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Flight Reliability

DL 1027 · Delta Air Lines

Atlanta → Burlington (ATL–BTV)

73
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
9 min
Average arrival delay
2.2%
Cancelled
2 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 78% of the time, against 73% between 9 PM–12 AM.

Friday is doing you no favors.

DL 1027 arrived on time 84% of the time on Saturdays and just 62% on Fridays. That gap is worth planning around.

A bit behind the Delta Air Lines network.

DL 1027 arrived on time 77% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 1027 arrived on time 81% of the time over the last three months in the data, compared with 72% in the three months before that.

The breakdown

On-time by weekday
  • Mon76%(50 flights)
  • Tue79%(52 flights)
  • Wed78%(51 flights)
  • Thu77%(51 flights)
  • Fri62%(50 flights)
  • Sat84%(51 flights)
  • Sun80%(49 flights)
On-time by departure window
  • 6–9 PM78%(231 flights)
  • 9 PM–12 AM73%(123 flights)
On-time trend by month
77%
May

Jun 61% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%28
July 202579%29
August 202565%31
September 202593%30
October 202577%31
November 202583%30
December 202586%29
January 202671%28
February 202657%28
March 202677%30
April 202690%29
May 202677%31
Departures on time
80%
Diverted
0.8%
Flights flown
354
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.