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

Lewiston, ID (LWS) to Seattle, WA (SEA) flight delay odds

90.9% of 364 official scheduled LWS-to-SEA flights arrived on time; 5.8% arrived at least 30 minutes late and 0.3% 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
90.9%arrived on time
5.8%30+ min late
0.3%cancelled
364scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.3%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.8%did not reach as scheduled
Average arrival-4.8 mincompleted flights

Which departure time was most reliable for LWS to SEA?

Only Early morning met the LWS-to-SEA departure window threshold: 91.2% of 340 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Early morning34091.2%5.9%0.3%

Which weekday was most reliable for LWS to SEA?

Among qualifying LWS-to-SEA weekday results, Wednesday had the highest on-time rate: 94.1% of 51 flights. Thursday was lowest at 88.5% across 52 flights.

DayFlightsOn time30+ minCancelled
Monday5288.5%3.8%1.9%
Tuesday5390.6%7.5%0.0%
Wednesday5194.1%2.0%0.0%
Thursday5288.5%9.6%0.0%
Friday5290.4%5.8%0.0%
Saturday5292.3%5.8%0.0%
Sunday5292.3%5.8%0.0%

Which airline was most reliable for LWS to SEA?

Only SkyWest Airlines met the LWS-to-SEA airline threshold: 90.9% of 364 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines36490.9%5.8%0.3%

Which month was most reliable for LWS to SEA?

Among qualifying LWS-to-SEA month results, July 2025 had the highest on-time rate: 100.0% of 31 flights. December 2025 was lowest at 80.6% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 202531100.0%0.0%0.0%
August 20253096.7%3.3%0.0%
September 20253093.3%6.7%0.0%
October 20253190.3%9.7%0.0%
November 20253083.3%6.7%0.0%
December 20253180.6%16.1%0.0%
January 20263187.1%9.7%3.2%
February 20262882.1%7.1%0.0%
March 20263193.5%0.0%0.0%
April 20263096.7%3.3%0.0%
May 20263196.8%3.2%0.0%
June 20263090.0%3.3%0.0%

What drove LWS to SEA delay minutes?

Airline was the largest recorded LWS-to-SEA delay category, accounting for 64.6% of 2,282 BTS-attributed delay minutes during July 2025–June 2026.

Airline64.6%
Late aircraft0.0%
National airspace6.1%
Weather29.3%
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.