Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 5217 · Delta Air Lines

Burlington → New York (BTV–LGA)

80
Pretty Reliable
WanderNerd Reliability Score
89%
Arrive within 15 minutes
2 min
Average arrival delay
4.2%
Cancelled
12 min early
Median arrival delay

Based on 360 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

DL 5217 departing between 3–6 AM arrived on time 91% of the time, versus 73% between 3–6 PM.

Wednesday is the weak spot.

DL 5217 arrived on time 96% of the time on Fridays. On Wednesdays: 85%.

Better than the BTV–LGA route average.

DL 5217 arrived on time 89% of the time, versus 80% across the BTV–LGA route.

Better than the Delta Air Lines network average.

DL 5217 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon85%(48 flights)
  • Tue88%(49 flights)
  • Wed85%(48 flights)
  • Thu92%(49 flights)
  • Fri96%(48 flights)
  • Sat87%(52 flights)
  • Sun88%(51 flights)
On-time by departure window
  • 3–6 AM91%(34 flights)
  • 6–9 AM89%(293 flights)
  • 9 AM–12 PM—(7 flights)
  • 3–6 PM73%(11 flights)
On-time trend by month
97%
May

Jun 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 202597%30
August 202594%31
September 202593%30
October 202584%31
November 202589%28
December 202585%26
January 202685%27
February 202685%26
March 202686%28
April 202677%30
May 202697%29
Departures on time
92%
Diverted
0%
Flights flown
345
Months covered
12

Same route, other flights

Keep nerding

Based on 360 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.