ONT - SBP

$264 Find Cheap Flights from Ontario to San Luis Obispo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to San Luis Obispo departing on 6/14. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Luis Obispo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to San Luis Obispo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to San Luis Obispo, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$349
United Airlines
Sat 6/20Sat 6/27
ONT - SBP • 1 stop
Cheapest one-way
$264
United Airlines
Sun 6/14
ONT - SBP • 1 stop
Top airlines
United Airlines
Cheapest • from $349 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and San Luis Obispo. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 100% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Luis Obispo!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to San Luis Obispo (ONT-SBP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to San Luis Obispo that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to San Luis Obispo

Sat, Jun 20 - Sat, Jun 27
United Airlines Logo
6:00 am - 11:38 am
ONT
-
SBP
5h 38m
1 stop
United Airlines Logo
5:00 am - 12:47 pm
SBP
-
ONT
7h 47m
1 stop
$349United Airlines
Wed, Jun 10 - Wed, Jun 17
United Airlines Logo
6:39 pm - 10:12 pm
ONT
-
SBP
3h 33m
1 stop
United Airlines Logo
6:25 am - 12:12 pm
SBP
-
ONT
5h 47m
1 stop
$384United Airlines
Fri, Jul 17 - Sun, Jul 19
United Airlines Logo
6:00 am - 11:38 am
ONT
-
SBP
5h 38m
1 stop
United Airlines Logo
7:04 pm - 10:37 pm
SBP
-
ONT
3h 33m
1 stop
$433United Airlines
Fri, Jul 17 - Sun, Jul 19
United Airlines Logo
6:00 am - 11:38 am
ONT
-
SBP
5h 38m
1 stop
United Airlines Logo
7:04 pm - 10:37 pm
SBP
-
ONT
3h 33m
1 stop
$446United Airlines
Fri, Jun 5 - Sun, Jun 7
United Airlines Logo
5:00 am - 1:09 pm
ONT
-
SBP
8h 09m
1 stop
United Airlines Logo
6:25 am - 12:12 pm
SBP
-
ONT
5h 47m
1 stop
$479United Airlines
Tue, Jun 16 - Thu, Jun 18
United Airlines Logo
1:18 pm - 8:50 pm
ONT
-
SBP
7h 32m
1 stop
United Airlines Logo
6:25 am - 12:12 pm
SBP
-
ONT
5h 47m
1 stop
$527United Airlines
Mon, Jun 15 - Fri, Jun 19
United Airlines Logo
1:50 pm - 7:53 pm
ONT
-
SBP
6h 03m
1 stop
United Airlines Logo
6:25 am - 12:12 pm
SBP
-
ONT
5h 47m
1 stop
$569United Airlines
Thu, Jul 16 - Mon, Jul 20
Alaska Airlines Logo
10:54 am - 11:45 pm
ONT
-
SBP
12h 51m
1 stop
Alaska Airlines Logo
7:34 pm - 1:09 pm
SBP
-
ONT
17h 35m
1 stop
$588Alaska Airlines
Mon, Jun 15 - Fri, Jun 19
Alaska Airlines Logo
7:00 am - 11:45 pm
ONT
-
SBP
16h 45m
1 stop
Alaska Airlines Logo
5:57 pm - 6:03 pm
SBP
-
ONT
24h 06m
2 stops
$640Alaska Airlines
Thu, Jul 16 - Mon, Jul 20
Alaska Airlines Logo
10:54 am - 11:45 pm
ONT
-
SBP
12h 51m
1 stop
Alaska Airlines Logo
5:50 pm - 3:38 pm
SBP
-
ONT
21h 48m
2 stops
$645Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to San Luis Obispo flights

Get data-powered insights and trends into flights from Ontario to San Luis Obispo to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to San Luis Obispo, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to San Luis Obispo is November, where tickets cost $0 (return) on average. On the other hand, the most expensive months are April and May, where the average cost of round-trip tickets is $658 and $577 respectively.

Find deals

Good to know

Low seasonDecember
Cheapest flight$264
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Ontario to San Luis Obispo

When to book flights from Ontario to San Luis Obispo

Are your dates flexible? Find out the best times to travel from Ontario to San Luis Obispo based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to San Luis Obispo

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

    In the last 3 days, the lowest price for a flight from Ontario to San Luis Obispo was $264 for a one-way ticket and $349 for a round-trip.

  • Do I need a passport to fly between Ontario and San Luis Obispo?

    A passport is not required to fly from Ontario to San Luis Obispo.

  • Which aircraft models fly most regularly from Ontario to San Luis Obispo?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to San Luis Obispo?

    Star Alliance is the only airline alliance operating flights between Ontario and San Luis Obispo.

  • How does KAYAK find such low prices on flights from Ontario to San Luis Obispo?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Luis Obispo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Luis Obispo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Luis Obispo from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to San Luis Obispo?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Luis Obispo with an airline and back to Ontario with another airline. Booking your flights between Ontario and SBP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Luis Obispo?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Luis Obispo from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to San Luis Obispo

 
See real verified KAYAK customer reviews for airlines flying from Ontario to San Luis Obispo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to San Luis Obispo? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9749 reviews
7.3Comfort
7.1Entertainment
8.1Crew
7.7Boarding
6.6Food
Airline reviews

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

2.0 MediocreAnonymous, May 2026
TPA - SFO
Read more United Airlines reviews

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Everything you need to know for your flight from Ontario to San Luis Obispo

Information on your arrival and departure airports

Ontario (ONT)
San Luis Obispo (SBP)