Airport month record
CMHMAR
John Glenn Columbus International in March 2026
- Departures
- 4,010
- Month
- March 2026
- National, same month
- 75.7%
- Carriers
- 10
Historical statistics for March 2026, not live status or a forecast for this year’s March. For today’s conditions at CMH, see live FAA status.
CMH in March carries a cancellation problem, not just a delay problem: 3.2% of scheduled flights never operate, against 2.9% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 4,010 flights, of which Republic Airways flew 1,087 at 79.1% on time.
Key figures
On time
76.4%
Arrivals under 15 minutes late, of 3,870 completed departures
Avg delay
86 min
Across delayed arrivals only, not all flights
Cancelled
3.24%
Nationally in March: 2.90%
Whole year
80.1%
CMH across all twelve months
These figures cover 4,010 departures from John Glenn Columbus International in March 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
March next to CMH's other months
Against CMH's own year, March ran 4 points worse than the twelve-month rate of 80.1%, which makes it number ten of twelve months, best first. Cancellations are where March stands out: 3.24% of scheduled departures were called off, 1.6 times the airport's rate across the year. Either side of it, February ran 82.9% on time and April 84.2%, so a trip moved by a few weeks would have landed in a better stretch.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 | 3,933 | 73.3% | 79 min | 3.41% | C− |
| August 2025 | 3,758 | 82.1% | 68 min | 1.41% | B |
| September 2025 | 3,726 | 85.2% | 67 min | 0.51% | A+ |
| October 2025 | 4,031 | 81.1% | 67 min | 0.72% | B+ |
| November 2025 | 3,641 | 79.9% | 77 min | 1.81% | B |
| December 2025 | 3,567 | 70.7% | 75 min | 1.68% | C |
| January 2026 | 3,296 | 81.6% | 78 min | 6.28% | B− |
| February 2026 | 3,231 | 82.9% | 75 min | 2.72% | B |
| March 2026 (this page) | 4,010 | 76.4% | 86 min | 3.24% | B− |
| April 2026 | 3,713 | 84.2% | 72 min | 0.51% | B+ |
| May 2026 | 3,860 | 83.4% | 65 min | 1.22% | B |
| June 2026 | 3,876 | 81.0% | 78 min | 1.57% | B |
Departure window
The best time of day to leave CMH in March
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 25 points, against 4 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am1,115 flights87.3%
- 8am–11am744 flights79.9%
- 11am–2pm629 flights77.8%
- 2pm–5pm593 flights67.4%
- 5pm–8pm725 flights66.1%
- 8pm–5am204 flights62.1%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 62.1% on time, against 87.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 1,115 flights scheduled in it.
Across the week, Wednesday is the strongest day at 81.3% on time and Monday the weakest at 68.2%. 13 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at CMH in March
The two carriers here are closely matched: 4 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 1,224 | 75.6% | 70 min | 1.47% | B |
| Republic Airways | 1,087 | 79.1% | 70 min | 3.86% | B− |
| Envoy Airthin sample | 353 | 74.4% | 94 min | 2.55% | C |
| American Airlinesthin sample | 347 | 81.8% | 122 min | 1.44% | B |
| United Airlinesthin sample | 301 | 74.5% | 124 min | 2.33% | C |
| Delta Air Linesthin sample | 264 | 85.1% | 106 min | 3.03% | A− |
| SkyWest Airlinesthin sample | 138 | 71.1% | 139 min | 7.25% | C− |
| PSA Airlinesthin sample | 112 | 67.0% | 67 min | 8.04% | C− |
| Spirit Airlinesthin sample | 93 | 65.8% | 90 min | 18.28% | C− |
| Frontier Airlinesthin sample | 65 | 50.8% | 113 min | 6.15% | F− |
Republic Airways cancels 3.9% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Route by route
Busiest routes out of CMH in March
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| CMH to ORD · Chicago | 442 | 69.9% | 106 min | 5.20% | C− |
| CMH to LGA · New Yorkthin sample | 267 | 69.6% | 71 min | 9.74% | C− |
| CMH to ATL · Atlantathin sample | 247 | 80.7% | 88 min | 3.24% | B− |
| CMH to MCO · Orlandothin sample | 238 | 71.2% | 104 min | 4.62% | C− |
| CMH to DCA · Washingtonthin sample | 182 | 65.3% | 69 min | 3.30% | C− |
| CMH to CLT · Charlottethin sample | 179 | 80.5% | 93 min | 2.79% | B |
| CMH to BOS · Bostonthin sample | 178 | 83.3% | 58 min | 1.69% | B |
| CMH to EWR · Newarkthin sample | 155 | 84.3% | 62 min | 1.29% | B |
| CMH to JFK · New Yorkthin sample | 148 | 80.4% | 71 min | 2.03% | B |
| CMH to DFW · Dallas-Fort Worththin sample | 147 | 82.5% | 144 min | 1.36% | B |
| CMH to DEN · Denverthin sample | 147 | 74.0% | 87 min | 0.68% | C+ |
| CMH to MIA · Miamithin sample | 139 | 79.6% | 80 min | 1.44% | B |
| CMH to PHX · Phoenixthin sample | 128 | 84.8% | 85 min | 2.34% | B |
| CMH to FLL · Fort Lauderdalethin sample | 124 | 63.1% | 73 min | 10.48% | D− |
| CMH to IAD · Washingtonthin sample | 116 | 81.7% | 158 min | 0.86% | B+ |
| CMH to DTW · Detroitthin sample | 107 | 82.9% | 126 min | 1.87% | B |
| CMH to RSW · Fort Myersthin sample | 104 | 77.2% | 96 min | 1.92% | B |
| CMH to TPA · Tampathin sample | 102 | 76.5% | 57 min | 3.92% | B− |
| CMH to BWI · Baltimorethin sample | 91 | 85.6% | 60 min | 0.00% | A+ |
| CMH to MDW · Chicagothin sample | 89 | 65.9% | 62 min | 4.49% | C− |
| CMH to BNA · Nashvillethin sample | 82 | 81.5% | 46 min | 1.22% | B |
| CMH to LAS · Las Vegasthin sample | 82 | 80.5% | 71 min | 0.00% | B+ |
| CMH to MSP · Minneapolisthin sample | 68 | 83.3% | 167 min | 2.94% | B |
| CMH to STL · St. Louisthin sample | 58 | 74.1% | 100 min | 0.00% | C+ |
| CMH to PHL · Philadelphiathin sample | 58 | 78.2% | 66 min | 5.17% | B− |
Delay causes
What held CMH up in March
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 79,000 reported delay minutes.
- 34%Late-arriving aircraft
- 32%National Airspace System
- 29%Carrier
- 5%Extreme weather
- 0%Security
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 79,000 reported delay minutes here, that single category outweighs weather by 8 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 78,605 reported delay minutes.
Cancellations run at 3.24%, against 2.90% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.6% of arrivals land a full hour or more behind schedule, against 9.5% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
What to do with this
Flying from CMH in March
For a March trip through CMH: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 87.3% on time, and with 9.6% of arrivals an hour or more late, a connection here deserves more slack than the same trip in September would.
Related
Where to go next
- John Glenn Columbus International (CMH), the whole year
- CMH in July73.3%
- CMH in August82.1%
- CMH in September85.2%
- CMH in October81.1%
- CMH in November79.9%
- CMH in December70.7%
- CMH in January81.6%
- CMH in February82.9%
- CMH in April84.2%
- CMH in May83.4%
- CMH in June81.0%
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.