Carrier performance at one airport
UA→EWR
United Airlines at Newark Liberty International
- Departures
- 67,201
- Period
- June 2025 to May 2026
- Routes
- 25
- Rank here
- #5 of 10
United Airlines at Newark lands a B, about a point worse than the national rate of 77.4%. About one flight in four arrive 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 67,201 flights, of which Republic Airways flew 22,956 at 82.9% on time.
Measured against the airport rather than the country, United Airlines runs half a point behind the 77.3% weighted average across all carriers at EWR. That is the comparison worth making: every operator here works the same runways, the same airspace and the same weather.
Key figures
On time
76.6%
65,643 completed departures
Avg delay
76 min
Across delayed flights only
Cancelled
2.04%
At EWR, this carrier only
Rank here
#5
Of 10 carriers clearing the floor at EWR
These figures cover 67,000 flights between June 2025 and May 2026. Beyond the headline rate, 9.4% 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.
Against the competition
Every carrier at EWR, ranked
The choice of carrier is not cosmetic here. Republic Airways arrives on time 82.9% of the time; Frontier Airlines manages 68.5%. Sample sizes sit next to every figure, because a two-point gap across 1,151 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways | 22,956 | 82.9% | 71 min | 4.86% | B− |
| Allegiant Air | 610 | 79.6% | 81 min | 1.31% | B |
| American Airlines | 6,336 | 79.5% | 96 min | 3.66% | B− |
| Delta Air Lines | 6,661 | 78.0% | 97 min | 3.50% | B− |
| United Airlines (this page) | 67,201 | 76.6% | 76 min | 2.04% | B |
| JetBlue Airways | 5,189 | 73.6% | 83 min | 3.10% | C− |
| Envoy Air | 722 | 73.4% | 88 min | 5.12% | C− |
| Alaska Airlines | 3,109 | 72.5% | 69 min | 2.38% | C |
| Spirit Airlines | 8,204 | 70.0% | 83 min | 6.34% | C− |
| Frontier Airlines | 1,151 | 68.5% | 98 min | 3.04% | C− |
Spirit Airlines cancels 6.3% 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
Where United Airlines flies from EWR
United Airlines operates 25 routes out of EWR with enough volume to report. Route records inside one carrier at one airport still spread widely, because a short shuttle and a transcontinental have very different exposure to a late inbound.
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| EWR to ORD · Chicago | 4,330 | 71.1% | 75 min | 2.12% | C |
| EWR to MCO · Orlando | 3,979 | 78.5% | 77 min | 1.81% | B |
| EWR to SFO · San Francisco | 3,753 | 70.5% | 95 min | 2.66% | C |
| EWR to LAX · Los Angeles | 3,530 | 72.3% | 83 min | 2.12% | C |
| EWR to IAH · Houston | 3,469 | 79.4% | 76 min | 1.70% | B |
| EWR to DEN · Denver | 3,299 | 77.9% | 74 min | 1.33% | B |
| EWR to PBI · West Palm Beach | 2,747 | 78.4% | 70 min | 1.97% | B |
| EWR to BOS · Boston | 2,672 | 70.7% | 80 min | 3.11% | C− |
| EWR to FLL · Fort Lauderdale | 2,640 | 77.6% | 69 min | 2.20% | B |
| EWR to LAS · Las Vegas | 2,465 | 81.0% | 73 min | 1.42% | B |
| EWR to TPA · Tampa | 2,340 | 80.4% | 70 min | 2.14% | B |
| EWR to MIA · Miami | 2,221 | 77.0% | 73 min | 2.21% | B |
| EWR to ATL · Atlanta | 1,906 | 77.0% | 86 min | 2.52% | B |
| EWR to DFW · Dallas-Fort Worth | 1,704 | 80.4% | 78 min | 2.76% | B |
| EWR to RSW · Fort Myers | 1,703 | 80.2% | 66 min | 1.76% | B |
| EWR to AUS · Austin | 1,700 | 79.2% | 76 min | 1.71% | B |
| EWR to RDU · Raleigh | 1,504 | 75.9% | 70 min | 2.19% | B |
| EWR to PHX · Phoenix | 1,482 | 81.0% | 68 min | 1.89% | B |
| EWR to IAD · Washington | 1,433 | 72.7% | 76 min | 2.23% | C |
| EWR to CLE · Cleveland | 1,403 | 73.5% | 85 min | 2.14% | C |
| EWR to BNA · Nashville | 1,355 | 75.0% | 67 min | 2.36% | B |
| EWR to SAN · San Diego | 1,225 | 80.8% | 67 min | 1.47% | B |
| EWR to JAX · Jacksonville | 1,138 | 80.2% | 81 min | 1.67% | B |
| EWR to SJU · San Juan | 1,113 | 70.3% | 74 min | 2.52% | C |
| EWR to SNA · Santa Ana | 1,092 | 85.4% | 54 min | 1.37% | A |
Departure window
Best time of day for this operation
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 22 points, against 14 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am11,453 flights89.2%
- 8am–11am12,097 flights80.7%
- 11am–2pm9,434 flights80.0%
- 2pm–5pm13,256 flights72.3%
- 5pm–8pm12,071 flights69.3%
- 8pm–5am8,890 flights67.4%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.2% of the time, against 67.4% for the overnight window. That is 22 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on.
Across the year
Seasonal pattern
July is the worst month at 67.7% on time, 17 points below April, the best at 84.9%. 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.
Delay causes
What holds this operation up
- 39%Late-arriving aircraft
- 28%National Airspace System
- 28%Carrier
- 6%Extreme weather
- 0%Security
39% 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 1.17 million reported delay minutes here, that single category outweighs weather by 7 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.
Cancellations sit at 2.04% against a national 1.80%, which is ordinary. Diversions add another 0.28%.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.4% of arrivals land a full hour or more behind schedule, against 8.2% 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.
67,201 flights sit behind these numbers, which is a large enough sample that the headline rate is not moving on noise. Where a sub-group falls below 30 flights the site shows a dash instead of a percentage.
Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 84.9% on time and July 67.7%, a swing of 17 points. If the dates move at all, move them out of July before you think about anything else.
Common questions
United Airlines at EWR
How often is United Airlines at EWR delayed?
About one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 23.4% of the 67,201 flights in this analysis, against 22.6% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on United Airlines at EWR?
Republic Airways leads at 82.9% on time across 22,956 flights. Frontier Airlines is at the other end on 68.5%, a gap of 14 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on United Airlines at EWR?
The 5am–8am departure window is the strongest at 89.2% on time. The 8pm–5am window is the weakest at 67.4%, 22 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are July delays on United Airlines at EWR?
July is the weakest month at 67.7% on time, compared with 84.9% in April. Across the year that is 17 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- United Airlines network-wide record
- Newark Liberty International (EWR) all carriers
- EWR to ORD route record71.1%
- EWR to MCO route record78.5%
- EWR to SFO route record70.5%
- EWR to LAX route record72.3%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, June 2025 to May 2026. Updated monthly. How this data is collected.