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Flight Reliability

DL 1677 · Delta Air Lines

Boston → Austin (BOS–AUS)

43
Bring Snacks
WanderNerd Reliability Score
63%
Arrive within 15 minutes
31 min
Average arrival delay
4.1%
Cancelled
1 min early
Median arrival delay

Based on 345 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

DL 1677 departing between 3–6 PM arrived on time 82% of the time, versus 57% between 6–9 PM.

Friday is doing you no favors.

DL 1677 arrived on time 79% of the time on Saturdays and just 55% on Fridays. That gap is worth planning around.

Lagging the BOS–AUS route.

DL 1677 arrived on time 63% of the time, versus 73% across the BOS–AUS route.

Well behind the Delta Air Lines network.

DL 1677 arrived on time 63% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon57%(47 flights)
  • Tue65%(48 flights)
  • Wed66%(50 flights)
  • Thu63%(49 flights)
  • Fri55%(49 flights)
  • Sat79%(38 flights)
  • Sun59%(49 flights)
On-time by departure window
  • 12–3 PM80%(15 flights)
  • 3–6 PM82%(67 flights)
  • 6–9 PM57%(248 flights)
On-time trend by month
55%
May

Jun 63% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%27
July 202555%22
August 202555%29
September 202545%29
October 202553%30
November 202552%25
December 202561%28
January 202669%26
February 202685%26
March 202682%27
April 202683%30
May 202655%31
Departures on time
62%
Diverted
0.3%
Flights flown
330
Months covered
12

Same route, other flights

Keep nerding

Based on 345 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.