Cheap flights from Ontario to San Francisco from $38

Trusted by millions

Kiwi.com Guarantee for stress-free travel

One search, all the best deals

Explore flight deals to San Francisco

Direct
Fri, Oct 31
Ontario ONTSan Francisco SFO
$38
Search
Direct
Fri, Oct 31
Ontario ONTSan Francisco SFO
$38
Search
Direct
Wed, Oct 29
Ontario ONTSan Francisco SFO
$42
Search
Direct
Wed, Oct 29
Ontario ONTSan Francisco SFO
$42
Search
Direct
Wed, Oct 29
Ontario ONTSan Francisco SFO
$42
Search
Direct
Wed, Oct 29
Ontario ONTSan Francisco SFO
$42
Search

Prices updated:

Not happy with the results? Try some of our useful filters

Search by stops

Search by carrier

Search by price

Search by departure date

Direct
Fri, Oct 31 – Mon, Nov 3
Ontario ONTSan Francisco SFO
$72
Search
Direct
Fri, Oct 31 – Mon, Nov 3
Ontario ONTSan Francisco SFO
$72
Search
Direct
Thu, Oct 30 – Mon, Nov 3
Ontario ONTSan Francisco SFO
$92
Search
Direct
Thu, Oct 30 – Sun, Nov 2
Ontario ONTSan Francisco SFO
$127
Search
Direct
Tue, Oct 28 – Sat, Nov 1
Ontario ONTSan Francisco SFO
$143
Search
Direct
Tue, Oct 28 – Sat, Nov 1
Ontario ONTSan Francisco SFO
$143
Search

Prices updated:

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 San Francisco cost?

Cheapest one-way trip

$38

Cheapest nonstop round-trip

$71

Cheapest round-trip

$72

Average round-trip

$187

Nonstop flights in October

$38 – $445

Key info about flying to San Francisco

Depart from
Ontario International
Arrive to
San Francisco International
Average flights per week
54
Flight distance
586 km
Worth visiting
Golden Gate Bridge - Alcatraz - Big Sur

Weekly direct flights

Discover the top airlines offering direct flights from Ontario to San Francisco in the next month. You’ll find the number of daily direct flights per airline in the chart.

AirlineSun 28.09Mon 29.09Tue 30.09Wed 01.10Thu 02.10Fri 03.10Sat 04.10
United Airlines
4333333
Frontier Airlines
11------11---
Weekly flights: 26 totalDaily flights: 3.71 averageMost flights: Sunday 4 flights
AirlineSun 05.10Mon 06.10Tue 07.10Wed 08.10Thu 09.10Fri 10.10Sat 11.10
United Airlines
4333333
Frontier Airlines
11------11---
Weekly flights: 26 totalDaily flights: 3.71 averageMost flights: Sunday 4 flights
AirlineSun 12.10Mon 13.10Tue 14.10Wed 15.10Thu 16.10Fri 17.10Sat 18.10
United Airlines
4333333
Frontier Airlines
11------11---
Weekly flights: 26 totalDaily flights: 3.71 averageMost flights: Sunday 4 flights
AirlineSun 19.10Mon 20.10Tue 21.10Wed 22.10Thu 23.10Fri 24.10Sat 25.10
United Airlines
4333333
Frontier Airlines
11------11---
Weekly flights: 26 totalDaily flights: 3.71 averageMost flights: Sunday 4 flights

Check-in for a flight from Ontario to San Francisco

NameCarrier codeIATA CodePassport needed during booking
Frontier AirlinesFFTF9No
United AirlinesUALUANo
Hawaiian AirlinesHALHANo
AviancaAVAAVNo
AeroMéxicoAMXAMYes

Online check-in is not available for these airlines.

Weather in San Francisco

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January14°C7°C
February15°C8°C
March15°C8°C
April17°C9°C
May18°C10°C
June20°C12°C
July21°C13°C
August22°C14°C
September22°C14°C
October21°C13°C
November17°C10°C
December13°C8°C
Hottest Month
22°C
September
Coldest month
7°C
January
Sunny days
333
days per year

14 day forecast

Friday
3 Oct
23°C14°C
10 Oct
20°C15°C
Saturday
4 Oct
18°C12°C
11 Oct
19°C15°C
Sunday
5 Oct
15°C13°C
12 Oct
88%
18°C15°C
Monday
6 Oct
15°C13°C
13 Oct
18°C14°C
Tuesday
7 Oct
21°C16°C
14 Oct
18°C14°C
Wednesday
8 Oct
21°C16°C
15 Oct
18°C14°C
Thursday
9 Oct
19°C15°C
16 Oct
18°C13°C
The distance between Ontario and San Francisco is 586 km. The most popular airlines for this route are Frontier Airlines, United Airlines, Hawaiian Airlines, Avianca, and AeroMéxico. Ontario and San Francisco have 54 direct flights per week. When you arrive at San Francisco, consider visiting Golden Gate Bridge, Alcatraz, and Big Sur.

Frequently asked questions

How long does it take to travel from Ontario to San Francisco?
A one-way nonstop (direct) flight between Ontario and San Francisco takes around 1.3 hours.
What is the flight distance between Ontario and San Francisco?
The flight distance between Ontario and San Francisco is 586 km.
What airlines offer nonstop (direct) flights between Ontario and San Francisco?
Several carriers operate flights between Ontario and San Francisco. Airlines offering nonstop (direct) flights include Frontier Airlines, United Airlines.
What are the most popular routes to and from Ontario?
Travelers frequently search for route combinations, such as Ontario and Guadalajara, Dallas, Seattle, Las Vegas, Mexico City, Houston, Denver, Honolulu, Sacramento, Chicago, Portland, Washington, D.C., New York, Toronto, Orlando, Veracruz, Cancún, Atlanta, London, Manila.
What are the most popular routes to and from San Francisco?
Travelers frequently search for route combinations, such as San Francisco and New York, Los Angeles, Mexico City, London, San Diego, Calgary, Las Vegas, Chicago, Tokyo, Burbank, Seoul, Barcelona, Phoenix, Seattle, New Delhi, Portland, Boston, Vancouver, Denver, Paris.
What airports are near Ontario?
The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Santa Barbara Municipal, Long Beach, Imperial County, Hawthorne Municipal.
What airports are near San Francisco?
The main airport in San Francisco is San Francisco International. It is also served by San Francisco International, Oakland International, Sacramento International, San Jose International, Stockton Metropolitan, Charles M. Schulz–Sonoma County, Monterey Regional, Merced Regional.
Which airlines fly between Ontario and San Francisco?
Currently, you can fly between Ontario and San Francisco with Frontier Airlines, United Airlines, Hawaiian Airlines, Avianca, AeroMéxico.
When’s the best time to travel between Ontario and San Francisco?
If you don’t have specific dates for your trip between Ontario and San Francisco, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.
What flights operate between Ontario and San Francisco?
How many airports are there near Ontario?
How many airports are there near San Francisco?
What time do nonstop (direct) flights between Ontario and San Francisco depart?
What time do nonstop (direct) flights between Ontario and San Francisco arrive?
What time do flights between Ontario and San Francisco depart?
What time do flights between Ontario and San Francisco arrive?

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.

Search flightsSearch direct flights

Explore alternative trips

Flights from Ontario

Flights to San Francisco

The nearest countries with flights to San Francisco

Here is a list of countries people are flying from

Other destination countries from Ontario

Here is a list of countries people are flying to

Airports near Ontario

Airports near San Francisco

Download our app

Start your next adventure now. Download our app and explore cheap flights effortlessly!

Search flights
Find the best connection from Ontario to San Francisco

Search, compare, and book flights to get there.

Search flights