Route reliability record
EWR→GRR
Newark to Grand Rapids
- Flights
- 890
- Period
- September 2025 to August 2026
- Distance
- 605 mi
- Carriers
- 3
This route carries a cancellation problem, not just a delay problem: 5.2% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, more than four flights in five arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 890 EWR to GRR flights, with a median arrival 12 minutes early.
Best time to fly EWR to GRR: a 2pm–5pm departure, ideally on a Monday. Flights in that window arrived on time 90.9% of the time and Monday flights 87.7%, against 83.0% for the route overall.
Set against the rest of the country, this route's record is 6 points better than the US average of 77.3%. That gap is worth roughly 57 fewer late arrivals for every thousand flights.
Key figures
On time
83.0%
Arrivals under 15 minutes late, of 842 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
5.17%
National rate is 1.89%
Best carrier
Republic
83.0% on time across 870 flights
These figures cover 890 flights between September 2025 and August 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.
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Carrier by carrier
Which airline is most reliable on EWR to GRR
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 Airlinesthin sample | 2 | 100.0% | — | 0.00% | A+ |
| Allegiant Airthin sample | 18 | 83.3% | 41 min | 0.00% | B+ |
| Republic Airways | 870 | 83.0% | 58 min | 5.29% | B− |
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Best ways to make this trip
The most reliable ways to fly Newark to Grand Rapids
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. 1 of the top 2 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. EWR → GRRNewark to Grand Rapids | Republic Airways | 78.6% | 83.0% | 5.29% | 2pm–5pm, Mon (route) | — |
| 2. LGA → GRRNew York to Grand Rapids | Republic Airways | 73.0% | 77.8% | 6.12% | 8am–11am, Mon | — |
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 14 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am364 flights85.0%
- 11am–2pm69 flights77.9%
- 2pm–5pm94 flights90.9%
- 5pm–8pm202 flights82.1%
- 8pm–5am161 flights77.0%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 2pm–5pm slot at 90.9% on time, ahead of 8pm–5am at 77.0%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8am–11am window is the busiest, with 364 flights scheduled in it.
Explore
Filter EWR to GRR 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 EWR to GRR, the best departure window is 2pm–5pm at 90.9% on time and the worst is 8pm–5am at 77.0%, a wide gap of 13.9 points. All US flights leaving 2pm–5pm ran 71.9%.
- 5–8am—
- 8–11am85.0%
- 11am–2pm77.9%
- 2–5pm90.9%
- 5–8pm82.1%
- 8pm–5am77.0%
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 22 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.
September is the best month on the calendar at 94.0% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 101 flights.
Across the week, Monday is the strongest day at 87.7% on time and Sunday the weakest at 76.8%, a spread of 11 points.
Delay causes
Why this route gets delayed
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 8,257 reported delay minutes.
- 33%Late-arriving aircraft
- 32%National Airspace System
- 23%Carrier
- 12%Extreme weather
Extreme weather accounts for 12% 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 2.0 times the usual weather exposure. The split is drawn from 8,257 reported delay minutes.
Cancellations run at 5.17%, against 1.89% nationally. That is about one flight in twenty 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 actually costs
5.5% 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 about an hour, which a normal layover absorbs.
The 605 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 78.7% on time across 889 flights, 4 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 4 points of difference.
One caution: this is a thin sample. 890 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.
Work out the risk of missing a connection in GRR after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 5.17% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 2pm–5pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 842 completed flights over 12 months sit behind that.
Common questions
EWR to GRR questions
How often is EWR to GRR delayed?
About one flight in six arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 17.0% of the 890 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
How reliable is EWR to GRR compared with the rest of the country?
83.0% of flights arrive on time here against a national 77.3%, a difference of 6 points in its favour. That is worth a B− on this site's grading scale.
What time of day has the fewest delays on EWR to GRR?
The 2pm–5pm departure window is the strongest at 90.9% on time. The 8pm–5am window is the weakest at 77.0%, 14 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 March delays on EWR to GRR?
March is the weakest month at 72.4% on time, compared with 94.0% in September. Across the year that is 22 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
- GRR to EWR — the return legseparate record
- Newark Liberty International (EWR) delay statistics
- EWR to MCO, a related route77.9%
- ORD to GRR, a related route69.5%
- EWR to ATL, a related route76.9%
- United Airlines on-time record100.0%
- Allegiant Air on-time record83.3%
- Republic Airways on-time record83.0%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. EWR to GRR and GRR to EWR 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.