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 $263. Other airlines that can offer you cheap pricing are Alaska Airlines, from $469, and American Airlines, from $1,583. United Airlines is priced at 37% lower than the current average price of a flight leaving 3 months from now.

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 United Airlines ($132), Alaska Airlines ($187), and American Airlines ($510).

What is the cheapest day to fly from Ontario to San Luis Obispo?

Travelers seeking maximum savings on their Ontario to San Luis Obispo flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Users have found that flying from Ontario to San Luis Obispo on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Ontario to San Luis Obispo?

Users have found that booking a flight from Ontario to San Luis Obispo at least 40 days early can save you up to 88% on average compared to booking a flight this week. If booking 40 days before your flight isn’t an option for you, users have found flights from Ontario to San Luis Obispo for as little as $294 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $543 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to San Luis Obispo?

Our data shows that August tends to be the cheapest month to fly to San Luis Obispo from Ontario. Users have commonly found prices around $287 for the month, but tickets can be as low as $178. Due to multiple factors, prepare for potentially higher prices in September.

Most accurate provider : When it comes to deals on Ontario-San Luis Obispo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San Luis Obispo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-San Luis Obispo flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-San Luis Obispo 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-San Luis Obispo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$132+ Save on Flights from Ontario to San Luis Obispo

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1. Tell us where you want to go

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Cheap flight deals from Ontario to San Luis Obispo

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$263 (United Airlines)
One-way from	$132 (United Airlines)
Popular in	May
Cheapest in	December
Average price	$337

Provider with most accurate pricing for Ontario-San Luis Obispo County flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-San Luis Obispo County flights.

Search Deals

From Ontario to San Luis Obispo County

Search Deals

One-way flight from Ontario to San Luis Obispo County

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($89 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 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 February 20, 2025.

Wed 3/196:00 amONT - SBP

1 stop3h 49mUnited Airlines

Wed 3/265:00 amSBP - ONT

1 stop7h 44mUnited Airlines

Deal found 2/18

$263

Sat 3/226:00 amONT - SBP

1 stop12h 39mAlaska Airlines

Sun 3/307:31 pmSBP - ONT

1 stop28h 28mAlaska Airlines

Deal found 2/19

$469

Wed 3/196:00 amONT - SBP

2 stops16h 33mMultiple Airlines

Wed 3/266:00 amSBP - ONT

2 stops16h 45mMultiple Airlines

Deal found 2/18

$765

Tue 4/86:15 amONT - SBP

2 stops16h 18mAmerican Airlines

Thu 4/1012:51 pmSBP - ONT

1 stop20h 08mAmerican Airlines

Deal found 2/19

$1,583

Best flights from Ontario to San Luis Obispo
Discover carefully curated flight deals from Ontario to San Luis Obispo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Wed 3/196:00 amONT - SBP

1 stop3h 49mUnited Airlines

Wed 3/265:00 amSBP - ONT

1 stop7h 44mUnited Airlines

Deal found 2/18

$263

Sat 3/226:00 amONT - SBP

1 stop12h 39mAlaska Airlines

Sun 3/307:31 pmSBP - ONT

1 stop28h 28mAlaska Airlines

Deal found 2/19

$469

Wed 3/196:00 amONT - SBP

2 stops16h 33mMultiple Airlines

Wed 3/266:00 amSBP - ONT

2 stops16h 45mMultiple Airlines

Deal found 2/18

$765

Tue 4/86:15 amONT - SBP

2 stops16h 18mAmerican Airlines

Thu 4/1012:51 pmSBP - ONT

1 stop20h 08mAmerican Airlines

Deal found 2/19

$1,583

Last-minute flights from Ontario to San Luis Obispo
Discover last-minute flight deals from Ontario to San Luis Obispo. Data last updated February 20, 2025 and is based on user searches.

Thu 2/2010:05 amONT - SBP

1 stop8h 31mAmerican Airlines

Thu 2/276:20 amSBP - ONT

2 stops12h 06mAmerican Airlines

Deal found 2/19

$1,783

Fri 2/281:44 pmONT - SBP

1 stop7h 27mUnited Airlines

Sun 3/25:00 amSBP - ONT

1 stop7h 42mUnited Airlines

Deal found 2/19

$495

Wed 3/196:00 amONT - SBP

1 stop3h 49mUnited Airlines

Wed 3/265:00 amSBP - ONT

1 stop7h 44mUnited Airlines

Deal found 2/18

$263

Wed 3/196:00 amONT - SBP

2 stops16h 33mMultiple Airlines

Wed 3/266:00 amSBP - ONT

2 stops16h 45mMultiple Airlines

Deal found 2/18

$765

Sat 3/226:00 amONT - SBP

1 stop12h 39mAlaska Airlines

Sun 3/307:31 pmSBP - ONT

1 stop28h 28mAlaska Airlines

Deal found 2/19

$469

One-way flights from Ontario to San Luis Obispo
Search for one-way flight options from Ontario to San Luis Obispo. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Tue 4/16:00 amONT - SBP

1 stop3h 57mUnited Airlines

Deal found 2/19

$132

Fri 3/147:14 pmONT - SBP

1 stop23h 13mAlaska Airlines

Deal found 2/19

$187

Wed 3/56:00 amONT - SBP

2 stops15h 23mMultiple Airlines

Deal found 2/18

$368

Mon 3/317:35 pmONT - SBP

1 stop16h 43mAmerican Airlines

Deal found 2/19

$510

Find flights from Ontario to San Luis Obispo within your budget

Fly from

Fly to

Route

Depart

Return

Price

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 3/19

6:00 am-9:49 am

1 stop3h 49m

San Luis Obispo County

Wed 3/26

5:00 am-12:44 pm

1 stop7h 44m

$263

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Sat 3/22

6:00 am-6:39 pm

1 stop12h 39m

San Luis Obispo County

Sun 3/30

7:31 pm-11:59 pm

1 stop28h 28m

$469

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 3/19

6:00 am-10:33 pm

2 stops16h 33m

San Luis Obispo County

Wed 3/26

6:00 am-10:45 pm

2 stops16h 45m

$765

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Tue 4/8

6:15 am-10:33 pm

2 stops16h 18m

San Luis Obispo County

Thu 4/10

12:51 pm-8:59 am

1 stop20h 08m

$1,583

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Tue 4/1

6:00 am-9:57 am

1 stop3h 57m

$132

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Fri 3/14

7:14 pm-6:27 pm

1 stop23h 13m

$187

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Wed 3/5

6:00 am-9:23 pm

2 stops15h 23m

$368

OntarioSan Luis Obispo

ONT - SBP

ONTSBP

Ontario

Mon 3/31

7:35 pm-12:18 pm

1 stop16h 43m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Ontario to San Luis Obispo

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to San Luis Obispo in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-San Luis Obispo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San Luis Obispo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-San Luis Obispo flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-San Luis Obispo 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-San Luis Obispo 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 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.

Travel insights for flights from Ontario to San Luis Obispo

Get recent, data-driven insights about flights from Ontario to San Luis Obispo including ideal travel times, pricing trends, and more.

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 $594). 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?

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.

Rainfall in San Luis Obispo by month

In terms of precipitation, rainfall in San Luis Obispo ranges from 0.0 - 4.0 inches per month. December is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit San Luis Obispo when rainfall is around 0.0 in.

Temperature in San Luis Obispo by month

If weather is an important factor for your trip to San Luis Obispo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Luis Obispo

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Alaska Airlines

8.0

Very good

9,692 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

United Airlines

7.4

Good

8,766 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

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 $263. Other airlines that can offer you cheap pricing are Alaska Airlines, from $469, and American Airlines, from $1,583. United Airlines is priced at 37% lower than the current average price of a flight leaving 3 months from now.
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 United Airlines ($132), Alaska Airlines ($187), and American Airlines ($510).
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 $594). 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

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Avila Beach

San Simeon

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Top airline flying from Ontario to San Luis Obispo

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$234	Average$379	FlexibilityNo cancel fee	On-time69%

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$132+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to San Luis Obispo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to San Luis Obispo

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to San Luis Obispo

Cheapest flights from Ontario to San Luis ObispoExplore 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 February 20, 2025.

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 February 20, 2025.

Find flights from Ontario to San Luis Obispo within your budget

Compare providers for flights from Ontario to San Luis Obispo

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 San Luis Obispo in February.

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.

Travel insights for flights from Ontario to San Luis Obispo

Get recent, data-driven insights about flights from Ontario to San Luis Obispo including ideal travel times, pricing trends, and more.

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

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 February 20, 2025.

Rainfall in San Luis Obispo by month

Plan your trip to San Luis Obispo by taking into account the average rainfall totals by month.

Temperature in San Luis Obispo by month

Plan your trip to San Luis Obispo by taking into account the average temperature totals by month.

Reviews of airlines servicing San Luis Obispo

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?

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

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

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

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

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

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Alternative routes for Ontario to San Luis Obispo

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Top airline flying from Ontario to San Luis Obispo

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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 February 20, 2025.