ATL to EYW flight delays
Atlanta, GA (ATL) Key West, FL (EYW) · 646 miles
1,457 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
82.46%
Arrived on time
Within 15 minutes of schedule
1.3%
Cancelled
Share of scheduled flights
70 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 27.5 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 shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 70 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.
Only Delta Air Lines 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 Atlanta to Key West keep to schedule more reliably than most. On a route this punctual the day you fly matters more than the airline you pick.
Which airline should you fly on this route?
Over January 2025 – August 2026, Delta Air Lines arrived on time most often on ATL to EYW. Flights ran closest to schedule in September and worst in July.
Every airline on ATL to EYW
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 1,457 | 82.46% | 1.3% | 70 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
EYW to ATL Key West back to Atlanta 85.65% on time BOther routes from Atlanta
Common questions
Are flights from Atlanta to Key West usually delayed?
82.46% of flights on the ATL to EYW route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Atlanta to Key West?
Only Delta Air Lines appears in the published record on this route, with 1,457 flights and 82.46% arriving on time.
How often are ATL to EYW flights cancelled?
1.3% of scheduled flights did not operate — about 13 in every thousand. That is in the normal range.
What is the best month to fly Atlanta to Key West?
September, when 95% of flights arrived on time. The worst was July at 67.5%.
When ATL to EYW flights are late, how late are they?
About 70 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 ATL to EYW 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 →