Which airports can I use when flying from San Diego to Ontario?

Flights from San Diego to Ontario usually depart from San Diego (SAN) and arrive at Ontario (ONT).

What cabin classes can I book on flights from San Diego to Ontario?

Only Economy Class is available on flights from San Diego to Ontario.

Which airports do connecting flights from San Diego to Ontario pass through?

Most connecting flights from San Diego to Ontario pass through San Francisco (SFO), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from San Diego to Ontario?

Yes. Flexible dates can save you up to 3% on flights from San Diego to Ontario. Tuesday is the cheapest departure day at $450 round-trip on average, while Wednesday is the most expensive at $463, a difference of $13. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ontario?

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Do I need a passport to fly from San Diego to Ontario?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

How are flight prices from San Diego to Ontario looking right now?

One-way fares from San Diego to Ontario are currently lower than usual. Average one-way flight prices are about $61, which is 56% below the typical average for this route.

What car rental options are available at Ontario Airport (ONT)?

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include: • Fox • Thrifty • Europcar • Dollar • Alamo

How much is a round-trip flight from San Diego to Ontario?

Round-trip flights from San Diego to Ontario typically range from $450 to $463. The lowest price found in the past 5 days was $90, on Frontier.

Which airline is the cheapest to fly from San Diego to Ontario?

Frontier ($90) offered the cheapest round-trip ticket from San Diego to Ontario in the last 5 days.

What is the cheapest layover airport when flying from San Diego to Ontario?

Flights via San Francisco (SFO) offer the most affordable fares, with an average round-trip price of $463. Based on KAYAK data over the past 3 months.

When flying from San Diego to Ontario which airport offers the shortest layover?

San Francisco (SFO) had the shortest average connection time for San Diego to Ontario layovers at 7h 24m over the past 3 months.

$44 CHEAP FLIGHTS from San Diego to Ontario (SAN - ONT)

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$90

Typical prices: $450-$463

Frontier

Sat 12/1Sat 12/8

SAN - ONT • 1 stop

Cheapest one-way

$44

Typical prices: $137-$175

Frontier

Sat 12/1

SAN - ONT • 1 stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Ontario!

Flight Deals

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

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from San Diego to Ontario

Tue, Dec 1 - Tue, Dec 8

12:32 pm - 6:11 pmSAN San Diego-ONT Ontario

5h 39m1 stop Las Vegas Harry Reid Intl

7:26 pm - 6:16 pmONT Ontario-SAN San Diego

22h 50m1 stop San Francisco

$90Frontier

Wed, Dec 16 - Thu, Dec 17

8:57 am - 6:31 pmSAN San Diego-ONT Ontario

9h 34m1 stop Las Vegas Harry Reid Intl

9:00 am - 12:29 pmONT Ontario-SAN San Diego

3h 29m1 stop Las Vegas Harry Reid Intl

$101Frontier

Tue, Dec 1 - Tue, Dec 8

12:32 pm - 6:11 pmSAN San Diego-ONT Ontario

5h 39m1 stop Las Vegas Harry Reid Intl

8:44 am - 6:16 pmONT Ontario-SAN San Diego

9h 32m2 stops Las Vegas Harry Reid Intl San Francisco

$109Frontier

Fri, Nov 13 - Wed, Jan 13

8:20 pm - 9:05 amSAN San Diego-ONT Ontario

12h 45m1 stop Las Vegas Harry Reid Intl

6:27 pm - 2:38 pmONT Ontario-SAN San Diego

20h 11m1 stop Las Vegas Harry Reid Intl

$122Frontier

Fri, Nov 13 - Sat, Jan 9

8:20 pm - 9:05 amSAN San Diego-ONT Ontario

12h 45m1 stop Las Vegas Harry Reid Intl

3:33 pm - 12:34 pmONT Ontario-SAN San Diego

21h 01m1 stop Las Vegas Harry Reid Intl

$123Frontier

Wed, Dec 16 - Thu, Dec 17

9:58 am - 6:31 pmSAN San Diego-ONT Ontario

8h 33m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

9:00 am - 12:29 pmONT Ontario-SAN San Diego

3h 29m1 stop Las Vegas Harry Reid Intl

$126Frontier

Fri, Nov 13 - Tue, Jan 12

8:20 pm - 9:05 amSAN San Diego-ONT Ontario

12h 45m1 stop Las Vegas Harry Reid Intl

6:27 pm - 7:38 pmONT Ontario-SAN San Diego

25h 11m2 stops Las Vegas Harry Reid Intl Oakland

$129Frontier

Fri, Nov 13 - Mon, Jan 11

8:20 pm - 9:05 amSAN San Diego-ONT Ontario

12h 45m1 stop Las Vegas Harry Reid Intl

12:26 pm - 7:38 pmONT Ontario-SAN San Diego

31h 12m2 stops Las Vegas Harry Reid Intl Oakland

$134Frontier

Wed, Nov 11 - Wed, Jan 13

11:06 am - 11:16 amSAN San Diego-ONT Ontario

24h 10m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

6:27 pm - 2:38 pmONT Ontario-SAN San Diego

20h 11m1 stop Las Vegas Harry Reid Intl

$143Frontier

Mon, Nov 9 - Wed, Jan 13

7:38 pm - 9:40 amSAN San Diego-ONT Ontario

38h 02m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

6:27 pm - 2:38 pmONT Ontario-SAN San Diego

20h 11m1 stop Las Vegas Harry Reid Intl

$144Frontier

Recent last minute flight deals from San Diego to Ontario

Wed, Oct 28 - Thu, Oct 29

6:25 am - 4:21 pmSAN San Diego-ONT Ontario

9h 56m2 stops Denver Intl Las Vegas Harry Reid Intl

12:01 pm - 6:38 pmONT Ontario-SAN San Diego

6h 37m1 stop San Francisco

$494Frontier

Sat, Oct 31 - Wed, Nov 4

4:53 pm - 12:16 pmSAN San Diego-ONT Ontario

19h 23m2 stops Denver Intl Las Vegas Harry Reid Intl

5:07 pm - 6:38 pmONT Ontario-SAN San Diego

25h 31m2 stops Las Vegas Harry Reid Intl San Francisco

$501Frontier

Wed, Oct 28 - Thu, Oct 29

4:53 pm - 11:16 amSAN San Diego-ONT Ontario

18h 23m2 stops Denver Intl Las Vegas Harry Reid Intl

8:35 pm - 4:08 pmONT Ontario-SAN San Diego

19h 33m2 stops Las Vegas Harry Reid Intl Denver Intl

$602Frontier

Wed, Oct 28 - Sun, Nov 1

7:33 pm - 11:16 amSAN San Diego-ONT Ontario

15h 43m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

12:01 pm - 6:38 pmONT Ontario-SAN San Diego

6h 37m1 stop San Francisco

$669Frontier

Sat, Oct 31 - Wed, Nov 4

4:53 pm - 12:16 pmSAN San Diego-ONT Ontario

19h 23m2 stops Denver Intl Las Vegas Harry Reid Intl

5:33 pm - 8:37 amONT Ontario-SAN San Diego

15h 04m1 stop Dallas/Fort Worth

$672Frontier

Wed, Oct 28 - Sun, Nov 1

7:33 pm - 11:16 amSAN San Diego-ONT Ontario

15h 43m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

2:23 pm - 10:11 amONT Ontario-SAN San Diego

19h 48m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$680Frontier

Wed, Oct 28 - Thu, Oct 29

4:53 pm - 11:51 pmSAN San Diego-ONT Ontario

6h 58m1 stop Denver Intl

12:01 pm - 6:38 pmONT Ontario-SAN San Diego

6h 37m1 stop San Francisco

$692Frontier

Thu, Oct 29 - Sat, Oct 31

10:48 am - 7:28 pmSAN San Diego-ONT Ontario

8h 40m1 stop San Francisco

6:25 am - 3:58 pmONT Ontario-SAN San Diego

9h 33m1 stop Denver Intl

$830Frontier

Thu, Oct 29 - Sat, Oct 31

10:48 am - 7:28 pmSAN San Diego-ONT Ontario

8h 40m1 stop San Francisco

10:00 am - 6:38 pmONT Ontario-SAN San Diego

8h 38m2 stops Las Vegas Harry Reid Intl San Francisco

$832Frontier

Thu, Oct 29 - Sat, Oct 31

9:32 am - 7:08 pmSAN San Diego-ONT Ontario

9h 36m1 stop Dallas/Fort Worth

6:25 am - 3:58 pmONT Ontario-SAN San Diego

9h 33m1 stop Denver Intl

$833Frontier

Booking Insights

Price, demand and travel trends for San Diego to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from San Diego to Ontario? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Ontario departing in december.

Find deals

Cheapest flight	$44

One-way flight from San Diego to Ontario

When to book flights from San Diego to Ontario

Are your dates flexible? Find out the best times to travel from San Diego to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from San Diego to Ontario?
Only Economy Class is available on flights from San Diego to Ontario.
Do I need a passport to fly from San Diego to Ontario?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.
How are flight prices from San Diego to Ontario looking right now?
One-way fares from San Diego to Ontario are currently lower than usual. Average one-way flight prices are about $61, which is 56% below the typical average for this route.
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

• Fox
• Thrifty
• Europcar
• Dollar
• Alamo
Which airports can I use when flying from San Diego to Ontario?
Flights from San Diego to Ontario usually depart from San Diego (SAN) and arrive at Ontario (ONT).
Which airports do connecting flights from San Diego to Ontario pass through?
Most connecting flights from San Diego to Ontario pass through San Francisco (SFO), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from San Diego to Ontario?
Yes. Flexible dates can save you up to 3% on flights from San Diego to Ontario. Tuesday is the cheapest departure day at $450 round-trip on average, while Wednesday is the most expensive at $463, a difference of $13.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Ontario?
Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

If your dates are flexible, aim for a Tuesday departure and avoid flying on Wednesday. On this route, Tuesday flights average $450, about $13 less than Wednesday fares (3% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

• Ontario Airport Inn
• Holiday Inn Ontario Airport By IHG
• Azure Hotel & Suites, Trademark Collection by Wyndham

More options for your flight from San Diego to Ontario

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario

Hotels in Ontario

Vacations in Ontario

SAN - ONT

$44 Find Cheap Flights from San Diego to Ontario - Compare and Save

Everything you should know

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

Recent round-trip flight deals from San Diego to Ontario

Recent one-way flight deals from San Diego to Ontario

Recent last minute flight deals from San Diego to Ontario

Price, demand and travel trends for San Diego to Ontario flights

How much is a round-trip flight from San Diego to Ontario?

Which airline is the cheapest to fly from San Diego to Ontario?

What is the cheapest layover airport when flying from San Diego to Ontario?

When flying from San Diego to Ontario which airport offers the shortest layover?

Key details for San Diego to Ontario flights

Cheapest flight

When to book flights from San Diego to Ontario

Your San Diego to Ontario flight questions, answered

Your guide to booking San Diego to Ontario flights

More options for your flight from San Diego to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from San Diego to Ontario

Find direct flights to and from San Diego and Ontario

Flights from domestic origins to Ontario

Flights to other popular destinations

Find deals for your return flight