Alaska Airlines
AS1254Seattle to Ontario
Alaska Airlines flight AS1254 flies from Seattle Tacoma (SEA) to Ontario (ONT), 1,540 km. Over August 2025 to October 2025 it usually arrives right on schedule: 86% of 79 flights arrived within 15 minutes of schedule and 1.3% were cancelled (US Department of Transportation data).
On-time record, last 12 months
86%
on time (within 15 min)
10%
more than 30 min late
1.3%
cancelled
+1 min
average arrival vs schedule
Every operation of AS1254, August 2025 to October 2025: 79 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as AS1254
- Seattle Tacoma (SEA) to Ontario (ONT)79 flights
Other flights from Seattle to Ontario
More about Seattle Tacoma (SEA) and Ontario (ONT).
Embed this on your site
A live badge for travel blogs, forums and trip reports. It updates as new data comes in, and links back here for the full stats.
Dark badge, HTML
<a href="https://tripstow.com/flights/as1254" title="AS1254 is on time 86% of the time on TripStow"><img src="https://tripstow.com/badge/flights/as1254.svg" alt="AS1254 is on time 86% of the time" width="360" height="88" loading="lazy"></a>
Light badge, HTML
<a href="https://tripstow.com/flights/as1254" title="AS1254 is on time 86% of the time on TripStow"><img src="https://tripstow.com/badge/flights/as1254.svg?theme=light" alt="AS1254 is on time 86% of the time" width="360" height="88" loading="lazy"></a>Markdown, for forums and README files
[](https://tripstow.com/flights/as1254)Flying soon?
Forward your booking to TripStow and get your trip built for you, with check-in reminders, punctuality for every flight and a map of everywhere you have been.
Start free