Cheap flights from Santa Rosa to Ontario (STS - ONT)

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How to find the cheapest flight from
Santa Rosa (STS) to Ontario (ONT)

All the information you need to plan the best STS to ONT flight in 2021: compare Santa Rosa to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
What is the cheapest day to fly round-trip from Santa Rosa to Ontario?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 156%.

When is the cheapest time to fly from Santa Rosa to Ontario (STS - ONT)?

When flying from Santa Rosa to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest month to fly from Santa Rosa to Ontario?

The best pricing can be found in the month of July. Prices to Ontario from Santa Rosa average $142. You can even find prices in July for less than $142, as users have found deals to Ontario from as low as $96. The month of November appears to be one of the more expensive times to travel to Ontario from Santa Rosa. Flying in the targeted month can save you up to 10%.

How far in advance should I book a flight from Santa Rosa to Ontario?

To save up to 106% on this flight, we recommend booking at least 31 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Santa Rosa to Ontario from $180 1-2 weeks out and tickets from $272 for flights departing within the next 72 hours.

Cheap flights from Santa Rosa to Ontario in December, January 2022

The best prices found for STS to ONT flights for December, January
16 Dec - 24 Dec
$289pp
STS
Santa Rosa Sonoma County
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
14 Dec - 15 Dec
$315pp
STS
Santa Rosa Sonoma County
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
18 Dec - 21 Dec
$335pp
STS
Santa Rosa Sonoma County
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
STS
Santa Rosa Sonoma County

Santa Rosa Sonoma County to Ontario 2022 flight deals

Cheap flights to Ontario from Santa Rosa found for this year
16 Dec - 24 Dec
$289pp
STS
Santa Rosa Sonoma County
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
14 Dec - 15 Dec
$315pp
STS
Santa Rosa Sonoma County
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
18 Dec - 21 Dec
$335pp
STS
Santa Rosa Sonoma County
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
STS
Santa Rosa Sonoma County

Last minute flights from Santa Rosa to Ontario

Late deals on round-trip flights to Ontario from Santa Rosa, departing today and this week
10 Dec - 12 Dec
$343pp
STS
Santa Rosa Sonoma County
American Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
STS
Santa Rosa Sonoma County
10 Dec - 12 Dec
$347pp
STS
Santa Rosa Sonoma County
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
STS
Santa Rosa Sonoma County
10 Dec - 14 Dec
$383pp
STS
Santa Rosa Sonoma County
American Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
American Airlines
 
1 STOP
STS
Santa Rosa Sonoma County

One-way flights to Ontario from Santa Rosa

The cheapest one-way flights from Santa Rosa to Ontario
2:00 am - 5:15 am
Alaska Airlines
2 Stops
27h 15m
STS - ONT
Alaska Airlines
3:45 pm - 5:54 am
Multiple Airlines
2 Stops
38h 09m
STS - ONT
Multiple Airlines
$184
Kiwi.com
7:36 am - 5:08 am
American Airlines
2 Stops
21h 32m
STS - ONT
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Santa Rosa</span> to <span class="emphasized">Ontario</span> flights.

Flight FAQs

From Santa Rosa to Ontario

Which airlines flying from Santa Rosa Sonoma County to Ontario have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Santa Rosa Sonoma County to Ontario that may be offering flexible cancellation policies are United Airlines, American Airlines, and Alaska Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Santa Rosa to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Santa Rosa to Ontario for under $200. The cheapest flight booked recently is on Multiple Airlines for just $179, but on average you can expect to pay $244.

Are there last-minute flights available from Santa Rosa to Ontario for under $400?

There are currently 20+ open flights from Santa Rosa to Ontario within the next 7 days for less than $400.

What are the cheapest airlines to fly from Santa Rosa to Ontario one-way?

To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $132. American Airlines flights start at $158 while deals on United Airlines start at $170 one-way.

What are the cheapest flights from Santa Rosa to Ontario?

Looking at all options, your cheapest flight can be booked for $136. While the most popular route (Santa Rosa Sonoma County - Ontario) can be booked for $179 on average our data indicates $176 when flying from Santa Rosa to Ontario.

What are the most popular airlines that fly from Santa Rosa to Ontario?

When booking a flight from Santa Rosa to Ontario, you may want to consider flying on American Airlines, Alaska Airlines or United Airlines as they are the most popular for this route.

COVID Restrictions

View COVID Travel Restrictions for Ontario, CA

Do I need a COVID test to fly to Ontario from Santa Rosa?

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from Santa Rosa Sonoma County need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from Santa Rosa Sonoma County must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from Santa Rosa Sonoma County are not required to quarantine after entering Ontario.

Do I need a test to fly back to Santa Rosa from Ontario?

Returning to Santa Rosa Sonoma County from Ontario

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Santa Rosa Sonoma County.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Santa Rosa Sonoma County.

Hide COVID Travel Restrictions for Ontario, CA

Alternative routes for Santa Rosa to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Ontario

Things to know before you go - useful duration and weather info for your trip from Santa Rosa to Ontario.

Airports servicing Santa Rosa

Airports servicing Ontario

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