Cheap flights from Ontario to San Diego from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to San Diego departing on 8/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Frontier Logo
7:00 am - 6:19 pmONT-SAN
11h 19m1 stop
Frontier Logo
7:04 pm - 11:53 amSAN-ONT
16h 49m1 stop
$134Frontier
Find Deal
Wed, Aug 6 - Sun, Aug 10
Frontier Logo
10:13 pm - 8:04 pmONT-SAN
21h 51m1 stop
Frontier Logo
8:00 am - 4:18 pmSAN-ONT
8h 18m1 stop
$148Frontier
Find Deal
Fri, Aug 29 - Tue, Sep 2
Frontier Logo
7:30 pm - 11:17 pmONT-SAN
3h 47m1 stop
Frontier Logo
8:00 am - 9:56 pmSAN-ONT
13h 56m1 stop
$160Frontier
Find Deal
Sun, Sep 7 - Wed, Sep 10
Frontier Logo
1:37 pm - 6:37 pmONT-SAN
5h 00m1 stop
Frontier Logo
6:25 am - 8:54 pmSAN-ONT
14h 29m1 stop
$163Frontier
Find Deal
Sat, Oct 18 - Mon, Oct 20
Frontier Logo
8:00 am - 9:24 pmONT-SAN
13h 24m1 stop
Frontier Logo
12:23 pm - 8:56 pmSAN-ONT
8h 33m1 stop
$167Frontier
Find Deal
Tue, Sep 16 - Thu, Sep 18
Frontier Logo
9:58 pm - 3:48 pmONT-SAN
17h 50m1 stop
Frontier Logo
8:00 am - 9:56 pmSAN-ONT
13h 56m1 stop
$168Frontier
Find Deal
Sun, Sep 14 - Wed, Sep 17
Frontier Logo
9:41 pm - 3:02 pmONT-SAN
17h 21m1 stop
Frontier Logo
9:58 am - 11:40 pmSAN-ONT
13h 42m1 stop
$173Frontier
Find Deal
Fri, Oct 24 - Sun, Oct 26
Frontier Logo
6:00 am - 12:08 pmONT-SAN
6h 08m1 stop
Frontier Logo
1:03 pm - 8:52 pmSAN-ONT
7h 49m1 stop
$175Frontier
Find Deal
Mon, Aug 11 - Mon, Aug 18
American Airlines Logo
4:54 pm - 7:38 pmONT-SAN
26h 44m1 stop
American Airlines Logo
4:20 pm - 4:05 pmSAN-ONT
23h 45m1 stop
$183American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
American Airlines Logo
12:22 pm - 9:55 pmONT-SAN
9h 33m1 stop
American Airlines Logo
6:15 am - 4:24 pmSAN-ONT
10h 09m1 stop
$214American Airlines
Find Deal
Thu, Aug 7 - Sat, Aug 9

Frontier flights from Ontario to San Diego

Our best Frontier deals on Ontario to San Diego flight tickets
Frontier
Aug 6
ONT7:00 amOntario
11h 19m
1 stop
SAN6:19 pmSan Diego
Aug 10
SAN7:04 pmSan Diego
16h 49m
1 stop
ONT11:53 amOntario
Frontier
Aug 29
ONT10:13 pmOntario
21h 51m
1 stop
SAN8:04 pmSan Diego
Sep 2
SAN8:00 amSan Diego
8h 18m
1 stop
ONT4:18 pmOntario
Frontier
Sep 7
ONT7:30 pmOntario
3h 47m
1 stop
SAN11:17 pmSan Diego
Sep 10
SAN8:00 amSan Diego
13h 56m
1 stop
ONT9:56 pmOntario

American Airlines flights from Ontario to San Diego

Our best American Airlines deals on Ontario to San Diego flight tickets
American Airlines
Aug 26
ONT4:54 pmOntario
26h 44m
1 stop
SAN7:38 pmSan Diego
Sep 2
SAN4:20 pmSan Diego
23h 45m
1 stop
ONT4:05 pmOntario
American Airlines
Aug 7
ONT12:22 pmOntario
9h 33m
1 stop
SAN9:55 pmSan Diego
Aug 9
SAN6:15 amSan Diego
10h 09m
1 stop
ONT4:24 pmOntario

See travel insights to San Diego from

How to get the cheapest flight ticket from Ontario to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Ontario to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $189. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $407. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $179. Flights in the afternoon are often more expensive with an average ticket price of $245.

When to book flights from Ontario to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to San Diego (ONT to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to San Diego

Best Price Found

$76

Fastest flight time

3h 29m

Direct flights

None

Airports in San Diego

1 airport
The best one-way flight to San Diego from Ontario in the past 72 hours is $76. The best round-trip flight deal from Ontario to San Diego found on momondo in the last 72 hours is $134.
The fastest flight from Ontario to San Diego takes 3h 29m
There are no direct flights from Ontario to San Diego. Popular non-direct route for this connection is Ontario Airport - San Diego Airport.
There is 1 airport near San Diego: San Diego (SAN)

  • How far is Ontario to San Diego by plane?

    A flight from Ontario to San Diego will travel around 97.3 mi. By plane, this route typically takes 3h 47m.

  • When did momondo last update prices for flights from Ontario Airport to San Diego Airport?

    Prices for flights from Ontario Airport to San Diego Airport are updated daily.

  • How old do you have to be to fly from Ontario Airport to San Diego Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon
Chula Vista
Julian
National City
La Mesa
Imperial Beach
San Ysidro
Poway
Borrego Springs
Lemon Grove
Alpine
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to San Diego with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to San Diego flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to San Diego?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from Ontario.

I’m not ready to book a flight from Ontario to San Diego right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to San Diego flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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1 adult
Sat 7/19
Sat 7/26

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