Ontario to San Diego (ONT–SAN) — Airlines, Schedules & Connections

ONT Airport Page →
94 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 27 1-stop flights Verified 1w ago
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 10 hubs
LAS Las Vegas 3h 5m EJAF9WN → ASDLF9 Las Vegas (LAS) to San Diego flights
PHX Phoenix 3h 16m AAPDWN → AAASBA Phoenix (PHX) to San Diego flights
SJC San Jose 3h 23m WN → ASEJAWN San Jose (SJC) to San Diego flights
OAK Oakland 3h 30m WN → ASWN Oakland (OAK) to San Diego flights
SMF Sacramento 3h 40m WN → ASJLWN Sacramento (SMF) to San Diego flights
SFO San Francisco 3h 59m ACCMF9 → ACASAZ San Francisco (SFO) to San Diego flights
SLC Salt Lake City 4h 42m AFAMDL → AFASBA Salt Lake City (SLC) to San Diego flights
BOI Boise 4h 59m AS → ASJLWN Boise (BOI) to San Diego flights
SBA Santa Barbara 5h 15m EMPCM → ASWN Santa Barbara (SBA) to San Diego flights
DEN Denver 5h 25m ACF9UA → ACASCM Denver (DEN) to San Diego flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Ontario to San Diego
Connecting service available through multiple hubs.
1 Airlines 94 mi 0h 43m nonstop

ONT–SAN had nonstop service from Southwest Airlines, last on the schedule in July 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 94 miles in 0h 43m.

Also explore ONT Routes SAN Routes ONT Live Flights SAN Live Flights ONT Delays SAN Delays
All flights from San Diego (SAN) San Diego to Ontario flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop ONT–SAN service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 1 – – 86% – –
Alliance coverage
Unaffiliated: WN (1 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for ONT to SAN.
1-STOP
One-Stop Connections
27
Hubs
~3h
Fastest
~14h
Longest
LAS ~3h 5m PHX ~3h 16m SJC ~3h 23m OAK ~3h 30m SMF ~3h 40m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,416
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
ONT → SAN
86%
Generally reliable. Most flights run on time.
Departing
86%
Arriving
76%
Return
SAN → ONT
82%
Generally reliable. Most flights run on time.
Departing
82%
Arriving
85%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ONT delays → SAN delays →
Alternatives

Other ways to reach San Diego from Ontario

Nearby airports with service to San Diego International Airport.
Metric ONT→SAN SBD→SAN SNA→SAN
Distance from ONT – 21 mi 30 mi
Nonstop airlines – 2 4
Weekly flights – – –
Flight time 0h 43m 0h 32m 0h 32m
Departure OTP 86% – –
San Bernardino (SBD) to San Diego flights · Santa Ana (SNA) to San Diego flights · Long Beach (LGB) to San Diego flights
Airports within 200 miles of ONT with service to San Diego International Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
0h
San Diego is 0 hours the same as Ontario.
ONT: PDT · SAN: PDT

When it's 6:00 PM in Ontario, it's 6:00 PM in San Diego.
Distance & Flight Time
94 mi / 152 km
Nonstop flight time is approximately 0h 43m gate to gate.
Facts

ONT–SAN Quick Facts

Key statistics for the Ontario to San Diego route.
Route details
Distance94 mi / 152 km
Flight time0h 43m
Time difference0 hours
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
Destination: SAN
Full nameSan Diego International Airport
IATA / ICAOSAN / KSAN
TimezoneAmerica/Los_Angeles
Passengers/yr25.6M
Elevation17 ft / 5 m
FAQ

Frequently Asked Questions

Common questions about ONT to SAN flights.
Nonstop flights from Ontario International Airport to San Diego International Airport take about 0h 43m gate to gate. The route covers 94 miles.
1 airline operated the nonstop from ONT to SAN: Southwest Airlines. The last scheduled nonstop was in July 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in July 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 0h 43m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Harry Reid, Phoenix Sky Harbor and Norman Y. Mineta San Jose.
Nearby alternatives include SBD, SNA and LGB. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from ONT to SAN

Ontario International Airport (ONT) and San Diego International Airport (SAN) had nonstop service from Southwest Airlines, last on the schedule in July 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

ONT to SAN Flight Duration and Schedule

Nonstop flight time from ONT to SAN is about 0 hours 43 minutes gate to gate. The route covers a distance of 94 miles (152 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Harry Reid, Phoenix Sky Harbor and Norman Y. Mineta San Jose. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include San Bernardino (SBD), Santa Ana (SNA) and Long Beach (LGB).