Cheap flights from San Francisco to Ontario from £25
Trusted by millions
Kiwi.com Guarantee for stress-free travel
One search, all the best deals
Explore flight deals to Ontario
Prices updated:
Not happy with the results? Try some of our useful filters
Prices updated:
Not happy with the results? Try some of our useful filters
How much do flights to Ontario cost?
Cheapest one-way trip | £25 |
|---|---|
Cheapest round-trip | £48 |
Average round-trip | £105 |
Nonstop flights in April | £25 – £221 |
Most popular airline | United Airlines |
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 21.04 | Tue 22.04 | Wed 23.04 | Thu 24.04 | Fri 25.04 | Sat 26.04 | Sun 27.04 |
|---|---|---|---|---|---|---|---|
| --- | --- | 5 | 5 | 5 | 3 | 4 | |
| --- | --- | --- | 1 | 1 | 1 | 1 | |
| Weekly flights: 26 total | Daily flights: 3.71 average | Most flights: Wednesday 5 flights |
| Airline | Mon 28.04 | Tue 29.04 | Wed 30.04 | Thu 01.05 | Fri 02.05 | Sat 03.05 | Sun 04.05 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 4 | 4 | 4 | 3 | 4 | |
| 1 | --- | --- | 1 | 1 | 1 | 1 | |
| Weekly flights: 33 total | Daily flights: 4.71 average | Most flights: Monday 5 flights |
| Airline | Mon 05.05 | Tue 06.05 | Wed 07.05 | Thu 08.05 | Fri 09.05 | Sat 10.05 | Sun 11.05 |
|---|---|---|---|---|---|---|---|
| 4 | 3 | 4 | 4 | 4 | 3 | 4 | |
| 1 | --- | --- | 1 | 1 | 1 | 1 | |
| Weekly flights: 31 total | Daily flights: 4.43 average | Most flights: Monday 4 flights |
| Airline | Mon 12.05 | Tue 13.05 | Wed 14.05 | Thu 15.05 | Fri 16.05 | Sat 17.05 | Sun 18.05 |
|---|---|---|---|---|---|---|---|
| 4 | 3 | 4 | 4 | 4 | 3 | 4 | |
| 1 | --- | --- | 1 | 1 | 1 | 1 | |
| Weekly flights: 31 total | Daily flights: 4.43 average | Most flights: Monday 4 flights |
Check-in for a flight from San Francisco to Ontario
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| United Airlines | UAL | UA | No |
| Frontier Airlines | FFT | F9 | No |
| American Airlines | AAL | AA | No |
| Alaska Airlines | ASA | AS | No |
| Hawaiian Airlines | HAL | HA | 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 | 19°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 | 32°C | 18°C |
| October | 27°C | 15°C |
| November | 22°C | 10°C |
| December | 17°C | 7°C |
14 day forecast
Ontario travel tips
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.
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!
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 A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from San Francisco
Flights to Ontario
Airports near San Francisco
Airports near Ontario
Get more out of Kiwi.com with our mobile application
Find out more about the Kiwi.com app on kiwi.com/mobile . With our app you can search for the best plane connections. The Kiwi.com mobile app offers cheap flights, access to hidden features, travel hacks and special offers.
Download boarding passes
One-click booking
Get exclusive offers and prices
Mobile trip notifications