Best time to fly Lihue to Seattle

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full LIH to SEA record →

Best month

July

90.9% on time · 93 flights

Worst month

December

65.5% on time · 93 flights

Month Flights On time Cancelled When late, by
January 93 88.8% 1.08% 113 min
February 84 83.1% 1.19% 49 min
March 93 84.3% 4.3% 91 min
April 90 88.9% 0% 45 min
May 93 82.4% 1.08% 68 min
June 90 82.2% 0% 59 min
July 93 90.9% 5.38% 109 min
August 93 90.3% 0% 66 min
September 90 87.6% 1.11% 59 min
October 93 87.8% 3.23% 29 min
November 89 82.6% 2.25% 76 min
December 93 65.5% 6.45% 72 min

What a seasonal pattern can and cannot tell you

Months differ for reasons that repeat — summer thunderstorms in the American interior, winter fog and de-icing in northern Europe, school holidays filling every seat and leaving no slack in the schedule. Those are real and they come back each year.

What the pattern cannot do is forecast a particular flight. A quiet month has late days and a bad month has punctual ones. Treat this as a way to choose between two dates you are indifferent about, not as a promise.