Cheap Flights from Sacramento to Ontario International

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Travellers and cabin class, 1 Adult, Economy

Compare Sacramento to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals Cheapest month Find the best route Route info FAQs Tips and advice

Flight deals from Sacramento to Ontario International

Looking for a cheap last-minute deal or the best return flight from Sacramento to Ontario International Airport? If you want to travel next month, return fares start from $302. Find the lowest prices on one-way and return tickets right here.

Ontario.$302 per passenger.Departing Tue, 20 Oct, returning Tue, 27 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Sacramento International on Tue, 20 Oct, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 27 Oct, arriving in Sacramento International.Price includes taxes and charges.From $302, select.

Ontario.$305 per passenger.Departing Tue, 3 Nov, returning Tue, 10 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Sacramento International on Tue, 3 Nov, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 10 Nov, arriving in Sacramento International.Price includes taxes and charges.From $305, select.

Ontario.$323 per passenger.Departing Thu, 22 Oct, returning Tue, 10 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Sacramento International on Thu, 22 Oct, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 10 Nov, arriving in Sacramento International.Price includes taxes and charges.From $323, select.

Ontario.$330 per passenger.Departing Tue, 17 Nov, returning Wed, 18 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Tue, 17 Nov, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Wed, 18 Nov, arriving in Sacramento International.Price includes taxes and charges.From $330, select.

Ontario.$331 per passenger.Departing Wed, 18 Nov, returning Tue, 1 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Wed, 18 Nov, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Tue, 1 Dec, arriving in Sacramento International.Price includes taxes and charges.From $331, select.

Ontario.$345 per passenger.Departing Wed, 7 Oct, returning Wed, 14 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Wed, 7 Oct, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Wed, 14 Oct, arriving in Sacramento International.Price includes taxes and charges.From $345, select.

Ontario.$345 per passenger.Departing Sat, 31 Oct, returning Sat, 7 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Sat, 31 Oct, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Sat, 7 Nov, arriving in Sacramento International.Price includes taxes and charges.From $345, select.

Ontario.$377 per passenger.Departing Tue, 26 Jan, returning Thu, 28 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Tue, 26 Jan, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Thu, 28 Jan, arriving in Sacramento International.Price includes taxes and charges.From $377, select.

Ontario.$381 per passenger.Departing Thu, 3 Dec, returning Tue, 8 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Thu, 3 Dec, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Tue, 8 Dec, arriving in Sacramento International.Price includes taxes and charges.From $381, select.

Ontario.$406 per passenger.Departing Tue, 10 Nov, returning Sat, 16 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Tue, 10 Nov, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Sat, 16 Jan, arriving in Sacramento International.Price includes taxes and charges.From $406, select.

Ontario.$433 per passenger.Departing Wed, 30 Dec, returning Thu, 14 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Wed, 30 Dec, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Thu, 14 Jan, arriving in Sacramento International.Price includes taxes and charges.From $433, select.

Ontario.$449 per passenger.Departing Fri, 29 Jan, returning Mon, 1 Feb.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Fri, 29 Jan, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Mon, 1 Feb, arriving in Sacramento International.Price includes taxes and charges.From $449, select.

Ontario.$451 per passenger.Departing Fri, 26 Feb, returning Mon, 1 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Sacramento International on Fri, 26 Feb, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 1 Mar, arriving in Sacramento International.Price includes taxes and charges.From $451, select.

Ontario.$453 per passenger.Departing Fri, 26 Feb, returning Mon, 1 Mar.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Fri, 26 Feb, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Mon, 1 Mar, arriving in Sacramento International.Price includes taxes and charges.From $453, select.

Ontario.$454 per passenger.Departing Thu, 22 Oct, returning Fri, 11 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Thu, 22 Oct, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Fri, 11 Dec, arriving in Sacramento International.Price includes taxes and charges.From $454, select.

Ontario.$514 per passenger.Departing Thu, 18 Feb, returning Sun, 21 Feb.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Sacramento International on Thu, 18 Feb, arriving in Ontario International.Inbound direct flight with Southwest Airlines departs from Ontario International on Sun, 21 Feb, arriving in Sacramento International.Price includes taxes and charges.From $514, select.

Find the cheapest month to fly from Sacramento to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Sacramento to Ontario International flights are currently cheapest in October.

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Direct flights from Sacramento to Ontario International

Sacramento to Ontario International: Alternative routes

Compare routes from Sacramento to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Sacramento to Ontario: Flight information

The things to know before you go.

Cheapest flight found	$302
Cheapest month to fly	October
Average flight time	1 hr, 23 mins
Most popular airline	Southwest Airlines
Average flights per week	44

Finding cheap flights from Sacramento to Ontario International: Frequently asked questions

How much are return flights from Sacramento to Ontario International?

The best price we found for a return flight from Sacramento to Ontario International is $302. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Sacramento to Ontario International?

1 hour and 23 minutes is the average flight time from Sacramento to Ontario International.

Which airlines fly direct from Sacramento to Ontario International?

Southwest Airlines, Frontier Airlines and Volaris fly direct from Sacramento to Ontario International.

How many flights are there a week from Sacramento to Ontario International?

As of September 2026, there are 44 flights per week flying from Sacramento to Ontario International.

When is the cheapest time to fly from Sacramento to Ontario International?

The cheapest month to fly from Sacramento to Ontario International is usually October.

Which upcoming date is cheapest to fly from Sacramento to Ontario International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Sacramento to Ontario International Airport on Tuesday, 20 October 2026.

Can I get a direct flight from Sacramento to Ontario International Airport?

Yes – the average flight time is 1 hour and 23 minutes.

How can I find the best flight deal to Ontario International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Ontario?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Travelling from Sacramento to Ontario International Airport (ONT): What you need to know

Start your adventure at Sacramento International Airport (SMF), the main airport in Sacramento. Search for flights from Sacramento to Ontario International Airport (ONT) that jet out of this base.
Book a direct Sacramento to Ontario International Airport flight and you'll be in the air for an average of 1 hour 20 minutes.
Sacramento and Ontario (where Ontario International Airport is located) share the UTC-8 timezone. That means you won't have to adjust your watch on arrival.
With 30 direct weekly flights between the two airports, Sacramento International Airport (SMF) to Ontario International Airport (ONT) is the most popular route. Southwest Airlines operates the earliest flight at 5:30am. If you'd like to get more out of your day before flying, the last flight from SMF to ONT is with Southwest Airlines at 9:55pm.
Arrive at the airport on time so you don't miss your flight from Sacramento to ONT. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.
With more travellers during peak months like July, get to the terminal earlier than usual. Two hours for domestic flights and as much as four for international journeys will allow for extra wait times. Remember things also get busy during major holidays like Christmas and local events or festivals.

Airports in Sacramento

Sacramento International Airport (SMF)

Fly without interruptions from Sacramento International Airport (SMF). Nonstop flights from Sacramento to Ontario International Airport (ONT) can be booked from here.
When leaving from SMF, you can catch a direct flight from Sacramento to Ontario International Airport with Southwest Airlines.
The majority of passengers choose to fly with Southwest Airlines between SMF and ONT.
With a reliable 86.2% of services arriving as scheduled, Southwest Airlines is the most punctual carrier on this route.
SMF is about 19 kilometres from central Sacramento. If you're driving, catching a taxi or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the travel time to be around 50 minutes.
Looking for a convenient place to stay before your flight from Sacramento to Ontario International Airport? Consider Holiday Inn Express & Suites Sacramento Airport Natomas by IHG. Get some shut-eye here before heading to Sacramento International Airport.
81% of flights leaving Sacramento International Airport reach their destination according to schedule. Given its impressive on-time stats, you're unlikely to face delays when setting off from SMF.
SMF is located at 6900 Airport Boulevard.

Stockton Metropolitan Airport (SCK)

Using public transport, you can travel from central Sacramento to SCK in about 1 hour 30 minutes. The terminal is roughly 72 kilometres away, and making the journey by car will take approximately 55 minutes.
Start your holiday early by booking a night near Stockton Metropolitan Airport before your Sacramento to ONT flight. Top stays include Holiday Inn Express Stockton Southeast by IHG and Hampton Inn by Hilton Stockton.
Stockton Metropolitan Airport has an on-time performance of 59%. This figure shows how often flights that leave from this airport reach their destination on time.
SCK is located at 5000 South Airport Way, Room 202.

About Ontario International Airport (ONT)

Reserve a hotel close to ONT if you have a late flight from Sacramento to Ontario International Airport. Settle into one of these options and end the night sooner:
Lock in the best deal by booking your vehicle around three weeks before your Sacramento to Ontario International Airport flight.
You'll find ONT at 2900 E. Airport Drive.

Getting from Ontario International Airport (ONT) to central Ontario

Ontario International Airport is around 10 kilometres from central Ontario. It takes around 15 minutes or so to get to the city by car.
It'll take around 45 minutes if you're travelling by public transport.

How to find the cheapest flights from Sacramento to Ontario International Airport (ONT)

At the moment, $139 is the best price we've found for a one-way ticket from Sacramento to Ontario International Airport. The cheapest price for a return flight is $302. Remember fares can change due to availability at the time of booking.
Book four months before you want to travel. Research into pricing trends suggests this is the ideal window for finding cheap flights from Sacramento to ONT.
Plan your trip for September. That's the best month for scoring an incredible deal on Sacramento to Ontario International Airport tickets. If you're flexible with your travel dates, use the 'Whole month' tool to find the cheapest price across every month.
Save time searching for cheap plane tickets from Sacramento to ONT by creating a Price Alert. We'll send you an email or push notification on the app when a new discounted fare appears.
Filters make it easier to find a bargain for your flight from Sacramento to Ontario International Airport. Choose the flight times, carriers and stops that match your plans. Then sort the results by 'Cheapest' to zero in on the cheapest fare fast.

The best time to fly from Sacramento to Ontario International Airport (ONT)

December is the quietest month for flights from Sacramento to Ontario International Airport (ONT), while July is the most popular. Work out the ideal time to go to Ontario based on whether you prefer a bustling atmosphere or a more laid-back vibe.
Book a Sacramento to ONT plane ticket departing in August if you're eager to experience the city during its warmest month. Expect temperatures in Ontario to range from 16ºC to 36ºC.
If you'd rather travel in cooler conditions, look for a cheap ticket from Sacramento to Ontario International Airport in February when temperatures are between 4ºC and 24ºC.

More about Ontario

Once you've booked your flight from Sacramento to Ontario International Airport, find a hotel that puts you in a great location. Make one of these options your base for exploring Ontario:
You can't leave Ontario without touring its leading sights. Graber Olive House should be one of the first things on your must-do list.

Explore more of the United States

You've done Ontario, now it's time to discover other parts of the United States. Travel about 153 kilometres south to San Diego to tick off its leading sights. From San Diego Zoo to San Diego Balboa Park and USS Midway Museum, there's plenty to keep you on the go.
Around 193 kilometres northwest of Ontario, Bakersfield is another favourite stop in the United States. Experience this destination's highlights firsthand at Kern County Museum, Rabobank Arena, Theatre & Convention Centre and Bakersfield Museum of Art.