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Route Reliability

Indianapolis → Seattle

IND–SEA · 1,866 miles · Indianapolis International Airport to Seattle–Tacoma International Airport

76
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
9 min
Average arrival delay
1.4%
Cancelled
564
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 75% of the time across 564 flights. No comparison to make.

What the data says

Morning-you made the right choice.

IND–SEA flights departing between 6–9 AM arrived on time 82% of the time, versus 68% between 6–9 PM.

Sunday scaries are real for this one.

IND–SEA flights arrived on time 79% of the time on Tuesdays. On Sundays: 70%.

Trending in the right direction.

IND–SEA flights arrived on time 81% of the time over the last three months in the data, compared with 66% 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
  • Mon75%(87 flights)
  • Tue79%(68 flights)
  • Wed73%(74 flights)
  • Thu78%(83 flights)
  • Fri75%(85 flights)
  • Sat73%(75 flights)
  • Sun70%(83 flights)
On-time by departure window
  • 6–9 AM82%(264 flights)
  • 9 AM–12 PM—(1 flights)
  • 6–9 PM68%(290 flights)
On-time trend by month
92%
May

Jun 68% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%59
July 202570%60
August 202566%59
September 202577%51
October 202587%46
November 202579%38
December 202555%40
January 202670%27
February 202673%26
March 202662%37
April 202690%50
May 202692%62

Keep nerding

Based on 564 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.