Skip to content
WanderNerd
Check a flight

Route Reliability

Miami → Boston

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

65
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
16 min
Average arrival delay
2.5%
Cancelled
3,451
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.American Airlines72%2,234 flights
  2. 2.Delta Air Lines70%886 flights
  3. 3.JetBlue Airways68%136 flights
  4. 4.Spirit Airlines57%195 flights

What the data says

Morning flights do better here.

MIA–BOS flights departing between 6–9 AM arrived on time 90% of the time, versus 56% between 3–6 PM.

Sunday scaries are real for this one.

MIA–BOS flights arrived on time 75% of the time on Saturdays. On Sundays: 63%.

American Airlines runs this route best.

American Airlines arrived on time 72% of the time on this route; Spirit Airlines managed 57%.

Slipping a little lately.

MIA–BOS flights arrived on time 71% 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
  • Mon68%(466 flights)
  • Tue72%(473 flights)
  • Wed74%(473 flights)
  • Thu72%(494 flights)
  • Fri69%(483 flights)
  • Sat75%(482 flights)
  • Sun63%(489 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM90%(691 flights)
  • 9 AM–12 PM76%(710 flights)
  • 12–3 PM66%(497 flights)
  • 3–6 PM56%(373 flights)
  • 6–9 PM61%(738 flights)
  • 9 PM–12 AM63%(350 flights)
On-time trend by month
78%
May

Jun 71% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%297
July 202560%288
August 202571%285
September 202567%222
October 202559%248
November 202577%251
December 202575%270
January 202678%282
February 202673%290
March 202664%317
April 202672%331
May 202678%279

Same trip, other airports

Keep nerding

Based on 3,451 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.