ONT to HNL flight delays & on-time performance
Nonstop flights from Ontario International Airport to Daniel K. Inouye International Airport · 2,603 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ONT or HNL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Ontario (ONT) to Honolulu (HNL) arrived on time 87% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.2% were cancelled, and 3% arrived an hour or more late.
- Southwest Airlines was the most punctual airline here (98% on time); Alaska Airlines was the least (85%).
- Departures scheduled around 11am did best (100% on time); around 9am did worst (80%).
- Sunday was the most reliable day to fly (90% on time) and Monday the least (83%).
- The largest source of delay minutes was air traffic control & airport congestion (60%).
Which airline is most on time from ONT to HNL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 98% | 0.0% | 3 min | 0.0% | 58 |
| Alaska Airlines | 85% | 0.3% | 9 min | 3.3% | 365 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am96%27 flights
- 8am88%228 flights
- 9am80%124 flights
- 10am86%22 flights
- 11am100%22 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%0.0% cancelled
- Tuesday85%0.0% cancelled
- Wednesday87%0.0% cancelled
- Thursday87%0.0% cancelled
- Friday89%1.6% cancelled
- Saturday87%0.0% cancelled
- Sunday90%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion60%
- Airline (crew, maintenance, cleaning, fueling)39%
- Extreme weather1%
- Late-arriving aircraft0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)100%
- Extreme weather0%
- Air traffic control & airport congestion0%
- Security0%
ONT to HNL: common questions
- How often are ONT to HNL flights on time?
- 87% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Ontario to Honolulu cancelled?
- 0.2% of scheduled flights were cancelled (1 of 423).
- How long are typical delays?
- Across all flights the average arrival delay was 8 min (early arrivals count as zero). Flights that were late arrived 49 min behind schedule on average, and 2.8% of flights were an hour or more late.
- How long is taxi time at ONT?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: HNL to ONT — 77% on time
More flights from Ontario
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ONT → HNL, nonstop flights by US airlines that report to the DOT. How we calculate this.