Flight tickets from San Jose International to Ontario International

Compare San Jose International 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 from San Jose International to Ontario International

Looking for a cheap last-minute deal or the best return flight from San Jose International Airport to Ontario International Airport? If you want to travel next month, return fares start from ₹ 12,931. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Jose International to Ontario International

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

Direct flights from San Jose International to Ontario International

San Jose to Ontario: Flight information

The things to know before you go.
Cheapest flight found₹ 6,462
Cheapest month to flyMay
Average flight time1 hr, 17 mins
Most popular airlineSouthwest Airlines
Average flights per week29

Finding cheap flights from San Jose International to Ontario International: Frequently asked questions

The best price we found for a return flight from San Jose International to Ontario International is ₹ 12,923. 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.
1 hour and 17 minutes is the average flight time from San Jose International to Ontario International.
Southwest Airlines flies direct from San Jose International to Ontario International.
As of April 2026, there are 29 flights per week flying from San Jose International to Ontario International.
The cheapest month to fly from San Jose International to Ontario International is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Jose International Airport to Ontario International Airport on Wednesday, 3 June 2026.
Yes – the average flight time is 1 hour and 17 minutes.
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.
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.
Currently, Southwest Airlines offers the cheapest flight tickets to Ontario International.

Flying from Norman Y. Mineta San Jose International Airport (SJC) to Ontario International Airport (ONT): what you need to know

  • Take a direct flight from Norman Y. Mineta San Jose International Airport to Ontario International Airport and you'll be travelling for an average of 1 hour 15 minutes.

  • San Jose and Ontario share the same timezone, UTC-7.

  • Flights from SJC to ONT start at 06:30 — the first with Southwest Airlines. The last service of the day is at 21:50 with Southwest Airlines. In total, there are 19 weekly Norman Y. Mineta San Jose International Airport to Ontario International Airport flights.

  • To ensure you get on your SJC to ONT flight, leave plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • Be prepared for longer lines in popular months such as August. Arriving up to four hours ahead of an international flight and two hours for a domestic departure is a wise move.

  • Travelling to Ontario (and then seeing more of United States!) is easy with Southwest Airlines. This popular airline offers direct flights from Norman Y. Mineta San Jose International Airport to Ontario International Airport.

  • The majority of travellers choose to fly with Southwest Airlines on this route.

  • Southwest Airlines ranks as the leading on-time carrier for SJC to ONT flights, with 86.92% of services reaching their destination on schedule.

  • If you'd like to explore another city along the way, simply deselect 'Direct flights only' when searching for your ticket from Norman Y. Mineta San Jose International Airport to Ontario International Airport. These are the top stopovers between SJC and ONT:

    • Harry Reid Airport (formerly McCarran Airport)

    • Phoenix Sky Harbour International Airport

    • Portland International Airport

How to find the cheapest flights from Norman Y. Mineta San Jose International Airport (SJC) to Ontario International Airport (ONT)

  • ₹ 6,462 is currently the best price for a one-way Norman Y. Mineta San Jose International Airport to Ontario International Airport flight. Return flights start from ₹ 12,923. These prices may change based on demand and availability.

  • Get cheap tickets from SJC to ONT by booking seven months ahead. Based on our research, that's the sweet spot for landing a bargain.

  • Plan your trip for June. That's the cheapest month for flights from Norman Y. Mineta San Jose International Airport to Ontario International Airport. If your travel dates are flexible, use the 'Whole month' tool to find the cheapest airfare across each month.

  • You don't need to check every day to see if fares have gone down when you create a Price Alert. We'll notify you as soon as there's a change in price on cheap flights from SJC to ONT.

  • Choose your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Norman Y. Mineta San Jose International Airport to Ontario International Airport.

Handy information about Norman Y. Mineta San Jose International Airport (SJC)

  • You'll find SJC at 1701 Airport Boulevard, Suite B-1130.

  • Norman Y. Mineta San Jose International Airport gets top marks for on-time performance. 84.69% of flights that take off from SJC reach their destination on time.

  • Central San Jose to Norman Y. Mineta San Jose International Airport is around 6 kilometres. Depending on traffic, it'll take you about 10 minutes to get there if you're catching a cab, ride-sharing or driving.

  • The trip on public transport typically takes 45 minutes.

  • Looking for a convenient hotel close to SJC? If you've booked an early flight from Norman Y. Mineta San Jose International Airport to Ontario International Airport, these stays will have you sleeping moments from your departure lounge:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • ONT is located at 2900 E. Airport Drive.

  • From Ontario International Airport, Ontario is approximately 6 kilometres away. It takes around 10 minutes to drive to the centre.

  • If you're travelling on public transport, expect a journey of around 1 hour 30 minutes.

When to fly to Ontario International Airport (ONT)

  • It's time to plan your travel dates for your flight from Norman Y. Mineta San Jose International Airport to Ontario International Airport. August is the most popular month to head to Ontario. If you prefer a quieter vibe, go in May.

  • When reserving your flight from Norman Y. Mineta San Jose International Airport to Ontario International Airport, think about the type of weather you like. August is the warmest month in Ontario, with the temperature ranging from 15ºC to 35ºC.

  • Look for cheap tickets from SJC to ONT in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 4ºC and 23ºC on average.

Explore more of United States

  • Ontario is easy to fall in love with, but there are so many other parts of United States you'll want to see. About 56 kilometres west of Ontario, a trip to Los Angeles will keep you busy. Start with attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • If you're eager to discover another well-known destination in United States, head for San Diego, roughly 153 kilometres south of Ontario. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.