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Route on-time record

SEA to RDM: most on-time flights and the best time to fly

Seattle (Seattle–Tacoma International Airport) to Redmond (Roberts Field). 1,968 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 1.6% were cancelled. The most reliable flight number was SkyWest 3735 at 9:27 AM.

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

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SEA → RDM

Seattle to Redmond: 1,968 nonstop flights a year

On time (12 months)

83%

Cancelled

1.6%

avg delay 9 min

Best time to leave

No clear winner

Most reliable airline

SkyWest

85% chance on time

Check SEA to RDM 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 · SkyWest 3735 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:27 AM → 10:42 AM1h 20m nonstop

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

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    2.3%
    Avg arrival delay
    5 min
    • Arrived on time 91% of the time (341 flights, Jun 2025 to May 2026).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).

    Strong track record · 341 flights

    Find 9:27 AM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 4047 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:51 PM → 11:07 PM1h 19m nonstop

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

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    2.0%
    Avg arrival delay
    8 min
    • Arrived on time 90% of the time (336 flights, Jun 2025 to May 2026).
    • Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.

    Strong track record · 336 flights

    Find 9:51 PM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 4141 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:00 PM → 4:13 PM1h 15m nonstop

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

    86%

    chance on time

    On time (history)
    87%
    Cancelled
    0.9%
    Avg arrival delay
    8 min
    • Arrived on time 87% of the time (345 flights, Jun 2025 to May 2026).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).

    Strong track record · 345 flights

    Find 3:00 PM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 3435 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:40 PM → 4:51 PM1h 11m nonstop

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

    74%

    chance on time

    On time (history)
    70%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 70% of the time (189 flights, Jun 2025 to May 2026).
    • Never cancelled in 189 scheduled flights.
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
    • 51% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 189 flights

    Find 3:40 PM flight fares Opens this date on Aviasales

  5. #5 · Alaska 667

    11:38 AM → 12:59 PM1h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 1497; its record covers all of them.

    73%

    chance on time

    On time (history)
    80%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 80% of the time (50 flights, Jun 2025 to May 2026).
    • Never cancelled in 50 scheduled flights.
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).

    Limited track record · 50 flights

    Find Alaska 667 fares Opens this date on Aviasales

  6. #6 · Alaska 409

    10:48 PM → 11:58 PM1h 10m nonstop

    Local times, typical schedule. Last flown 2026-05-11.

    71%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 90% of the time (20 flights, Jun 2025 to May 2026).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).

    Limited track record · 20 flights

    Find Alaska 409 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)85%

    1,394 flights · 86% on time as flown · 1.7% cancel

  • Alaska Airlines75%

    574 flights · 75% on time as flown · 1.4% cancel

On time by departure time

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

  • 9 AM to noon84%

    637 flights · avg delay 8 min

  • 3 to 6 PM82%

    546 flights · avg delay 9 min

  • 6 to 9 PM84%

    151 flights · avg delay 9 min

  • After 9 PM82%

    553 flights · avg delay 10 min

Best day: Tuesday (87%). Worst: Sunday (80%).

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
82
M
86
A
89
M
84
J
79
J
77
A
80
S
83
O
90
N
86
D
83

What delays this route

  • Airline (crew, maintenance, boarding)45%
  • Late-arriving aircraft28%
  • Severe weather15%
  • Air traffic control and airport volume10%
  • Security1%

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

Finding the most reliable connections from SEA to RDM…

SEA to RDM questions

Which airline is most on time from SEA to RDM?
SkyWest, with a season-adjusted 85% chance of operating and arriving on time over 1,394 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 SEA to RDM?
July (77% on time); the best was October (90%), 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.

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Live status: FAA delays and ground stops