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

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Sat 12/23
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Good to Know

Average Price:
$333
(avg. price over the last 2 weeks)
Good Deal:
$142
or less (round trip)

When to Book Flights from Oakland to Ontario

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 $142 or less.
The cheapest flight from Oakland to Ontario was found 39 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
Morning departure is around 20% 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 Oakland to Ontario Flights

How long does a flight from Oakland to Ontario take?
An average nonstop flight takes 4h 40m, covering a distance of 361 miles.
How many flights are there between Oakland and Ontario?
There are 153 (nonstop) flights between Oakland and Ontario per week, averaging 23 per day.
Which airlines provide the cheapest flights from Oakland to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on American Airlines ($166), Multiple Airlines ($204) and Alaska Airlines ($272).
Do I need a passport to fly between Oakland and Ontario?
No.
Which airlines fly most frequently between Oakland and Ontario?
Southwest (21 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Oakland to Ontario?
For Oakland to Ontario, Wednesday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Ontario back to Oakland, the best deals are generally found on Thursday, with Saturday being the most expensive.

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

Airports
Origin
Oakland
$166
only
$166
Destination
Ontario
$166
only
$166
Wed, Jan 17
OAK
ONT
5h 58m
Fri, Jan 19
ONT
OAK
6h 19m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
YUL
MIA
Excellent 10.0

First time flyer with American airlines and the service was impeccable

Nothing to dislike

ORD
LAX
Excellent 9.5

Easy, smooth.

GRU
JFK
Mediocre 3.6

The only decent point was the food. Not great but at least edible.

Since check in in São Paulo was a complete chaos. There were only 2 people helping on check in (in machines) and these people were still not helping people (like me) with questions about on how to do check in in those machines. On the other hand to dispatch the bags there were almost 8 attendants to receive the bags. Ridiculous! I’ve tried calling American Airlines and Latam several times to assign a seat for me and they swore there were only middle seats but I know how airlines work to make extra money on these seats. At the end, they only gave me a middle seat option and I had to take I.t of course. On the plane I realized there were dozens of empty seats and yet they made sure not give them to me or anyone else. Unbelievable! Unfortunately I still have to use AA on my way back to Brazil. After this, I’ll chose another airlines for sure. Also, the 3,4,3 arrangement is ridiculous: there’s no corridor space making people touching you everything someone passes by your seat. And boy! Those seats are so uncomfortable and there’s no way to incline the chair so you can even have a little rest (because it’s impossible to even sleep on those seats). The crew were simply doing their jobs! No pleasure! No smile! No engaging with anyone unfortunately! They looked miserable and I asked for water and the flight attendant NEVER brought me anything. Seriously! Water is free!

DFW
SCL
Excellent 9.6

The food is very tasty, but AA has not changed the menu in at least one year.

SFO
DFW
Excellent 10.0

On time. Comfortable seat. Courteous crew. Easy transfer.

Thu, Mar 1
OAK
ONT
8h 00m
Sat, Mar 3
ONT
OAK
6h 15m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Jan 26
OAK
ONT
15h 05m
Mon, Jan 29
ONT
OAK
12h 07m
Trip: 4 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 15788 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
IAD
SEA
Good 7.0

I would like to possibly see some better food options maybe for people who can not consume dairy. With the many different cheese platters, I was very uninterested. I had an early flight and thought I'd be able to eat something with a sort of substance. I was quite disappointed, I guess I'll have to be the annoying customer who brings chipotle on the plane next time.

JFK
PDX
Excellent 8.0

The crew was very attentive to the passengers.

I was surprised that a meal was not complimentary.

PDX
JFK
Okay 4.0

For red Eye flight, need to give sleeping setting No lights!

SFO
SEA
Okay 5.3

I checked in to the flight 24 hours ahead to ensure I got an aisle seat, because I knew I’d probably be going back and forth from the bathroom because I had been feeling ill. When I got to the ticket check to board the flight, my name wasn’t found in the system, and I was turned away to go back to the front desk. So I did, and the person there was seemingly able to get me an aisle seat in the same row, just across from where I originally was. But, when I got to the row, another man was in that spot and showed me his ticket which was the same seat I’d seemingly been re-assigned! The middle seat was empty, and so I sat there for the time being, while we enquired about it. One of the flight attendants said they’d look into it, but just seemed to brush it off and never gave us a response. I was mainly annoyed about being shuffled around, getting reassigned a spot and was clear about wanting an aisle seat, and it never happened even though I chose that seat 24 hours ahead in the first place. I felt there were a few chances to make it right, but it never happened.

PDX
SMF
Excellent 10.0

Customer service was great and there is actual legroom in coach!

Tue, Feb 20
OAK
ONT
5h 58m
Fri, Feb 23
ONT
OAK
6h 19m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
YUL
MIA
Excellent 10.0

First time flyer with American airlines and the service was impeccable

Nothing to dislike

JFK
MXP
Mediocre 2.6

Plane was old and dirty, seat pocket had junk in it. Seat was broken and couldn’t stay up. In flight movies were from few years back with a center tv and no head rest screen. Crew on overseas flights tend to be older in age and less tolerant..much better on continental on the same route.

LAX
AKL
Okay 5.6

Smooth operation, on time

Seat pitch on the plane unbelievably cramped. When seats are so close that if you drop something on the floor you have to be a contortionist to get it, you know it's a problem NEVER fly the 787-900 economy.

DFW
SCL
Excellent 9.6

The food is very tasty, but AA has not changed the menu in at least one year.

GRU
JFK
Mediocre 3.6

The only decent point was the food. Not great but at least edible.

Since check in in São Paulo was a complete chaos. There were only 2 people helping on check in (in machines) and these people were still not helping people (like me) with questions about on how to do check in in those machines. On the other hand to dispatch the bags there were almost 8 attendants to receive the bags. Ridiculous! I’ve tried calling American Airlines and Latam several times to assign a seat for me and they swore there were only middle seats but I know how airlines work to make extra money on these seats. At the end, they only gave me a middle seat option and I had to take I.t of course. On the plane I realized there were dozens of empty seats and yet they made sure not give them to me or anyone else. Unbelievable! Unfortunately I still have to use AA on my way back to Brazil. After this, I’ll chose another airlines for sure. Also, the 3,4,3 arrangement is ridiculous: there’s no corridor space making people touching you everything someone passes by your seat. And boy! Those seats are so uncomfortable and there’s no way to incline the chair so you can even have a little rest (because it’s impossible to even sleep on those seats). The crew were simply doing their jobs! No pleasure! No smile! No engaging with anyone unfortunately! They looked miserable and I asked for water and the flight attendant NEVER brought me anything. Seriously! Water is free!

Thu, Mar 1
OAK
ONT
8h 00m
Sat, Mar 3
ONT
OAK
6h 15m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 21
OAK
ONT
5h 58m
Sat, Feb 24
ONT
OAK
6h 15m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
BNA
DFW
Good 7.3

Everything else

JFK
CDG
Mediocre 2.0

Nothing. From the plane to the awful delay and poor service.

Lack of communication. Old plane, no comfort and 6 HOURS DELAYED. Truly disappointed by the airline

PHL
ATL
Okay 5.3

On time

Rude flight attendant

DFW
SCL
Excellent 9.6

The food is very tasty, but AA has not changed the menu in at least one year.

CLE
JFK
Mediocre 3.3

Plane was dirty and crew inattentive.

Sat, Jan 6
OAK
ONT
5h 40m
Mon, Jan 8
ONT
OAK
6h 19m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLE
JFK
Mediocre 3.3

Plane was dirty and crew inattentive.

GRU
JFK
Mediocre 3.6

The only decent point was the food. Not great but at least edible.

Since check in in São Paulo was a complete chaos. There were only 2 people helping on check in (in machines) and these people were still not helping people (like me) with questions about on how to do check in in those machines. On the other hand to dispatch the bags there were almost 8 attendants to receive the bags. Ridiculous! I’ve tried calling American Airlines and Latam several times to assign a seat for me and they swore there were only middle seats but I know how airlines work to make extra money on these seats. At the end, they only gave me a middle seat option and I had to take I.t of course. On the plane I realized there were dozens of empty seats and yet they made sure not give them to me or anyone else. Unbelievable! Unfortunately I still have to use AA on my way back to Brazil. After this, I’ll chose another airlines for sure. Also, the 3,4,3 arrangement is ridiculous: there’s no corridor space making people touching you everything someone passes by your seat. And boy! Those seats are so uncomfortable and there’s no way to incline the chair so you can even have a little rest (because it’s impossible to even sleep on those seats). The crew were simply doing their jobs! No pleasure! No smile! No engaging with anyone unfortunately! They looked miserable and I asked for water and the flight attendant NEVER brought me anything. Seriously! Water is free!

ORD
LAX
Excellent 9.5

Easy, smooth.

JFK
CDG
Mediocre 2.0

Nothing. From the plane to the awful delay and poor service.

Lack of communication. Old plane, no comfort and 6 HOURS DELAYED. Truly disappointed by the airline

DFW
SCL
Excellent 9.6

The food is very tasty, but AA has not changed the menu in at least one year.

Fri, Dec 29
OAK
ONT
4h 40m
Thu, Jan 4
ONT
OAK
6h 47m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 1
OAK
ONT
5h 30m
Sat, May 5
ONT
OAK
5h 35m
Trip: 5 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 15788 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SJO
LAX
Mediocre 2.0

Nothing

We were delayed. Crew was rude. Then we flew to another airport just to get fuel, which further delayed us. We arrived late to the connecting airport and missed our connecting flight home. Not given food vouchers. Had to pay for 1 checked bag despite flying internationally. Overall, very dissasatisfied with Alaska Airlines and I will be sure to go out of my way not to book again with Alaska.

SNA
PDX
Excellent 8.0

On time and no lines

JFK
PDX
Excellent 8.0

The crew was very attentive to the passengers.

I was surprised that a meal was not complimentary.

IAD
SEA
Good 7.0

I would like to possibly see some better food options maybe for people who can not consume dairy. With the many different cheese platters, I was very uninterested. I had an early flight and thought I'd be able to eat something with a sort of substance. I was quite disappointed, I guess I'll have to be the annoying customer who brings chipotle on the plane next time.

SEA
KTN
Excellent 10.0

The Captain of this flight did an awesome land g in Ketchikan, AK. The runway is short and this was the smoothest touchdown for a landing ever! Thank you whoever the Captain was!!!

The only part I could honestly say was I wish I booked an earlier flight to see Ketchikan from above prior to landing.

Thu, Apr 5
OAK
ONT
5h 49m
Tue, Apr 10
ONT
OAK
6h 00m
Trip: 6 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
PHL
ATL
Okay 5.3

On time

Rude flight attendant

DFW
SCL
Excellent 9.6

The food is very tasty, but AA has not changed the menu in at least one year.

JFK
MXP
Mediocre 2.6

Plane was old and dirty, seat pocket had junk in it. Seat was broken and couldn’t stay up. In flight movies were from few years back with a center tv and no head rest screen. Crew on overseas flights tend to be older in age and less tolerant..much better on continental on the same route.

BNA
DFW
Good 7.3

Everything else

CLE
JFK
Mediocre 3.3

Plane was dirty and crew inattentive.

Wed, Dec 20
OAK
ONT
5h 52m
Sat, Dec 23
ONT
OAK
5h 54m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
YUL
MIA
Excellent 10.0

First time flyer with American airlines and the service was impeccable

Nothing to dislike

DFW
PBI
Okay 5.6

Free movies, and crew were helpful once we were in the air

Gate agent did not start forcing check in, which caused delay in boarding. Ground crew did not stock aircraft until 20 minutes after scheduled departure time. and DFW did the usual 20 minute taxi and then 15 minute hold prior to take off.

SFO
DFW
Excellent 10.0

On time. Comfortable seat. Courteous crew. Easy transfer.

BNA
DFW
Good 7.3

Everything else

PHL
ATL
Okay 5.3

On time

Rude flight attendant

Wed, Dec 27
OAK
ONT
4h 40m
Sun, Dec 31
ONT
OAK
5h 54m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
SFO
DFW
Excellent 10.0

On time. Comfortable seat. Courteous crew. Easy transfer.

LAX
AKL
Okay 5.6

Smooth operation, on time

Seat pitch on the plane unbelievably cramped. When seats are so close that if you drop something on the floor you have to be a contortionist to get it, you know it's a problem NEVER fly the 787-900 economy.

BNA
DFW
Good 7.3

Everything else

PHL
ATL
Okay 5.3

On time

Rude flight attendant

CLE
JFK
Mediocre 3.3

Plane was dirty and crew inattentive.

Thu, Dec 28
OAK
ONT
14h 36m
Wed, Jan 3
ONT
OAK
12h 07m
Trip: 7 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 15788 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
DFW
PDX
Excellent 10.0

Nice, easy flight. Boarding was smooth and easy. Really like their 20 minutes to have baggage to carousel rule....nice!

SAN
SEA
Excellent 8.0

I like the internet for text being free, and staff is nice.

Food is not free.

SNA
PDX
Excellent 8.0

On time and no lines

JFK
PDX
Excellent 8.0

The crew was very attentive to the passengers.

I was surprised that a meal was not complimentary.

BOS
SEA
Good 6.3

The Gogo videos didn't work much of the time.

Sat, Dec 30
OAK
ONT
15h 44m
Wed, Jan 3
ONT
OAK
12h 07m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Dec 26
OAK
ONT
5h 21m
Fri, Dec 29
ONT
OAK
12h 07m
$1178
Trip: 4 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 15788 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
DFW
PDX
Excellent 10.0

Nice, easy flight. Boarding was smooth and easy. Really like their 20 minutes to have baggage to carousel rule....nice!

PDX
SMF
Excellent 10.0

Customer service was great and there is actual legroom in coach!

IAD
SEA
Good 7.0

I would like to possibly see some better food options maybe for people who can not consume dairy. With the many different cheese platters, I was very uninterested. I had an early flight and thought I'd be able to eat something with a sort of substance. I was quite disappointed, I guess I'll have to be the annoying customer who brings chipotle on the plane next time.

SFO
SEA
Okay 5.3

I checked in to the flight 24 hours ahead to ensure I got an aisle seat, because I knew I’d probably be going back and forth from the bathroom because I had been feeling ill. When I got to the ticket check to board the flight, my name wasn’t found in the system, and I was turned away to go back to the front desk. So I did, and the person there was seemingly able to get me an aisle seat in the same row, just across from where I originally was. But, when I got to the row, another man was in that spot and showed me his ticket which was the same seat I’d seemingly been re-assigned! The middle seat was empty, and so I sat there for the time being, while we enquired about it. One of the flight attendants said they’d look into it, but just seemed to brush it off and never gave us a response. I was mainly annoyed about being shuffled around, getting reassigned a spot and was clear about wanting an aisle seat, and it never happened even though I chose that seat 24 hours ahead in the first place. I felt there were a few chances to make it right, but it never happened.

SJO
LAX
Mediocre 2.0

Nothing

We were delayed. Crew was rude. Then we flew to another airport just to get fuel, which further delayed us. We arrived late to the connecting airport and missed our connecting flight home. Not given food vouchers. Had to pay for 1 checked bag despite flying internationally. Overall, very dissasatisfied with Alaska Airlines and I will be sure to go out of my way not to book again with Alaska.

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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.