Cheap Flights to Contra Costa County | Popular Routes to Contra Costa County from HK$379

View HK$379 flight on Wed, 11 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$379 for one-way flights and HK$671 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 22 Apr - Wed, 22 Apr
SEA
Seattle
SFO
San Francisco
HK$671 Return, found 2 days ago
HK$671
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 22 Apr from Seattle to San Francisco, returning Wed, 22 Apr, priced at HK$671 found 2 days ago
Alaska Airlines
Tue, 3 Mar - Wed, 18 Mar
PAE
Seattle
SFO
San Francisco
HK$715 Return, found 3 days ago
HK$715
Return
found 3 days ago
Select Alaska Airlines flight, departing Tue, 3 Mar from Seattle to San Francisco, returning Wed, 18 Mar, priced at HK$715 found 3 days ago
Delta
Tue, 21 Apr - Wed, 22 Apr
SEA
Seattle
SFO
San Francisco
HK$758 Return, found 2 days ago
HK$758
Return
found 2 days ago
Select Delta flight, departing Tue, 21 Apr from Seattle to San Francisco, returning Wed, 22 Apr, priced at HK$758 found 2 days ago
Delta
Tue, 10 Feb - Tue, 10 Feb
SEA
Seattle
SJC
San Jose
HK$876 Return, found 1 day ago
HK$876
Return
found 1 day ago
Select Delta flight, departing Tue, 10 Feb from Seattle to San Jose, returning Tue, 10 Feb, priced at HK$876 found 1 day ago
United
Tue, 7 Apr - Wed, 8 Apr
SEA
Seattle
SFO
San Francisco
HK$1,264 Return, found 3 days ago
HK$1,264
Return
found 3 days ago
Select United flight, departing Tue, 7 Apr from Seattle to San Francisco, returning Wed, 8 Apr, priced at HK$1,264 found 3 days ago
American Airlines
Tue, 10 Mar - Tue, 17 Mar
PAE
Seattle
SFO
San Francisco
HK$1,769 Return, found 1 day ago
HK$1,769
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Mar from Seattle to San Francisco, returning Tue, 17 Mar, priced at HK$1,769 found 1 day ago
Korean Air
Wed, 15 Apr - Wed, 15 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,303 Return, just found
HK$5,303
Return
just found
Select Korean Air flight, departing Wed, 15 Apr from Hong Kong SAR to San Francisco, returning Wed, 15 Apr, priced at HK$5,303 just found
China Eastern Airlines
Wed, 25 Mar - Mon, 13 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,345 Return, found 1 hour ago
HK$5,345
Return
found 1 hour ago
Select China Eastern Airlines flight, departing Wed, 25 Mar from Hong Kong SAR to San Francisco, returning Mon, 13 Apr, priced at HK$5,345 found 1 hour ago
China Airlines
Sat, 28 Mar - Mon, 13 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,385 Return, just found
HK$5,385
Return
just found
Select China Airlines flight, departing Sat, 28 Mar from Hong Kong SAR to San Francisco, returning Mon, 13 Apr, priced at HK$5,385 just found
Vietnam Airlines
Fri, 8 May - Sat, 16 May
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,439 Return, found 15 hours ago
HK$5,439
Return
found 15 hours ago
Select Vietnam Airlines flight, departing Fri, 8 May from Hong Kong SAR to San Francisco, returning Sat, 16 May, priced at HK$5,439 found 15 hours ago

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 - Wed, 15 Apr
HKG
Hong Kong SAR
SFO
San Francisco
HK$5,303 Return, just found
HK$5,303
Return
just found
Select Korean Air flight, departing Wed, 15 Apr from Hong Kong SAR to San Francisco, returning Wed, 15 Apr, priced at HK$5,303 just found

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$671. 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$671 and HK$5,439. If you were traveling one way out of Seattle (SEA), you could have picked up a bargain from just HK$379.
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$671 to HK$5,439 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.

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About Contra Costa County

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About Contra Costa County

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