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

Seattle, WA (SEA) to Columbus, OH (CMH) flight delay odds

76.7% of 464 official scheduled SEA-to-CMH flights arrived on time; 11.6% arrived at least 30 minutes late and 0.4% 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 SIGNALGenerally reliable
76.7%arrived on time
11.6%30+ min late
0.4%cancelled
464scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.2%all scheduled flights
120+ minutes late1.1%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+2.3 mincompleted flights

Which departure time was most reliable for SEA to CMH?

Among qualifying SEA-to-CMH departure window results, Late morning had the highest on-time rate: 79.0% of 348 flights. Night was lowest at 69.8% across 116 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning34879.0%11.5%0.6%
Night11669.8%12.1%0.0%

Which weekday was most reliable for SEA to CMH?

Among qualifying SEA-to-CMH weekday results, Tuesday had the highest on-time rate: 88.9% of 54 flights. Friday was lowest at 70.8% across 72 flights.

DayFlightsOn time30+ minCancelled
Monday7270.8%16.7%0.0%
Tuesday5488.9%5.6%0.0%
Wednesday6680.3%13.6%0.0%
Thursday7281.9%11.1%0.0%
Friday7270.8%13.9%1.4%
Saturday5275.0%9.6%0.0%
Sunday7672.4%9.2%1.3%

Which airline was most reliable for SEA to CMH?

Only Alaska Airlines met the SEA-to-CMH airline threshold: 76.5% of 460 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines46076.5%11.7%0.4%
American Airlines1100.0%0.0%0.0%
Delta Air Lines1100.0%0.0%0.0%
United Airlines1100.0%0.0%0.0%
Southwest Airlines1100.0%0.0%0.0%

Which month was most reliable for SEA to CMH?

Among qualifying SEA-to-CMH month results, March 2026 had the highest on-time rate: 96.2% of 26 flights. July 2025 was lowest at 57.4% across 61 flights.

MonthFlightsOn time30+ minCancelled
July 20256157.4%14.8%0.0%
August 20255763.2%14.0%0.0%
September 20255176.5%7.8%0.0%
October 20253381.8%9.1%0.0%
November 20252986.2%13.8%0.0%
December 20253171.0%22.6%0.0%
January 20262479.2%12.5%8.3%
February 20262095.0%0.0%0.0%
March 20262696.2%3.8%0.0%
April 20263083.3%10.0%0.0%
May 20264575.6%17.8%0.0%
June 20265787.7%7.0%0.0%

What drove SEA to CMH delay minutes?

Late aircraft was the largest recorded SEA-to-CMH delay category, accounting for 33.8% of 4,305 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.5%
Late aircraft33.8%
National airspace28.9%
Weather4.8%
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.