AS491

AS491 (Alaska Airlines) is a multi-stop service on 4 routes, busiest Burbank to Seattle. Of 376 departures recorded from June 2025 to July 2026, 90.6% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

The most recent periods14 periods
PeriodDepartures 2025Departures 2026Change vs last year
January–31–
February–28–
March–31–
April–29–
May–30–
June1930▲ 57.9%
July31310.0%
August28––
September21––
October8–in progress
November30––
December29––

according to the US BTS · June 2025 → July 2026

On-time departures by month

All legs combined

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods14 periods
PeriodOn time 2025On time 2026Change vs last year
January–96.7%–
February–96.4%–
March–87.1%–
April–93.1%–
May–100.0%–
June79.0%100.0%▲ 26.7%
July86.7%96.8%▲ 11.7%
August78.6%––
September95.2%––
October100.0%–in progress
November80.0%––
December82.1%––

according to the US BTS · June 2025 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · June 2025 → July 2026

Cancelled departures by month

All legs combined
The most recent periods14 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January–1–
February–0–
March–0–
April–0–
May–0–
June00–
July10▼ 100.0%
August0––
September0––
October0–in progress
November0––
December1––

according to the US BTS · June 2025 → July 2026

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 99.2% 373
  • Cancelled 0.8% 3

Share of all recorded flights in the period, all legs. · Jun 12, 2025 → Jul 31, 2026

On time, leg by leg

  1. BUR–SEA207 92.7%
  2. SEA–DFW101 85.0%
  3. OAK–SEA52 98.1%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

3
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
June 2025 19 19 79.0% 0
July 2025 31 30 86.7% 1
August 2025 28 28 78.6% 0
September 2025 21 21 95.2% 0
October 2025 8 8 100.0% 0
November 2025 30 30 80.0% 0
December 2025 29 28 82.1% 1
January 2026 31 30 96.7% 1
February 2026 28 28 96.4% 0
March 2026 31 31 87.1% 0
April 2026 29 29 93.1% 0
May 2026 30 30 100.0% 0
June 2026 30 30 100.0% 0
July 2026 31 31 96.8% 0

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