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Flight Reliability

DL 662 · Delta Air Lines

Portland → Atlanta (PDX–ATL)

97
Nerd Approved
WanderNerd Reliability Score
97%
Arrive within 15 minutes
8 min early
Average arrival delay
1.1%
Cancelled
12 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Better than the PDX–ATL route average.

DL 662 arrived on time 97% of the time, versus 88% across the PDX–ATL route.

Well ahead of the Delta Air Lines network.

DL 662 arrived on time 97% of the time, versus 81% across the Delta Air Lines network.

Slipping a little lately.

DL 662 arrived on time 92% of the time over the last three months in the data, compared with 99% in the three months before that.

The breakdown

On-time by weekday
  • Mon96%(51 flights)
  • Tue98%(51 flights)
  • Wed96%(52 flights)
  • Thu96%(51 flights)
  • Fri96%(50 flights)
  • Sat96%(51 flights)
  • Sun98%(52 flights)
On-time trend by month
84%
May

Jun 90% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 2025100%30
August 2025100%30
September 2025100%30
October 2025100%31
November 202597%30
December 2025100%31
January 202697%30
February 2026100%27
March 2026100%29
April 202693%29
May 202684%31
Departures on time
97%
Diverted
0.8%
Flights flown
358
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.