Find Cheap Flights from Ontario to Oakland (ONT - OAK)

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Good to Know

Average Price:
$358
(avg. price over the last 2 weeks)
Good Deal:
$139
or less (round trip)

When to Book Flights from Ontario to Oakland

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 $139 or less.
The cheapest flight from Ontario to Oakland was found 63 days before departure, on average.
Book at least 5 weeks before departure in order to get a below-average price.
Morning departure is around 6% 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 Ontario to Oakland Flights

How long does a flight from Ontario to Oakland take?
An average nonstop flight takes 5h 37m, covering a distance of 361 miles.
How many flights are there between Ontario and Oakland?
There are 56 (nonstop) flights between Ontario and Oakland per week, averaging 8 per day.
Which airlines provide the cheapest flights from Ontario to Oakland?
In the past 3 days, the cheapest round-trip tickets were found on American Airlines ($130), Alaska Airlines ($297) and Multiple Airlines ($416).
Do I need a passport to fly between Ontario and Oakland?
No.
Which airlines fly most frequently between Ontario and Oakland?
Southwest (8 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Ontario to Oakland?
For Ontario to Oakland, Wednesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Oakland back to Ontario, the best deals are generally found on Tuesday, with Friday being the most expensive.

Book cheap flights from Ontario to Oakland (round-trip)

Airports
Origin
Ontario
$130
only
$130
Destination
Oakland
$130
only
$130
Wed, Feb 21
ONT
OAK
6h 19m
Sat, Feb 24
OAK
ONT
5h 58m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
ORD
Excellent 10.0

Smooth in every way.

PHX
EWR
Good 6.0

Bought a sandwich which was old ...

DFW
DCA
Excellent 10.0

Fast and efficient service

Not applicable

CLT
CHO
Okay 5.0

On time. Jet rather than a turbo-prop plane. Quick flight.

Somewhat haphazard boarding. Not even a cookie for a snack.

LAX
HNL
Excellent 10.0

Great vegetarian meal.

Wed, Apr 4
ONT
OAK
12h 02m
Sat, Apr 7
OAK
ONT
10h 23m
Trip: 4 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 16524 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SEA
ANC
Excellent 10.0

It was great we had a nice Tailwind that got us in 50 min early . Space in seating was more than adequit.

Their wasn't anything I disliked.

SJC
SEA
Excellent 9.5

Being on time.

SEA
ANC
Excellent 10.0

served some great refreshments even while serving was going on they made it easy to sleep

ANC
FAI
Excellent 10.0

great views! pilot interactions one woman on the crew was extremely personable & friendly!!! she stood out above the rest. :) (don't know her name but short blonde hair. friend and I agreed that she was great) windows clean enough to take some great pictures from the window

SAT
SEA
Mediocre 2.0

The cabin crew were very nice.

The original flight was cancelled due to weather condition that caused a domino effect for me that disrupted all my other travel plans.

Fri, Feb 9
ONT
OAK
6h 19m
Mon, Feb 12
OAK
ONT
5h 58m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLE
ORD
Excellent 9.3

Like my AA rides > 90% of the time. The usual prob is sketchy gogo service.

Nogo gogo

DEN
CLT
Good 6.3

On time. Efficient boarding.

Stingy with the cookies. Somewhat uncomfortable seating. But what can anyone expect anymore?

DFW
DCA
Excellent 10.0

Fast and efficient service

Not applicable

DFW
ORD
Excellent 10.0

Smooth in every way.

MIA
SJU
Good 6.0

Last minute cancellation and reschedule if original flight with 20 people hounding the gate for standby status. Craziness. These last minute revisions mist stop

Fri, Mar 23
ONT
OAK
7h 11m
Sun, Mar 25
OAK
ONT
4h 56m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 20
ONT
OAK
6h 18m
Wed, Mar 21
OAK
ONT
5h 58m
Trip: 2 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
LAX
Excellent 10.0

Overall good service.

MSP
ORD
Good 6.0

eh. not enough space, like most airlines these days. Flight wasn't long enough to hate it though.

CLT
CHO
Okay 5.0

On time. Jet rather than a turbo-prop plane. Quick flight.

Somewhat haphazard boarding. Not even a cookie for a snack.

DFW
ORD
Excellent 10.0

Smooth in every way.

LAX
HNL
Excellent 10.0

Great vegetarian meal.

Sat, Apr 28
ONT
OAK
5h 37m
Sun, Apr 29
OAK
ONT
5h 55m
Trip: 2 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
PHX
EWR
Good 6.0

Bought a sandwich which was old ...

CLT
CHO
Okay 5.0

On time. Jet rather than a turbo-prop plane. Quick flight.

Somewhat haphazard boarding. Not even a cookie for a snack.

CLT
LAX
Good 6.0

Staff was friendly and genuine

They didn’t load enough “for purchase” food. This was a six hour flight! They has no options left excepthummus and chips. This is second flight on American this year where they don’t supply the plane appropriately.

LAX
HNL
Excellent 10.0

Great vegetarian meal.

CLE
ORD
Excellent 9.3

Like my AA rides > 90% of the time. The usual prob is sketchy gogo service.

Nogo gogo

Fri, Jan 26
ONT
OAK
6h 19m
Mon, Jan 29
OAK
ONT
5h 58m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
MIA
SJU
Good 6.0

Last minute cancellation and reschedule if original flight with 20 people hounding the gate for standby status. Craziness. These last minute revisions mist stop

PHX
EWR
Good 6.0

Bought a sandwich which was old ...

DFW
LAX
Excellent 10.0

Overall good service.

MSP
ORD
Good 6.0

eh. not enough space, like most airlines these days. Flight wasn't long enough to hate it though.

SAN
PHX
Excellent 9.0

The friendly and attentive flight staff.

Fri, May 11
ONT
OAK
11h 57m
Sun, May 13
OAK
ONT
13h 27m
Trip: 3 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 16524 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SEA
ANC
Excellent 10.0

It was great we had a nice Tailwind that got us in 50 min early . Space in seating was more than adequit.

Their wasn't anything I disliked.

LAX
SEA
Excellent 10.0

crew was nice Slept easily

HNL
SAN
Excellent 9.3

The crew was very kind and the in flight entertainment was perfect. I didn't have headphones so I was ready to purchase some, but Alaska gives them out for FREE. The seats were also one of the most comfortable (for coach standards) I've been in.

Not a huge deal but I'm one of those people who are alwayscold and got cold on the flight. Unfortunately they don't have blankets but I had a hoodie that flight attend got down for me that worked just fine. Also, no complimentary food, so just make sure to stock up before boarding.

SAT
SEA
Mediocre 2.0

The cabin crew were very nice.

The original flight was cancelled due to weather condition that caused a domino effect for me that disrupted all my other travel plans.

DFW
PDX
Excellent 9.0

Everything

N/A

Fri, Mar 9
ONT
OAK
6h 18m
Sun, Mar 11
OAK
ONT
5h 39m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
CHO
Okay 5.0

On time. Jet rather than a turbo-prop plane. Quick flight.

Somewhat haphazard boarding. Not even a cookie for a snack.

DFW
LAX
Excellent 10.0

Overall good service.

SAN
PHX
Excellent 9.0

The friendly and attentive flight staff.

PHX
EWR
Good 6.0

Bought a sandwich which was old ...

LAX
HNL
Excellent 10.0

Great vegetarian meal.

Fri, May 11
ONT
OAK
6h 00m
Mon, May 14
OAK
ONT
5h 49m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLE
ORD
Excellent 9.3

Like my AA rides > 90% of the time. The usual prob is sketchy gogo service.

Nogo gogo

LAX
HNL
Excellent 10.0

Great vegetarian meal.

DFW
LAX
Excellent 10.0

Overall good service.

MSP
ORD
Good 6.0

eh. not enough space, like most airlines these days. Flight wasn't long enough to hate it though.

DFW
ORD
Excellent 10.0

Smooth in every way.

Fri, Jan 26
ONT
OAK
7h 15m
Sat, Jan 27
OAK
ONT
10h 13m
$1120
Trip: 2 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 16524 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SJC
SEA
Excellent 9.5

Being on time.

ANC
FAI
Excellent 10.0

great views! pilot interactions one woman on the crew was extremely personable & friendly!!! she stood out above the rest. :) (don't know her name but short blonde hair. friend and I agreed that she was great) windows clean enough to take some great pictures from the window

SEA
ANC
Excellent 10.0

Everything

N/A

LAX
SEA
Excellent 10.0

crew was nice Slept easily

HNL
SJC
Excellent 8.0

Seemed roomy, crew was nice.

Show more results

Ontario to Oakland Flight Information

Flights Arrive in Oakland
Flights Depart from Ontario
Flight Price $130
Distance 361 miles
Airlines American Airlines, Alaska 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.