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

Los Angeles, CA (LAX) to Seattle, WA (SEA) flight delay odds

Historically, 84.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 7,424 flights.

HISTORICAL ROUTE SIGNALLower disruption
84.4%arrived on time
8.8%30+ min late
1.0%cancelled
7,424scheduled 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 late1.8%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival-2.5 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 morning1,31788.4%5.0%1.2%
Late morning1,50686.3%8.4%1.1%
Afternoon2,00983.2%9.5%1.1%
Evening2,34682.3%10.4%0.6%
Night24681.7%9.8%1.6%

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
Monday1,13485.6%7.9%1.2%
Tuesday1,01388.3%7.0%0.4%
Wednesday1,00286.5%7.1%0.4%
Thursday1,11982.9%9.8%0.8%
Friday1,09679.5%11.8%1.6%
Saturday94586.5%7.9%0.8%
Sunday1,11582.4%9.3%1.4%

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 Airlines3,27984.2%7.7%1.1%
Delta Air Lines2,22486.0%8.9%0.8%
SkyWest Airlines1,23983.9%10.3%0.6%
United Airlines39584.6%9.1%0.5%
Frontier Airlines27676.8%12.3%3.6%
American Airlines1181.8%18.2%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202564279.1%12.0%1.6%
August 202563380.4%11.7%0.6%
September 202560692.1%3.3%0.5%
October 202561287.6%6.7%1.0%
November 202560489.4%5.5%1.2%
December 202562980.3%11.0%1.4%
January 202656285.1%9.1%1.1%
February 202655586.8%7.6%0.4%
March 202663882.9%10.0%2.4%
April 202661386.9%6.2%0.8%
May 202667985.4%8.0%0.4%
June 202665178.2%13.4%0.5%

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.

Airline51.8%
Late aircraft33.2%
National airspace13.5%
Weather1.3%
Security0.2%
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.