Cheap Flights to San Mateo County | Popular Routes to San Mateo County from HK$2,496

View HK$2,496 flight on Wed, 21 Jan 2026Opens in a new window

Popular airlines to San Mateo County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Alaska Airlines

    Alaska Airlines

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • JetBlue Airways

    JetBlue Airways

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Cheap round-trip flights to San Mateo County

Prices were available within the past 7 days and start at HK$2,496 for one-way flights and HK$3,627 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sat, 24 Jan - Fri, 6 Feb
ICN
Seoul
SFO
San Francisco
HK$3,627 Return, found 1 day ago
HK$3,627
Return
found 1 day ago
Select Air Canada flight, departing Sat, 24 Jan from Seoul to San Francisco, returning Fri, 6 Feb, priced at HK$3,627 found 1 day ago
Asiana Airlines
Mon, 2 Mar - Wed, 22 Apr
GMP
Seoul
SFO
San Francisco
HK$3,739 Return, found 6 days ago
HK$3,739
Return
found 6 days ago
Select Asiana Airlines flight, departing Mon, 2 Mar from Seoul to San Francisco, returning Wed, 22 Apr, priced at HK$3,739 found 6 days ago
American Airlines
Wed, 24 Dec - Sun, 4 Jan
ICN
Seoul
SFO
San Francisco
HK$3,847 Return, found 2 days ago
HK$3,847
Return
found 2 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seoul to San Francisco, returning Sun, 4 Jan, priced at HK$3,847 found 2 days ago
United
Sun, 1 Mar - Wed, 11 Mar
ICN
Seoul
SFO
San Francisco
HK$3,871 Return, found 7 hours ago
HK$3,871
Return
found 7 hours ago
Select United flight, departing Sun, 1 Mar from Seoul to San Francisco, returning Wed, 11 Mar, priced at HK$3,871 found 7 hours ago
Air Premia
Sat, 24 Jan - Fri, 6 Feb
ICN
Seoul
SFO
San Francisco
HK$3,883 Return, found 1 day ago
HK$3,883
Return
found 1 day ago
Select Air Premia flight, departing Sat, 24 Jan from Seoul to San Francisco, returning Fri, 6 Feb, priced at HK$3,883 found 1 day ago
United
Thu, 25 Dec - Fri, 9 Jan
ICN
Seoul
SJC
San Jose
HK$4,173 Return, found 2 days ago
HK$4,173
Return
found 2 days ago
Select United flight, departing Thu, 25 Dec from Seoul to San Jose, returning Fri, 9 Jan, priced at HK$4,173 found 2 days ago
Delta
Fri, 26 Dec - Wed, 31 Dec
ICN
Seoul
SFO
San Francisco
HK$4,941 Return, found 5 days ago
HK$4,941
Return
found 5 days ago
Select Delta flight, departing Fri, 26 Dec from Seoul to San Francisco, returning Wed, 31 Dec, priced at HK$4,941 found 5 days ago
China Airlines
Sat, 28 Mar - Sun, 5 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$4,981 Return, just found
HK$4,981
Return
just found
Select China Airlines flight, departing Sat, 28 Mar from Hong Kong SAR to San Francisco, returning Sun, 5 Apr, priced at HK$4,981 just found
Philippine Airlines
Wed, 6 May - Wed, 13 May
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,185 Return, found 3 days ago
HK$5,185
Return
found 3 days ago
Select Philippine Airlines flight, departing Wed, 6 May from Hong Kong SAR to San Francisco, returning Wed, 13 May, priced at HK$5,185 found 3 days ago
Asiana Airlines
Sat, 25 Apr - Sun, 15 Nov
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,279 Return, found 1 hour ago
HK$5,279
Return
found 1 hour ago
Select Asiana Airlines flight, departing Sat, 25 Apr from Hong Kong SAR to San Francisco, returning Sun, 15 Nov, priced at HK$5,279 found 1 hour ago

Airports in San Mateo County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest option available. Flights from HK$3,499
SFO
San Francisco Intl.
Cheapest
Flights from HK$3,499

About San Mateo County

Expedia offers flights to San Mateo County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to San Mateo County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

Frequently asked questions

How do I find cheap flights to San Mateo County that have flexible change policies?
By using our nifty "No change fee" filter, that's how. All you have to do is enter your travel details, click the "Search" button, then select the box below the "Flexible change policies" heading (to the left). Expedia makes it a snap to find cheap, flexible flights to San Mateo County.
Which airlines fly to San Mateo County?
You can take your pick of a range of airlines that touch down in or near San Mateo County. A few of your best options are:

  • United Airlines - 5,914 flights to or near San Mateo County each month, including 5,914 flights to San Francisco Intl. Airport (SFO) per month.
  • Alaska Airlines - 2,349 flights to or near San Mateo County each month, including 2,349 flights to San Francisco Intl. Airport (SFO) per month.
  • Delta Air Lines - 1,222 flights to or near San Mateo County each month, including 1,222 flights to San Francisco Intl. Airport (SFO) per month.

How can I find cheap tickets to San Mateo County?
In the last seven days, HK$3,627 was the lowest price for a flight to San Mateo County. For an even cheaper fare, book well ahead of time and be flexible with your travel dates. Search for your flight to San Mateo County, then check out prices for nearby days by clicking on the "flexible dates" link above.
How much is a flight to San Mateo County?
The price of a round-trip airfare to San Mateo County in the last seven days varied between HK$3,627 and HK$5,279. If you were flying one way out of Seoul (ICN), you could have picked up a bargain from just HK$2,496.
What are the most popular airports to fly into in San Mateo County?
San Mateo County's primary gateway is San Francisco Intl. Airport (SFO). Get your next thrilling journey underway by reserving a ticket on one of the 11,935 flights every month to this destination.
When is the cheapest time to fly to San Mateo County?
Jet off on a Tuesday to boost your odds of scoring the cheapest flight to San Mateo County. Mondays are usually the second most affordable day to depart. Saturday is typically the most expensive day to fly anywhere.
How much is a plane ticket to San Mateo County?
In the last seven days, airfares to San Mateo County varied between HK$3,627 and HK$5,279. Prices depend on a number of things, particularly the departure time, cabin class, airline and when the fare is booked.
What is the best time to go to San Mateo County?
Summer starts June 20 in the Northern Hemisphere, and these warmer months are an excellent time to visit the exciting San Mateo County city of San Francisco. Average temperatures vary between 13ºC and 24ºC throughout this season. The largest crowds are found here in March, April and May.
What months are the cheapest to book a flight to San Mateo County?
The best month to purchase well-priced fares to San Mateo County is February. Bear in mind that in the U.S, the most expensive time to book a ticket is the month of December.

Trending flights to San Mateo County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Airlines
Sat, 28 Mar - Sun, 5 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$4,981 Return, just found
HK$4,981
Return
just found
Select China Airlines flight, departing Sat, 28 Mar from Hong Kong SAR to San Francisco, returning Sun, 5 Apr, priced at HK$4,981 just found
*Available to Expedia members.