Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 451 · Delta Air Lines

Portland → New York (PDX–JFK)

83
Pretty Reliable
WanderNerd Reliability Score
91%
Arrive within 15 minutes
9 min early
Average arrival delay
2.5%
Cancelled
15 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

DL 451 arrived on time 98% of the time on Fridays and just 82% on Mondays. That gap is worth planning around.

A bit ahead of the PDX–JFK route.

DL 451 arrived on time 91% of the time, versus 85% across the PDX–JFK route.

Better than the Delta Air Lines network average.

DL 451 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon82%(51 flights)
  • Tue88%(50 flights)
  • Wed90%(51 flights)
  • Thu90%(49 flights)
  • Fri98%(49 flights)
  • Sat94%(51 flights)
  • Sun94%(49 flights)
On-time trend by month
87%
May

Jun 79% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202586%28
August 202597%31
September 202586%29
October 202583%29
November 202590%29
December 202597%29
January 202690%30
February 2026100%25
March 202697%31
April 2026100%29
May 202687%31
Departures on time
95%
Diverted
1.4%
Flights flown
350
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.