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Route on-time record

SLC to PDX: most on-time flights and the best time to fly

Salt Lake City (Salt Lake City International Airport) to Portland (Portland International Airport). 2,399 nonstop flights in Jun 2025 to May 2026, 88% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was Alaska 413 at 12:42 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

SLC → PDX

Salt Lake City to Portland: 2,399 nonstop flights a year

On time (12 months)

88%

Cancelled

1.0%

avg delay 8 min

Best time to leave

Before 9 AM

91% on time vs 71% 6 to 9 PM

Most reliable airline

Alaska

91% chance on time

Check SLC to PDX fares

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. #1 · Alaska 413

    12:42 PM → 1:49 PM2h 07m nonstop

    Local times, typical schedule. Last flown 2026-03-16.

    95%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (25 flights, Jun 2025 to May 2026).
    • Short track record (25 flights), so its score leans on the airline's record at this hour.

    Limited track record · 25 flights

    Find Alaska 413 fares Opens this date on Aviasales

  2. #2 · SkyWest 3360 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:22 PM → 4:28 PM2h 06m nonstop

    Local times, typical schedule. Last flown 2026-05-12.

    91%

    chance on time

    On time (history)
    94%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 94% of the time (65 flights, Jun 2025 to May 2026).
    • Never cancelled in 65 scheduled flights.

    Moderate track record · 65 flights

    Find 3:22 PM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 3497 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:35 AM → 9:41 AM2h 06m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 3430; its record covers all of them.

    88%

    chance on time

    On time (history)
    87%
    Cancelled
    0.3%
    Avg arrival delay
    8 min
    • Arrived on time 87% of the time (398 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 71%).

    Strong track record · 398 flights

    Find 8:35 AM flight fares Opens this date on Aviasales

  4. #4 · Delta 1373

    10:50 PM → 11:54 PM1h 58m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    88%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (348 flights, Jun 2025 to May 2026).
    • Never cancelled in 348 scheduled flights.

    Strong track record · 348 flights

    Find Delta 1373 fares Opens this date on Aviasales

  5. #5 · Delta 1209

    11:20 AM → 12:33 PM1h 57m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    87%

    chance on time

    On time (history)
    88%
    Cancelled
    1.1%
    Avg arrival delay
    9 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

  6. #6 · Delta 1203

    8:00 AM → 8:56 AM2h 01m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    2.4%
    Avg arrival delay
    6 min
    • Arrived on time 89% of the time (161 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 71%).

    Moderate track record · 161 flights

    Find Delta 1203 fares Opens this date on Aviasales

  7. #7 · Delta 1244

    3:00 PM → 4:01 PM1h 57m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    86%

    chance on time

    On time (history)
    88%
    Cancelled
    0.6%
    Avg arrival delay
    8 min
    • Arrived on time 88% of the time (168 flights, Jun 2025 to May 2026).

    Moderate track record · 168 flights

    Find Delta 1244 fares Opens this date on Aviasales

  8. #8 · Delta 1238

    5:10 PM → 6:08 PM1h 56m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    84%

    chance on time

    On time (history)
    88%
    Cancelled
    5.5%
    Avg arrival delay
    8 min
    • Arrived on time 88% of the time (86 flights, Jun 2025 to May 2026).
    • Cancelled 5.5% of the time (5 of 91).

    Moderate track record · 86 flights

    Find Delta 1238 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Alaska Airlines91%

    46 flights · 98% on time as flown · 0.8% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)89%

    604 flights · 89% on time as flown · 0.6% cancel

  • Delta Air Lines87%

    1,697 flights · 88% on time as flown · 1.1% cancel

  • Frontier Airlines74%

    52 flights · 61% on time as flown · 2.2% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM91%

    653 flights · avg delay 6 min

  • 9 AM to noon88%

    393 flights · avg delay 8 min

  • Noon to 3 PM88%

    101 flights · avg delay 7 min

  • 3 to 6 PM88%

    730 flights · avg delay 7 min

  • 6 to 9 PM71%

    158 flights · avg delay 24 min

  • After 9 PM88%

    364 flights · avg delay 6 min

Best day: Wednesday (90%). Worst: Friday (84%).

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.

J
81
F
85
M
87
A
90
M
91
J
85
J
83
A
88
S
91
O
92
N
91
D
85

What delays this route

  • Airline (crew, maintenance, boarding)52%
  • Late-arriving aircraft37%
  • Air traffic control and airport volume8%
  • Severe weather3%

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

SLC to PDX questions

What time of day is best to fly SLC to PDX?
Before 9 AM: 91% of flights arrived on time, against 71% 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 SLC to PDX?
Alaska, with a season-adjusted 91% chance of operating and arriving on time over 46 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 SLC to PDX?
January (81% on time); the best was October (92%), 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 SLC

Live status: FAA delays and ground stops