Find Cheap Flights from San Francisco to Ontario (SFO - ONT)

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Good to Know

Low Season:
December
Best time to beat the crowds
3%
expected price decrease
High Season:
October
Most popular time to fly
16%
expected price increase
Average Price:
$230
(avg. price over the last 2 weeks)
Good Deal:
$174
or less (round trip)

When to Book Flights from San Francisco to Ontario

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $173 or less.
The cheapest flight from San Francisco to Ontario was found 90 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be September, October and November. The cheapest month to fly is December.
Morning departure is around 7% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Francisco to Ontario Flights

How long does a flight from San Francisco to Ontario take?
An average nonstop flight takes 1h 18m, covering a distance of 363 miles.
How many flights are there between San Francisco and Ontario?
There are 119 (nonstop) flights between San Francisco and Ontario per week, averaging 15 per day.
Which airlines provide the cheapest flights from San Francisco to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on United ($211), Multiple Airlines ($280) and American Airlines ($356).
Do I need a passport to fly between San Francisco and Ontario?
No.
Which airlines fly most frequently between San Francisco and Ontario?
United (8 times daily), Air Canada (5 times daily), Copa Airlines (3 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Francisco to Ontario?
For San Francisco to Ontario, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Ontario back to San Francisco, the best deals are generally found on Friday, with Monday being the most expensive.

Book cheap flights from San Francisco to Ontario (round-trip)

Airports
Origin
San Francisco
$211
only
$211
Destination
Ontario
$211
only
$211
Tue, Mar 20
SFO
ONT
1h 27m
Tue, Mar 27
ONT
SFO
1h 32m
Trip: 8 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Okay 4.6

Plane got super delayed last minute without notice until arriving there at the gate.

SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

Fri, Mar 30
SFO
ONT
1h 25m
Mon, Apr 2
ONT
SFO
6h 46m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Mar 5
SFO
ONT
6h 25m
Tue, Mar 6
ONT
SFO
6h 56m
Trip: 2 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LAX
MIA
Mediocre 2.0

Couldn’t sleep because the AC wasnt working. Most miserable flight my life

The AC wasn’t working it was the most miserable flight ever

DFW
HKG
Okay 4.6

Tiny seats. Very uncomfortable for 17 hours.

BWI
CLT
Mediocre 3.0

One of the flight attendants was nice.

AA is now trying to save money (presumably) by doing like Delta: forcing half of us to connect in Charlotte. Unfortunately, the Charlotte airport is not ready to accommodate so many people. The airport looks like it is being renovated, which is fine, but there is no tape/cones to mark off the renovated areas from the walkways. You literally walk through dirt and construction sites. I didn't even think that was legal in the US?! Anyway, maybe it will be worth it once the renovations are complete, especially if AA is going to use it as a hub.

DFW
SAT
Okay 4.0

It was short

Completely full plane. Ridiculously tight seat pitch. Overhead bins full. 45-minute delay for a dead-heading flight crew. Long wait for checked baggage. No beverage service because of turbulence. Flight crew out of position is a management problem, don't make it an inconvenience for a 737 full of paying passengers!

DEN
ORD
Good 6.4

I'm not sure where the problem was - whether with AA or Royal Jordanian, but my luggage did not make it to Amman with me. In fact, there was a whole group of passengers traveling on American from different US cities, switching to RJ in Chicago, whose luggage did not come on the flight to Amman. My advice: be sure to pack enough for a couple of days in your carryon - and don't accept an offer to check your carryon to its final destination!

Thu, May 3
SFO
ONT
1h 30m
Tue, May 8
ONT
SFO
1h 32m
Trip: 6 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Mediocre 3.3

N/A

Kept me keep waiting for aircraft for 4 hours and toward the end told me that the flight got cancelled. Then they scheduled me to the 10:45pm flight, and the aircraft didn't come in till 12:40am. I've been waiting at the airport for more than 13 hours

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Okay 4.6

Plane got super delayed last minute without notice until arriving there at the gate.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

Thu, Jun 7
SFO
ONT
1h 35m
Mon, Jun 11
ONT
SFO
1h 27m
Trip: 5 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

Fri, Apr 27
SFO
ONT
1h 30m
Mon, Apr 30
ONT
SFO
1h 29m
Trip: 4 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

Sat, Jun 9
SFO
ONT
1h 28m
Sun, Jun 10
ONT
SFO
1h 23m
Trip: 2 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

Fri, Aug 31
SFO
ONT
1h 27m
Mon, Sep 3
ONT
SFO
1h 35m
Trip: 4 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Mediocre 3.3

N/A

Kept me keep waiting for aircraft for 4 hours and toward the end told me that the flight got cancelled. Then they scheduled me to the 10:45pm flight, and the aircraft didn't come in till 12:40am. I've been waiting at the airport for more than 13 hours

SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

Thu, Mar 15
SFO
ONT
1h 27m
Tue, Mar 20
ONT
SFO
1h 34m
Trip: 6 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

SFO
ONT
Okay 4.6

Plane got super delayed last minute without notice until arriving there at the gate.

SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

Wed, Jul 11
SFO
ONT
1h 18m
Mon, Jul 16
ONT
SFO
1h 35m
Trip: 6 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Okay 4.6

Plane got super delayed last minute without notice until arriving there at the gate.

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

Wed, Feb 28
SFO
ONT
4h 49m
Tue, Mar 6
ONT
SFO
6h 35m
Trip: 7 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
HKG
Okay 4.6

Tiny seats. Very uncomfortable for 17 hours.

BWI
CLT
Mediocre 3.0

One of the flight attendants was nice.

AA is now trying to save money (presumably) by doing like Delta: forcing half of us to connect in Charlotte. Unfortunately, the Charlotte airport is not ready to accommodate so many people. The airport looks like it is being renovated, which is fine, but there is no tape/cones to mark off the renovated areas from the walkways. You literally walk through dirt and construction sites. I didn't even think that was legal in the US?! Anyway, maybe it will be worth it once the renovations are complete, especially if AA is going to use it as a hub.

JFK
MAD
Okay 4.0

Very old plane. No personal entertainment. Very basic service.

LAX
CLT
Mediocre 2.6

I got there safely.

I will never fly American Airlines again. From the moment I checked in with the ticket agent to getting off the plane it was a disaster. The ticket agent was rude, hostile, and dismissive. Employees walked through the line at security forcing everyone to consolidate their belongings to one bag. I had a large wallet in my hand and was told I had to step out of line to put it in my backpack. They only allow you one bag to carry on without paying extra. At the time of boarding they announced that the overhead storage was full so even those that paid extra were still forced to check their bags. The plane was dirty, the service was slow, overall just gross. They don’t have WiFi or in flight entertainment so I paid the $20 to purchase the WiFi. It was worthless. I couldn’t stream anything, even music kept stopping to buffer. I understand it will be slower then on ground WiFi, but it was impossible to watch anything and a complete waste of money.

ORD
MCO
Mediocre 2.6

Horribly made me cancel flight because of 1min after 30 min cut off for boarding pass. Sat at the front desk for 29 minute arguing until my plane left.

Wed, Jul 25
SFO
ONT
1h 18m
Mon, Jul 30
ONT
SFO
1h 30m
Trip: 6 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Mediocre 3.3

N/A

Kept me keep waiting for aircraft for 4 hours and toward the end told me that the flight got cancelled. Then they scheduled me to the 10:45pm flight, and the aircraft didn't come in till 12:40am. I've been waiting at the airport for more than 13 hours

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

Fri, Apr 6
SFO
ONT
5h 55m
Sun, Apr 8
ONT
SFO
12h 21m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
MCO
Mediocre 2.6

Horribly made me cancel flight because of 1min after 30 min cut off for boarding pass. Sat at the front desk for 29 minute arguing until my plane left.

PHL
AMS
Okay 4.6

Fo

DFW
HKG
Okay 4.6

Tiny seats. Very uncomfortable for 17 hours.

MKE
PHX
Okay 5.6

The crew was lovely. Really nice, and did a wonderful job with the cart service.

We ended up being deleyed about 30 minutes, in damp weather. It's not like it was snowing. Not sure why it took so long. B/c of baggage charges now everyone brings a carry on. This seems to slow the process of boarding as know passengers are asked multiple times to check baggage (for free, which is the one nice thing) before boarding b/c the overheads will be too full. Group 6 which I was in seemed like it was just the rest of the plane. Super busy, took me forever to get to my seat all the way in the back. Why don't airlines reverse board? People sitting in the back should board first. I feel like this would save so much time.

DEN
ORD
Good 6.4

I'm not sure where the problem was - whether with AA or Royal Jordanian, but my luggage did not make it to Amman with me. In fact, there was a whole group of passengers traveling on American from different US cities, switching to RJ in Chicago, whose luggage did not come on the flight to Amman. My advice: be sure to pack enough for a couple of days in your carryon - and don't accept an offer to check your carryon to its final destination!

Fri, Mar 30
SFO
ONT
1h 25m
Sun, Apr 1
ONT
SFO
1h 34m
Trip: 3 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

Tue, Feb 27
SFO
ONT
1h 25m
Tue, Mar 27
ONT
SFO
1h 32m
Trip: 28 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 81 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Mediocre 3.3

N/A

Kept me keep waiting for aircraft for 4 hours and toward the end told me that the flight got cancelled. Then they scheduled me to the 10:45pm flight, and the aircraft didn't come in till 12:40am. I've been waiting at the airport for more than 13 hours

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

Show more results

San Francisco to Ontario Flight Information

Avg. Flight Duration 1h 28m
Flights Arrive in Ontario
Flights Depart from San Francisco
Flight Price $211
Distance 363 miles
Airlines United, American Airlines
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.