Cheap flights from San Francisco to Ontario from £27
Trusted by millions
Kiwi.com Guarantee for stress-free travel
One search, all the best deals
Explore flight deals to Ontario
Not happy with the results? Try some of our useful filters
Search by stops
Search by carrier
Search by price
Search by departure date
Not happy with the results? Try some of our useful filters
Search by stops
Search by carrier
Search by price
Search by departure date
How much do flights to Ontario cost?
Key info about flying to Ontario
Weekly direct flights
Discover the top airlines offering direct flights from San Francisco to Ontario in the next month. You’ll find the number of daily direct flights per airline in the chart.
| Airline | Mon 05.10 | Tue 06.10 | Wed 07.10 | Thu 08.10 | Fri 09.10 | Sat 10.10 | Sun 11.10 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 4 | 5 | 5 | 4 | 5 | |
| 1 | --- | --- | 1 | 1 | --- | 1 | |
| Weekly flights: 36 total | Daily flights: 5.14 average | Most flights: Monday 5 flights |
| Airline | Mon 12.10 | Tue 13.10 | Wed 14.10 | Thu 15.10 | Fri 16.10 | Sat 17.10 | Sun 18.10 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 4 | 5 | 5 | 4 | 5 | |
| 1 | --- | --- | 1 | 1 | --- | 1 | |
| Weekly flights: 36 total | Daily flights: 5.14 average | Most flights: Monday 5 flights |
| Airline | Mon 19.10 | Tue 20.10 | Wed 21.10 | Thu 22.10 | Fri 23.10 | Sat 24.10 | Sun 25.10 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 4 | 5 | 5 | 4 | 4 | |
| 1 | --- | --- | 1 | 1 | --- | 1 | |
| Weekly flights: 35 total | Daily flights: 5 average | Most flights: Monday 5 flights |
| Airline | Mon 26.10 | Tue 27.10 | Wed 28.10 | Thu 29.10 | Fri 30.10 | Sat 31.10 | Sun 01.11 |
|---|---|---|---|---|---|---|---|
| 4 | 4 | 4 | 4 | 4 | 3 | 5 | |
| 1 | --- | --- | 1 | 1 | --- | 1 | |
| Weekly flights: 32 total | Daily flights: 4.57 average | Most flights: Sunday 5 flights |
Check-in for a flight from San Francisco to Ontario
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| Frontier Airlines | FFT | F9 | No |
| United Airlines | UAL | UA | No |
| Alaska Airlines | ASA | AS | No |
Online check-in is not available for these airlines.
Weather in Ontario
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 18°C | 7°C |
| February | 18°C | 7°C |
| March | 20°C | 8°C |
| April | 23°C | 10°C |
| May | 25°C | 12°C |
| June | 29°C | 16°C |
| July | 33°C | 19°C |
| August | 33°C | 20°C |
| September | 31°C | 18°C |
| October | 27°C | 14°C |
| November | 22°C | 10°C |
| December | 17°C | 7°C |
14 day forecast
Ontario travel tips
Sweets lovers of Ontario love My Delight Cupcakery
Try delicious sweets at My Delight Cupcakery at 1520 N Mountain Avenue in Ontario. All cupcakes are available in two options: mini for $2-3 and classic for $4-5. Make sure to try the Snickerdoodle (Madagascar vanilla cake); vegans will appreciate the Vegan Cookies n Cream.
Go karting at a modern venue in Ontario
Head to the K1 Speed in Ontario to experience karting both for beginners and professionals. You'll ride the track in a state-of-the-art kart in a modern venue, for a totally high-performance experience. Races start at just $20, a great value for money for such emotions!
Rent a car to get around Ontario
If you rent a car, you can see much more in Ontario. All beautiful nature places are located out of the city. You can rent a car at or around the airport, they do not have any extra charge for location. Note it is better to rent a big car (like a SUV) because of the hill areas.
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any origin and destination in the world by plane. Find the cheapest routes and best deals, as well as the best dates to travel.
Explore alternative trips
Flights from San Francisco
Flights to Ontario
Popular routes
Airports near San Francisco
Airports near Ontario
Download our app