Cheap Flights to San Francisco

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Home USA California Cheap flights to San Francisco, California

Flights to San Francisco in 2021

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
Popular inJanuaryHigh demand for flights, 13% potential price rise
Cheapest inAugustBest time to find cheap flights, 3% potential price drop
Average priceHK$4,614Average for round-trip flights in April 2021
Round-trip fromHK$4,528From Hong Kong to San Francisco
One-way fromHK$3,728One-way flight from Hong Kong to San Francisco

Cheapest prices for San Francisco flights by month

The cheapest ticket to San Francisco found for each month in 2021 based on historical flight searches by Cheapflights users.
January
HK$5,851
February
HK$4,683
March
HK$4,340
April
HK$4,892
May
HK$4,935
June
HK$5,241
July
HK$5,783
August
HK$5,706
September
HK$4,505
October
HK$4,414
November
HK$4,218
December
HK$5,454
At the present moment the cheapest month to fly to San Francisco is currently November; with January being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

When is the best time to fly to San Francisco?

Average San Francisco flight ticket prices and weather conditions for 2021 and 2022 by month.
HKG - SFO
Price
HK$4,218 - HK$9,528
SFO
Temperature
15 - 25 °C
SFO
Rainfall
0 - 120 mm
Flying to San Francisco in November is usually considered the best time to fly. However, you will find other deals are always available year round. September tends to be the warmest period in San Francisco so if you are looking for sun or warmer climates then look to fly around this time. December is the wettest if you need to factor this in to your plans.

When is the best time to book a flight to San Francisco?

The best time to book flights to San Francisco is 19 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Which day is cheapest to fly to San Francisco?

Tuesday is currently, on average, the cheapest day to fly to San Francisco. Flying on Saturday will result in higher flight prices.

What time of day is cheapest to fly to San Francisco?

Flights in the morning are typically the cheapest time of the day to fly to San Francisco. Flights in the afternoon are usually the most expensive.

Look outside the window of your San Francisco flight and watch the dense fog begin to evaporate as the monumental Golden Gate Bridge slowly makes its debut and your sybaritic journey is about to commence.

For years the City by the Bay has been attracting bohemian artists, musicians and technophiles who all flock to its fascinating neighbourhoods and world-class museums. And holidaymakers who book flights to San Francisco won’t be disappointed either. Your first day should begin with a walk across the Bridge then hop on a cable car and take a hilly ride through the city. Stop in Chinatown, which has one of the largest Chinese communities in the US, and sample some delicious dim sum. Then take a nostalgic stroll down the famous Haight-Ashbury district, where hippies congregate and in 1967 the ‘Summer of Love’ took place.

If you have some extra time, don’t miss a ferry ride to the chilling Alcatraz Island dubbed ‘The Rock’, home of the infamous prison where the likes of Al Capone and other notorious gangsters were imprisoned. Another island worth visiting is Angel Island. Although Angel was once a prison and quarantine station for immigrants, it’s come a long way since. Today visitors BBQ on the green grass, hike to the top of Mt. Livermore and go mountain biking around the picturesque island.

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San Francisco climate

San Francisco is surprisingly chilly, even in summer. Summer temperatures occasionally go above 21 (Celsius) with a morning fog over the city. Due to the fog, the city rarely sees more than a few hot days in a row, but just a few kilometres inland it’s clear, hot, and dry. Autumn has clear skies and temperatures in the mid-20s. Winter temperatures are usually in the teens and rarely go below freezing. But the winter rain combined with ocean breezes can make it feel cold. San Francisco is a popular holiday destination and has visitors, festivals, and events year-round. There’s always something going on.

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When is the best time to fly to San Francisco?

Peak season:

San Francisco’s peak season is the summer when most of the tourists come to visit.

Off season:

Winter is the low season for flights to San Francisco; however, this is when the ballet and opera seasons are in full swing.

Shoulder season:

Mid-September to mid-November is the best time to visit San Francisco. Most of the tourists have gone home, and San Francisco is usually warm and sunny.

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Getting around San Francisco

Renting a car in San Francisco is more trouble than it’s worth. The city is covered with steep hills and one-way streets, traffic backups can be a nightmare and parking is scarce and expensive. You’ll only need a car if you’re heading out of town. It’s easy to get around on foot and the public transport system can get you anywhere else. 

San Francisco’s main transport network is the San Francisco Municipal Railway (Muni). It has 100 bus lines with electric trolley buses and the famous historic cable cars. Riding one of the cable cars from Nob Hill down to Fisherman’s Wharf is an integral part of the San Francisco tourist experience. Check out the Muni Passports that offer unlimited rides for several days. 

Biking is a popular way to get around, but you’ll have to steel yourself to get up and over some of the hills. The easiest way to get a cab is calling ahead or lining up for one at a hotel stand. To get out of the city, you can hop aboard the Bay Area Rapid Transit (BART), the fast and efficient subway linking the city to the East Bay. You can also catch one of the many ferries sailing for Sausalito, Larkspur and Tiburon.

 

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Cheap flights to San Francisco in April, May 2021

The best prices found for SFO flights for April, May
24 May - 1 Jun
HK$4,186pp
HKG
Hong Kong Intl
Air Canada
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
 
1 STOP
HKG
Hong Kong Intl
3 May - 4 May
HK$4,800pp
HKG
Hong Kong Intl
Asiana Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Asiana Airlines
 
1 STOP
HKG
Hong Kong Intl
9 May - 15 Aug
HK$4,878pp
HKG
Hong Kong Intl
Japan Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Japan Airlines
   
2 STOPS
HKG
Hong Kong Intl

San Francisco 2021 flight deals

Cheap flights to San Francisco found for this year
24 May - 1 Jun
HK$4,186pp
HKG
Hong Kong Intl
Air Canada
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
 
1 STOP
HKG
Hong Kong Intl
1 Jul - 16 Jul
HK$4,225pp
HKG
Hong Kong Intl
Air Canada
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
   
2 STOPS
HKG
Hong Kong Intl
15 Jun - 7 Jul
HK$4,528pp
HKG
Hong Kong Intl
Asiana Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Asiana Airlines
 
1 STOP
HKG
Hong Kong Intl

Last minute flights to San Francisco

Late deals on return flights to San Francisco, departing today and this week
23 Apr - 30 Apr
HK$6,897pp
HKG
Hong Kong Intl
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
HKG
Hong Kong Intl
23 Apr - 30 Apr
HK$7,309pp
HKG
Hong Kong Intl
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
HKG
Hong Kong Intl
22 Apr - 30 Apr
HK$9,235pp
HKG
Hong Kong Intl
Delta
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Delta
   
2 STOPS
HKG
Hong Kong Intl

Alternative, similarly priced destinations

See alternative destinations where airfare is generally forecast to be close to San Francisco flight prices.

Find the best prices for you!

Cheap tickets to San Francisco found by our users in Hong Kong as recently as April 16, 2021.

San Francisco, California airports

See all airports in San Francisco, select one to find and compare flight prices.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2021.
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