BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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LAS→SEA

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

81.4% of 5,649 official scheduled LAS-to-SEA flights arrived on time; 10.3% arrived at least 30 minutes late and 0.9% 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 SIGNALLower disruption
81.4%arrived on time
10.3%30+ min late
0.9%cancelled
5,649scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.5%all scheduled flights
120+ minutes late2.1%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+1.7 mincompleted flights

Which departure time was most reliable for LAS to SEA?

Among qualifying LAS-to-SEA departure window results, Early morning had the highest on-time rate: 87.7% of 1,340 flights. Night was lowest at 66.5% across 346 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,34087.7%5.7%1.0%
Late morning1,24287.1%6.7%0.9%
Afternoon1,59778.6%12.3%0.9%
Evening1,12476.1%13.7%1.1%
Night34666.5%21.7%0.9%

Which weekday was most reliable for LAS to SEA?

Among qualifying LAS-to-SEA weekday results, Wednesday had the highest on-time rate: 85.9% of 736 flights. Friday was lowest at 74.6% across 850 flights.

DayFlightsOn time30+ minCancelled
Monday86781.1%9.9%0.7%
Tuesday77185.5%7.7%0.9%
Wednesday73685.9%7.1%0.5%
Thursday84680.6%10.3%0.5%
Friday85074.6%16.1%1.9%
Saturday72584.8%8.1%1.2%
Sunday85478.8%12.2%0.8%

Which airline was most reliable for LAS to SEA?

Among qualifying LAS-to-SEA airline results, Spirit Airlines had the highest on-time rate: 88.4% of 43 flights. Southwest Airlines was lowest at 70.6% across 977 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines2,63881.8%9.4%1.3%
Delta Air Lines1,73886.8%8.1%0.9%
Southwest Airlines97770.6%16.5%0.3%
Frontier Airlines24680.9%11.8%0.8%
Spirit Airlines4388.4%11.6%0.0%
SkyWest Airlines785.7%14.3%0.0%

Which month was most reliable for LAS to SEA?

Among qualifying LAS-to-SEA month results, February 2026 had the highest on-time rate: 92.5% of 415 flights. October 2025 was lowest at 75.9% across 485 flights.

MonthFlightsOn time30+ minCancelled
July 202552179.8%12.3%1.0%
August 202548976.5%14.7%0.0%
September 202544181.9%11.1%0.2%
October 202548575.9%13.4%2.5%
November 202544583.4%9.2%1.8%
December 202546876.9%13.0%0.6%
January 202645986.5%6.8%0.4%
February 202641592.5%3.6%0.7%
March 202647884.7%6.7%2.5%
April 202647583.6%8.8%0.4%
May 202649679.8%10.9%0.8%
June 202647777.4%12.2%0.2%

What drove LAS to SEA delay minutes?

Late aircraft was the largest recorded LAS-to-SEA delay category, accounting for 46.1% of 62,284 BTS-attributed delay minutes during July 2025–June 2026.

Airline36.5%
Late aircraft46.1%
National airspace14.8%
Weather2.5%
Security0.1%
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.