Route reliability record
DEN→EWR
Denver to Newark
- Flights
- 3,344
- Period
- September 2025 to August 2026
- Distance
- 1,605 mi
- Carriers
- 1
This route lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 3,344 DEN to EWR flights, with a median arrival 9 minutes early.
Best time to fly DEN to EWR: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 92.9% of the time and Tuesday flights 83.0%, against 78.8% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.8%
Arrivals under 15 minutes late, of 3,258 completed flights
Avg delay
83 min
Across delayed arrivals only, not all flights
Cancelled
1.53%
National rate is 1.89%
Best carrier
United
78.8% on time across 3,344 flights
These figures cover 3,344 flights between September 2025 and August 2026. Beyond the headline rate, 8.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on DEN to EWR
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 |
|---|---|---|---|---|---|
| United Airlines | 3,344 | 78.8% | 83 min | 1.53% | B |
Flight by flight
Flights on DEN to EWR
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Best ways to make this trip
The most reliable ways to fly Denver to Newark
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 4 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. DEN → JFKDenver to New York | Delta Air Lines | 85.6% | 87.7% | 2.45% | 8pm–5am, Fri | DL 336 06:40 |
| 2. DEN → EWRDenver to Newark | United Airlines | 77.6% | 78.8% | 1.53% | 5am–8am, Tue | UA 2345 06:00 |
| 3. DEN → LGADenver to New York | Delta Air Lines | 75.8% | 79.7% | 4.84% | 5am–8am, Sat | DL 398 07:10 |
| 4. DEN → LGADenver to New York | United Airlines | 72.2% | 73.5% | 1.78% | 8am–11am, Sat | UA 1442 08:15 |
| 5. DEN → JFKDenver to New York | JetBlue Airways | 63.2% | 67.3% | 6.06% | 11am–2pm, Tue | B6 98 23:59 |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 26 points, against half a point between the best and worst carrier.
- 5am–8am617 flights92.9%
- 8am–11am422 flights82.3%
- 11am–2pm1,003 flights73.0%
- 2pm–5pm441 flights67.1%
- 5pm–8pm498 flights70.3%
- 8pm–5am363 flights91.9%
Scale runs 60% to 100%.
Book the early departure. Flights leaving between 5am–8am arrive on time 92.9% of the time, against 67.1% for the afternoon window. That is 26 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 1,003 flights scheduled in it.
Explore
Filter DEN to EWR by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On DEN to EWR, the best departure window is 5am–8am at 92.9% on time and the worst is 2pm–5pm at 67.1%, a wide gap of 25.8 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am92.9%
- 8–11am82.3%
- 11am–2pm73.0%
- 2–5pm67.1%
- 5–8pm70.3%
- 8pm–5am91.9%
best all US flightsScale 60% to 95%.
Across the year
When delays peak on this route
This route's year swings by 26 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
July is the worst month at 63.8% on time, 26 points below April, the best at 89.3%. 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. July was the busiest month here, with 306 flights.
Across the week, Tuesday is the strongest day at 83.0% on time and Sunday the weakest at 73.1%, a spread of 10 points.
Delay causes
Why this route gets delayed
National Airspace System accounts for 44% of the 58,000 delay minutes carriers reported here, and the remaining four split what is left.
- 44%National Airspace System
- 32%Late-arriving aircraft
- 24%Carrier
- 1%Extreme weather
- 0%Security
44% 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 25,000 minutes out of 58,000, against a national NAS share of 21%. The split is drawn from 57,593 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 92.9% on time here.
Cancellations sit at 1.53% against a national 1.89%, which is ordinary. Diversions add another 1.05%.
Connections and stage length
What a delay here actually costs
8.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
At 1,605 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 77.6% on time across 3,349 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 3,344 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.
Work out the risk of missing a connection in EWR after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 89.3% on time and July 63.8%, a swing of 26 points. If the dates move at all, move them out of July before you think about anything else. 3,258 completed flights over 12 months sit behind that.
Common questions
DEN to EWR questions
How often is DEN to EWR delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 21.2% of the 3,344 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
How reliable is DEN to EWR compared with the rest of the country?
78.8% of flights arrive on time here against a national 77.3%, a difference of 2 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on DEN to EWR?
The 5am–8am departure window is the strongest at 92.9% on time. The 2pm–5pm window is the weakest at 67.1%, 26 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 DEN to EWR?
July is the weakest month at 63.8% on time, compared with 89.3% in April. Across the year that is 26 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
- EWR to DEN — the return legseparate record
- Denver International (DEN) delay statistics
- Newark Liberty International (EWR) delay statistics
- DEN to PHX, a related route75.6%
- MCO to EWR, a related route75.0%
- DEN to SLC, a related route78.2%
- United Airlines on-time record78.8%
- The best time of day to fly, according to 7.05 million flight records
- Connecting flights: how much buffer the data says you need
Direction matters. DEN to EWR and EWR to DEN are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.