Route on-time record
PDX to SLC: most on-time flights and the best time to fly
Portland (Portland International Airport) to Salt Lake City (Salt Lake City International Airport). 2,398 nonstop flights in Jun 2025 to May 2026, 88% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Delta 1270 at 5:45 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PDX → SLC
Portland to Salt Lake City: 2,398 nonstop flights a year
On time (12 months)
88%
Cancelled
0.8%
avg delay 8 min
Best time to leave
Before 9 AM
92% on time vs 84% 6 to 9 PM
Most reliable airline
Alaska
90% chance on time
Lowest nonstop fare seen in the next two months: $177 (Alaska 2497 on 2026-11-14). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 1270
5:45 AM → 8:40 AM1h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
97%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 98% of the time (364 flights, Jun 2025 to May 2026).
- Never cancelled in 365 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 84%).
Strong track record · 364 flights
Find Delta 1270 fares Opens this date on Aviasales#2 · SkyWest 3377 · sold as United Express, Delta Connection, American Eagle or Alaska
2:30 PM → 5:31 PM2h 01m nonstop
Local times, typical schedule. Last flown 2026-05-12.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (21 flights, Jun 2025 to May 2026).
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find 2:30 PM flight fares Opens this date on Aviasales#3 · Delta 1203
9:55 AM → 12:50 PM1h 54m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 2.4%
- Avg arrival delay
- 6 min
- Arrived on time 91% of the time (160 flights, Jun 2025 to May 2026).
Moderate track record · 160 flights
Find Delta 1203 fares Opens this date on Aviasales#4 · Alaska 156
7:15 AM → 10:20 AM2h 05m nonstop
Local times, typical schedule. Last flown 2026-03-16.
88%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 92% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 84%).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Alaska 156 fares Opens this date on Aviasales#5 · Delta 1238
7:05 PM → 9:56 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 93%
- Cancelled
- 5.6%
- Avg arrival delay
- 13 min
- Arrived on time 93% of the time (85 flights, Jun 2025 to May 2026).
- Cancelled 5.6% of the time (5 of 90).
- Leaves in this route's least on-time window (6 to 9 PM: 84% on time; Before 9 AM: 92%).
Moderate track record · 85 flights
Find Delta 1238 fares Opens this date on Aviasales#6 · Delta 1209
1:45 PM → 4:37 PM1h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.1%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (359 flights, Jun 2025 to May 2026).
Strong track record · 359 flights
Find Delta 1209 fares Opens this date on Aviasales#7 · Delta 1244
5:05 PM → 7:54 PM1h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.6%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (158 flights, Jun 2025 to May 2026).
Moderate track record · 158 flights
Find Delta 1244 fares Opens this date on Aviasales#8 · SkyWest 3355 · sold as United Express, Delta Connection, American Eagle or Alaska
7:05 AM → 10:05 AM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-12.
84%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 84% of the time (258 flights, Jun 2025 to May 2026).
- Never cancelled in 258 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 84%).
Strong track record · 258 flights
Find 7:05 AM flight fares Opens this date on Aviasales#9 · SkyWest 3291 · sold as United Express, Delta Connection, American Eagle or Alaska
5:40 PM → 8:44 PM2h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.5%
- Avg arrival delay
- 14 min
- Arrived on time 78% of the time (201 flights, Jun 2025 to May 2026).
Strong track record · 201 flights
Find 5:40 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Alaska Airlines90%
47 flights · 94% on time as flown · 0.6% cancel
- Delta Air Lines89%
1,698 flights · 90% on time as flown · 1.0% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)85%
601 flights · 85% on time as flown · 0.3% cancel
- Frontier Airlines74%
52 flights · 56% on time as flown · 0.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
608 flights · avg delay 4 min
- 9 AM to noon90%
489 flights · avg delay 7 min
- Noon to 3 PM88%
448 flights · avg delay 8 min
- 3 to 6 PM84%
537 flights · avg delay 9 min
- 6 to 9 PM84%
316 flights · avg delay 13 min
Best day: Tuesday (92%). Worst: Sunday (86%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft53%
- Airline (crew, maintenance, boarding)38%
- Air traffic control and airport volume7%
- Severe weather2%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
PDX to SLC questions
- What time of day is best to fly PDX to SLC?
- Before 9 AM: 92% of flights arrived on time, against 84% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from PDX to SLC?
- Alaska, with a season-adjusted 90% chance of operating and arriving on time over 47 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on PDX to SLC?
- January (85% on time); the best was November (93%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from PDX
- SLC to PDX (return)
- PDX to SEA 84%
- PDX to LAX 87%
- PDX to DEN 80%
- PDX to PHX 80%
- PDX to SFO 75%
- PDX to LAS 81%
- PDX to ORD 77%
- PDX to DFW 80%
- PDX to SMF 83%
- PDX to SAN 80%
- PDX to SJC 82%
- PDX to ATL 87%
Live status: FAA delays and ground stops