Cheap flights from Oakland to Ontario (OAK - ONT) from $89

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
OAK — ONT
Feb 20 — Feb 271

The best prices from Oakland to Ontario are usually found in November or March, booked 27 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

How to find the cheapest flight from Oakland (OAK) to Ontario (ONT)

Discover tips and strategies to find the most affordable flight options for your journey from Oakland (OAK) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 16, 2024.

Popular in

October

Cheapest in

November

Round-trip from

$238

One-way from

$89
High demand for flights, 41% potential price rise
Best time to find cheap flights, 23% potential price drop
From Oakland to Ontario
One-way flight from Oakland to Ontario

What is the cheapest day to fly round-trip from Oakland, California to Ontario?

Monday is generally a great day to depart. Flying on this day could help you save up to 46%.

How far in advance should I book a flight from Oakland, California to Ontario?

To save on the cost of your flight from Oakland, California to Ontario, book at least 38 days before your planned departure. Booking around this time can save you about 59% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $129 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $203.

What is the cheapest month to fly from Oakland, California to Ontario?

January can be a great time to fly to Ontario from Oakland, California with a flight ticket averaging about $150. Cheapflights users have found deals in the month of January for as cheap as $49. The most expensive prices can be found in the month of November.

When is the cheapest time to fly from Oakland, California to Ontario (OAK - ONT)?

A simple way to save on the total cost of your ticket is to fly from Oakland, California to Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 43% on your trip compared to booking a flight in the afternoon.

Cheap Delta flights from Oakland to Ontario

Explore cheap flight options specifically provided by Delta for the route between Oakland and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.
Peruse some of the lowest-priced Delta flights we've found from Oakland to Ontario. It's recommended that users confirm their flight details before booking.
Fri 3/155:50 amOAK - ONT
1 stop17h 56mDelta
Mon 3/181:20 pmONT - OAK
1 stop27h 40mDelta
Deal found 2/13$314
Sat 3/161:15 pmOAK - ONT
1 stop8h 43mDelta
Mon 3/181:20 pmONT - OAK
1 stop10h 34mDelta
Deal found 2/15$354

Cheap Alaska Airlines flights from Oakland to Ontario

Explore cheap flight options specifically provided by Alaska Airlines for the route between Oakland and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.
Take a gander at the lowest prices we've found on Alaska Airlines flights from Oakland to Ontario. Deals are refreshing constantly so come back soon for more options.
Tue 3/196:00 amOAK - ONT
1 stop10h 37mAlaska Airlines
Wed 3/205:32 pmONT - OAK
1 stop6h 25mAlaska Airlines
Deal found 2/13$338
Wed 3/64:05 pmOAK - ONT
1 stop6h 54mAlaska Airlines
Sat 3/96:00 amONT - OAK
1 stop17h 29mAlaska Airlines
Deal found 2/14$343
Wed 4/246:00 amOAK - ONT
1 stop15h 28mAlaska Airlines
Sat 4/277:00 amONT - OAK
1 stop11h 15mAlaska Airlines
Deal found 2/14$346
Sat 4/1310:30 amOAK - ONT
1 stop7h 57mAlaska Airlines
Tue 4/166:00 amONT - OAK
1 stop8h 40mAlaska Airlines
Deal found 2/14$348
Fri 3/86:00 amOAK - ONT
1 stop26h 49mAlaska Airlines
Mon 3/1110:32 amONT - OAK
1 stop28h 38mAlaska Airlines
Deal found 2/14$350
Wed 3/64:05 pmOAK - ONT
1 stop6h 54mAlaska Airlines
Mon 3/1110:32 amONT - OAK
1 stop28h 38mAlaska Airlines
Deal found 2/14$351
Thu 3/76:00 amOAK - ONT
1 stop16h 59mAlaska Airlines
Sat 3/96:00 amONT - OAK
1 stop17h 29mAlaska Airlines
Deal found 2/14$352
Fri 3/86:00 amOAK - ONT
1 stop26h 49mAlaska Airlines
Mon 3/1110:32 amONT - OAK
2 stops8h 21mAlaska Airlines
Deal found 2/14$357
Wed 4/246:00 amOAK - ONT
2 stops15h 53mAlaska Airlines
Sat 4/277:00 amONT - OAK
1 stop11h 15mAlaska Airlines
Deal found 2/14$359

Cheap Oakland to Ontario flights in February & March 2024

Find cheap flight options from Oakland to Ontario specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,271,781 searches. Prices were last updated on February 16, 2024.
Check out some of the best flight deals from Oakland to Ontario in 2024. Check back soon for alternative fares.
Fri 3/15:00 amOAK - ONT
1 stop17h 45mMultiple Airlines
Wed 3/67:57 amONT - OAK
1 stop11h 33mMultiple Airlines
Deal found 2/14$205
Sat 3/1610:25 amOAK - ONT
1 stop10h 22mMultiple Airlines
Mon 3/183:35 pmONT - OAK
1 stop7h 42mMultiple Airlines
Deal found 2/15$234
Tue 2/278:50 pmOAK - ONT
1 stop10h 17mMultiple Airlines
Thu 2/291:57 pmONT - OAK
1 stop4h 21mMultiple Airlines
Deal found 2/15$239
Wed 2/288:50 pmOAK - ONT
1 stop10h 17mMultiple Airlines
Sat 3/21:57 pmONT - OAK
1 stop5h 34mMultiple Airlines
Deal found 2/14$240
Fri 3/15:00 amOAK - ONT
1 stop4h 05mMultiple Airlines
Wed 3/612:43 pmONT - OAK
2 stops10h 14mMultiple Airlines
Deal found 2/14$256
Tue 2/275:00 amOAK - ONT
2 stops11h 29mMultiple Airlines
Thu 2/291:57 pmONT - OAK
1 stop5h 34mMultiple Airlines
Deal found 2/15$279
Thu 3/145:15 amOAK - ONT
1 stop11h 23mMultiple Airlines
Sun 3/175:42 pmONT - OAK
1 stop5h 35mMultiple Airlines
Deal found 2/14$285
Fri 3/295:15 amOAK - ONT
1 stop26h 35mMultiple Airlines
Sun 3/319:41 pmONT - OAK
1 stop26h 35mMultiple Airlines
Deal found 2/14$290
Fri 3/86:00 amOAK - ONT
1 stop26h 49mAlaska Airlines
Tue 3/124:44 pmONT - OAK
1 stop6h 45mAlaska Airlines
Deal found 2/15$340

Oakland to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Oakland and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.
Check out some of the best flight deals from Oakland to Ontario in 2024. Check back soon for alternative fares.
Fri 3/15:00 amOAK - ONT
1 stop17h 45mMultiple Airlines
Wed 3/67:57 amONT - OAK
1 stop11h 33mMultiple Airlines
Deal found 2/14$205
Sat 3/1610:25 amOAK - ONT
1 stop10h 22mMultiple Airlines
Mon 3/183:35 pmONT - OAK
1 stop7h 42mMultiple Airlines
Deal found 2/15$234
Tue 2/278:50 pmOAK - ONT
1 stop10h 17mMultiple Airlines
Thu 2/291:57 pmONT - OAK
1 stop4h 21mMultiple Airlines
Deal found 2/15$239
Wed 2/288:50 pmOAK - ONT
1 stop10h 17mMultiple Airlines
Sat 3/21:57 pmONT - OAK
1 stop5h 34mMultiple Airlines
Deal found 2/14$240
Mon 4/15:15 amOAK - ONT
1 stop4h 53mMultiple Airlines
Fri 4/58:50 amONT - OAK
1 stop15h 26mMultiple Airlines
Deal found 2/14$251
Fri 3/15:00 amOAK - ONT
1 stop4h 05mMultiple Airlines
Wed 3/612:43 pmONT - OAK
2 stops10h 14mMultiple Airlines
Deal found 2/14$256
Tue 2/275:00 amOAK - ONT
2 stops11h 29mMultiple Airlines
Thu 2/291:57 pmONT - OAK
1 stop5h 34mMultiple Airlines
Deal found 2/15$279
Thu 3/145:15 amOAK - ONT
1 stop11h 23mMultiple Airlines
Sun 3/175:42 pmONT - OAK
1 stop5h 35mMultiple Airlines
Deal found 2/14$285
Fri 3/295:15 amOAK - ONT
1 stop26h 35mMultiple Airlines
Sun 3/319:41 pmONT - OAK
1 stop26h 35mMultiple Airlines
Deal found 2/14$290

Oakland to Ontario flights leaving soon

Find last-minute flight options from Oakland to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.
Users seeking a last-minute flight from Oakland to Ontario should consider booking one of these fares. To prevent any unwanted surprises, users should verify their flight info before booking.
Wed 2/216:40 amOAK - ONT
Nonstop1h 20mSouthwest
Wed 2/2110:45 amONT - OAK
1 stop8h 25mSouthwest
Deal found 2/15$349
Wed 2/211:55 pmOAK - ONT
Nonstop1h 20mSouthwest
Wed 2/217:10 pmONT - OAK
2 stops14h 50mSouthwest
Deal found 2/15$448
Wed 2/216:40 amOAK - ONT
Nonstop1h 20mSouthwest
Wed 2/218:00 pmONT - OAK
Nonstop1h 20mSouthwest
Deal found 2/15$491
Wed 2/215:00 amOAK - ONT
1 stop12h 00mMultiple Airlines
Sun 2/252:51 pmONT - OAK
1 stop4h 40mMultiple Airlines
Deal found 2/15$582
Sun 2/256:00 amOAK - ONT
1 stop26h 49mAlaska Airlines
Thu 2/296:00 amONT - OAK
1 stop17h 29mAlaska Airlines
Deal found 2/15$616
Tue 2/205:00 amOAK - ONT
2 stops11h 29mMultiple Airlines
Sun 2/252:51 pmONT - OAK
1 stop4h 40mMultiple Airlines
Deal found 2/15$618
Tue 2/208:50 pmOAK - ONT
1 stop10h 17mMultiple Airlines
Sun 2/252:51 pmONT - OAK
1 stop4h 40mMultiple Airlines
Deal found 2/15$639
Sat 2/246:00 amOAK - ONT
1 stop26h 49mAlaska Airlines
Wed 2/286:00 amONT - OAK
1 stop27h 44mAlaska Airlines
Deal found 2/15$646
Sun 2/256:00 amOAK - ONT
1 stop26h 49mAlaska Airlines
Thu 2/296:30 amONT - OAK
2 stops8h 40mAlaska Airlines
Deal found 2/15$651

One-way flights to Ontario from Oakland

Search for one-way flight options from Oakland to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.
Users in need of a one-way flight from Oakland to Ontario can choose from these deals. Those seeking round-trip flights from Oakland to Ontario should utilize the search form at the the top of the page.
Mon 5/138:19 pmOAK - ONT
1 stop25h 38mMultiple Airlines
Deal found 2/15$89
Fri 3/155:15 amOAK - ONT
1 stop6h 38mMultiple Airlines
Deal found 2/14$109
Sat 3/1610:25 amOAK - ONT
1 stop10h 22mMultiple Airlines
Deal found 2/14$136
Sun 3/315:15 amOAK - ONT
1 stop26h 35mMultiple Airlines
Deal found 2/14$142
Mon 5/135:50 amOAK - ONT
2 stops16h 20mMultiple Airlines
Deal found 2/15$151
Fri 3/158:46 pmOAK - ONT
2 stops15h 19mMultiple Airlines
Deal found 2/14$159
Sun 3/105:15 amOAK - ONT
2 stops13h 15mMultiple Airlines
Deal found 2/15$161
Tue 3/54:05 pmOAK - ONT
1 stop6h 54mAlaska Airlines
Deal found 2/13$162
Wed 3/66:00 amOAK - ONT
2 stops11h 05mAlaska Airlines
Deal found 2/13$167

Find flights from Oakland to Ontario within your budget

Customize your flight search to find flights from Oakland to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$140 - $343

Route

Depart

Return

Price

OaklandOntario

OAK - ONT

OAKONT

Oakland

Wed 3/13

1 stop6h 54m

Ontario

Wed 3/20

1 stop10h 30m

$140

OaklandOntario

OAK - ONT

OAKONT

Oakland

Fri 3/1

1 stop17h 45m

Ontario

Wed 3/6

1 stop11h 33m

$205

OaklandOntario

OAK - ONT

OAKONT

Oakland

Wed 3/13

1 stop6h 54m

Ontario

Wed 3/20

2 stops11h 24m

$215

OaklandOntario

OAK - ONT

OAKONT

Oakland

Wed 3/13

1 stop6h 54m

Ontario

Wed 3/20

2 stops11h 24m

$216

OaklandOntario

OAK - ONT

OAKONT

Oakland

Sat 3/16

1 stop10h 22m

Ontario

Mon 3/18

1 stop7h 42m

$234

OaklandOntario

OAK - ONT

OAKONT

Oakland

Tue 2/27

1 stop10h 17m

Ontario

Thu 2/29

1 stop4h 21m

$239

OaklandOntario

OAK - ONT

OAKONT

Oakland

Fri 3/15

1 stop17h 56m

Ontario

Mon 3/18

1 stop27h 40m

$314

OaklandOntario

OAK - ONT

OAKONT

Oakland

Tue 3/19

1 stop10h 37m

Ontario

Wed 3/20

1 stop6h 25m

$338

OaklandOntario

OAK - ONT

OAKONT

Oakland

Wed 3/6

1 stop6h 54m

Ontario

Sat 3/9

1 stop17h 29m

$343

Flights are sorted by cheapest first

Deals found on 2/14

When is the best time to book a flight from Oakland, California to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Oakland to Ontario. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from Oakland, California to Ontario, you should look to book at least 27 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

When is the cheapest time to fly from Oakland, California to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Oakland to Ontario. Price data was last updated on February 11, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Oakland, California to Ontario flight should consider departing on Sunday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Ontario by month

Plan your trip from Oakland to Ontario by taking into account the cheapest months to travel. The average price of a one-way flight from Oakland to Ontario is currently $142 while a round-trip flight costs $249. Price data was last updated on February 11, 2024.

Currently, October is the cheapest month in which you can book a flight from Oakland, California to Ontario (average of $237). Flying from Oakland, California to Ontario in June is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$271

February

$269

March

$291

April

$313

May

$292

June

$357

July

$328

August

$287

September

$258

October

$237

November

$268

December

$272

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated February 16, 2024.
Get a feel of what it's like to fly with Delta, Alaska Airlines and Southwest from Oakland to Ontario by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
1,413 reviews

Food

7.2

Entertainment

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The flight attendant Trace was very kind to us and took very good care of my father when he had an medical issue. Thank you Trace for all that you have done for us.

8.1
Very good
1,413 reviews
8.1
Very good
1,413 reviews

Food

7.2

Entertainment

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The flight attendant Trace was very kind to us and took very good care of my father when he had an medical issue. Thank you Trace for all that you have done for us.

7.9
Good
3,044 reviews
8.1
Very good
1,413 reviews

Food

7.2

Entertainment

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The flight attendant Trace was very kind to us and took very good care of my father when he had an medical issue. Thank you Trace for all that you have done for us.

7.2
Good
2,655 reviews
8.1
Very good
1,413 reviews

Food

7.2

Entertainment

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The flight attendant Trace was very kind to us and took very good care of my father when he had an medical issue. Thank you Trace for all that you have done for us.

6.5
Okay
537 reviews
8.1
Very good
1,413 reviews

Food

7.2

Entertainment

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

The flight attendant Trace was very kind to us and took very good care of my father when he had an medical issue. Thank you Trace for all that you have done for us.

Temperature and rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average temperature and rainfall totals by month.

LAX

Temperature

57.2 - 73.4 °F

Related info for your journey

Find useful and relevant information for your journey from Oakland to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from Oakland to Ontario?

If you book a flight from Oakland to Ontario, you will be flying from Oakland to Ontario. Flights to Ontario (ONT) from Oakland (OAK) take 4h 53m for a nonstop flight. There are 4 flights from Oakland to Ontario per day from 6 airlines.

Can I find flights from Oakland, California to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Oakland, California to Ontario for under $200. The cheapest flight booked recently is on Multiple Airlines for just $140, but on average you can expect to pay $256.

Are there last-minute flights available from Oakland, California to Ontario for under $400?

There are currently 20+ open flights from Oakland, California to Ontario within the next 7 days for less than $400.

What are the cheapest airlines flying from Oakland, California to Ontario round-trip?

Our cheapest airline available from Oakland, California to Ontario is Delta. Our recent data shows that you can find tickets from as low as $314 on this airline. An additional option worth looking into is Alaska Airlines, starting at $338.

What are the most popular airlines that fly from Oakland, California to Ontario?

What does OAK to ONT mean?

OAK and ONT are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. OAK to ONT refers to a flight route from Oakland Airport to Ontario Airport.

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Oakland to Ontario
See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Oakland to Ontario

Discover the top 6 airlines that operate flights from Oakland to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,271,781 searches. Data last updated February 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$39Average$117FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Alaska AirlinesCheapest$49Average$384FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$49Average$130FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapest$49Average$104FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Breeze AirwaysCheapest$78Average$123FlexibilityNo cancel feeOn-timeN/A
Search Breeze Airways flights
United AirlinesCheapest$98Average$262FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Search flights from Oakland to Ontario by cabin class

Find flights from Oakland to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Oakland to Ontario

Find hourly flight availability from Oakland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 16, 2024.
10%of flight departuresEarly morningMidnight to 6 am
40%of flight departuresMorning6 am to noon
35%of flight departuresAfternoonNoon to 6 pm
15%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Oakland to Ontario

Explore weekly flight availability from Oakland to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 16, 2024.
Sunday4daily flights
Monday5daily flights
Tuesday3daily flights
Wednesday4daily flights
Thursday5daily flights
Friday5daily flights
Saturday3daily flights

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Oakland to Ontario?

When you search for this flight from Oakland to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Oakland to Ontario?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Oakland to Ontario.

Can Cheapflights find flights from Oakland to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from Oakland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Oakland to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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