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 $236. This flight start at 40% lower than the current average price 3 months from now.

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

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

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 75% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $423 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 $391 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.

$141+ Flights from Hamilton, ON to San Francisco

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Cheap flight deals from Hamilton to San Francisco

Round-trip from	$236 (Trip.com)
One-way from	$141 (SmartFares)
Popular in	January
Cheapest in	September
Average price	$312

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 ($98 potential increase over avg. RT price).

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Cheapest flight prices on average. 9% potential price decrease ($34 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 12, 2025.

Mon 8/116:00 amYHM - SFO

1 stop8h 56mWestJet

Wed 8/1312:50 pmSFO - YHM

1 stop8h 51mWestJet

Deal found 6/10

$236

Tue 7/155:45 pmYHM - SFO

1 stop18h 45mMultiple Airlines

Fri 7/1812:50 pmSFO - YHM

1 stop8h 51mMultiple Airlines

Deal found 6/10

$379

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 June 12, 2025.

Mon 8/116:00 amYHM - SFO

1 stop8h 56mWestJet

Wed 8/1312:50 pmSFO - YHM

1 stop8h 51mWestJet

Deal found 6/10

$236

Fri 7/186:00 amYHM - SFO

2 stops10h 59mMultiple Airlines

Mon 7/2110:15 amSFO - YHM

1 stop27h 29mMultiple Airlines

Deal found 6/10

$341

Last-minute flights from Hamilton to San Francisco
Discover last-minute flight deals from Hamilton to San Francisco. Data last updated June 12, 2025 and is based on user searches.

Tue 6/176:00 amYHM - SFO

1 stop9h 05mWestJet

Tue 8/197:30 amSFO - YHM

1 stop14h 11mWestJet

Deal found 6/11

$305

Sat 6/218:05 amYHM - SFO

1 stop28h 25mMultiple Airlines

Sat 6/2810:15 amSFO - YHM

1 stop30h 44mMultiple Airlines

Deal found 6/11

$686

Tue 7/155:45 pmYHM - SFO

1 stop18h 45mMultiple Airlines

Fri 7/1812:50 pmSFO - YHM

1 stop8h 51mMultiple Airlines

Deal found 6/10

$379

Fri 7/186:00 amYHM - SFO

2 stops10h 59mWestJet

Wed 7/2312:50 pmSFO - YHM

1 stop8h 51mWestJet

Deal found 6/10

$239

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 June 12, 2025.

Fri 7/256:00 amYHM - SFO

2 stops10h 59mWestJet

Deal found 6/10

$141

Wed 7/235:45 pmYHM - SFO

1 stop18h 45mMultiple Airlines

Deal found 6/12

$217

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

Mon 8/11

6:00 am-11:56 am

1 stop8h 56m

San Francisco

Wed 8/13

12:50 pm-12:41 am

1 stop8h 51m

$236

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Fri 7/18

6:00 am-1:59 pm

2 stops10h 59m

San Francisco

Mon 7/21

10:15 am-4:44 pm

1 stop27h 29m

$341

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Fri 7/25

6:00 am-1:59 pm

2 stops10h 59m

$141

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Wed 7/23

5:45 pm-9:30 am

1 stop18h 45m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $364). 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.

Rainfall in San Francisco by month

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.

Temperature in San Francisco by month

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).

Reviews of airlines servicing San Francisco

WestJet

7.2

Good

2,868 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

2,868 reviews

WestJet

7.2

Good

2,868 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 $236. This flight start at 40% 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 $364). 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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$141+ 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 7/25. 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 June 12, 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 June 12, 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?

Rainfall in San Francisco by month

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

Temperature in San Francisco by month

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

Reviews of airlines servicing San Francisco

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 June 12, 2025.