SFB to SDF flight delays
Sanford, FL (SFB) Louisville, KY (SDF) · 698 miles
132 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
56.92%
Arrived on time
Within 15 minutes of schedule
1.52%
Cancelled
Share of scheduled flights
91 min
When late, late by
Average across delayed arrivals
41 min
Delay per flight
Averaged over every flight flown
What the record says about this route
This is a late route. Flights from Sanford to Louisville miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
This route does worse than its own airport. SFB as a whole runs 15.2 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 SFB to SDF. Flights ran closest to schedule in September and worst in February.
Every airline on SFB to SDF
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 | 132 | 56.92% | 1.52% | 91 min | F |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SDF to SFB Louisville back to Sanford 53.08% on time FOther routes from Sanford
- SFB → ABE · Allentown/Bethlehem/Easton C
- SFB → TYS · Knoxville F
- SFB → AVL · Asheville D
- SFB → GRR · Grand Rapids 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
Common questions
Are flights from Sanford to Louisville usually delayed?
56.92% of flights on the SFB to SDF route arrived within 15 minutes of schedule, so roughly 4 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Sanford to Louisville?
Only Allegiant Air appears in the published record on this route, with 132 flights and 56.92% arriving on time.
How often are SFB to SDF flights cancelled?
1.52% of scheduled flights did not operate — about 15 in every thousand. That is in the normal range.
When SFB to SDF flights are late, how late are they?
About 91 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 SDF 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 →