United Airlines Ontario to San Francisco Flights

Cheapflightsplus.com will find cheap United Airlines flights from Ontario to San Francisco. Compare airline ticket prices and book air tickets starting from $155 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare Ontario (CA) — San Francisco (CA) by United Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in january: one-way - $155, two-way – $266.
Direct flights
  • Check to choose departure date Check to choose departure date
Check prices for return flight
Find flights
Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
1:45 pm — 9:36 am
+1 day
1:45 pm — 5:04 pm UA2278 United Airlines
Ontario — Denver
14h 41m stop
7:45 am — 9:36 am UA2391 United Airlines
Denver — San Francisco
19h 51m
including layover
Find flight
from$242
1:45 pm — 7:50 am
+1 day
1:45 pm — 5:04 pm UA2278 United Airlines
Ontario — Denver
12h 56m stop
6:00 am — 7:50 am UA573 United Airlines
Denver — San Francisco
18h 5m
including layover
Find flight
from$242
1:45 pm — 10:56 pm
1:45 pm — 5:04 pm UA2278 United Airlines
Ontario — Denver
4h 1m stop
9:05 pm — 10:56 pm UA2190 United Airlines
Denver — San Francisco
9h 11m
including layover
Find flight
from$242
1:45 pm — 8:00 am
+1 day
1:45 pm — 5:04 pm UA2278 United Airlines
Ontario — Denver
2h 1m stop
7:05 pm — 9:00 pm UA498 United Airlines
Denver — Portland
9h 3m stop
6:03 am — 8:00 am UA1164 United Airlines
Portland — San Francisco
18h 15m
including layover
Find flight
from$359
3:30 pm — 5:14 pm
3:30 pm — 5:14 pm UA5660 United Airlines
Ontario — San Francisco
1h 44m
Find flight
from$155
5:10 am — 5:50 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
7h 30m stop
3:59 pm — 5:50 pm UA1300 United Airlines
Denver — San Francisco
12h 40m
including layover
Find flight
from$242
5:10 am — 7:11 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
8h 51m stop
5:20 pm — 7:11 pm UA1076 United Airlines
Denver — San Francisco
14h 1m
including layover
Find flight
from$242
5:10 am — 3:25 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
5h 5m stop
1:34 pm — 3:25 pm UA304 United Airlines
Denver — San Francisco
10h 15m
including layover
Find flight
from$242
5:10 am — 10:56 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
12h 36m stop
9:05 pm — 10:56 pm UA2190 United Airlines
Denver — San Francisco
17h 46m
including layover
Find flight
from$242
5:10 am — 9:40 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
5h 29m stop
1:58 pm — 3:04 pm UA1424 United Airlines
Denver — Las Vegas
4h 51m stop
7:55 pm — 9:40 pm UA2416 United Airlines
Las Vegas — San Francisco
16h 30m
including layover
Find flight
from$302
5:10 am — 9:09 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
10h 51m stop
7:20 pm — 9:09 pm UA281 United Airlines
Denver — San Francisco
15h 59m
including layover
Find flight
from$313
5:10 am — 9:50 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
4h 56m stop
1:25 pm — 3:24 pm UA2057 United Airlines
Denver — Phoenix
5h 15m stop
8:39 pm — 9:50 pm UA1603 United Airlines
Phoenix — San Francisco
16h 40m
including layover
Find flight
from$314
5:10 am — 9:30 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
4h 59m stop
1:28 pm — 2:57 pm UA1302 United Airlines
Denver — San Diego
4h 48m stop
7:45 pm — 9:30 pm UA505 United Airlines
San Diego — San Francisco
16h 20m
including layover
Find flight
from$328
5:10 am — 9:26 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
3h 26m stop
11:55 am — 1:50 pm UA644 United Airlines
Denver — Portland
5h 40m stop
7:30 pm — 9:26 pm UA1337 United Airlines
Portland — San Francisco
16h 16m
including layover
Find flight
from$349
5:10 am — 8:14 pm
5:10 am — 8:29 am UA2317 United Airlines
Ontario — Denver
2h 46m stop
11:15 am — 1:23 pm UA236 United Airlines
Denver — Boise
5h 52m stop
7:15 pm — 8:14 pm UA2013 United Airlines
Boise — San Francisco
15h 4m
including layover
Find flight
from$386
7:15 pm — 8:44 pm
7:15 pm — 8:44 pm UA1757 United Airlines
Ontario — San Francisco
1h 29m
Find flight
from$155
*Departure and arrival times are local. Last updated on 01/15/2025

Flight Information

There are 2 flights by United Airlines from Ontario to San Francisco every week with departures from Ontario Int. and International Heliport. All flights arrive at San Francisco, Embarkadero, China Basin Heliport.

Departures start from 1:45 pm to 7:15 pm. Nonstop flight is 1h 29m. The time difference between Ontario and San Francisco is 0h.

  • The fastest flight 1h 29m
  • Average flight time 1h 37m
  • The earliest flight 1:45 pm
  • The latest flight 7:15 pm
  • Distance 364 ml

The cheapest months for traveling to San Francisco are february (from 155 $), january (from 242 $).

The cheapest flight by United Airlines that our users were able to find is $155. This airfare is economy class on one-way UA5660 flight for February 21, 2025 leaving Ontario Int. in Ontario at 3:30 pm, it includes all taxes and additional fees.

Find same flight?

Other Popular Airlines on the Route

Besides United Airlines there are other 3 airline carriers between Ontario and San Francisco. Please review schedules and prices from the most popular airlines to find the best airfare deals from Ontario to San Francisco.

Nonstop flights

There are 3 direct flights every day from Ontario. Airlines and fares are below:

See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

See more connecting flights

How to book an air ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected airfare.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

Back