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San Luis Obispo

$178+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SBP
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$279
(United Airlines)

One-way from

$178
(Alaska Airlines)

Popular in

September

Cheapest in

August

Average price

$244
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. 2% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. 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 8/191:42 pmONT - SBP
1 stop6h 10mUnited Airlines
Tue 8/265:15 amSBP - ONT
1 stop7h 17mUnited Airlines
Deal found 7/29$279
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 8/206:00 amONT - SBP
1 stop11h 37mAlaska Airlines
Fri 8/226:29 pmSBP - ONT
1 stop16h 15mAlaska Airlines
Deal found 7/29$322
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:17 amONT - SBP
1 stop12h 19mAmerican Airlines
Fri 8/224:57 pmSBP - ONT
2 stops23h 27mAmerican Airlines
Deal found 7/29$1,214

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 July 31, 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 8/19

1:42 pm-7:52 pm

1 stop6h 10m

San Luis Obispo County

Tue 8/26

5:15 am-12:32 pm

1 stop7h 17m

$279

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 8/20

6:00 am-5:37 pm

1 stop11h 37m

San Luis Obispo County

Fri 8/22

6:29 pm-10:44 am

1 stop16h 15m

$322

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 8/20

6:17 am-6:36 pm

1 stop12h 19m

San Luis Obispo County

Fri 8/22

4:57 pm-4:24 pm

2 stops23h 27m

$1,214

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Fri 10/31

4:11 pm-7:01 pm

1 stop26h 50m

$178

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Tue 8/19

1:42 pm-5:32 pm

1 stop3h 50m

$180

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Sat 8/30

6:00 am-4:43 pm

2 stops10h 43m

$432

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Thu 9/11

7:16 pm-4:17 pm

2 stops21h 01m

$934

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 $512). 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 July 31, 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 July 31, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, United Airlines, and American 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from Ontario to San Luis Obispo round-trip?

    Cheapflights users have booked flights from Ontario to San Luis Obispo round-trip from $279. Other airlines that can offer you cheap pricing are Alaska Airlines, from $322, and American Airlines, from $1,214.

  • What are the cheapest airlines to fly from Ontario to San Luis Obispo one-way?

    The cheapest airlines for a one-way flight from Ontario to San Luis Obispo are Alaska Airlines ($178), United Airlines ($180), and American Airlines ($934).

  • 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 $512). 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$233Average$288FlexibilityNo cancel feeOn-time69%

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