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).

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

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

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

Most trusted provider : When it comes to deals on Williamsport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams 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 Williamsport-San Francisco 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 Williamsport to San Francisco that include hotel bookings?

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

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

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

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

Yes. Cheapflights offers flight deals from Williamsport 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.

$1,301+ Flights from Williamsport to San Francisco

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Cheap flight deals from Williamsport to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,299 (Expedia)

Provider with most accurate pricing for Williamsport Lycoming County-San Francisco flight deals.

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Provider most trusted by Cheapflights users for Williamsport Lycoming County-San Francisco flights.

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From Williamsport Lycoming County to San Francisco

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Find flight deals from Williamsport to San Francisco

Cheapest flights from Williamsport to San Francisco
Explore the most affordable flight options available from Williamsport to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

Fri 1/302:50 pm

IPT

SFO

2 stops10h 57m

Multiple Airlines

Tue 2/39:42 pm

SFO

IPT

3 stops18h 08m

Multiple Airlines

Deal found 1/15

$1,301

Best flights from Williamsport to San Francisco
Discover carefully curated flight deals from Williamsport to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 15, 2026.

Fri 1/302:50 pm

IPT

SFO

2 stops10h 57m

Multiple Airlines

Tue 2/39:42 pm

SFO

IPT

3 stops18h 08m

Multiple Airlines

Deal found 1/15

$1,301

Last-minute flights from Williamsport to San Francisco
Discover last-minute flight deals from Williamsport to San Francisco. Data last updated January 15, 2026 and is based on user searches.

Fri 1/302:50 pm

IPT

SFO

2 stops10h 57m

Multiple Airlines

Tue 2/39:42 pm

SFO

IPT

3 stops18h 08m

Multiple Airlines

Deal found 1/15

$1,301

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

WilliamsportSan Francisco

IPT - SFO

IPTSFO

Williamsport Lycoming County

Fri 1/30

2:50 pm-10:47 pm

2 stops10h 57m

San Francisco

Tue 2/3

9:42 pm-6:50 pm

3 stops18h 08m

$1,301

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Compare providers for flights from Williamsport to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Williamsport to San Francisco in January.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Expedia	Price Accuracy2 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 Williamsport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Williamsport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Williamsport-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Williamsport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams 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 Williamsport-San Francisco 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 Williamsport to San Francisco

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

What is the cheapest month to book a flight from Williamsport to San Francisco?

Currently, May is the cheapest month in which you can book a flight from Williamsport to San Francisco (average of $294). Flying from Williamsport to San Francisco in December is currently the most expensive (average of $330). 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.

Related info for your journey

Can I find deals for flights from Williamsport to San Francisco that include hotel bookings?
Yes. In addition to deals on Williamsport to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Williamsport to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Williamsport to San Francisco.
Can I find deals for business class flights from Williamsport to San Francisco?
Yes. Cheapflights offers flight deals from Williamsport 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 Williamsport to San Francisco?
Currently, May is the cheapest month in which you can book a flight from Williamsport to San Francisco (average of $294). Flying from Williamsport to San Francisco in December is currently the most expensive (average of $330). 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.

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$1,301+ Cheap flights from Williamsport to San Francisco (IPT - SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Williamsport 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 Williamsport to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

Find flight deals from Williamsport to San Francisco

Cheapest flights from Williamsport to San FranciscoExplore the most affordable flight options available from Williamsport to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

Explore the most affordable flight options available from Williamsport to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

Cheapflights Fare Finder

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

Compare providers for flights from Williamsport to San Francisco

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 Williamsport to San Francisco in January.

Best time to book a flight from Williamsport to San Francisco

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

Cheapflights Insights

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

What is the cheapest month to book a flight from Williamsport to San Francisco?

Related info for your journey

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

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

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

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

What is the cheapest month to book a flight from Williamsport to San Francisco?

Traveling to a place near San Francisco?

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Cheapest flights from Williamsport to San Francisco
Explore the most affordable flight options available from Williamsport to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.