Ontario (ONT) to San Diego (SAN) flights
Southwest Airlines flies nonstop from Ontario International Airport to San Diego International Airport, with about 1 flights a week in July 2026. The 94-mile flight takes about 52m gate to gate.
From
ONT
Ontario
Ontario International Airport
To
SAN
San Diego
San Diego International Airport
- Distance
- 94 mi · 151 km
- Flight time
- 52m
- Airlines
- 1
- Seats filled
- 66%
Flights a week, July 2026
36 flights and 3,944 passengers in 12 months
Airlines flying ONT to SAN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | <1 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 1,937 | 48m |
| Delta Air LinesSeasonal or ended | n/a | Airbus A321, Boeing 737-800, Airbus A220-100 | 2,007 | 58m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| September 2025 | 6 | 711 | |
| October 2025 | 14 | 1,018 | |
| November 2025 | 2 | 121 | |
| December 2025 | 8 | 786 | |
| January 2026 | 16 | 1,668 | |
| February 2026 | 6 | 613 | |
| March 2026 | 3 | 382 | |
| May 2026 | 1 | 125 | |
| July 2026 | 6 | 713 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.