Route profile
BOS→CMH
Flight reliability, delays and best times to fly from Boston to Columbus, 640 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 60% of comparable major US routes (4,598 compared)
Calculated from 5,772 flights. How this is calculated · What counts as on time
BOS → CMH arrives on time 83.3% of the time; the return trip, CMH → BOS, arrives on time 84.3% of the time.
BOS → CMH spends 29.1 minutes on the ground on a 640-mile trip: 21.1 minutes from pushback to wheels-up at BOS and 8.0 minutes from touchdown to gate at CMH.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
This route holds up about the same all year, a steadier seasonal pattern than 98% of 3,357 comparable routes.
86.5% on time in its best month (January) against 78.8% in its worst (July).
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 3,357 in the comparison.
What sets this route apart
Where BOS to CMH differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
BOS to CMH is at its best against routes of similar length for flights scheduled at 6 PM: 78.3% arrive on time, 11.2 points ahead of the 67.1% those routes manage at that hour. Against all other routes the gap is 9.7 points.
BOS to CMH holds up on Sundays better than routes of similar length do: 82.3% on time to their 74.6%, a 7.7 points lead. Against all other routes the gap is 7.5 points.
June is kinder to BOS to CMH than to routes of similar length: 85.5% on time against 72.3%, 13.2 points better. Against all other routes the gap is 12.8 points.
BOS to CMH against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 6 PM departures | 78.3% | routes of similar length | 67.1% | +11.2 pts | 419 here, 138,470 there |
| Weekday: Sunday | 82.3% | routes of similar length | 74.6% | +7.7 pts | 814 here, 316,447 there |
| Month: June | 85.5% | routes of similar length | 72.3% | +13.2 pts | 496 here, 178,335 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 640 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
Why BOS → CMH flights are cancelled
July 2023 – July 2026
BOS → CMH cancelled 105 of 5,772 scheduled flights — about 1 in every 55. The reason filed most often was the air traffic system, 40.0% of the cancellations coded on this route — about 1 in every 137 scheduled flights.
Share of cancellations
Of 105 cancelled departures carrying a reason code.
What each reason means
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
42 cancellations, 40.0% of the total.
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
41 cancellations, 39.0% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
22 cancellations, 21.0% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. With only one or two carriers on the route, the split mostly reflects how they file. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
105 coded cancellations were recorded on BOS → CMH; the section appears from 50.
When it goes wrong
July 2023 – July 2026
41 min late
against a median of 11 min early
Percentiles over 5,772 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at CMH after arriving from BOS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 28% | High risk |
| 45 min | 16% | High risk |
| 60 min | 12% | Some risk |
| 90 min | 7.0% | Some risk |
| 120 min | 4.1% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.82% of the time and diverts 0.10% of the time, which a late arrival never shows up in.
Chance of missing is the share of 5,661 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 41 minutes late (90th-percentile gate arrival delay), over 5,772 operations.
Any other layover length: connection checker.
Best time to fly
BOS → CMH flights departing 5–9 AM arrived on time 92.7% of the time, against 72.5% for 6–9 PM departures, a gap of 20.2 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 94.8% on time from 177 flights
- 7 AM: 93.9% on time from 602 flights
- 8 AM: 91.5% on time from 879 flights
- 9 AM: 88.8% on time from 349 flights
- 10 AM: 85.0% on time from 181 flights
- 11 AM: 84.7% on time from 192 flights
- 12 PM: 88.4% on time from 253 flights
- 1 PM: 86.7% on time from 182 flights
- 2 PM: 84.5% on time from 754 flights
- 3 PM: 78.9% on time from 216 flights
- 4 PM: 74.5% on time from 222 flights
- 5 PM: 75.6% on time from 297 flights
- 6 PM: 78.3% on time from 431 flights
- 7 PM: 70.1% on time from 913 flights
- 8 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why BOS → CMH runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for BOS → CMH. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on BOS → CMH, at 55.1%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 92.7% of the time and 6–9 PM departures 72.5%.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Republic Airways | 4,871 | 84.2% | 1.89% | -12 min | 6.8% |
| Envoy Air | 769 | 77.5% | 1.04% | -6 min | 9.7% |
Republic Airways flew 86.4% of the 5,640 flights listed.
Republic Airways arrived on time 6.7 percentage points more often than Envoy Air on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Friday the least, a gap of 5.7 percentage points.
By month
- Jan: 86.5%
- Feb: 83.8%
- Mar: 85.7%
- Apr: 82.8%
- May: 80.0%
- Jun: 85.5%
- Jul: 78.8%
- Aug: 85.9%
- Sep: 80.5%
- Oct: 84.6%
- Nov: 86.2%
- Dec: 82.0%
July is historically the weakest month and January the strongest, a spread of 7.7 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 83.9% from 133 flights
- August 2023: 87.6% from 139 flights
- September 2023: 80.4% from 154 flights
- October 2023: 89.6% from 164 flights
- November 2023: 88.9% from 127 flights
- December 2023: too few flights to score (105)
- January 2024: too few flights to score (109)
- February 2024: too few flights to score (106)
- March 2024: too few flights to score (114)
- April 2024: 81.7% from 126 flights
- May 2024: 82.9% from 141 flights
- June 2024: 87.7% from 163 flights
- July 2024: 83.1% from 171 flights
- August 2024: 86.0% from 174 flights
- September 2024: 84.5% from 188 flights
- October 2024: 91.6% from 180 flights
- November 2024: 91.0% from 167 flights
- December 2024: 83.5% from 161 flights
- January 2025: 88.2% from 162 flights
- February 2025: 81.1% from 146 flights
- March 2025: 90.0% from 161 flights
- April 2025: 81.6% from 164 flights
- May 2025: 74.0% from 173 flights
- June 2025: 81.0% from 169 flights
- July 2025: 75.0% from 172 flights
- August 2025: 84.4% from 175 flights
- September 2025: 76.4% from 180 flights
- October 2025: 72.9% from 179 flights
- November 2025: 78.4% from 150 flights
- December 2025: 79.6% from 148 flights
- January 2026: 84.6% from 164 flights
- February 2026: 80.9% from 153 flights
- March 2026: 78.7% from 178 flights
- April 2026: 84.8% from 164 flights
- May 2026: 83.7% from 168 flights
- June 2026: 88.0% from 169 flights
- July 2026: 74.5% from 175 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 80.5% against 84.0% in the 12 months before — declining by 3.5 percentage points.
Data and methodology
Calculated by FlyerIntel from 5,772 BOS → CMH flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed