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

Seattle, WA (SEA) to Indianapolis, IN (IND) flight delay odds

73.1% of 565 official scheduled SEA-to-IND flights arrived on time; 14.5% arrived at least 30 minutes late and 1.2% 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
73.1%arrived on time
14.5%30+ min late
1.2%cancelled
565scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.4%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+3.0 mincompleted flights

Which departure time was most reliable for SEA to IND?

Among qualifying SEA-to-IND departure window results, Late morning had the highest on-time rate: 73.7% of 353 flights. Night was lowest at 72.2% across 212 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning35373.7%14.4%1.7%
Night21272.2%14.6%0.5%

Which weekday was most reliable for SEA to IND?

Among qualifying SEA-to-IND weekday results, Wednesday had the highest on-time rate: 77.9% of 77 flights. Friday was lowest at 65.9% across 88 flights.

DayFlightsOn time30+ minCancelled
Monday8777.0%16.1%0.0%
Tuesday7075.7%14.3%0.0%
Wednesday7777.9%13.0%0.0%
Thursday8476.2%13.1%1.2%
Friday8865.9%17.0%3.4%
Saturday7167.6%14.1%1.4%
Sunday8871.6%13.6%2.3%

Which airline was most reliable for SEA to IND?

Only Alaska Airlines met the SEA-to-IND airline threshold: 73.1% of 565 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines56573.1%14.5%1.2%

Which month was most reliable for SEA to IND?

Among qualifying SEA-to-IND month results, February 2026 had the highest on-time rate: 88.0% of 25 flights. July 2025 was lowest at 50.8% across 61 flights.

MonthFlightsOn time30+ minCancelled
July 20256150.8%26.2%0.0%
August 20255954.2%25.4%0.0%
September 20255170.6%9.8%0.0%
October 20254881.2%4.2%6.2%
November 20253987.2%7.7%0.0%
December 20254168.3%22.0%0.0%
January 20262972.4%17.2%6.9%
February 20262588.0%12.0%0.0%
March 20263979.5%12.8%2.6%
April 20265186.3%7.8%0.0%
May 20266283.9%8.1%0.0%
June 20266071.7%16.7%1.7%

What drove SEA to IND delay minutes?

Airline was the largest recorded SEA-to-IND delay category, accounting for 46.5% of 6,263 BTS-attributed delay minutes during July 2025–June 2026.

Airline46.5%
Late aircraft36.4%
National airspace17.1%
Weather0.0%
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.