SFB to GRR flight delays
Sanford, FL (SFB) Grand Rapids, MI (GRR) · 1,001 miles
406 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
70.05%
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
25 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In May it ran 44.3 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 13.6 points more punctual than the earlier ones, which usually means a schedule that was too tight has been given more room.
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.
Flights from Sanford to Grand Rapids run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Allegiant Air arrived on time most often on SFB to GRR. Flights ran closest to schedule in May and worst in July.
Every airline on SFB to GRR
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 | 70.05% | 0.49% | 80 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
GRR to SFB Grand Rapids back to Sanford 68.98% on time DOther routes from Sanford
- SFB → ABE · Allentown/Bethlehem/Easton C
- SFB → TYS · Knoxville F
- SFB → AVL · Asheville D
- SFB → CVG · Cincinnati D
- SFB → FNT · Flint C
- SFB → BGR · Bangor C
- SFB → MDT · Harrisburg C
- SFB → ATW · Appleton C
- SFB → SBN · South Bend D
- SFB → IND · Indianapolis F
- SFB → LEX · Lexington F
- SFB → DSM · Des Moines C
Common questions
Are flights from Sanford to Grand Rapids usually delayed?
70.05% of flights on the SFB to GRR 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 Sanford to Grand Rapids?
Only Allegiant Air appears in the published record on this route, with 406 flights and 70.05% arriving on time.
How often are SFB to GRR 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 Sanford to Grand Rapids?
May, when 92.9% of flights arrived on time. The worst was July at 48.6%.
When SFB to GRR 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 SFB to GRR 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 →