Route profile
ATL→FLL
Flight reliability, delays and best times to fly from Atlanta to Fort Lauderdale, 581 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 17% of comparable major US routes (4,598 compared)
Calculated from 22,817 flights. How this is calculated
ATL → FLL arrives on time 72.0% of the time; the return trip, FLL → ATL, arrives on time 71.4% of the time.
ATL → FLL spends 24.2 minutes on the ground on a 581-mile trip: 16.6 minutes from pushback to wheels-up at ATL and 7.6 minutes from touchdown to gate at FLL.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
Which day you fly matters unusually much here, a wider weekday spread than 95% of 4,467 comparable routes.
78.8% on time on a typical Wednesday, against 63.6% on a Sunday.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,467 in the comparison.
Why ATL → FLL flights are cancelled
July 2023 – July 2026
ATL → FLL cancelled 347 of 22,817 scheduled flights — about 1 in every 66. The reason filed most often was the airline, 47.0% of the cancellations coded on this route — about 1 in every 140 scheduled flights.
Share of cancellations
Of 347 cancelled departures carrying a reason code.
What each reason means
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
163 cancellations, 47.0% of the total.
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
161 cancellations, 46.4% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
23 cancellations, 6.6% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
347 coded cancellations were recorded on ATL → FLL; the section appears from 50.
When it goes wrong
July 2023 – July 2026
60 min late
against a median of 1 min early
ATL → FLL has an average that understates its risk: a typical arrival is 1 min early, but the worst tenth are 61 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 22,817 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at FLL after arriving from ATL.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 46% | Likely to miss |
| 45 min | 27% | High risk |
| 60 min | 18% | High risk |
| 90 min | 10.0% | Some risk |
| 120 min | 6.0% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.52% of the time and diverts 0.23% of the time, which a late arrival never shows up in.
Chance of missing is the share of 22,418 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 60 minutes late (90th-percentile gate arrival delay), over 22,817 operations.
Any other layover length: connection checker.
Best time to fly
ATL → FLL flights departing 5–9 AM arrived on time 85.1% of the time, against 62.6% for 6–9 PM departures, a gap of 22.5 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (ATL).
Hour of departure matters more than day of the week: hourly averages sit a typical 8.6 points from the route-wide rate, weekday averages 4.8 points.
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On-time rate, % · stronger color, fewer on time
- 40–49
- 50–59
- 60–69
- 70–79
- 80–89
- 90–99
- Fewer than 120 flights, not scored
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.
No slot is named best or worst: too few reach 500 flights. Departures after 11 PM (123 flights) are not drawn: no slot in those hours has enough flights to score.
View as tableHide table
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| 5 AM–6 AM | 86.5% on time148 flights | 90.8% on time145 flights | 86.7% on time145 flights | 85.1% on time148 flights | 78.3% on time149 flights | 82.8% on time152 flights | 79.6% on time153 flights |
| 6 AM–7 AM | 70 flights, too few to score | 64 flights, too few to score | 53 flights, too few to score | 64 flights, too few to score | 65 flights, too few to score | 77 flights, too few to score | 76 flights, too few to score |
| 7 AM–8 AM | 82.4% on time228 flights | 87.7% on time247 flights | 86.7% on time243 flights | 87.0% on time232 flights | 87.5% on time229 flights | 89.0% on time253 flights | 83.3% on time241 flights |
| 8 AM–9 AM | 84.8% on time245 flights | 85.8% on time240 flights | 87.2% on time235 flights | 82.7% on time249 flights | 84.9% on time240 flights | 85.1% on time229 flights | 83.3% on time218 flights |
| 9 AM–10 AM | 64.8% on time251 flights | 76.9% on time233 flights | 78.4% on time229 flights | 76.3% on time243 flights | 74.6% on time252 flights | 72.2% on time245 flights | 68.1% on time239 flights |
| 10 AM–11 AM | 78.6% on time219 flights | 83.8% on time223 flights | 84.7% on time219 flights | 80.1% on time219 flights | 75.0% on time225 flights | 71.8% on time251 flights | 76.3% on time250 flights |
| 11 AM–12 PM | 69.2% on time133 flights | 82.3% on time147 flights | 87.2% on time149 flights | 113 flights, too few to score | 74.2% on time123 flights | 64.3% on time145 flights | 110 flights, too few to score |
| 12 PM–1 PM | 76.9% on time232 flights | 79.9% on time172 flights | 83.4% on time176 flights | 78.4% on time185 flights | 72.4% on time232 flights | 74.0% on time235 flights | 69.4% on time188 flights |
| 1 PM–2 PM | 106 flights, too few to score | 112 flights, too few to score | 85.6% on time120 flights | 114 flights, too few to score | 108 flights, too few to score | 71.7% on time123 flights | 109 flights, too few to score |
| 2 PM–3 PM | 72.5% on time164 flights | 76.8% on time153 flights | 76.9% on time169 flights | 69.0% on time174 flights | 73.3% on time165 flights | 66.1% on time167 flights | 59.6% on time181 flights |
| 3 PM–4 PM | 65.7% on time207 flights | 70.6% on time222 flights | 74.4% on time209 flights | 64.2% on time222 flights | 64.3% on time200 flights | 65.2% on time208 flights | 58.1% on time232 flights |
| 4 PM–5 PM | 61.2% on time256 flights | 70.5% on time212 flights | 71.6% on time197 flights | 66.8% on time227 flights | 62.7% on time264 flights | 65.2% on time158 flights | 54.0% on time238 flights |
| 5 PM–6 PM | 65.9% on time221 flights | 74.5% on time194 flights | 71.4% on time192 flights | 66.2% on time237 flights | 66.5% on time216 flights | 67.9% on time250 flights | 45.4% on time246 flights |
| 6 PM–7 PM | 99 flights, too few to score | 74 flights, too few to score | 80 flights, too few to score | 59.6% on time139 flights | 98 flights, too few to score | 92 flights, too few to score | 60.3% on time129 flights |
| 7 PM–8 PM | 66.0% on time203 flights | 68.9% on time228 flights | 73.0% on time227 flights | 55.8% on time201 flights | 61.3% on time202 flights | 61.4% on time172 flights | 45.2% on time193 flights |
| 8 PM–9 PM | 103 flights, too few to score | 85 flights, too few to score | 67 flights, too few to score | 94 flights, too few to score | 113 flights, too few to score | 64.8% on time135 flights | 89 flights, too few to score |
| 9 PM–10 PM | 64.7% on time193 flights | 107 flights, too few to score | 114 flights, too few to score | 61.5% on time194 flights | 59.4% on time188 flights | 74 flights, too few to score | 46.0% on time200 flights |
| 10 PM–11 PM | 61.1% on time255 flights | 74.9% on time223 flights | 71.6% on time228 flights | 60.8% on time263 flights | 61.5% on time264 flights | 66.2% on time233 flights | 56.4% on time286 flights |
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 84.2% on time from 1,040 flights
- 6 AM: 84.3% on time from 469 flights
- 7 AM: 86.3% on time from 1,673 flights
- 8 AM: 84.8% on time from 1,656 flights
- 9 AM: 73.0% on time from 1,692 flights
- 10 AM: 78.4% on time from 1,606 flights
- 11 AM: 74.3% on time from 920 flights
- 12 PM: 76.1% on time from 1,420 flights
- 1 PM: 75.6% on time from 792 flights
- 2 PM: 70.5% on time from 1,173 flights
- 3 PM: 66.0% on time from 1,500 flights
- 4 PM: 64.2% on time from 1,552 flights
- 5 PM: 64.9% on time from 1,556 flights
- 6 PM: 62.6% on time from 711 flights
- 7 PM: 62.2% on time from 1,426 flights
- 8 PM: 63.4% on time from 686 flights
- 9 PM: 62.2% on time from 1,070 flights
- 10 PM: 64.2% on time from 1,752 flights
- 11 PM: 51.3% on time from 123 flights
Why ATL → FLL runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for ATL → FLL. Only delays of 15 minutes or more are attributed.
How this route holds up in bad weather
July 2023 – July 2026
The harder-hit end is the one the flight leaves from, where a cancellation keeps it from departing at all. Bad weather cancels 3.3 times the normal rate at ATL against 2.1 times at FLL. Cancelled in bad weather against normal hours: ATL 3.4% against 1.0%, FLL 3.3% against 1.6%. Flights that did leave FLL in bad weather arrived on time 54.6% of the time, against 73.3% in normal hours.
Bad weather and normal hours at the airports
Scheduled departures, July 2023 – July 2026| Departures from | ATL | FLL |
|---|---|---|
| Cancelled in bad weather | 3.4% | 3.3% |
| Cancelled in normal hours | 1.0% | 1.6% |
| Arrived on time, bad weather | 66.5% | 54.6% |
| Arrived on time, normal hours | 80.2% | 73.3% |
| Departures in bad weather | 105,854 | 13,418 |
Of the carriers on this route, Southwest Airlines (2.1% cancelled against 3.1% for the other carriers at ATL) cancelled the fewest departures from ATL in bad weather and Frontier Airlines (5.0% cancelled against 3.8% for the other carriers at ATL) the most.
This route’s airlines in bad weather at ATL
All departures from ATL| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| Southwest Airlines | 8,953 | 2.1%below the others | 3.1% |
| Delta Air Lines | 73,919 | 3.5%about level | 3.6% |
| Spirit Airlines | 2,965 | 3.9%above the others | 3.2% |
| JetBlue | 977 | 4.0%about level | 3.3% |
| Frontier Airlines | 4,928 | 5.0%above the others | 3.8% |
These are airport figures, not route figures: every scheduled departure from ATL and FLL, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from ATL on every route.
Weather source and limits. In full: ATL (airlines), FLL, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Delta Air Lines | 13,009 | 74.3% | 1.16% | -2 min | 8.6% |
| Spirit Airlines | 4,748 | 68.4% | 2.04% | -1 min | 12.3% |
| Frontier Airlines | 1,954 | 62.3% | 3.02% | 3 min | 18.0% |
| Southwest Airlines | 1,894 | 74.6% | 0.58% | -1 min | 7.1% |
| JetBlue | 1,212 | 71.4% | 2.39% | -2 min | 11.3% |
Delta Air Lines flew 57.0% of the 22,817 flights listed. Frontier Airlines cancelled 3.02% of its flights here against 0.58% for Southwest Airlines.
Southwest Airlines arrived on time 12.3 percentage points more often than Frontier Airlines on this route.
Other ways to fly Atlanta to Miami
Airport pairs in the same two city markets, as the DOT defines them.
| Route | Flights | On time | Cancelled | Median delay | Score |
|---|---|---|---|---|---|
| ATL→FLL this route Atlanta to Fort Lauderdale | 22,817 | 72.0% | 1.52% | -1 min | 52 |
| ATL→MIA Atlanta to Miami | 20,130 | 71.5% | 1.29% | -1 min | 50 |
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| DL1413 Delta Air Lines | 1:40 PM | 1,076 | 75.0% |
| DL1512 Delta Air Lines | 10:40 AM | 1,070 | 81.3% |
| DL1489 Delta Air Lines | 7:59 PM | 1,048 | 67.6% |
| DL1295 Delta Air Lines | 4:45 PM | 982 | 67.5% |
| DL1670 Delta Air Lines | 5:45 PM | 921 | 66.7% |
| DL1229 Delta Air Lines | 10:35 PM | 896 | 69.8% |
| DL2345 Delta Air Lines | 3:45 PM | 882 | 66.5% |
| F92174 Frontier Airlines | 10:44 PM | 732 | 59.7% |
| DL1334 Delta Air Lines | 7:00 AM | 724 | 87.2% |
DL1334 (7:00 AM) arrived on time 87.2% of the time, 27.5 points more often than F92174 (10:44 PM) at 59.7%.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 15.2 percentage points.
By month
- Jan: 71.4%
- Feb: 74.6%
- Mar: 63.7%
- Apr: 75.0%
- May: 71.3%
- Jun: 68.9%
- Jul: 61.7%
- Aug: 69.4%
- Sep: 81.1%
- Oct: 82.1%
- Nov: 80.2%
- Dec: 69.5%
July is historically the weakest month and October the strongest, a spread of 20.4 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 61.7% from 682 flights
- August 2023: 66.8% from 655 flights
- September 2023: 79.2% from 631 flights
- October 2023: 83.0% from 664 flights
- November 2023: 81.2% from 666 flights
- December 2023: 72.9% from 731 flights
- January 2024: 75.7% from 732 flights
- February 2024: 80.5% from 679 flights
- March 2024: 68.1% from 733 flights
- April 2024: 78.8% from 707 flights
- May 2024: 70.0% from 703 flights
- June 2024: 72.7% from 632 flights
- July 2024: 61.4% from 636 flights
- August 2024: 70.4% from 587 flights
- September 2024: 80.1% from 539 flights
- October 2024: 83.6% from 571 flights
- November 2024: 82.8% from 576 flights
- December 2024: 70.5% from 607 flights
- January 2025: 71.2% from 580 flights
- February 2025: 74.0% from 528 flights
- March 2025: 67.1% from 599 flights
- April 2025: 71.1% from 532 flights
- May 2025: 69.8% from 531 flights
- June 2025: 54.4% from 525 flights
- July 2025: 60.6% from 526 flights
- August 2025: 71.5% from 495 flights
- September 2025: 84.9% from 453 flights
- October 2025: 79.0% from 487 flights
- November 2025: 76.4% from 608 flights
- December 2025: 65.0% from 687 flights
- January 2026: 66.9% from 676 flights
- February 2026: 68.7% from 660 flights
- March 2026: 56.6% from 781 flights
- April 2026: 74.1% from 713 flights
- May 2026: 74.3% from 563 flights
- June 2026: 78.5% from 540 flights
- July 2026: 62.9% from 602 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 70.6% against 71.4% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 22,817 ATL → FLL flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed