$34+ Cheap flights from Ontario to Oakland, CA (ONT - OAK)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OAK
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Oakland with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Ontario to Oakland are usually found in September or December, booked 70 days in advance, depart on a Saturday or Thursday and return on a Thursday
Cheap flight deals from Ontario to Oakland
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to OaklandExplore the most affordable flight options available from Ontario to Oakland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Ontario to Oakland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This CheapOair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:37 pm -
Nonstop1h 20m
Tue 12/112:28 pm -
1 stop24h 11m
Deal found 10/25![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:00 pm -
1 stop21h 33m
Sat 12/512:28 pm -
1 stop6h 03m
Deal found 10/22![Frontier logo]()
$89
This CheapOair deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:24 pm -
Nonstop1h 20m
Mon 11/3011:24 am -
1 stop25h 15m
Deal found 10/24![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:35 pm -
1 stop12h 48m
Mon 11/165:55 pm -
1 stop15h 45m
Deal found 10/22![Frontier logo]()
$101
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:43 pm -
Nonstop1h 20m
Mon 11/3011:24 am -
1 stop25h 15m
Deal found 10/23![Frontier logo]()
$104
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:00 am -
1 stop3h 33m
Fri 12/412:28 pm -
1 stop23h 23m
Deal found 10/22![Frontier logo]()
$110
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:00 am -
1 stop3h 33m
Sun 12/612:28 pm -
1 stop23h 23m
Deal found 10/23![Frontier logo]()
$113
This CheapOair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:00 pm -
1 stop21h 33m
Mon 12/712:28 pm -
1 stop23h 23m
Deal found 10/25![Frontier logo]()
$119
Best flights from Ontario to OaklandDiscover carefully curated flight deals from Ontario to Oakland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Ontario to Oakland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:20 pm -
Nonstop1h 20m
Sat 11/145:40 pm -
Nonstop1h 25m
Deal found 10/22![Southwest logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/317:00 am -
2 stops26h 17m
Sun 2/78:04 am -
1 stop11h 58m
Deal found 10/20![Alaska Airlines logo]()
$381
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:05 pm -
Nonstop1h 20m
Thu 12/38:00 pm -
Nonstop1h 25m
Deal found 10/20![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:30 pm -
Nonstop1h 25m
Sun 12/207:05 pm -
1 stop4h 00m
Deal found 10/20![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1811:55 am -
Nonstop1h 20m
Sun 12/207:05 pm -
1 stop4h 00m
Deal found 10/20![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/77:40 am -
2 stops6h 00m
Sun 1/107:15 am -
Nonstop1h 20m
Deal found 10/22![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:45 pm -
1 stop7h 55m
Sat 11/146:25 am -
2 stops6h 10m
Deal found 10/20![Southwest logo]()
$259
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:55 pm -
Nonstop1h 30m
Sun 12/276:00 am -
Nonstop1h 25m
Deal found 10/23![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:55 pm -
Nonstop1h 30m
Sun 11/221:25 pm -
2 stops5h 05m
Deal found 10/21![Southwest logo]()
$318
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:50 pm -
2 stops7h 00m
Mon 11/309:55 pm -
Nonstop1h 35m
Deal found 10/22![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:00 am -
1 stop6h 45m
Wed 11/118:00 pm -
Nonstop1h 25m
Deal found 10/23![Southwest logo]()
$353
Last-minute flights from Ontario to OaklandDiscover last-minute flight deals from Ontario to Oakland. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Oakland. Data last updated October 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:35 pm -
1 stop12h 48m
Mon 11/165:55 pm -
1 stop15h 45m
Deal found 10/22![Frontier logo]()
$101
This Cheapflightsfares deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:35 am -
1 stop25h 18m
Sun 11/228:35 pm -
Nonstop1h 17m
Deal found 10/22![Frontier logo]()
$124
This CheapOair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:37 pm -
Nonstop1h 20m
Tue 12/112:28 pm -
1 stop24h 11m
Deal found 10/25![Frontier logo]()
$86
This Frontier deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:37 pm -
Nonstop1h 20m
Wed 12/212:28 pm -
1 stop5h 43m
Deal found 10/25![Frontier logo]()
$123
This FlightHub deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:01 pm -
1 stop5h 56m
Sun 11/228:35 pm -
Nonstop1h 17m
Deal found 10/21![Frontier logo]()
$129
This CheapOair deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:24 pm -
Nonstop1h 20m
Mon 11/3011:24 am -
1 stop25h 15m
Deal found 10/24![Frontier logo]()
$91
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:01 pm -
1 stop20h 28m
Mon 11/3011:24 am -
1 stop25h 15m
Deal found 10/23![Frontier logo]()
$122
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:43 pm -
Nonstop1h 20m
Mon 11/3011:24 am -
1 stop25h 15m
Deal found 10/23![Frontier logo]()
$104
One-way flights from Ontario to OaklandSearch for one-way flight options from Ontario to Oakland. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Ontario to Oakland. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This CheapOair deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:37 pm -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$34
This Trip.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:00 pm -
1 stop21h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$41
This Trip.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:35 am -
1 stop25h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$46
This Trip.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2910:48 pm -
1 stop22h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$48
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/244:13 pm -
1 stop18h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$49
This Trip.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:01 pm -
1 stop20h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$51
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:07 pm -
1 stop23h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$56
This Trip.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:35 pm -
1 stop15h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:35 pm -
1 stop12h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/224:13 pm -
1 stop18h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$61
Find flight deals from Ontario to Oakland
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Oakland (OAK). 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 October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $86 (CheapOair) |
One-way from | $34 (CheapOair) |
Popular in | July |
Cheapest in | September |
Average price | $299 |
Good round-trip deal | $228 or less |
Good one-way deal | $150 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Oakland 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 7,457,451 searches. Data last updated October 25, 2026.
Use the filters below to find and compare flights from Ontario to Oakland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Mon 11/16
8:35 pm-11:53 am
1 stop15h 18m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$68
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Fri 12/25
8:40 am-3:15 pm
2 stops6h 35m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$94
Quickest round-trip
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Fri 1/1
10:25 am-11:45 am
Nonstop1h 20m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Fri 11/27
5:45 am-7:10 am
Nonstop1h 25m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Mon 11/23
8:30 pm-9:55 pm
Nonstop1h 25m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Wed 1/6
7:10 am-5:52 pm
2 stops10h 42m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$192
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Sun 1/31
7:00 am-4:17 pm
2 stops9h 17m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$215
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Sun 12/6
6:00 am-7:39 pm
2 stops13h 39m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$220
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Sun 1/3
5:05 pm-6:25 pm
Nonstop1h 20m
Oakland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$220
OntarioOakland
ONT Ontario - OAK Oakland
ONTOAK
Ontario
Sat 11/14
12:20 pm-1:40 pm
Nonstop1h 20m
Oakland
Sat 11/14
5:40 pm-7:05 pm
Nonstop1h 25m
$227
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Ontario to Oakland
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Oakland in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Oakland, California flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Oakland, California flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Oakland, California flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Oakland, California flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Oakland, California flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Oakland
Have a flexible travel schedule? Discover the best time to fly to Oakland from Ontario with our price prediction graph.
ONT-OAK
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Oakland
How far ahead should I book a flight from Ontario to Oakland, California?
The price you pay for your flight from Ontario to Oakland, California may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Ontario to Oakland, California?
Currently, September is the cheapest month in which you can book a flight from Ontario to Oakland, California (average of $248). Flying from Ontario to Oakland, California in July is currently the most expensive (average of $349). 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.
What is the cheapest time of day to fly from ONT to OAK?
Find hourly flight availability from Ontario to Oakland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 25, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 25% on flights from Ontario to Oakland, California by exploring options for tickets at noon.
The best insider tips for Ontario to Oakland flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Ontario to Oakland trip
Our travel experts
Reviews of airlines servicing Oakland
Get insights into the airlines that provide service to Oakland. 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 Oakland. Reviews last updated October 25, 2026.
Peruse reviews from past customers who have flown with Southwest and Frontier from Ontario to Oakland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Comfort
8.0
Entertainment
7.4
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Related info for your journey
Find useful and relevant information for your journey from Ontario to Oakland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to Oakland
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Complete your trip
Complete your trip to Oakland by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Ontario to Oakland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Oakland
Explore flights to Oakland departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
Ontario and Oakland flights
Browse other Ontario and Oakland flight options. Last updated on October 25, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Ontario to Oakland
Discover the top 2 airlines that operate flights from Ontario to Oakland. 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 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$46 | Average$188 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$200 | Average$309 | FlexibilityNo cancel fee | On-time63% |