ISP to MYR flight delays
Islip, NY (ISP) Myrtle Beach, SC (MYR) · 586 miles
121 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
86.55%
Arrived on time
Within 15 minutes of schedule
0.83%
Cancelled
Share of scheduled flights
73 min
When late, late by
Average across delayed arrivals
10 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 73 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. MYR to ISP arrives on time 12.2 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This route does better than its own airport. Departures from ISP overall run 11.3 points less punctual than this particular one — so whatever congestion ISP has, this route is largely escaping it.
Only Frontier Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, Frontier Airlines arrived on time most often on ISP to MYR. Flights ran closest to schedule in May and worst in November.
Every airline on ISP to MYR
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Frontier Airlines | 121 | 86.55% | 0.83% | 73 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MYR to ISP Myrtle Beach back to Islip 74.36% on time DCommon questions
Are flights from Islip to Myrtle Beach usually delayed?
86.55% of flights on the ISP to MYR route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Islip to Myrtle Beach?
Only Frontier Airlines appears in the published record on this route, with 121 flights and 86.55% arriving on time.
How often are ISP to MYR flights cancelled?
0.83% of scheduled flights did not operate — about 8 in every thousand. That is in the normal range.
When ISP to MYR flights are late, how late are they?
About 73 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ISP to MYR during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →