Is Alaska Airlines the cheapest airline to fly with from Ontario to San Francisco?

With an average price of $187 return, Alaska Airlines is not the cheapest airline to fly from Ontario to San Francisco with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $105 on average.

Does Alaska Airlines fly direct to San Francisco from Ontario?

No, Alaska Airlines does not fly the route directly.

What’s the cheapest day of the week to fly from Ontario to San Francisco with Alaska Airlines?

On average, the cheapest day of the week to fly from Ontario to San Francisco with Alaska Airlines is Friday, when prices are around $29. The most expensive day is generally Thursday, where the average price is around $101.

$112 Cheap Alaska Airlines Flights from Ontario to San Francisco

ONT - SFO

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Flight Deals

Cheap Alaska Airlines Flight Deals from Ontario to San Francisco

Here are some of the best deals found on KAYAK recently from Alaska Airlines for round-trip flights from Ontario to San Francisco 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.

Round-trip

One-way

Last minute

Recent round-trip Alaska Airlines flight deals from Ontario to San Francisco

mar., janv. 20 - sam., janv. 24

7:56 pm - 9:16 am

ONT

SFO

13h 20m1 stop

7:00 am - 5:03 pm

SFO

ONT

10h 03m2 stops

$248Alaska Airlines

ven., janv. 9 - lun., janv. 12

4:03 pm - 8:11 am

ONT

SFO

16h 08m1 stop

7:40 pm - 1:06 pm

SFO

ONT

17h 26m2 stops

$249Alaska Airlines

mer., janv. 21 - lun., janv. 26

5:59 pm - 10:42 am

ONT

SFO

16h 43m2 stops

6:18 pm - 1:06 pm

SFO

ONT

18h 48m2 stops

$253Alaska Airlines

mer., janv. 21 - lun., janv. 26

7:56 pm - 9:16 am

ONT

SFO

13h 20m1 stop

4:46 pm - 1:06 pm

SFO

ONT

20h 20m2 stops

$258Alaska Airlines

mar., janv. 20 - jeu., janv. 22

7:56 pm - 9:16 am

ONT

SFO

13h 20m1 stop

7:00 am - 5:03 pm

SFO

ONT

10h 03m2 stops

$259Alaska Airlines

ven., janv. 23 - lun., janv. 26

1:46 pm - 11:03 pm

ONT

SFO

9h 17m2 stops

6:18 pm - 1:06 pm

SFO

ONT

18h 48m2 stops

$264Alaska Airlines

mar., janv. 6 - mar., janv. 13

7:00 am - 4:25 pm

ONT

SFO

9h 25m1 stop

6:18 pm - 1:06 pm

SFO

ONT

18h 48m2 stops

$266Alaska Airlines

mar., janv. 27 - ven., janv. 30

4:03 pm - 9:11 am

ONT

SFO

17h 08m2 stops

7:00 am - 11:56 pm

SFO

ONT

16h 56m1 stop

$267Alaska Airlines

sam., janv. 17 - sam., janv. 24

4:03 pm - 9:11 am

ONT

SFO

17h 08m2 stops

7:00 am - 5:03 pm

SFO

ONT

10h 03m2 stops

$268Alaska Airlines

sam., févr. 7 - dim., févr. 8

7:56 pm - 9:16 am

ONT

SFO

13h 20m1 stop

6:18 pm - 1:06 pm

SFO

ONT

18h 48m2 stops

$269Alaska Airlines

Useful Info

Low season	February
High season	April
Cheapest flight	$112
Average price round-trip	$255

Best time to beat the crowds with an average 65% drop in price.

Most popular time to fly with an average 30% increase in price.

Flight from Ontario to San Francisco

(price for this month)

When to Book Flights with Alaska Airlines from Ontario to San Francisco

Average price per month

Flight prices as travel date approaches

Is Alaska Airlines the cheapest airline to fly with from Ontario to San Francisco?
With an average price of $187 return, Alaska Airlines is not the cheapest airline to fly from Ontario to San Francisco with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $105 on average.
What is the cheapest Alaska Airlines flight from Ontario to San Francisco?
In the last 3 days, the lowest price for a flight with Alaska Airlines from Ontario to San Francisco was $79 for a return flight and $59 for a one-way flight.
Does Alaska Airlines fly direct to San Francisco from Ontario?
No, Alaska Airlines does not fly the route directly.
What’s the cheapest day of the week to fly from Ontario to San Francisco with Alaska Airlines?
On average, the cheapest day of the week to fly from Ontario to San Francisco with Alaska Airlines is Friday, when prices are around $29. The most expensive day is generally Thursday, where the average price is around $101.

8.0

Very good10,000 verified ratings

8.1Boarding

8.5Crew

7.0Entertainment

7.1Food

7.8Comfort

Pros +

Crew was good. (in 1348 reviews)

Cons -

Full flight amidst this pandemic? (in 1480 reviews)

10.0 Wonderful

Judith, Dec 2025

PDX

BUR

I always choose Alaska when I can. Every thing seems to run more efficiently with them.

10.0 Wonderful

Verified traveler, Dec 2025

BUR

STS

Great Service

10.0 Wonderful

Tony, Dec 2025

RDU

SEA

Great …check-in was a little messy but went by quick.

8.0 Very good

Verified traveler, Dec 2025

JFK

SFO

I don’t think Alaska coordinates with Kayak. I did not get a “check-in” email inviting me to check in 24 hours in advance. Had to wait 20+ minutes to get a wheel chair.

2.0 Poor

Lucianne, Dec 2025

KOA

SEA

Alaska Airlines has horrible customer service. After sitting in a packed airplane for over an hour, they decided to cancel our flight and had us deplane. Instead of helping us nearby, we had to ride two trains (in Seattle Airport), from the S-Gates to the C-Gates; only to stand in a line for 3 and a half hours. Throughout the 3 hours, there was often 1 agent at the customer service counter to help the passengers trying to get information and accommodation on a flight that they cancelled. Do better!

8.0 Very good

Verified traveler, Dec 2025

SEA

SFO

The plane was delayed which was annoying. No seat back screens is a bummer. Staff if great

6.0 Okay

Verified traveler, Dec 2025

SEA

PHL

I got my seat changed last minute so a parent coumd sit with their child wich i found out was a teenager

10.0 Wonderful

sanjay, Dec 2025

EWR

LAX

No problem & very well.

10.0 Wonderful

Verified traveler, Dec 2025

SEA

MFR

Great landing and smooth flying.

10.0 Wonderful

Verified traveler, Dec 2025

KOA

SEA

Pretty good. I would fly with Alaska again.

Everything you need to know for your flight from Ontario to San Francisco

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Alaska Airlines flights

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Flights to other cities

Return flight deals

Other airlines flying from Ontario to San Francisco

Frontier flights from Ontario to San Francisco

ONT - SFO

$112 Find Cheap Alaska Airlines Flights from Ontario to San Francisco

Search hundreds of travel sites at once for deals on Alaska Airlines flights from Ontario to San Francisco

Cheap Alaska Airlines Flight Deals from Ontario to San Francisco

Recent round-trip Alaska Airlines flight deals from Ontario to San Francisco

Recent one-way Alaska Airlines flight deals from Ontario to San Francisco

Recent last minute Alaska Airlines flight deals from Ontario to San Francisco

Good to know

When to Book Flights with Alaska Airlines from Ontario to San Francisco

FAQs for flying to San Francisco with Alaska Airlines

Is Alaska Airlines the cheapest airline to fly with from Ontario to San Francisco?

With an average price of $187 return, Alaska Airlines is not the cheapest airline to fly from Ontario to San Francisco with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $105 on average.

What is the cheapest Alaska Airlines flight from Ontario to San Francisco?

In the last 3 days, the lowest price for a flight with Alaska Airlines from Ontario to San Francisco was $79 for a return flight and $59 for a one-way flight.

Does Alaska Airlines fly direct to San Francisco from Ontario?

No, Alaska Airlines does not fly the route directly.

What’s the cheapest day of the week to fly from Ontario to San Francisco with Alaska Airlines?

On average, the cheapest day of the week to fly from Ontario to San Francisco with Alaska Airlines is Friday, when prices are around $29. The most expensive day is generally Thursday, where the average price is around $101.

Alaska Airlines Customer Reviews

Pros +

Cons -

Traveler rating:

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Everything you need to know for your flight from Ontario to San Francisco

Other airlines flying from Ontario to San Francisco

Flight deals from the most popular airlines with KAYAK users flying the route

Top Alaska Airlines flights

The most popular destinations for flights with Alaska Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Cabin class types available on flights to San Francisco

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to San Francisco with a hotel stay or car rental

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Find deals for your return flight