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Flight Reliability

F9 3511 · Frontier Airlines

Boston → Atlanta (BOS–ATL)

70
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
13 min
Average arrival delay
1.5%
Cancelled
3 min
Median arrival delay

Based on 198 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 3511 departing between 12–3 PM arrived on time 75% of the time, versus 64% between 9 AM–12 PM.

Tuesdays have been rough.

F9 3511 arrived on time 81% of the time on Fridays and just 50% on Tuesdays. That gap is worth planning around.

Lagging the BOS–ATL route.

F9 3511 arrived on time 69% of the time, versus 79% across the BOS–ATL route.

A bit behind the Frontier Airlines network.

F9 3511 arrived on time 69% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon62%(42 flights)
  • Tue50%(14 flights)
  • Wed80%(15 flights)
  • Thu80%(30 flights)
  • Fri81%(41 flights)
  • Sat74%(23 flights)
  • Sun53%(30 flights)
On-time by departure window
  • 6–9 AM—(5 flights)
  • 9 AM–12 PM64%(118 flights)
  • 12–3 PM75%(72 flights)
On-time trend by month
84%
May

Jun 60% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%10
August 202592%12
September 202576%21
October 202574%19
November 202562%13
December 202543%21
March 202669%26
April 202673%30
May 202684%31
Departures on time
67%
Diverted
0%
Flights flown
195
Months covered
11

Same route, other flights

Keep nerding

Based on 198 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.