Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 1270 · Delta Air Lines

Portland → Salt Lake City (PDX–SLC)

100
Nerd Approved
WanderNerd Reliability Score
98%
Arrive within 15 minutes
10 min early
Average arrival delay
0%
Cancelled
11 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Tuesday has been the better bet.

A small edge: 100% on time on Tuesdays against 94% on Mondays.

Better than the PDX–SLC route average.

DL 1270 arrived on time 98% of the time, versus 89% across the PDX–SLC route.

Well ahead of the Delta Air Lines network.

DL 1270 arrived on time 98% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.0% were cancelled.

The breakdown

On-time by weekday
  • Mon94%(52 flights)
  • Tue100%(52 flights)
  • Wed98%(52 flights)
  • Thu96%(52 flights)
  • Fri100%(52 flights)
  • Sat98%(52 flights)
  • Sun100%(52 flights)
On-time trend by month
100%
May

Jun 100% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%30
July 202594%31
August 2025100%30
September 2025100%30
October 202597%31
November 2025100%30
December 202594%31
January 202697%31
February 202696%28
March 2026100%31
April 2026100%30
May 2026100%31
Departures on time
97%
Diverted
0.3%
Flights flown
364
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.