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

Seattle, WA (SEA) to Las Vegas, NV (LAS) flight delay odds

77.0% of 5,650 official scheduled SEA-to-LAS flights arrived on time; 13.5% arrived at least 30 minutes late and 0.8% 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
77.0%arrived on time
13.5%30+ min late
0.8%cancelled
5,650scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late1.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+5.8 mincompleted flights

Which departure time was most reliable for SEA to LAS?

Among qualifying SEA-to-LAS departure window results, Early morning had the highest on-time rate: 89.8% of 1,151 flights. Night was lowest at 62.7% across 193 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,15189.8%5.5%1.2%
Late morning96780.9%10.8%0.3%
Afternoon1,88273.3%15.3%1.0%
Evening1,45770.8%18.3%0.6%
Night19362.7%22.3%1.0%

Which weekday was most reliable for SEA to LAS?

Among qualifying SEA-to-LAS weekday results, Saturday had the highest on-time rate: 82.3% of 724 flights. Friday was lowest at 72.5% across 850 flights.

DayFlightsOn time30+ minCancelled
Monday86773.5%15.1%0.9%
Tuesday77281.5%9.8%0.4%
Wednesday73780.9%10.0%0.3%
Thursday84874.4%15.8%0.7%
Friday85072.5%17.8%1.8%
Saturday72482.3%10.4%0.6%
Sunday85275.5%14.4%1.1%

Which airline was most reliable for SEA to LAS?

Among qualifying SEA-to-LAS airline results, Delta Air Lines had the highest on-time rate: 82.7% of 1,738 flights. Frontier Airlines was lowest at 67.1% across 246 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines2,63877.1%13.3%0.9%
Delta Air Lines1,73882.7%9.8%0.9%
Southwest Airlines97668.9%18.1%0.5%
Frontier Airlines24667.1%24.0%1.2%
Spirit Airlines4367.4%18.6%0.0%
SkyWest Airlines9100.0%0.0%0.0%

Which month was most reliable for SEA to LAS?

Among qualifying SEA-to-LAS month results, April 2026 had the highest on-time rate: 84.0% of 476 flights. July 2025 was lowest at 68.3% across 521 flights.

MonthFlightsOn time30+ minCancelled
July 202552168.3%20.9%0.8%
August 202548774.7%14.6%0.0%
September 202544075.2%14.8%0.0%
October 202548774.3%13.3%2.5%
November 202544578.2%11.5%1.6%
December 202546873.5%15.2%0.4%
January 202646081.3%12.0%0.7%
February 202641582.7%9.2%0.2%
March 202647874.7%13.4%2.7%
April 202647684.0%9.2%0.2%
May 202649778.1%13.9%0.8%
June 202647680.0%13.0%0.0%

What drove SEA to LAS delay minutes?

Airline was the largest recorded SEA-to-LAS delay category, accounting for 39.9% of 67,936 BTS-attributed delay minutes during July 2025–June 2026.

Airline39.9%
Late aircraft32.4%
National airspace25.5%
Weather1.5%
Security0.7%
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.