Cheap Flights to Contra Costa County | Popular Routes to Contra Costa County from HK$2,544

View HK$2,544 flight on Mon, 9 Feb 2026Opens in a new window

Popular airlines to Contra Costa County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Alaska Airlines

    Alaska Airlines

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • Spirit Airlines

    Spirit Airlines

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Cheap round-trip flights to Contra Costa County

Prices were available within the past 7 days and start at HK$2,544 for one-way flights and HK$3,562 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 17 Jan - Wed, 28 Jan
ICN
Seoul
SFO
San Francisco
HK$3,562 Return, found 4 days ago
HK$3,562
Return
found 4 days ago
Select Alaska Airlines flight, departing Sat, 17 Jan from Seoul to San Francisco, returning Wed, 28 Jan, priced at HK$3,562 found 4 days ago
Air Canada
Sun, 1 Mar - Wed, 11 Mar
ICN
Seoul
SFO
San Francisco
HK$3,713 Return, found 10 hours ago
HK$3,713
Return
found 10 hours ago
Select Air Canada flight, departing Sun, 1 Mar from Seoul to San Francisco, returning Wed, 11 Mar, priced at HK$3,713 found 10 hours ago
American Airlines
Tue, 24 Feb - Sun, 8 Mar
ICN
Seoul
SFO
San Francisco
HK$3,796 Return, found 2 days ago
HK$3,796
Return
found 2 days ago
Select American Airlines flight, departing Tue, 24 Feb from Seoul to San Francisco, returning Sun, 8 Mar, priced at HK$3,796 found 2 days ago
Air Premia
Wed, 6 May - Wed, 13 May
ICN
Seoul
SFO
San Francisco
HK$3,846 Return, found 5 days ago
HK$3,846
Return
found 5 days ago
Select Air Premia flight, departing Wed, 6 May from Seoul to San Francisco, returning Wed, 13 May, priced at HK$3,846 found 5 days ago
United
Sun, 1 Mar - Wed, 11 Mar
ICN
Seoul
SFO
San Francisco
HK$3,959 Return, found 10 hours ago
HK$3,959
Return
found 10 hours ago
Select United flight, departing Sun, 1 Mar from Seoul to San Francisco, returning Wed, 11 Mar, priced at HK$3,959 found 10 hours ago
United
Fri, 30 Jan - Mon, 23 Feb
ICN
Seoul
SJC
San Jose
HK$4,260 Return, found 5 days ago
HK$4,260
Return
found 5 days ago
Select United flight, departing Fri, 30 Jan from Seoul to San Jose, returning Mon, 23 Feb, priced at HK$4,260 found 5 days ago
Cathay Pacific
Tue, 14 Apr - Thu, 30 Apr
TPE
Taipei
SFO
San Francisco
HK$4,798 Return, just found
HK$4,798
Return
just found
Select Cathay Pacific flight, departing Tue, 14 Apr from Taipei to San Francisco, returning Thu, 30 Apr, priced at HK$4,798 just found
Delta
Tue, 14 Apr - Thu, 30 Apr
TPE
Taipei
SFO
San Francisco
HK$4,968 Return, just found
HK$4,968
Return
just found
Select Delta flight, departing Tue, 14 Apr from Taipei to San Francisco, returning Thu, 30 Apr, priced at HK$4,968 just found
Philippine Airlines
Tue, 14 Apr - Thu, 30 Apr
TPE
Taipei
SFO
San Francisco
HK$5,264 Return, just found
HK$5,264
Return
just found
Select Philippine Airlines flight, departing Tue, 14 Apr from Taipei to San Francisco, returning Thu, 30 Apr, priced at HK$5,264 just found
Korean Air
Wed, 15 Apr - Mon, 20 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,303 Return, found 15 hours ago
HK$5,303
Return
found 15 hours ago
Select Korean Air flight, departing Wed, 15 Apr from Hong Kong SAR to San Francisco, returning Mon, 20 Apr, priced at HK$5,303 found 15 hours ago

About Contra Costa County

Expedia offers flights to Contra Costa County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Contra Costa 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 Contra Costa County that have flexible change policies?
It's as easy as counting to three with Expedia. Firstly, enter your travel details and click "Search." Next step? Check "No change fee" directly under the "Flexible change policies" subheading on the left-hand side of your screen. Step 3. Book a flexible and cheap airfare to Contra Costa County.
Which airlines fly to Contra Costa County?
You can choose from a variety of airlines that operate flights in or near Contra Costa County. Some of your options are:

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

How can I find cheap tickets to Contra Costa County?
One of the easiest ways to bag cheap tickets to Contra Costa County is to be flexible with your travel dates. Search for your flights, then click "flexible dates" above the results. You'll see the cheapest prices for nearby days. The best price for a flight to Contra Costa County in the last seven days was HK$3,562. Booking well ahead will usually help you pick up an even bigger bargain.
How much is a flight to Contra Costa County?
The price of a round-trip airfare to Contra Costa County in the last seven days fluctuated between HK$3,562 and HK$5,303. If you were traveling one way out of Seoul (ICN), you could have picked up a bargain from just HK$2,544.
What are the most popular airports to fly into in Contra Costa County?
San Francisco Intl. Airport (SFO) is the primary gateway for many traveling to Contra Costa County. Around 11,935 flights each month touch down here.
When is the cheapest time to fly to Contra Costa County?
If you can be flexible with what day you jet off to Contra Costa County, fly out early on in the week. The most economical day to take off is normally Tuesday, followed by Monday. Saturday is typically the costliest day, with lots of vacationers preferring to fly on weekends.
How much is a plane ticket to Contra Costa County?
Plane tickets to Contra Costa County varied from HK$3,562 to HK$5,303 in the last seven days. Usually, the earlier you book the bigger the bargain.
What is the best time to go to Contra Costa County?
A good time to go to Concord is after June 20 when summer starts. In Contra Costa County's busiest city, average temperatures fluctuate from 13ºC to 27ºC during this time — perfect weather for touring around! May, June and August are the most popular months to discover this destination.
What months are the cheapest to book a flight to Contra Costa County?
An inexpensive month to find a flight to Contra Costa County is February, whereas prices rise considerably in December. Give this month a miss if you want to save your dollars.

Trending flights to Contra Costa 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.

Korean Air
Wed, 15 Apr - Mon, 20 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,303 Return, found 15 hours ago
HK$5,303
Return
found 15 hours ago
Select Korean Air flight, departing Wed, 15 Apr from Hong Kong SAR to San Francisco, returning Mon, 20 Apr, priced at HK$5,303 found 15 hours ago
*Available to Expedia members.