Skip to content
WanderNerd
Check a flight

Route Reliability

Portland → Atlanta

PWM–ATL · 1,027 miles · Portland International Jetport to Hartsfield–Jackson Atlanta International Airport

81
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
9 min
Average arrival delay
1.1%
Cancelled
641
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 78% of the time across 641 flights. No comparison to make.

What the data says

Morning flights do better here.

PWM–ATL flights departing between 3–6 AM arrived on time 89% of the time, versus 53% between 6–9 PM.

Mondays have been rough.

PWM–ATL flights arrived on time 90% of the time on Fridays and just 70% on Mondays. That gap is worth planning around.

Ticking up lately.

PWM–ATL flights arrived on time 86% of the time over the last three months in the data, compared with 80% 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
  • Mon70%(89 flights)
  • Tue77%(88 flights)
  • Wed81%(90 flights)
  • Thu83%(90 flights)
  • Fri90%(87 flights)
  • Sat74%(95 flights)
  • Sun74%(93 flights)
On-time by departure window
  • 3–6 AM89%(143 flights)
  • 6–9 AM87%(216 flights)
  • 12–3 PM70%(208 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM53%(61 flights)
On-time trend by month
77%
May

Jun 61% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%80
July 202563%90
August 202582%74
September 202590%61
October 202592%61
November 202579%58
December 202566%32
January 202683%30
February 202693%27
March 202684%31
April 202697%32
May 202677%56

Keep nerding

Based on 641 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.