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Cheap flights from California to Kos from $1,361

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from California to Kos departing on 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from California to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:45 pm - 5:35 pmSFO-KGS
17h 50m2 stops
Multiple Airlines Logo
6:00 am - 2:35 pmKGS-SFO
18h 35m2 stops
$1,361Multiple Airlines
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Mon, May 4 - Thu, May 14
Emirates Logo
3:40 pm - 5:05 pmSFO-KGS
39h 25m2 stops
Emirates Logo
12:35 pm - 12:50 pmKGS-SFO
34h 15m2 stops
$2,412Emirates
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Fri, Dec 5 - Tue, Dec 9
Multiple Airlines Logo
8:25 pm - 7:50 amSFO-KGS
26h 25m2 stops
Multiple Airlines Logo
8:45 pm - 1:40 pmKGS-SFO
50h 55m2 stops
$5,453Multiple Airlines
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Fri, Mar 27 - Sat, Apr 4
Multiple Airlines Logo
10:40 pm - 7:50 amSFO-KGS
24h 10m2 stops
Multiple Airlines Logo
8:45 pm - 1:40 pmKGS-SFO
50h 55m2 stops
$5,457Multiple Airlines
Find Deal
Fri, Mar 27 - Sat, Apr 4
Multiple Airlines Logo
8:25 pm - 7:50 amSFO-KGS
26h 25m2 stops
Multiple Airlines Logo
8:45 pm - 4:10 pmKGS-SFO
29h 25m1 stop
$5,527Multiple Airlines
Find Deal
Fri, Mar 27 - Sat, Apr 4
Multiple Airlines Logo
8:25 pm - 7:50 amSFO-KGS
26h 25m2 stops
Multiple Airlines Logo
8:45 pm - 1:40 pmKGS-SFO
50h 55m2 stops
$5,766Multiple Airlines
Find Deal
Fri, Mar 27 - Sat, Apr 4

momondo Fare Finder

 
Customize your flight search to find flights from California to Kos that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from California to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Mon 5/4

1:45 pm-5:35 pm

2 stops17h 50m

Kos

Thu 5/14

6:00 am-2:35 pm

2 stops18h 35m

$1,361

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 12/5

3:40 pm-5:05 pm

2 stops39h 25m

Kos

Tue 12/9

12:35 pm-12:50 pm

2 stops34h 15m

$2,412

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 3/27

8:25 pm-7:50 am

2 stops26h 25m

Kos

Sat 4/4

8:45 pm-1:40 pm

2 stops50h 55m

$5,453

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 3/27

10:40 pm-7:50 am

2 stops24h 10m

Kos

Sat 4/4

8:45 pm-1:40 pm

2 stops50h 55m

$5,457

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 3/27

8:25 pm-7:50 am

2 stops26h 25m

Kos

Sat 4/4

8:45 pm-4:10 pm

1 stop29h 25m

$5,527

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 3/27

8:25 pm-7:50 am

2 stops26h 25m

Kos

Sat 4/4

8:45 pm-1:40 pm

2 stops50h 55m

$5,766

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from California to Kos

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to Kos?

On average, it takes 17h 50m to fly from California to Kos if you fly out of San Francisco (the most popular airport in California) and into Kos (the most popular airport in Kos). If you’re flying out of San Jose and into Kos, then the flight time is around 22h 20m.

Cheap California to Kos flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from California to Kos

Direct flights

None
There are no direct flights from California to Kos. There are no popular flight routes from California to Kos.
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  • When did momondo last update prices for flights from California to Kos Airport?

    Prices for flights from California to Kos Airport refresh daily.

  • How many operators does momondo search for flights from California to Kos Airport?

  • How old do you have to be to fly from California to Kos Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Kos Airport.

  • What documentation or ID do you need to fly to Kos Airport?

    The required travel and health documents for your Kos Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kos Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from California to Kos

Compare and see reviews for airlines that fly from California to Kos with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $602Free CancellationRating
6.8
7,558 reviews
Search Lufthansa flights

Traveling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Kardamena
Marmari

Why use momondo?

Why should I use momondo to find a flight deal from California to Kos?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from California to Kos. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from California to Kos with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Kos from California with this policy.

How can momondo help me find flights from California to Kos?

momondo provides multiple filters to help you find the best flight to Kos from California. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from California to Kos right now. Can momondo alert me if prices change?

Yes. momondo can track prices for California to Kos flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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