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Route Reliability

Boston → Miami

BOS–MIA · 1,258 miles · Boston Logan International Airport to Miami International Airport

75
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
6 min
Average arrival delay
2.3%
Cancelled
3,454
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.American Airlines81%2,234 flights
  2. 2.Delta Air Lines72%888 flights
  3. 3.JetBlue Airways71%136 flights
  4. 4.Spirit Airlines58%196 flights

What the data says

Morning flights do better here.

BOS–MIA flights departing between 3–6 AM arrived on time 96% of the time, versus 61% between 3–6 PM.

Sunday scaries are real for this one.

BOS–MIA flights arrived on time 83% of the time on Wednesdays. On Sundays: 69%.

American Airlines has a clear lead on this route.

American Airlines arrived on time 81% of the time on this route; Spirit Airlines managed 58%.

Ticking up lately.

BOS–MIA flights arrived on time 79% of the time over the last three months in the data, compared with 75% in the three months before that.

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
  • Mon77%(470 flights)
  • Tue80%(465 flights)
  • Wed83%(473 flights)
  • Thu80%(490 flights)
  • Fri78%(486 flights)
  • Sat76%(483 flights)
  • Sun69%(498 flights)
On-time by departure window
  • 3–6 AM96%(355 flights)
  • 6–9 AM89%(1058 flights)
  • 9 AM–12 PM79%(307 flights)
  • 12–3 PM73%(445 flights)
  • 3–6 PM61%(671 flights)
  • 6–9 PM66%(528 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
81%
May

Jun 74% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%296
July 202574%285
August 202584%287
September 202580%223
October 202576%249
November 202580%253
December 202571%272
January 202677%282
February 202676%290
March 202679%317
April 202676%333
May 202681%278

Same trip, other airports

Keep nerding

Based on 3,454 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.