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Route Reliability

Atlanta → Miami

ATL–MIA · 594 miles · Hartsfield–Jackson Atlanta International Airport to Miami International Airport

68
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
17 min
Average arrival delay
1.5%
Cancelled
6,245
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.American Airlines76%1,821 flights
  2. 2.Spirit Airlines73%287 flights
  3. 3.Delta Air Lines69%3,311 flights
  4. 4.Frontier Airlines65%826 flights

What the data says

Morning-you made the right choice.

ATL–MIA flights departing between 3–6 AM arrived on time 93% of the time, versus 58% between 3–6 PM.

Sunday scaries are real for this one.

ATL–MIA flights arrived on time 78% of the time on Wednesdays and just 63% on Sundays. That gap is worth planning around.

American Airlines runs this route best.

American Airlines arrived on time 76% of the time on this route; Frontier Airlines managed 65%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon68%(898 flights)
  • Tue78%(822 flights)
  • Wed78%(803 flights)
  • Thu74%(916 flights)
  • Fri71%(916 flights)
  • Sat66%(842 flights)
  • Sun63%(935 flights)
On-time by departure window
  • 3–6 AM93%(154 flights)
  • 6–9 AM84%(1199 flights)
  • 9 AM–12 PM79%(1365 flights)
  • 12–3 PM69%(835 flights)
  • 3–6 PM58%(929 flights)
  • 6–9 PM59%(1069 flights)
  • 9 PM–12 AM63%(581 flights)
On-time trend by month
70%
May

Jun 61% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%491
July 202559%507
August 202568%492
September 202582%418
October 202580%483
November 202574%487
December 202569%573
January 202668%527
February 202676%488
March 202667%546
April 202675%571
May 202670%549

Same trip, other airports

Keep nerding

Based on 6,245 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.