GRR to SFB flight delays
Grand Rapids, MI (GRR) Sanford, FL (SFB) · 1,001 miles
406 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
68.98%
Arrived on time
Within 15 minutes of schedule
0.49%
Cancelled
Share of scheduled flights
80 min
When late, late by
Average across delayed arrivals
26 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In February it ran 54.6 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The route has been getting better. The later months in the record run 20.6 points more punctual than the earlier ones, which usually means a schedule that was too tight has been given more room.
This route does worse than its own airport. GRR as a whole runs 10.7 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
Only Allegiant Air 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, Allegiant Air arrived on time most often on GRR to SFB. Flights ran closest to schedule in February and worst in July.
Every airline on GRR to SFB
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 |
|---|---|---|---|---|---|
| Allegiant Air | 406 | 68.98% | 0.49% | 80 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SFB to GRR Sanford back to Grand Rapids 70.05% on time DOther routes from Grand Rapids
Common questions
Are flights from Grand Rapids to Sanford usually delayed?
68.98% of flights on the GRR to SFB route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Grand Rapids to Sanford?
Only Allegiant Air appears in the published record on this route, with 406 flights and 68.98% arriving on time.
How often are GRR to SFB flights cancelled?
0.49% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
What is the best month to fly Grand Rapids to Sanford?
February, when 91.7% of flights arrived on time. The worst was July at 37.1%.
When GRR to SFB flights are late, how late are they?
About 80 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 GRR to SFB 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 →