Carrier route record
YXCMH→PHL
Republic Airways · Columbus to Philadelphia
- Flights
- 542
- Period
- July 2025 to June 2026
- Share of route
- 39%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.
Republic on CMH to PHL earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 542 flights, with a median arrival 12 minutes early.
Set against the rest of the country, Republic's CMH to PHL record is 9 points better than the US average of 77.6%. That gap is worth roughly 94 fewer late arrivals for every thousand flights.
Key figures
On time
87.0%
Arrivals under 15 minutes late, of 532 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
1.48%
National rate is 1.81%
Whole route
79.6%
Every carrier on CMH to PHL, 1,378 flights
These figures cover 542 flights between July 2025 and June 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
Republic against every carrier on CMH to PHL
Republic flew 542 of the 1,378 flights on CMH to PHL, about 39% of it. Its 87.0% on time is 7 points better than the route as a whole, which runs 79.6%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Republic at 87.0% to American at 72.5%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways (this page) | 542 | 87.0% | 58 min | 1.48% | A |
| PSA Airlinesthin sample | 346 | 77.9% | 71 min | 5.49% | B− |
| American Airlines | 490 | 72.5% | 94 min | 3.47% | C− |
Departure window
When Republic runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 542 flights.
- 5am–8am141 flights89.9%
- 8am–11am226 flights85.2%
- 11am–2pm89 flights87.5%
- 2pm–5pm11 flights—
- 5pm–8pm75 flights87.5%
- 8pm–5am—
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
The early departures do better, though not dramatically: 89.9% on time for the 5am–8am window against 85.2% for 8am–11am. Worth taking if the schedule allows, not worth an extra connection. The 8am–11am window is the busiest, with 226 flights scheduled in it.
Across the year
Republic on CMH to PHL through the year
July is the worst month at 70.6% on time, 24 points below February, the best at 94.4%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. April was the busiest month here, with 75 flights.
Across the week, Saturday is the strongest day at 95.5% on time and Friday the weakest at 82.9%. 13 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Republic runs late on this route
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 4,007 reported delay minutes.
- 37%Carrier
- 28%National Airspace System
- 24%Late-arriving aircraft
- 11%Extreme weather
Extreme weather accounts for 11% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.8 times the usual weather exposure. The split is drawn from 4,007 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,471 of the 4,007 delay minutes reported here.
Cancellations sit at 1.48% against a national 1.81%, which is ordinary. Diversions add another 0.37%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.6% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 407 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg runs 84.5% on time across 546 flights, within 3 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 542 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Republic on CMH to PHL
Put together: treat all of this as provisional. 542 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 87.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 532 completed flights over 12 months sit behind that.
Related
Where to go next
- CMH to PHL, every carrier
- Republic on PHL to CMH, the return leg
- PSA Airlines on CMH to PHL77.9%
- American Airlines on CMH to PHL72.5%
- Republic Airways network-wide record
- John Glenn Columbus International (CMH) delay statistics
- Philadelphia International (PHL) delay statistics
- Worst months to fly in the US, ranked by the data
- How to read this site: grades, sample sizes, and honest caveats
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.