Route
BNA → ONT
Nashville International Airport Ontario International Airport
1,751 miles
Return route ONT → BNA →
How punctual is this route?
- On-time arrivals
- 66.9%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 46 min
- Flights arriving 15+ minutes late
- Flights tracked
- 336
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 41%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 16%
- Extreme weather 4%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 73.3% | 30 |
| October 2025 | 45.2% | 31 |
| November 2025 | 89.7% | 29 |
| December 2025 | 71.0% | 31 |
| January 2026 | 84.6% | 14 |
| February 2026 | 68.4% | 19 |
| March 2026 | 86.2% | 29 |
| April 2026 | 66.7% | 30 |
| May 2026 | 67.7% | 31 |
| June 2026 | 33.3% | 30 |
| July 2026 | 67.7% | 31 |
| August 2026 | 61.3% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 336 | 66.9% | 0.3% | 46 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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