Carrier route record
YXORD→LGA
Republic Airways · Chicago to New York
- Flights
- 1,284
- Period
- September 2025 to August 2026
- Share of route
- 11%
- Carriers
- 6
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Republic Airways.
Republic on ORD to LGA carries a cancellation problem, not just a delay problem: 8.6% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about seven flights in ten arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,284 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 2,309 at 68.7% on time.
The national on-time rate over the same period is 77.3%, so Republic on ORD to LGA runs 6 points behind the country as a whole. Across a thousand flights that is about 58 extra late arrivals.
Key figures
On time
71.5%
Arrivals under 15 minutes late, of 1,168 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
8.64%
National rate is 1.89%
Whole route
66.6%
Every carrier on ORD to LGA, 11,630 flights
These figures cover 1,284 flights between September 2025 and August 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Republic against every carrier on ORD to LGA
Republic flew 1,284 of the 11,630 flights on ORD to LGA, about 11% of it. Its 71.5% on time is 5 points better than the route as a whole, which runs 66.6%. Ranked by on-time rate it is first of six carriers on the route, where the range runs from Republic at 71.5% to Spirit at 48.8%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The three carriers here are closely matched: 3 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 |
|---|---|---|---|---|---|
| Republic Airways (this page) | 1,284 | 71.5% | 69 min | 8.64% | C− |
| Delta Air Lines | 2,309 | 68.7% | 96 min | 5.89% | C− |
| United Airlines | 4,671 | 66.1% | 83 min | 3.98% | C− |
| American Airlines | 2,990 | 65.6% | 80 min | 4.65% | C− |
| SkyWest Airlinesthin sample | 92 | 61.0% | 69 min | 16.30% | D− |
| Spirit Airlinesthin sample | 284 | 48.8% | 101 min | 9.86% | F− |
Delta Air Lines cancels 5.9% 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.
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Departure window
When Republic runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against 3 points between the best and worst carrier.
- 5am–8am275 flights80.5%
- 8am–11am288 flights71.3%
- 11am–2pm208 flights67.4%
- 2pm–5pm259 flights67.7%
- 5pm–8pm200 flights70.5%
- 8pm–5am54 flights63.6%
Scale runs 55% to 85%.
The 8pm–5am window is where this operation falls apart: 63.6% on time, against 80.5% 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 8am–11am window is the busiest, with 288 flights scheduled in it.
Across the year
Republic on ORD to LGA through the year
- Jul–Sep 20258 flights—
- Oct–Dec 2025194 flights64.1%
- Jan–Mar 2026978 flights73.9%
- Apr–Jun 202692 flights64.3%
- Jul–Sep 202612 flights—
Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 71.5% on time across 1,284 flights.
Quarter by quarter Republic on ORD to LGA held fairly steady: 64.1% in Oct–Dec 2025, 73.9% in Jan–Mar 2026 and 64.3% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
Across the week, Tuesday is the strongest day at 80.4% on time and Monday the weakest at 64.9%, a spread of 16 points.
Arrival by arrival
How late Republic on ORD to LGA runs when it is late
Republic on ORD to LGA often beats the schedule: 443 of 1,168 completed flights, 38%, arrived 15 minutes or more early. The 333 late arrivals split 106 under half an hour, 105 between 30 and 60 minutes, and 122 an hour or more.
- 15+ min early443 flights37.9%
- Within 15 min392 flights33.6%
- 15–29 min late106 flights9.1%
- 30–59 min late105 flights9.0%
- 1–2 hours late74 flights6.3%
- 2+ hours late48 flights4.1%
Scale runs 0% to 100%.
Share of 1,168 completed flights by arrival against schedule.
52 of 288 late departures made up the time and arrived on time, 18% of them. In the other direction, 97 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at LGA.
The worst days
Worst days for Republic on ORD to LGA
The latest arrival of the period was on 28 December 2025, 7 hours 52 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in December 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 December 2025 | 7 hours 52 minutes | Late-arriving aircraft |
| 29 November 2025 | 7 hours 36 minutes | Extreme weather |
| 28 December 2025 | 6 hours 29 minutes | Late-arriving aircraft |
| 30 December 2025 | 6 hours 8 minutes | Late-arriving aircraft |
| 26 January 2026 | 5 hours 18 minutes | Carrier |
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 23,000 reported delay minutes.
- 35%Late-arriving aircraft
- 33%National Airspace System
- 23%Carrier
- 9%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 23,000 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 22,935 reported delay minutes.
33% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 7,635 minutes out of 23,000, against a national NAS share of 21%.
Cancellations run at 8.64%, against 1.89% nationally. That is about one flight in twelve 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.
Connections and stage length
What a delay here costs
10.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 733 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 68.3% on time across 1,285 flights, 3 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.
The sample behind these figures is 1,284 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Republic on ORD to LGA
Put together: the delay figures matter less here than the 8.64% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,168 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to LGA, every carrier
- Republic on LGA to ORD, the return leg
- Delta Air Lines on ORD to LGA68.7%
- United Airlines on ORD to LGA66.1%
- American Airlines on ORD to LGA65.6%
- Spirit Airlines on ORD to LGA48.8%
- Republic Airways network-wide record
- Chicago O'Hare International (ORD) delay statistics
- LaGuardia (LGA) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.