sfo-to-ont

 

The cheapest times to fly from SFO to ONT are

  • January 1st to March 4th
  • August 6th to November 18th
  • December 3rd to March 4th (except the weeks of December 17th and December 24th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SFO to ONT is early to mid September. Prices can be as high as $578 for Friday flights during late June, or as low as $154 for Tuesday flights around early to mid September.

 

When to Fly to Ontario

Flying from San Francisco, CA (SFO) to Ontario, CA (ONT) will usually cost between $154 to $417 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $162. Due to high demand the most expensive time to fly is late June, with an average price of $363. Planning your trip to low-cost times can easily save you $201 on economy flights and even more on first-class flights. Generally, any price below $233 can be considered a good price for a round-trip SFO to ONT flight.

See below for a graph of average weekly prices for the SFO to ONT route. All prices are for round-trip tickets in USD.

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SFO to ONT Flight Prices

Compared to other flights, the SFO to ONT flight is much cheaper than the average and costs much less than the average flight leaving from San Francisco. The average price per mile (for a direct flight) is $0.4, which is a bit above average.

 

Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $121 (39%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $192. Return trip prices are from the ONT to SFO flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

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Departure Day Prices

Return Trip Prices by Day

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Return Day Prices

 

Nonstop Flights and Layovers

Travelers looking to fly from SFO to ONT can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 38 minutes may be realistic.

 

Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from SFO to ONT while comparing.

Destination alternative #1: Los Angeles International Airport (LAX) in Los Angeles, CA

  • 47 miles (76 km) away from ONT
  • Usually 41.20% less expensive than ONT
  • Nonstop flights available

See SFO to LAX flights

Destination alternative #2: San Diego International Airport (SAN) in San Diego, CA

  • 94 miles (151 km) away from ONT
  • Usually 39.06% less expensive than ONT
  • Nonstop flights available

See SFO to SAN flights

Destination alternative #3: Long Beach Airport (LGB) in Long Beach, CA

  • 36 miles (58 km) away from ONT
  • Usually 16.74% less expensive than ONT
  • Nonstop flights available

See SFO to LGB flights

Destination alternative #4: John Wayne-Orange County Airport (SNA) in Santa Ana, CA

  • 30 miles (48 km) away from ONT
  • Usually 10.73% less expensive than ONT
  • Nonstop flights available

See SFO to SNA flights

Destination alternative #5: Bob Hope Airport (BUR) in Burbank, CA

  • 44 miles (71 km) away from ONT
  • Usually 1.72% less expensive than ONT
  • Nonstop flights available

See SFO to BUR flights

 

Flight Questions Answered

Still have questions about flying from SFO to ONT? We’ve got answers.

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Alaska, American, Delta, Frontier, Southwest, United, and potentially more during busy seasons.

How far away is it from Ontario International Airport to San Francisco International Airport?

The distance between the two airports is roughly 363 miles or 584 kilometers.

How long does it take to fly from SFO to ONT?

The real-world flight time for a nonstop SFO to ONT flight is about 1 hour 38 minutes.

How many flights go between San Francisco, CA and Ontario, CA?

It depends on the day of the week and the date, but a typical day might have around 63 available flights from SFO to ONT.

 

Airport Location Info

 

Departing Airport

Origination code SFO
Origination airport name San Francisco International Airport
City San Francisco, CA
Country the United States
Latitude 37.6
Longitude -122.4

Return Airport

Destination code ONT
Destination airport name Ontario International Airport
City Ontario, CA
Country the United States
Latitude 34.1
Longitude -117.6

 

Late and Early Flight Data

Flights from SFO to ONT tend to depart late far less frequently than the average flight. According to our recently updated data, 23% of flights departed 5 or more minutes late, and 28% of flights left 5 or more minutes early. On average you can expect to leave ONT heading for SFO about 10 minutes late. This does significantly impact arrival time, as the average landing time in Ontario, CA is about 3 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • Southwest: 2 minutes late
  • SkyWest: 11 minutes late
  • United: 29 minutes late
  • Some airlines not reporting

 

Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.