 364 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning36580.8%11.5%1.1%
Evening36476.1%14.3%1.1%
Night48485.1%7.0%2.5%

Which weekday was most reliable for SLC to BOS?

Among qualifying SLC-to-BOS weekday results, Saturday had the highest on-time rate: 88.4% of 199 flights. Sunday was lowest at 75.5% across 184 flights.

DayFlightsOn time30+ minCancelled
Monday18478.8%12.0%4.3%
Tuesday16880.4%10.7%1.8%
Wednesday16185.7%9.3%0.0%
Thursday17976.0%12.8%0.6%
Friday18179.6%9.9%1.7%
Saturday19988.4%6.0%0.0%
Sunday18475.5%14.1%3.8%

Which airline was most reliable for SLC to BOS?

Among qualifying SLC-to-BOS airline results, Delta Air Lines had the highest on-time rate: 82.2% of 1,083 flights. JetBlue Airways was lowest at 71.1% across 173 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,08382.2%9.7%1.3%
JetBlue Airways17371.1%16.8%4.6%

Which month was most reliable for SLC to BOS?

Among qualifying SLC-to-BOS month results, May 2026 had the highest on-time rate: 91.4% of 93 flights. February 2026 was lowest at 74.5% across 110 flights.

MonthFlightsOn time30+ minCancelled
July 202512375.6%15.4%1.6%
August 202511684.5%6.9%0.9%
September 20259278.3%16.3%0.0%
October 20259275.0%18.5%0.0%
November 20259788.7%8.2%0.0%
December 202510779.4%12.1%1.9%
January 20269277.2%5.4%7.6%
February 202611074.5%10.0%8.2%
March 202613280.3%11.4%0.0%
April 20269280.4%6.5%0.0%
May 20269391.4%5.4%1.1%
June 202611083.6%10.9%0.0%

What drove SLC to BOS delay minutes?

Late aircraft was the largest recorded SLC-to-BOS delay category, accounting for 36.0% of 13,518 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.9%
Late aircraft36.0%
National airspace29.9%
Weather1.2%
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.