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

Indianapolis, IN (IND) to Boston, MA (BOS) flight delay odds

Historically, 76.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,016 flights.

HISTORICAL ROUTE SIGNALVariable
76.1%arrived on time
15.6%30+ min late
2.6%cancelled
2,016scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.3%all scheduled flights
120+ minutes late2.9%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+4.5 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning60989.7%4.9%1.6%
Late morning37184.9%10.0%0.8%
Afternoon44068.0%20.9%2.5%
Evening57662.7%26.6%4.5%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday30971.8%15.9%6.1%
Tuesday31273.4%17.6%2.9%
Wednesday30278.1%14.9%1.7%
Thursday30675.8%18.6%1.6%
Friday30876.9%15.6%1.0%
Saturday20087.5%5.5%0.5%
Sunday27973.1%17.9%3.6%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways1,96176.2%15.6%2.6%
Envoy Air3669.4%19.4%2.8%
Allegiant Air1883.3%11.1%0.0%
Delta Air Lines1100.0%0.0%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202517766.1%26.6%3.4%
August 202517277.3%14.5%1.7%
September 202516059.4%30.0%2.5%
October 202517362.4%30.1%1.7%
November 202516282.1%12.3%1.9%
December 202516071.9%16.2%1.2%
January 202616977.5%10.1%7.1%
February 202615774.5%10.8%8.3%
March 202617483.3%10.3%2.3%
April 202616887.5%7.1%0.0%
May 202616786.2%6.6%0.6%
June 202617784.7%12.4%0.6%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline17.9%
Late aircraft26.9%
National airspace51.2%
Weather3.9%
Security0.2%
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.