Ontario International Airport
Ontario, United StatesONT / KONT
Major airport · 63 direct destinations · 2 runways · longest runway 12,198 ft
82 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Ontario → San Diego
ONT
OntarioOntario International Airport
OntarioOntario International AirportSANSan DiegoSan Diego International Airport
San DiegoSan Diego International Airport- Distance
- 94 mi
- Estimated flight time
- ~40m
Same local time in Ontario and San Diego.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1.5
- busiest month · Jan
- 1
- quietest month · Oct
- 25 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1.5Jan2026
- 1Feb
- 1Mar
- 1Apr
- 1May
- 1Jun
- 1Jul
- 1Aug
- 1Sep
- 1Oct2025
- 1Nov
- 1Dec
Airlines
Who flies it
FedExall year
Southwest Airlinesautumn
Alaska Airlinesautumn
Delta Air Linesautumn
American Airlineswinter
Westair Industriesnow and then
SkyWest Airlinesnow and then
UPS Airlinesnow and then
Through the day
Departure times
Local time in Ontario. Most departures between 04:00 and 07:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0.3Mon
- 0.3Tue
- 0.4Wed
- 0.3Thu
- 0.8Fri
- 1.3Sat
- 0.3Sun
Fleet
Aircraft observed
- Boeing 767-300B76330%
- Dassault Falcon 900F9006%
- Cessna 208 CaravanC2084%
- Boeing 737-700B7374%
- Boeing 737-800B7384%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1.5 | 27 |
|
| February 2026 | 1 | 18 |
|
| March 2026 | 1 | 16 |
|
| April 2026 | 1 | 6 |
|
| May 2026 | 1 | 13 |
|
| June 2026 | 1 | 8 |
|
| July 2026 | 1 | 14 |
|
| August 2026 | 1 | 14 |
|
| September 2026 | 1 | 12 |
|
| October 2025 | 1 | 26 |
|
| November 2025 | 1 | 17 |
|
| December 2025 | 1 | 14 |
|
Airlines observed on this route
From observed callsign routes on ONT-SAN - not a booking guarantee.
Alaska Airlines
AS · ASAHub: SEA Seattle
American Airlines
AA · AALHub: DFW Dallas-Fort Worth
Delta Air Lines
DL · DALHub: ATL Atlanta
FedEx
FX · FDXHub: MEM Memphis
SkyWest Airlines
OO · SKWHub: ORD Chicago
Southwest Airlines
WN · SWAHub: DEN Denver
UPS Airlines
5X · UPSHub: SDF Louisville
Westair Industries
PCMHub: ONT Ontario
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Ontario: 63.
- Direct destinations observed from San Diego: 90.
The airports on this route
San Diego International Airport
San Diego, United StatesSAN / KSAN
Major airport · 90 direct destinations · 1 runway · longest runway 9,400 ft
77 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
ONT TIJGeneral Abelardo L. Rodriguez International AirportTijuana is about 19 mi from San Diego.View route →SNA SANJohn Wayne Orange County International AirportSanta Ana is about 30 mi from Ontario.View route →BUR SANHollywood Burbank/Bob Hope AirportBurbank is about 45 mi from Ontario.View route →LAX SANLos Angeles International AirportLos Angeles is about 47 mi from Ontario.View route →
About the route from Ontario to San Diego
The observed direct connection between Ontario International Airport (ONT) and San Diego International Airport (SAN) covers approximately 94 mi. The estimated flight time is around 40m. Alaska Airlines, American Airlines, Delta Air Lines, FedEx, SkyWest Airlines, Southwest Airlines, UPS Airlines and Westair Industries have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Ontario from San Diego by air?
- The great-circle distance between Ontario International Airport and San Diego International Airport is approximately 94 mi.
- How long is the flight from Ontario to San Diego?
- Based on the distance, the estimated flight time is about 40m. This is an estimate, not a schedule.
- Is there a direct connection from Ontario to San Diego?
- Yes, a direct connection between ONT and SAN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Alaska Airlines, American Airlines, Delta Air Lines, FedEx, SkyWest Airlines, Southwest Airlines, UPS Airlines and Westair Industries.
- How often is there a flight from Ontario to San Diego?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 185 observed flights. Mainly FedEx, Southwest Airlines, Alaska Airlines. That is an observation, not a timetable.
- What is the current time difference between Ontario and San Diego?
- Same local time in Ontario and San Diego.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.