Cheap Flights to Contra Costa County | Popular Routes to Contra Costa County from HK$380

View HK$380 flight on Tue, 12 May 2026Opens in a new window

Popular airlines to Contra Costa County

  • Alaska Airlines

  • American Airlines

  • Frontier Airlines

  • Delta

  • United

  • Southwest 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$380 for one-way flights and HK$760 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 17 Mar - Tue, 24 Mar
SEA
Seattle
SJC
San Jose
HK$760 Return, found 2 days ago
HK$760
Return
found 2 days ago
Select Delta flight, departing Tue, 17 Mar from Seattle to San Jose, returning Tue, 24 Mar, priced at HK$760 found 2 days ago
Delta
Wed, 18 Mar - Wed, 25 Mar
SEA
Seattle
SFO
San Francisco
HK$760 Return, found 1 day ago
HK$760
Return
found 1 day ago
Select Delta flight, departing Wed, 18 Mar from Seattle to San Francisco, returning Wed, 25 Mar, priced at HK$760 found 1 day ago
Delta
Tue, 17 Mar - Tue, 24 Mar
SEA
Seattle
SJC
San Jose
HK$838 Return, found 2 days ago
HK$838
Return
found 2 days ago
Select Delta flight, departing Tue, 17 Mar from Seattle to San Jose, returning Tue, 24 Mar, priced at HK$838 found 2 days ago
Delta
Tue, 17 Mar - Tue, 24 Mar
SEA
Seattle
SJC
San Jose
HK$916 Return, found 2 days ago
HK$916
Return
found 2 days ago
Select Delta flight, departing Tue, 17 Mar from Seattle to San Jose, returning Tue, 24 Mar, priced at HK$916 found 2 days ago
Delta
Sat, 25 Apr - Sat, 2 May
SEA
Seattle
SFO
San Francisco
HK$1,083 Return, found 2 days ago
HK$1,083
Return
found 2 days ago
Select Delta flight, departing Sat, 25 Apr from Seattle to San Francisco, returning Sat, 2 May, priced at HK$1,083 found 2 days ago
Delta
Tue, 31 Mar - Mon, 6 Apr
SEA
Seattle
SFO
San Francisco
HK$1,212 Return, found 2 days ago
HK$1,212
Return
found 2 days ago
Select Delta flight, departing Tue, 31 Mar from Seattle to San Francisco, returning Mon, 6 Apr, priced at HK$1,212 found 2 days ago
Delta
Tue, 31 Mar - Sun, 5 Apr
SEA
Seattle
SFO
San Francisco
HK$1,233 Return, found 2 days ago
HK$1,233
Return
found 2 days ago
Select Delta flight, departing Tue, 31 Mar from Seattle to San Francisco, returning Sun, 5 Apr, priced at HK$1,233 found 2 days ago
Alaska Airlines
Thu, 19 Mar - Tue, 31 Mar
SEA
Seattle
SFO
San Francisco
HK$1,276 Return, found 1 day ago
HK$1,276
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 19 Mar from Seattle to San Francisco, returning Tue, 31 Mar, priced at HK$1,276 found 1 day ago
American Airlines
Sat, 25 Apr - Sat, 2 May
SEA
Seattle
SFO
San Francisco
HK$1,441 Return, found 2 days ago
HK$1,441
Return
found 2 days ago
Select American Airlines flight, departing Sat, 25 Apr from Seattle to San Francisco, returning Sat, 2 May, priced at HK$1,441 found 2 days ago
United
Sat, 21 Mar - Wed, 25 Mar
SEA
Seattle
SFO
San Francisco
HK$1,545 Return, found 1 day ago
HK$1,545
Return
found 1 day ago
Select United flight, departing Sat, 21 Mar from Seattle to San Francisco, returning Wed, 25 Mar, priced at HK$1,545 found 1 day 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.

Delta
Wed, 3 Jun - Wed, 11 Nov
HKG
Hong Kong SAR
SFO
San Francisco
HK$4,611 Return, found 1 day ago
HK$4,611
Return
found 1 day ago
Select Delta flight, departing Wed, 3 Jun from Hong Kong SAR to San Francisco, returning Wed, 11 Nov, priced at HK$4,611 found 1 day ago

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$760. 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$760 and HK$4,611. If you were traveling one way out of Seattle (SEA), you could have picked up a bargain from just HK$380.
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$760 to HK$4,611 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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