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Route Reliability

Columbus → Seattle

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

73
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
11 min
Average arrival delay
1.3%
Cancelled
467
Flights in the data

Data through May 2026.

Airlines on this route

  • Alaska Airlines71% on time · 463 flights
  • Delta Air Lines100% on time · 1 flights
  • American Airlines100% on time · 1 flights
  • Southwest Airlines0% 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.

CMH–SEA flights departing between 6–9 AM arrived on time 82% of the time, versus 66% between 6–9 PM.

Thursday is the weak spot.

CMH–SEA flights arrived on time 78% of the time on Tuesdays. On Thursdays: 68%.

Trending in the right direction.

CMH–SEA flights arrived on time 71% of the time over the last three months in the data, compared with 57% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon70%(70 flights)
  • Tue78%(59 flights)
  • Wed68%(66 flights)
  • Thu68%(66 flights)
  • Fri71%(75 flights)
  • Sat74%(53 flights)
  • Sun71%(72 flights)
On-time by departure window
  • 6–9 AM82%(153 flights)
  • 12–3 PM—(3 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM66%(304 flights)
On-time trend by month
73%
May

Jun 68% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%60
July 202567%60
August 202574%57
September 202589%52
October 202579%33
November 202583%29
December 202539%31
January 202657%21
February 202675%20
March 202668%25
April 202672%29
May 202673%44

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.