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Cheap flights from Santa Rosa to Los Angeles from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santa Rosa to Los Angeles departing on 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Santa Rosa to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
3:40 pm - 5:08 pm
STS
-
ONT
1h 28mnonstop
Alaska Airlines Logo
6:31 pm - 8:07 pm
ONT
-
STS
1h 36mnonstop
$152Alaska Airlines
Tue, Oct 27 - Tue, Nov 3
Alaska Airlines Logo
2:09 pm - 3:47 pm
STS
-
ONT
1h 38mnonstop
Alaska Airlines Logo
4:27 pm - 6:07 pm
ONT
-
STS
1h 40mnonstop
$157Alaska Airlines
Tue, Sep 1 - Wed, Sep 9
Alaska Airlines Logo
3:40 pm - 5:08 pm
STS
-
ONT
1h 28mnonstop
Alaska Airlines Logo
6:31 pm - 8:07 pm
ONT
-
STS
1h 36mnonstop
$161Alaska Airlines
Tue, Oct 27 - Tue, Nov 3
Alaska Airlines Logo
3:40 pm - 5:08 pm
STS
-
ONT
1h 28mnonstop
Alaska Airlines Logo
6:31 pm - 8:07 pm
ONT
-
STS
1h 36mnonstop
$162Alaska Airlines
Tue, Oct 27 - Wed, Nov 4
Alaska Airlines Logo
2:09 pm - 3:47 pm
STS
-
ONT
1h 38mnonstop
Alaska Airlines Logo
4:27 pm - 6:07 pm
ONT
-
STS
1h 40mnonstop
$167Alaska Airlines
Thu, Sep 3 - Wed, Sep 9
Alaska Airlines Logo
2:09 pm - 3:47 pm
STS
-
ONT
1h 38mnonstop
Alaska Airlines Logo
4:27 pm - 6:07 pm
ONT
-
STS
1h 40mnonstop
$177Alaska Airlines
Fri, Sep 4 - Mon, Sep 7
Alaska Airlines Logo
2:09 pm - 3:47 pm
STS
-
ONT
1h 38mnonstop
Alaska Airlines Logo
4:27 pm - 6:07 pm
ONT
-
STS
1h 40mnonstop
$182Alaska Airlines
Thu, Aug 20 - Sun, Aug 23
Delta Logo
11:25 am - 4:12 pm
STS
-
ONT
4h 47m
1 stop
Delta Logo
6:00 am - 10:39 am
ONT
-
STS
4h 39m
1 stop
$187Delta
Sat, Oct 31 - Sun, Nov 1
Alaska Airlines Logo
3:40 pm - 5:08 pm
STS
-
ONT
1h 28mnonstop
Alaska Airlines Logo
5:48 pm - 7:19 pm
ONT
-
STS
1h 31mnonstop
$189Alaska Airlines
Sat, Oct 3 - Thu, Oct 8
Alaska Airlines Logo
4:35 pm - 6:03 pm
STS
-
ONT
1h 28mnonstop
Alaska Airlines Logo
4:32 pm - 6:12 pm
ONT
-
STS
1h 40mnonstop
$192Alaska Airlines
Fri, Aug 14 - Sat, Aug 22

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Delta flights from Santa Rosa to Ontario

Our best Delta deals on Santa Rosa to Ontario flight tickets
Delta
Oct 16
STS4:55 pmSanta Rosa Sonoma County
6h 53m
1 stop
ONT11:48 pmOntario
Oct 20
ONT6:00 amOntario
4h 39m
1 stop
STS10:39 amSanta Rosa Sonoma County
$187
Delta
Oct 30
STS11:25 amSanta Rosa Sonoma County
4h 47m
1 stop
ONT4:12 pmOntario
Nov 1
ONT6:00 amOntario
4h 39m
1 stop
STS10:39 amSanta Rosa Sonoma County
$197
Delta
Oct 10
STS11:25 amSanta Rosa Sonoma County
4h 47m
1 stop
ONT4:12 pmOntario
Oct 12
ONT6:00 amOntario
4h 39m
1 stop
STS10:39 amSanta Rosa Sonoma County
$212

Alaska Airlines flights from Santa Rosa to Ontario

Our best Alaska Airlines deals on Santa Rosa to Ontario flight tickets
Alaska Airlines
Oct 27
STS3:40 pmSanta Rosa Sonoma County
1h 28m
ONT5:08 pmOntario
Nov 3
ONT6:31 pmOntario
1h 36m
STS8:07 pmSanta Rosa Sonoma County
$152
Alaska Airlines
Sep 1
STS2:09 pmSanta Rosa Sonoma County
1h 38m
ONT3:47 pmOntario
Sep 5
ONT4:32 pmOntario
1h 40m
STS6:12 pmSanta Rosa Sonoma County
$157
Alaska Airlines
Oct 27
STS3:40 pmSanta Rosa Sonoma County
1h 28m
ONT5:08 pmOntario
Nov 3
ONT6:31 pmOntario
1h 36m
STS8:07 pmSanta Rosa Sonoma County
$161

momondo Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 21, 2026.
Use the filters below to find and compare flights from Santa Rosa to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Tue 10/27

3:40 pm-5:08 pm

Nonstop1h 28m

Ontario

Tue 11/3

6:31 pm-8:07 pm

Nonstop1h 36m

$152

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Tue 9/1

2:09 pm-3:47 pm

Nonstop1h 38m

Ontario

Wed 9/9

4:27 pm-6:07 pm

Nonstop1h 40m

$157

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Tue 10/27

3:40 pm-5:08 pm

Nonstop1h 28m

Ontario

Tue 11/3

6:31 pm-8:07 pm

Nonstop1h 36m

$161

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Tue 10/27

3:40 pm-5:08 pm

Nonstop1h 28m

Ontario

Wed 11/4

6:31 pm-8:07 pm

Nonstop1h 36m

$162

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Thu 9/3

2:09 pm-3:47 pm

Nonstop1h 38m

Ontario

Wed 9/9

4:27 pm-6:07 pm

Nonstop1h 40m

$167

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Fri 9/4

2:09 pm-3:47 pm

Nonstop1h 38m

Ontario

Mon 9/7

4:27 pm-6:07 pm

Nonstop1h 40m

$177

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Thu 8/20

2:09 pm-3:47 pm

Nonstop1h 38m

Ontario

Sun 8/23

4:27 pm-6:07 pm

Nonstop1h 40m

$182

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Sat 10/31

11:25 am-4:12 pm

1 stop4h 47m

Ontario

Sun 11/1

6:00 am-10:39 am

1 stop4h 39m

$187
Quickest round-trip

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Sat 10/3

3:40 pm-5:08 pm

Nonstop1h 28m

Ontario

Thu 10/8

5:48 pm-7:19 pm

Nonstop1h 31m

$189

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Fri 8/14

4:35 pm-6:03 pm

Nonstop1h 28m

Ontario

Sat 8/22

4:32 pm-6:12 pm

Nonstop1h 40m

$192

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Santa Rosa to Ontario

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 typical price of a round-trip flight between Santa Rosa and Ontario?

What is the cheapest month to fly to Ontario?

In general, April is the cheapest month to fly from Santa Rosa to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $197. If you aren’t able to travel during the month of April, then book flights to Ontario from Santa Rosa during July instead. Flights to Ontario in July, while not as cheap as those in April, still average around $227.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Monday when prices can be found for as low as $161. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Santa Rosa to Ontario for around $242.

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

In the evening is the cheapest time of day to fly from Santa Rosa to Ontario when you can find flight prices for as low as $156. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $263 on average. Flights to Ontario from Santa Rosa in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Santa Rosa Sonoma County to Ontario flight route?

Fly from Santa Rosa Sonoma County to Ontario for the best Santa Rosa Sonoma County - Ontario flight prices

What cabin class options are available on Santa Rosa to Ontario flights?

There is only 1 cabin class available to choose from on Santa Rosa to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Santa Rosa to Ontario flights?

No. A direct flight is the cheapest option for a flight between Santa Rosa to Ontario.

When to book flights from Santa Rosa to Ontario

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

Cheap Santa Rosa to Ontario (STS to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to Ontario

Best Price Found

$138

Fastest flight time

1h 27m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Santa Rosa in the past 72 hours is $138. The best round-trip flight deal from Santa Rosa to Ontario found on momondo in the last 72 hours is $227.
The fastest flight from Santa Rosa to Ontario takes 1h 27m
Direct flights go from Santa Rosa to Ontario every day.
There is 1 airport in Ontario. From Santa Rosa there are direct flights to Ontario (ONT).
Search flight deals

Frequently asked questions about flying from Santa Rosa to Ontario

  • How far is Santa Rosa Sonoma County to Ontario by plane?

    The straight-line distance from Santa Rosa Sonoma County to Ontario is 413.2 mi. In terms of flight time, this usually takes a little over 1h 27m.

  • When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Ontario Airport?

    Prices for flights from Santa Rosa Sonoma County Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Santa Rosa Sonoma County Airport to Ontario Airport?

  • How old do you have to be to fly from Santa Rosa Sonoma County Airport to Ontario 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 Santa Rosa Sonoma County Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Santa Rosa to Ontario?

  • What is the most popular airline from Santa Rosa to Ontario?

Best airlines flying from Santa Rosa to Ontario

Compare and see reviews for airlines that fly from Santa Rosa to Ontario with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $117Free CancellationRating
7.9
12,553 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $236Free CancellationRating
7.1
11,724 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Santa Rosa to Ontario

    Alaska Airlines flies from Santa Rosa to Ontario around 6 times per week, with 12,553 momondo users rating the airline 7.9/10. The cheapest Alaska Airlines deal from Santa Rosa to Ontario in the last 72 hours was $117 (round-trip), much lower than the average airfare cost of $230 for Alaska Airlines flights on this route.

Why use momondo?

Why should I use momondo to find a flight deal from Santa Rosa to Ontario?

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

Can I find flights from Santa Rosa to Ontario with flexible booking policies on momondo?

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

How can momondo help me find flights from Santa Rosa to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Santa Rosa to Ontario.

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

Yes. momondo can track prices for Santa Rosa to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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