Skip to content
WanderNerd
Check a flight

Route Reliability

Raleigh–Durham → Salt Lake City

RDU–SLC · 1,824 miles · Raleigh–Durham International Airport to Salt Lake City International Airport

84
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
4 min
Average arrival delay
1.4%
Cancelled
435
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 82% of the time across 435 flights. No comparison to make.

What the data says

Morning flights do better here.

RDU–SLC flights departing between 6–9 AM arrived on time 87% of the time, versus 77% between 6–9 PM.

Sunday scaries are real for this one.

RDU–SLC flights arrived on time 87% of the time on Thursdays. On Sundays: 76%.

Trending in the right direction.

RDU–SLC flights arrived on time 92% of the time over the last three months in the data, compared with 76% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon81%(62 flights)
  • Tue86%(63 flights)
  • Wed82%(61 flights)
  • Thu87%(60 flights)
  • Fri82%(60 flights)
  • Sat83%(59 flights)
  • Sun76%(63 flights)
On-time by departure window
  • 3–6 AM—(3 flights)
  • 6–9 AM87%(215 flights)
  • 3–6 PM—(8 flights)
  • 6–9 PM77%(202 flights)
On-time trend by month
87%
May

Jun 77% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%52
July 202577%60
August 202588%40
September 202583%30
October 202590%29
November 202580%30
December 202563%38
January 202687%31
February 202678%27
March 202697%30
April 202693%30
May 202687%31

Keep nerding

Based on 435 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.