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Route Reliability

Seattle → Columbus

SEA–CMH · 2,016 miles · Seattle–Tacoma International Airport to John Glenn Columbus International Airport

82
Pretty Reliable
WanderNerd Reliability Score
76%
Arrive within 15 minutes
5 min
Average arrival delay
0.4%
Cancelled
467
Flights in the data

Data through May 2026.

Airlines on this route

  • Alaska Airlines76% on time · 463 flights
  • Delta Air Lines100% on time · 1 flights
  • American Airlines100% on time · 1 flights
  • Southwest Airlines100% on time · 1 flights
  • United Airlines100% on time · 1 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

SEA–CMH flights departing between 9 AM–12 PM arrived on time 80% of the time, versus 64% between 9 PM–12 AM.

Mondays have been rough.

SEA–CMH flights arrived on time 89% of the time on Tuesdays and just 67% on Mondays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon67%(72 flights)
  • Tue89%(54 flights)
  • Wed79%(66 flights)
  • Thu81%(72 flights)
  • Fri70%(71 flights)
  • Sat74%(53 flights)
  • Sun75%(76 flights)
On-time by departure window
  • 9 AM–12 PM80%(345 flights)
  • 9 PM–12 AM64%(119 flights)
On-time trend by month
78%
May

Jun 65% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%60
July 202559%61
August 202567%57
September 202578%51
October 202582%33
November 202586%29
December 202571%31
January 202686%22
February 2026100%19
March 202696%26
April 202690%30
May 202678%45

Keep nerding

Based on 467 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.