Baltimore (BWI) to Ontario (ONT): On-Time Performance
Data through July 2026
Baltimore (BWI) to Ontario (ONT) is a thinner route than most in this dataset — 281 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 63% arrived on time, noticeably below the national average of 78%.
- On-time
- 63%
- arrived <15 min late
- Avg delay
- 24 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 0.77
- last 12 months
- Duration
- 5h 26m
- scheduled
- Distance
- 2,283 mi
Monthly on-time trend
Best time to fly from BWI to ONT
Aim for departures around 9 a.m. (84% on-time); avoid 8 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 63% | 25 min |
| Tuesday | 68% | 20 min |
| Wednesdaybest | 79% | 7 min |
| Thursday | 64% | 23 min |
| Friday | 62% | 24 min |
| Saturday | 48% | 41 min |
| Sunday | 59% | 24 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations41%
- National airspace system22%
- Weather4%
Frequently asked questions
- How often are flights from BWI to ONT delayed?
- 37% of BWI–ONT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 24 minutes.
- What is the best time of day to fly from BWI to ONT?
- Departures around 9 a.m. have the best record (84% on-time), while departures around 8 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BWI to ONT?
- The scheduled BWI–ONT flight time averages 5h 26m over 2,283 miles. Actual arrival times vary — flights on this route land 15+ minutes late 37% of the time.
- How often are BWI to ONT flights cancelled?
- 0.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What day of the week is most reliable for BWI to ONT?
- Wednesday flights have the best record at 79% on-time. Day-of-week differences on this route are meaningful — Saturday trails at 48%.
Explore related pages
More routes from BWI
Other ways to fly to Ontario (ONT)
Related guides
Based on 338 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.