€174 Cheap Flights Ontario to San Diego (ONT-SAN)

View €174 flight on Sat, 9 May 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to San Diego Intl. Airport (SAN)

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Cheap flights from Ontario to San Diego (ONT-SAN)

Prices were available within the past 7 days and start at €174 for one-way flights and €388 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€388 Return, found 12 hours ago
€388
Return
found 12 hours ago
Select American Airlines flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €388 found 12 hours ago
Delta
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€427 Return, found 12 hours ago
€427
Return
found 12 hours ago
Select Delta flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €427 found 12 hours ago
Delta
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€430 Return, found 12 hours ago
€430
Return
found 12 hours ago
Select Delta flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €430 found 12 hours ago
American Airlines
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€434 Return, found 12 hours ago
€434
Return
found 12 hours ago
Select American Airlines flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €434 found 12 hours ago
United
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€460 Return, found 12 hours ago
€460
Return
found 12 hours ago
Select United flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €460 found 12 hours ago
American Airlines
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€461 Return, found 12 hours ago
€461
Return
found 12 hours ago
Select American Airlines flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €461 found 12 hours ago
United
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€468 Return, found 12 hours ago
€468
Return
found 12 hours ago
Select United flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €468 found 12 hours ago
Delta
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€493 Return, found 12 hours ago
€493
Return
found 12 hours ago
Select Delta flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €493 found 12 hours ago
United
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€497 Return, found 12 hours ago
€497
Return
found 12 hours ago
Select United flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €497 found 12 hours ago
Delta
Sat, 9 May - Mon, 11 May
ONT
Ontario
SAN
San Diego
€498 Return, found 12 hours ago
€498
Return
found 12 hours ago
Select Delta flight, departing Sat, 9 May from Ontario to San Diego, returning Mon, 11 May, priced at €498 found 12 hours ago

Frequently asked questions

How much is a flight from ONT to San Diego Airport?
Start packing your suitcase, because round-trip journeys between ONT and San Diego Airport start from €388. That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book now to secure the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from ONT to San Diego Airport?
We understand that things come up unexpectedly, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Los Angeles - Ontario Intl. Airport (ONT) to SAN that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to San Diego Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to SAN?
You can forget about a movie marathon on this flight — it's just 150 kilometres from Ontario to San Diego. Sit down, get comfortable and you'll be touching down before long.
Which airlines fly direct from Ontario Airport to SAN?
You won't find any airlines operating directly between ONT and San Diego Airport, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a good way to break up a trip!
Are Los Angeles - Ontario Intl. Airport (ONT) to San Diego Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up a fantastic last-minute deal from ONT to San Diego Intl. Airport (SAN), but it can also be hit-or-miss. As many airlines release seats up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you spot a good bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can rest easy knowing you're always getting the latest offers.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Diego Intl.
Return price
€388
Distance
151 km

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