Trip.com
>
Flights
>
Flights to United States
>
Flights to California
>
Flights to Ontario
Hotels in Ontario
>
Flights from San Francisco to Ontario

Cheap flight deals from San Francisco to Ontario

Non stop flight deals! Book direct flights from San Francisco to Ontario: One way flights from US$20, round trip flights from US$39. Cheapest next 3 months.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flying from San Francisco to Ontario

The distance between San Francisco and Ontario is about 582.01 km. The most popular month to Ontario is February. The off-season for travel is February.

Cheapest one-way flight price US$20
Cheapest round-trip ticket price US$39
Off-season for travel February
Peak season for travel February
Flight distance 582.01 km

When is the cheapest time to fly from San Francisco to Ontario?

The cheapest time for San Francisco to Ontario flights: Jul 13 to Jul 20 — one way flight prices from US$19.

Cheapest flights
From price
Search
  • 6 13
  • 13 20
  • 20 27

  • Aug

    27 3
  • 3 10
  • 10 17
  • 17 24
  • 24 31

  • Sep

    31 7
  • 7 14
  • 14 21
  • 21 28
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from San Francisco (SFO) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from San Francisco to Ontario based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from San Francisco (SFO) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around US$139.

How to find a cheap flight from San Francisco to Ontario

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from San Francisco to Ontario. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

More Travel Options