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Route · ATL → EYW · 2020–2025 BTS data

Atlanta to Key West

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ATL to EYW (Atlanta to Key West) ranks #1272 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.9%
On-time
+4.9 pts
vs US avg
81 min
Delay when late
9,312
Flights
#1272 of 4927
Corpus placement

Cancelled

1.4%

Best Month

Sep 2025 95%

Worst Month

Jul 2025 67%

Distance

646 mi

Carriers

5

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 121 36 1 0 DL
Nov 2025 119 26 3 3 DL
Oct 2025 123 14 0 0 DL
Sep 2025 120 6 0 1 DL
Aug 2025 124 24 0 1 DL
Jul 2025 123 40 0 0 DL
Jun 2025 120 33 1 0 DL
May 2025 125 25 0 0 DL
Apr 2025 119 25 0 0 DL
Mar 2025 124 35 2 3 DL
Feb 2025 112 25 0 1 DL
Jan 2025 119 26 4 0 DL
Dec 2024 132 25 1 7 9E,DL
Nov 2024 119 12 0 0 DL
Oct 2024 124 12 3 0 DL
Sep 2024 120 14 6 0 DL
Aug 2024 124 8 8 0 DL
Jul 2024 124 35 9 0 DL
Jun 2024 120 20 0 1 DL
May 2024 124 23 0 1 9E,DL
Apr 2024 121 21 0 1 9E,DL
Mar 2024 127 25 2 0 9E,DL
Feb 2024 118 19 0 1 9E,DL
Jan 2024 127 37 0 2 9E,DL

ATL–EYW seasonal on-time pattern

Best: November (89.6%) · weakest: July (77.4%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 82.2%

Strongest calendar month

November

89.6% on-time · ~120 flights/mo

Busiest calendar month

March

~153 flights/mo avg

Weakest calendar month

July

77.4% on-time · ~131 flights/mo

Cancellation Rate

1.4%

40 of 2,929 flights

Diversion Rate

0.8%

22 of 2,929 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

ATL - Atlanta

Full on-time, delay-cause, and seasonal performance for Atlanta, GA.

ATL on-time profile

EYW - Key West

Full on-time, delay-cause, and seasonal performance for Key West, FL.

EYW on-time profile

Compare the two airports

See ATL and EYW side by side on delays, cancellations, and reliability.

Compare ATL vs EYW

Origin-hub reliability standing

Mid-pack among ATL departures

From ATL, this corridor sits with 75 other 75–85% on-time routes out of 144 tracked departures, not the hub's reliability leaders (67 at ≥85%) and not the softest ( 2 below 75%). Destination: Key West · fleet on-time rank #1600 of 4927.

What the Data Says About ATL to EYW

Bureau of Transportation Statistics records show Atlanta to Key West (ATL to EYW) running a 83.9% on-time rate over 9,312 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 81.2 minutes. The 646-mile corridor is served by 5 carriers, and over the last 24 months 1.4% of 2,929 flights were cancelled, 0.8% diverted.

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 95% on-time, while Jul 2025 came in at just 67% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, ATL–EYW peaks in November at 89.6% on-time while March carries the heaviest traffic (~153 flights per month) ; the softest month is July at 77.4%, a 12.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ATL to EYW rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ATL to EYW ranks #1272 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from ATL to EYW? ▼
Flights from Atlanta to Key West have a 83.9% on-time rate based on 9,312 flights. The average delay is 81.2 minutes. The best recent month was Sep 2025 with 95% on-time.
What is the cancellation rate for ATL to EYW? ▼
Over the last 24 months, 1.4% of flights on this route were cancelled (40 of 2,929 flights) and 0.8% were diverted.
How far is the flight from ATL to EYW? ▼
The flight distance from Atlanta (ATL) to Key West (EYW) is approximately 646 miles. This route is served by 5 carriers.
When is the best time to fly from ATL to EYW? ▼
The best recent month for on-time performance was Sep 2025 (95% on-time). The worst was Jul 2025 (67% on-time). Consider booking during months with historically better performance.

Airports on this route

ATL Airport

Atlanta
EYW Airport

Key West
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using ATL–EYW data

ATL–EYW runs 4.9 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare ATL and EYW airport profiles: delay causes and top routes differ even on the same corridor. ATL airport
  • If your dates flex, November (89.6% on-time) beats July (77.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.9% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.