What is the cheapest airline to fly from Hamilton, Ontario to San Francisco round-trip?

Flying on WestJet is currently your cheapest option to San Francisco, with prices starting at $277. This flight start at 29% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

How far in advance should I book a flight from Hamilton, Ontario to San Francisco?

To save on the cost of your flight from Hamilton, Ontario to San Francisco, book at least 47 days before your planned departure. Booking around this time can save you about 77% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $434 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $728.

What is the cheapest month to fly from Hamilton, Ontario to San Francisco?

Our data shows that April tends to be the cheapest month to fly to San Francisco from Hamilton, Ontario. Users have commonly found prices around $390 for the month, but tickets can be as low as $214. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from YHM to SFO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hamilton, Ontario to San Francisco as you normally would.

Can I find deals for flights from Hamilton to San Francisco that include hotel bookings?

Yes. In addition to deals on Hamilton to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Hamilton to San Francisco?

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

Can I find deals for business class flights from Hamilton to San Francisco?

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

$153+ Flights from Hamilton, ON to San Francisco

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Cheap flight deals from Hamilton to San Francisco

Round-trip from	$277 (FlightHub)
One-way from	$153 (Mytrip)
Popular in	January
Cheapest in	September
Average price	$370

From Hamilton to San Francisco

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One-way flight from Hamilton to San Francisco

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Highest demand for flights based on searches. 20% potential increase in price ($101 potential increase over avg. RT price).

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Cheapest flight prices on average. 9% potential price decrease ($35 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 Hamilton to San Francisco

Cheapest flights from Hamilton to San Francisco
Explore the most affordable flight options available from Hamilton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

Fri 8/296:00 amYHM - SFO

1 stop8h 56mWestJet

Mon 9/112:50 pmSFO - YHM

1 stop8h 50mWestJet

Deal found 7/10

$277

Sat 9/136:00 amYHM - SFO

2 stops10h 57mMultiple Airlines

Fri 9/1910:15 amSFO - YHM

2 stops11h 25mMultiple Airlines

Deal found 7/10

$340

Best flights from Hamilton to San Francisco
Discover carefully curated flight deals from Hamilton to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2025.

Fri 8/296:00 amYHM - SFO

1 stop8h 56mWestJet

Mon 9/112:50 pmSFO - YHM

1 stop8h 50mWestJet

Deal found 7/10

$277

Sat 9/136:00 amYHM - SFO

2 stops10h 57mMultiple Airlines

Fri 9/1910:15 amSFO - YHM

2 stops11h 25mMultiple Airlines

Deal found 7/10

$340

Last-minute flights from Hamilton to San Francisco
Discover last-minute flight deals from Hamilton to San Francisco. Data last updated July 11, 2025 and is based on user searches.

Tue 7/155:45 pmYHM - SFO

1 stop18h 45mMultiple Airlines

Fri 7/257:30 amSFO - YHM

3 stops30h 14mMultiple Airlines

Deal found 7/8

$652

Fri 7/186:00 amYHM - SFO

1 stop9h 05mWestJet

Tue 7/2912:50 pmSFO - YHM

1 stop8h 51mWestJet

Deal found 7/9

$594

Tue 8/56:00 amYHM - SFO

1 stop8h 56mMultiple Airlines

Tue 8/124:03 pmSFO - YHM

2 stops29h 38mMultiple Airlines

Deal found 7/7

$330

Fri 8/296:00 amYHM - SFO

1 stop8h 56mWestJet

Mon 9/112:50 pmSFO - YHM

1 stop8h 50mWestJet

Deal found 7/10

$277

One-way flights from Hamilton to San Francisco
Search for one-way flight options from Hamilton to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 11, 2025.

Sat 8/166:00 amYHM - SFO

1 stop8h 56mWestJet

Deal found 7/9

$153

Mon 8/46:00 amYHM - SFO

3 stops31h 10mMultiple Airlines

Deal found 7/10

$180

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hamilton to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Fri 8/29

6:00 am-11:56 am

1 stop8h 56m

San Francisco

Mon 9/1

12:50 pm-12:40 am

1 stop8h 50m

$277

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Sat 9/13

6:00 am-1:57 pm

2 stops10h 57m

San Francisco

Fri 9/19

10:15 am-12:40 am

2 stops11h 25m

$340

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Sat 8/16

6:00 am-11:56 am

1 stop8h 56m

$153

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Mon 8/4

6:00 am-10:10 am

3 stops31h 10m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Best time to book a flight from Hamilton to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Hamilton 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 Hamilton to San Francisco

What is the cheapest month to book a flight from Hamilton, Ontario to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Hamilton, Ontario to San Francisco (average of $276). Flying from Hamilton, Ontario to San Francisco in June is currently the most expensive (average of $358). 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.

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown WestJet from Hamilton to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

WestJet

7.2

Good

2,924 reviews

Reviews

1 / 20

6.0

Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

WestJet

7.2

Good

2,924 reviews

WestJet

7.2

Good

2,924 reviews

Reviews

1 / 20

6.0

Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

Related info for your journey

What is the cheapest airline to fly from Hamilton, Ontario to San Francisco round-trip?
Flying on WestJet is currently your cheapest option to San Francisco, with prices starting at $277. This flight start at 29% lower than the current average price 3 months from now.
Can I find deals for flights from Hamilton to San Francisco that include hotel bookings?
Yes. In addition to deals on Hamilton to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Hamilton to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to San Francisco.
Can I find deals for business class flights from Hamilton to San Francisco?
Yes. Cheapflights offers flight deals from Hamilton to San Francisco 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 Hamilton, Ontario to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Hamilton, Ontario to San Francisco (average of $276). Flying from Hamilton, Ontario to San Francisco in June is currently the most expensive (average of $358). 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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$153+ Cheap flights from Hamilton, ON (YHM) to San Francisco (SFO)

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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hamilton to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Hamilton to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Hamilton to San Francisco

Cheapest flights from Hamilton to San FranciscoExplore the most affordable flight options available from Hamilton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

Explore the most affordable flight options available from Hamilton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hamilton to San Francisco that are best for you.

Best time to book a flight from Hamilton to San Francisco

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

Cheapflights Insights

Everything you need to know about your flight from Hamilton to San Francisco

What is the cheapest month to book a flight from Hamilton, Ontario to San Francisco?

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown WestJet from Hamilton to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What is the cheapest airline to fly from Hamilton, Ontario to San Francisco round-trip?

Can I find deals for flights from Hamilton to San Francisco that include hotel bookings?

How can I find direct flights from Hamilton to San Francisco?

Can I find deals for business class flights from Hamilton to San Francisco?

What is the cheapest month to book a flight from Hamilton, Ontario to San Francisco?

Traveling to a place near Hamilton?

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Cheapest flights from Hamilton to San Francisco
Explore the most affordable flight options available from Hamilton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.