Cheap Flights to Contra Costa County from ₩464,100

View ₩464,100 flight on Fri, Dec 19, 2025Opens 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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Contra Costa County?

Prices were available within the past 7 days and start at ₩464,100 for one-way flights and ₩687,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Jan 21 - Sun, Jan 25
ICN
Seoul
SFO
San Francisco
₩687,500 Roundtrip, found 2 hours ago
₩687,500
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Wed, Jan 21 from Seoul to San Francisco, returning Sun, Jan 25, priced at ₩687,500 found 2 hours ago
Air Canada
Wed, Jan 21 - Sun, Jan 25
ICN
Seoul
SFO
San Francisco
₩687,500 Roundtrip, found 2 hours ago
₩687,500
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Wed, Jan 21 from Seoul to San Francisco, returning Sun, Jan 25, priced at ₩687,500 found 2 hours ago
Hawaiian Airlines
Thu, Dec 18 - Fri, Jan 2
ICN
Seoul
SFO
San Francisco
₩707,900 Roundtrip, found 7 hours ago
₩707,900
Roundtrip
found 7 hours ago
Select Hawaiian Airlines flight, departing Thu, Dec 18 from Seoul to San Francisco, returning Fri, Jan 2, priced at ₩707,900 found 7 hours ago
Alaska Airlines
Sun, Dec 21 - Thu, Jan 1
ICN
Seoul
SFO
San Francisco
₩707,900 Roundtrip, found 1 day ago
₩707,900
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sun, Dec 21 from Seoul to San Francisco, returning Thu, Jan 1, priced at ₩707,900 found 1 day ago
American Airlines
Fri, Feb 6 - Mon, Feb 16
ICN
Seoul
SFO
San Francisco
₩718,600 Roundtrip, found 15 hours ago
₩718,600
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Fri, Feb 6 from Seoul to San Francisco, returning Mon, Feb 16, priced at ₩718,600 found 15 hours ago
United
Mon, Jan 26 - Mon, Feb 2
ICN
Seoul
SFO
San Francisco
₩733,000 Roundtrip, found 1 hour ago
₩733,000
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Jan 26 from Seoul to San Francisco, returning Mon, Feb 2, priced at ₩733,000 found 1 hour ago
Air Premia
Fri, Apr 17 - Wed, Apr 29
ICN
Seoul
SFO
San Francisco
₩735,100 Roundtrip, found 4 hours ago
₩735,100
Roundtrip
found 4 hours ago
Select Air Premia flight, departing Fri, Apr 17 from Seoul to San Francisco, returning Wed, Apr 29, priced at ₩735,100 found 4 hours ago
United
Sat, Jan 24 - Mon, Jan 26
ICN
Seoul
SJC
San Jose
₩787,700 Roundtrip, found 10 hours ago
₩787,700
Roundtrip
found 10 hours ago
Select United flight, departing Sat, Jan 24 from Seoul to San Jose, returning Mon, Jan 26, priced at ₩787,700 found 10 hours ago
Delta
Wed, Dec 17 - Wed, Dec 31
ICN
Seoul
SFO
San Francisco
₩924,900 Roundtrip, found 3 hours ago
₩924,900
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Dec 17 from Seoul to San Francisco, returning Wed, Dec 31, priced at ₩924,900 found 3 hours ago
Philippine Airlines
Tue, Sep 15 - Wed, Sep 30
ICN
Seoul
SFO
San Francisco
₩964,800 Roundtrip, found 6 hours ago
₩964,800
Roundtrip
found 6 hours ago
Select Philippine Airlines flight, departing Tue, Sep 15 from Seoul to San Francisco, returning Wed, Sep 30, priced at ₩964,800 found 6 hours ago

About Contra Costa County

Expedia offers flights to Contra Costa County to meet every traveler'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 ₩687,500. 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 ₩687,500 and ₩964,800. If you were traveling one way out of Seoul (ICN), you could have picked up a bargain from just ₩464,100.
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 ₩687,500 to ₩964,800 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 55ºF to 80ºF 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, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Jan 21 - Sun, Jan 25
ICN
Seoul
SFO
San Francisco
₩687,500 Roundtrip, found 2 hours ago
₩687,500
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Wed, Jan 21 from Seoul to San Francisco, returning Sun, Jan 25, priced at ₩687,500 found 2 hours ago
*Available to Expedia members.