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San Luis Obispo

$188+ Cheap flights from Ontario to San Luis Obispo (ONT - SBP)

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SBP
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Ontario to San Luis Obispo

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to San Luis Obispo (SBP). 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 September 16, 2025.

Round-trip from

$229
(United Airlines)

One-way from

$188
(United Airlines)

Popular in

September

Cheapest in

July

Average price

$453
From Ontario to San Luis Obispo County
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One-way flight from Ontario to San Luis Obispo County
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Highest demand for flights based on searches. 6% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to San Luis Obispo

Cheapest flights from Ontario to San Luis Obispo
Explore the most affordable flight options available from Ontario to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:36 pmONT - SBP
1 stop3h 38mUnited Airlines
Sat 10/48:34 amSBP - ONT
1 stop3h 39mUnited Airlines
Deal found 9/15$229
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amONT - SBP
1 stop6h 19mUnited Airlines
Sun 11/236:25 pmSBP - ONT
1 stop4h 26mUnited Airlines
Deal found 9/14$249
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:36 pmONT - SBP
1 stop3h 38mUnited Airlines
Tue 10/286:25 pmSBP - ONT
1 stop4h 26mUnited Airlines
Deal found 9/14$284
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:38 pmONT - SBP
1 stop3h 27mUnited Airlines
Mon 11/246:25 pmSBP - ONT
1 stop4h 26mUnited Airlines
Deal found 9/15$319
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/21:15 pmONT - SBP
1 stop7h 37mUnited Airlines
Thu 10/96:22 pmSBP - ONT
1 stop4h 30mUnited Airlines
Deal found 9/15$354
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:05 amONT - SBP
1 stop8h 23mUnited Airlines
Fri 10/36:22 pmSBP - ONT
1 stop23h 27mUnited Airlines
Deal found 9/14$372
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/110:59 amONT - SBP
1 stop5h 48mAlaska Airlines
Sat 11/17:56 pmSBP - ONT
1 stop16h 09mAlaska Airlines
Deal found 9/15$406
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:36 pmONT - SBP
1 stop15h 29mUnited Airlines
Mon 10/66:22 pmSBP - ONT
1 stop4h 30mUnited Airlines
Deal found 9/14$427
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:27 pmONT - SBP
1 stop26h 25mUnited Airlines
Sun 10/266:35 amSBP - ONT
1 stop16h 16mUnited Airlines
Deal found 9/14$438
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:36 pmONT - SBP
1 stop17h 40mUnited Airlines
Sun 10/58:34 amSBP - ONT
1 stop3h 39mUnited Airlines
Deal found 9/14$448
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:10 amONT - SBP
1 stop8h 26mUnited Airlines
Sun 9/215:15 amSBP - ONT
1 stop7h 17mUnited Airlines
Deal found 9/15$474
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/241:42 pmONT - SBP
1 stop22h 36mUnited Airlines
Fri 9/266:22 pmSBP - ONT
1 stop17h 51mUnited Airlines
Deal found 9/15$475

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to San Luis Obispo 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Ontario to San Luis Obispo that are best for you.

Fly from

Ontario

Fly to

San Luis Obispo

Route

Depart

Return

Price

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Tue 9/30

6:36 pm-10:14 pm

1 stop3h 38m

San Luis Obispo County

Sat 10/4

8:34 am-12:13 pm

1 stop3h 39m

$229

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 11/19

6:00 am-12:19 pm

1 stop6h 19m

San Luis Obispo County

Sun 11/23

6:25 pm-10:51 pm

1 stop4h 26m

$249

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Sat 3/7

6:00 am-9:49 am

1 stop3h 49m

San Luis Obispo County

Tue 3/10

5:15 am-12:33 pm

1 stop7h 18m

$284

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 10/22

6:36 pm-10:14 pm

1 stop3h 38m

San Luis Obispo County

Tue 10/28

6:25 pm-10:51 pm

1 stop4h 26m

$284

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Thu 11/20

6:38 pm-10:05 pm

1 stop3h 27m

San Luis Obispo County

Mon 11/24

6:25 pm-10:51 pm

1 stop4h 26m

$319

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Thu 10/2

1:15 pm-8:52 pm

1 stop7h 37m

San Luis Obispo County

Thu 10/9

6:22 pm-10:52 pm

1 stop4h 30m

$354

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Mon 9/29

5:05 am-1:28 pm

1 stop8h 23m

San Luis Obispo County

Fri 10/3

6:22 pm-5:49 pm

1 stop23h 27m

$372

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Sat 11/1

10:59 am-4:47 pm

1 stop5h 48m

San Luis Obispo County

Sat 11/1

7:56 pm-12:05 pm

1 stop16h 09m

$406

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Fri 10/3

6:36 pm-10:05 am

1 stop15h 29m

San Luis Obispo County

Mon 10/6

6:22 pm-10:52 pm

1 stop4h 30m

$427

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Fri 10/24

6:27 pm-8:52 pm

1 stop26h 25m

San Luis Obispo County

Sun 10/26

6:35 am-10:51 pm

1 stop16h 16m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 20 results
1
2

Best time to book a flight from Ontario to San Luis Obispo

Have a flexible travel schedule? Discover the best time to fly to San Luis Obispo from Ontario with our price prediction graph.
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 San Luis Obispo

What is the cheapest month to book a flight from Ontario to San Luis Obispo?

Currently, January is the cheapest month in which you can book a flight from Ontario to San Luis Obispo (average of $374). Flying from Ontario to San Luis Obispo in June is currently the most expensive (average of $511). 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 SBP?

Find hourly flight availability from Ontario to San Luis Obispo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s typically best to fly out from Ontario to San Luis Obispo in the morning. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing San Luis Obispo

Get insights into the airlines that provide service to San Luis Obispo. 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 San Luis Obispo. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with United Airlines from Ontario to San Luis Obispo 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.
United Airlines
7.4
Good
8,929 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

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

  • How long is the flight from Ontario to San Luis Obispo?

    For as low as $229, United Airlines can have you in San Luis Obispo from Ontario in 3h 38m. Airlines will cover a distance of 191 mi.

  • What is the cheapest airline to fly from Ontario to San Luis Obispo round-trip?

    Cheapflights users have booked flights from Ontario to San Luis Obispo round-trip from $233.

  • Can I find deals for flights from Ontario to San Luis Obispo that include hotel bookings?

    Yes. In addition to deals on Ontario to San Luis Obispo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to San Luis Obispo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Luis Obispo.

  • Can I find deals for business class flights from Ontario to San Luis Obispo?

    Yes. Cheapflights offers flight deals from Ontario to San Luis Obispo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to San Luis Obispo?

    Currently, January is the cheapest month in which you can book a flight from Ontario to San Luis Obispo (average of $374). Flying from Ontario to San Luis Obispo in June is currently the most expensive (average of $511). 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.

See more FAQs

Traveling to a place near San Luis Obispo?

Book flights to San Luis Obispo if you plan to visit one of these locations
Morro Bay
Avila Beach
Arroyo Grande
San Simeon

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Top airline flying from Ontario to San Luis Obispo

Discover the top airline that operate flights from Ontario to San Luis Obispo. 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 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$233Average$331FlexibilityNo cancel feeOn-time69%

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