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

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

Historically, 81.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 5,649 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 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%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.