Carrier route record
NKEWR→MIA
Spirit Airlines · Newark to Miami
- Flights
- 247
- Period
- September 2025 to August 2026
- Share of route
- 6%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Spirit Airlines.
Spirit on EWR to MIA draws a D−. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 247 flights. The strongest carrier on the route with a full sample, American Airlines, flew 1,429 at 81.3% on time.
The national on-time rate over the same period is 77.3%, so Spirit on EWR to MIA runs 18 points behind the country as a whole. Across a thousand flights that is about 181 extra late arrivals.
Key figures
On time
59.2%
Arrivals under 15 minutes late, of 233 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
5.26%
National rate is 1.89%
Whole route
77.5%
Every carrier on EWR to MIA, 3,914 flights
These figures cover 247 flights between September 2025 and August 2026. Beyond the headline rate, 19.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Spirit against every carrier on EWR to MIA
Spirit flew 247 of the 3,914 flights on EWR to MIA, about 6% of it. Its 59.2% on time is 18 points worse than the route as a whole, which runs 77.5%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from American at 81.3% to Spirit at 59.2%.
The two carriers here are closely matched: 4 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 |
|---|---|---|---|---|---|
| American Airlines | 1,429 | 81.3% | 102 min | 3.29% | B− |
| United Airlines | 2,238 | 77.1% | 72 min | 2.50% | B |
| Spirit Airlines (this page)thin sample | 247 | 59.2% | 76 min | 5.26% | D− |
American Airlines cancels 3.3% 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.
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.
Departure window
When Spirit runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against 4 points between the best and worst carrier.
- 5am–8am23 flights—
- 8am–11am30 flights60.0%
- 11am–2pm27 flights—
- 2pm–5pm112 flights49.1%
- 5pm–8pm45 flights70.0%
- 8pm–5am10 flights—
Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 70.0% on time. The full set of windows spans 21 points.
Across the year
Spirit on EWR to MIA through the year
- Jul–Sep 202530 flights56.7%
- Oct–Dec 202589 flights65.5%
- Jan–Mar 202699 flights57.1%
- Apr–Jun 202629 flights—
Scale runs 50% to 70%. 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 59.2% on time across 247 flights.
Quarter by quarter Spirit on EWR to MIA held fairly steady: 56.7% in Jul–Sep 2025, 65.5% in Oct–Dec 2025 and 57.1% in Jan–Mar 2026. A spread of 9 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 68.6% on time and Sunday the weakest at 40.6%, a spread of 28 points.
Arrival by arrival
How late Spirit on EWR to MIA runs when it is late
The 95 late arrivals split 28 under half an hour, 22 between 30 and 60 minutes, and 45 an hour or more.
- 15+ min early50 flights21.5%
- Within 15 min88 flights37.8%
- 15–29 min late28 flights12.0%
- 30–59 min late22 flights9.4%
- 1–2 hours late25 flights10.7%
- 2+ hours late20 flights8.6%
Scale runs 0% to 100%.
Share of 233 completed flights by arrival against schedule.
13 of 81 late departures made up the time and arrived on time, 16% of them. In the other direction, 27 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 MIA.
The worst days
Worst days for Spirit on EWR to MIA
The latest arrival of the period was on 1 April 2026, 5 hours 2 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 April 2026 | 5 hours 2 minutes | Late-arriving aircraft |
| 11 February 2026 | 4 hours 28 minutes | Late-arriving aircraft |
| 29 December 2025 | 4 hours 25 minutes | Carrier |
| 29 December 2025 | 4 hours 19 minutes | Carrier |
| 2 April 2026 | 3 hours 23 minutes | Late-arriving aircraft |
Delay causes
Why Spirit 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 7,252 reported delay minutes.
- 37%National Airspace System
- 34%Late-arriving aircraft
- 30%Carrier
37% 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 2,657 minutes out of 7,252, against a national NAS share of 21%. The split is drawn from 7,252 reported delay minutes.
Cancellations run at 5.26%, 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 costs
19.3% 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 1,085 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 64.2% on time across 245 flights, 5 points above 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 5 points of difference.
One caution: this is a thin sample. 247 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 Spirit on EWR to MIA
Put together: the delay figures matter less here than the 5.26% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5pm–8pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 233 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to MIA, every carrier
- Spirit on MIA to EWR, the return leg
- American Airlines on EWR to MIA81.3%
- United Airlines on EWR to MIA77.1%
- Spirit Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- Miami International (MIA) 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.