Find Cheap Flights from San Jose to Ontario (SJC - ONT)

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Sat 11/18
Sat 11/25
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Good to Know

Average Price:
$370
(avg. price over the last 2 weeks)
Good Deal:
$156
or less (round trip)

When to Book Flights from San Jose to Ontario

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

Top tips for Finding a Cheap Flight

When looking for a cheap flight, consider that 25% of our users selected a flight on this route for $156 or less.
The cheapest flight from San Jose to Ontario was found 73 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
Morning departure is around 13% cheaper 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 Jose to Ontario Flights

How long does a flight from San Jose to Ontario take?
An average nonstop flight takes 4h 44m, covering a distance of 332 miles.
How many flights are there between San Jose and Ontario?
There are 106 (nonstop) flights between San Jose and Ontario per week, averaging 17 per day.
Which airlines provide the cheapest flights from San Jose to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($108), American Airlines ($166) and Alaska Airlines ($368).
Do I need a passport to fly between San Jose and Ontario?
No.
Which airlines fly most frequently between San Jose and Ontario?
Southwest (15 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Jose to Ontario?
For San Jose to Ontario, Tuesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Ontario back to San Jose, the best deals are generally found on Monday, with Wednesday being the most expensive.

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

Airports
Origin
San Jose
$108
only
$108
Destination
Ontario
$108
only
$108
Tue, Dec 12
SJC
ONT
22h 02m
Wed, Dec 20
ONT
SJC
7h 25m
Trip: 9 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
SLC
Okay 5.6

Food, entertainment NA, didn’t use. Rest of flight uneventful, happy to say. Because this was so late due to previous leg of journey delayed, our planned transportation to hotel wa not available.

MIA
PHL
Okay 5.6

Flight was on time. The flight was fast and the crew was helpful and courteous

It was cramped. Couldn't recline back. Was only offered water

MIA
CVG
Good 6.0

More snack/food options

PBI
ISP
Mediocre 2.0

Was unable to make it

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

Wed, Jan 10
SJC
ONT
6h 06m
Sat, Jan 13
ONT
SJC
6h 01m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25178 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORF
DFW
Excellent 8.0

The crew were very kind and helpful, going above what was needed!

PHL
PHX
Okay 5.0

Arrived safely and on time.

No power outlets at seats.

MBJ
PHL
Excellent 8.6

AA flight was relaxed and smooth, crew was respectful and warm can’t think

Can’t think of anything I didn’t like

DCA
CLE
Okay 5.0

American Airlines flying out of DCA is highly disorganized. I will look to fly to Washington-Dulles next time, or just avoid American Airlines altogether.

BDL
CLT
Okay 4.0

No baggage controls from seat 18 to 28 no bags would fit. As we exited all the front rows we're waiting to get there bags stored in back of planes overhead bins. That's just not right, especially when they charge us extra to take a bag for overhead bins storage.

Thu, Nov 30
SJC
ONT
22h 05m
Mon, Dec 4
ONT
SJC
7h 15m
Trip: 5 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MCO
DEN
Okay 4.6

The seats were clean; the cabin looked very nice. The plane got me from point A to B safely. smoothest Lansing ever!

Flight was delayed 2.5 hours. No communication from the cockpit, 2 out of the 4 flight attendants we really crabby. Undersea storage was unusually small. I’m 5’8” and my knees were pressed against the seat in front of me and the seats are hard. My legs were numb for part of the trip.

DEN
ORD
Okay 5.3

Low cost

They make you pay for everything. Even peanuts. No entertainment.

DEN
SLC
Okay 5.6

Food, entertainment NA, didn’t use. Rest of flight uneventful, happy to say. Because this was so late due to previous leg of journey delayed, our planned transportation to hotel wa not available.

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

PVD
TPA
Excellent 9.3

Cheap, comfortable and friendly staff

Getting off the plane took forever on both legs.

Tue, Nov 28
SJC
ONT
22h 00m
Thu, Nov 30
ONT
SJC
23h 05m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHL
MIA
Excellent 10.0

Same as all the other airlines in my opinion. Just way more afreoadable.

DEN
SLC
Okay 5.6

Food, entertainment NA, didn’t use. Rest of flight uneventful, happy to say. Because this was so late due to previous leg of journey delayed, our planned transportation to hotel wa not available.

DEN
ORD
Okay 5.3

Low cost

They make you pay for everything. Even peanuts. No entertainment.

MCO
DEN
Okay 4.6

The seats were clean; the cabin looked very nice. The plane got me from point A to B safely. smoothest Lansing ever!

Flight was delayed 2.5 hours. No communication from the cockpit, 2 out of the 4 flight attendants we really crabby. Undersea storage was unusually small. I’m 5’8” and my knees were pressed against the seat in front of me and the seats are hard. My legs were numb for part of the trip.

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

Tue, Nov 21
SJC
ONT
4h 44m
Fri, Nov 24
ONT
SJC
5h 36m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Mar 9
SJC
ONT
24h 47m
Sun, Mar 11
ONT
SJC
26h 15m
Trip: 3 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 15220 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.8
Food
8.0
SJC
SEA
Good 6.0

Airplane was dirty upon boarding - food and miscellaneous remnants on the seats and floor, used trash bag in the seat back in front of me

MSY
SEA
Excellent 8.0

No crying babies and outlets at all seats.

I wish the seats reclined more or had more padding.

PHX
SEA
Excellent 10.0

Excellent Crew - I flew standby, so have great gate agents and flight attendants makes all the difference when you’re hoping for a seat. In flight they are professional and personable and keep you up to date on what you need to know! Plus, I’m always happy when my flights have USB ports so I’m fully charged when I deplane.

I always want more leg room or a little more room under the seat in front of me. But I didn’t upgrade for a roomier seat and there was more than enough overhead space, so truly can’t complain about it!

MEX
SFO
Excellent 8.0

Flight attendants very attentive and helpful as well as a smooth fligh.

Departed late was the only thing, otherwise very good.

SEA
LAX
Excellent 10.0

Great service for an affordable price!

Sun, Dec 3
SJC
ONT
5h 35m
Tue, Dec 5
ONT
SJC
5h 56m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25178 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
MBJ
PHL
Excellent 8.6

AA flight was relaxed and smooth, crew was respectful and warm can’t think

Can’t think of anything I didn’t like

ORF
DFW
Excellent 8.0

The crew were very kind and helpful, going above what was needed!

BDL
CLT
Okay 4.0

No baggage controls from seat 18 to 28 no bags would fit. As we exited all the front rows we're waiting to get there bags stored in back of planes overhead bins. That's just not right, especially when they charge us extra to take a bag for overhead bins storage.

PWM
PHL
Okay 4.6

We arrived on time.

These planes feel like they are made of Legos. They are absurdly tiny and uncomfortable (and I am a small woman). Hot and stinky when boarding and no room for you or your carry on luggage. The days of glamorous air travel seem very far away.

JUL
LIM
Okay 4.0

The bag search was very thorough and many employees were wearing their Peru jerseys under their uniforms.

Everything else. Flight was delayed almost four hours with no explanation. Received multiple calls from Avianca but all in Spanish until fifth one in English hung up once we confirmed we understood there was a delay. Staff communicated different directions. Only one cafe to wait in. Substitute breakfast served was underwhelming. Plane was incredibly dated with life vests strewn about/not tucked away. Upon deboarding, incredibly unclear that we had to completely exit and go back through security, meaning we had no time between flights for the restroom or to buy water.

Thu, Feb 1
SJC
ONT
6h 06m
Sun, Feb 4
ONT
SJC
5h 31m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25178 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
FAT
DFW
Excellent 10.0

Nice amount of leg room!!!

Nothing

ORF
DFW
Excellent 8.0

The crew were very kind and helpful, going above what was needed!

LAX
MIA
Good 7.6

Movies, clean, efficient

Paying of my small Checked bag

CHO
ORD
Good 7.6

It was a little hot in the plane at during start and touchdown

PWM
PHL
Okay 4.6

We arrived on time.

These planes feel like they are made of Legos. They are absurdly tiny and uncomfortable (and I am a small woman). Hot and stinky when boarding and no room for you or your carry on luggage. The days of glamorous air travel seem very far away.

Thu, May 3
SJC
ONT
5h 48m
Sun, May 6
ONT
SJC
5h 51m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25178 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
PWM
PHL
Okay 4.6

We arrived on time.

These planes feel like they are made of Legos. They are absurdly tiny and uncomfortable (and I am a small woman). Hot and stinky when boarding and no room for you or your carry on luggage. The days of glamorous air travel seem very far away.

MBJ
PHL
Excellent 8.6

AA flight was relaxed and smooth, crew was respectful and warm can’t think

Can’t think of anything I didn’t like

LAX
MIA
Good 7.6

Movies, clean, efficient

Paying of my small Checked bag

BDL
CLT
Okay 4.0

No baggage controls from seat 18 to 28 no bags would fit. As we exited all the front rows we're waiting to get there bags stored in back of planes overhead bins. That's just not right, especially when they charge us extra to take a bag for overhead bins storage.

SAL
MIA
Excellent 8.6

There was no individual entertainment on board (TV’s, internet, etc)

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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.