Carrier route record

YXORD→EWR

Republic Airways · Chicago to Newark

Flights: 102
Period: July 2025 to June 2026
Share of route: 2%
Carriers: 5

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.

Republic on ORD to EWR draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 102 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 657 at 79.3% on time.

Envoy Air is the most reliable of the three carriers covered here at 79.3% on time across 657 flights.

On time

60.2%

Arrivals under 15 minutes late, of 93 completed flights

Avg delay

83 min

Across delayed arrivals only, not all flights

Cancelled

7.84%

National rate is 1.81%

Whole route

69.4%

Every carrier on ORD to EWR, 6,044 flights

These figures cover 102 flights between July 2025 and June 2026. Beyond the headline rate, 19.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

Republic against every carrier on ORD to EWR

Republic flew 102 of the 6,044 flights on ORD to EWR, about 2% of it. Its 60.2% on time is 9 points worse than the route as a whole, which runs 69.4%. Ranked by on-time rate it is number three of five carriers on the route, where the range runs from Envoy at 79.3% to Spirit at 43.2%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. Envoy Air arrives on time 79.3% of the time; American Airlines manages 55.6%. Sample sizes sit next to every figure, because a two-point gap across 737 flights means less than a ten-point one.

On-time performance by carrier on ORD to EWR
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air	657	79.3%	62 min	5.18%	B−
United Airlines	4,391	71.3%	86 min	2.37%	C
Republic Airways (this page)thin sample	102	60.2%	83 min	7.84%	D−
American Airlines	737	55.6%	83 min	3.80%	D−
Spirit Airlinesthin sample	157	43.2%	80 min	14.65%	F−

Envoy Air cancels 5.2% 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.

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 102 flights.

5am–8am—
8am–11am—
11am–2pm62 flights58.6%
2pm–5pm36 flights58.1%
5pm–8pm4 flights—
8pm–5am—

Scale runs 50% to 65%. Rows with fewer than 30 flights show a dash.

The 11am–2pm window is the strongest at 58.6% on time. The full set of windows spans half a point.

Across the year

Republic on ORD to EWR through the year

Oct–Dec 202547 flights50.0%
Jan–Mar 202650 flights68.2%
Apr–Jun 20265 flights—

Scale runs 40% to 75%. 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 60.2% on time across 102 flights.

Split by quarter, Republic on ORD to EWR logged 47 flights in Oct–Dec 2025, 50 flights in Jan–Mar 2026 and 5 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 60.2% annual figure is the one to use.

Delay causes

Why Republic runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 3,060 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
53%
National Airspace System
27%
Carrier
11%
Extreme weather
9%

53% 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 3,060 reported delay minutes here, that single category outweighs weather by 6 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 3,060 reported delay minutes.

Cancellations run at 7.84%, against 1.81% 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 19.4% of arrivals land a full hour or more behind schedule, against 8.1% 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.

The 719 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 52.8% on time across 102 flights, 7 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 7 points of difference.

One caution: this is a thin sample. 102 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 ORD to EWR

Put together: the delay figures matter less here than the 7.84% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 93 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures