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Kos

$1,276+ Cheap flights from San Francisco (SFO) to Kos (KGS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KGS
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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Cheap flight deals from San Francisco to Kos

Cheapest flights from San Francisco to Kos
Explore the most affordable flight options available from San Francisco to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.

This KAYAK deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/32:40 pm
SFO
-
KGS
2 stops57h 45m
Brussels Airlines
Sun 5/1011:25 am
KGS
-
SFO
2 stops59h 15m
Brussels Airlines
Deal found 4/4$1,276
This FlightHub deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/32:40 pm
SFO
-
KGS
2 stops23h 55m
Multiple Airlines
Sun 5/1011:25 am
KGS
-
SFO
2 stops59h 15m
Multiple Airlines
Deal found 4/6$1,410
This Gotogate deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2810:07 am
SFO
-
KGS
2 stops24h 38m
British Airways
Sun 7/128:40 pm
KGS
-
SFO
2 stops38h 19m
British Airways
Deal found 4/6$1,599
This BusinessClass deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/289:05 pm
SFO
-
KGS
2 stops26h 10m
Multiple Airlines
Sun 7/123:15 pm
KGS
-
SFO
1 stop35h 20m
Multiple Airlines
Deal found 4/6$1,646
This Emirates deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:05 pm
SFO
-
KGS
2 stops38h 25m
Emirates
Thu 9/36:10 pm
KGS
-
SFO
2 stops53h 50m
Emirates
Deal found 4/4$1,764

Find flight deals from San Francisco to Kos

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Kos (KGS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 10, 2026.

Round-trip from

$1,276
(KAYAK)
From San Francisco to Kos
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
Use the filters below to find and compare flights from San Francisco to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sun 5/3

2:40 pm-10:25 am

2 stops57h 45m

Kos

Sun 5/10

11:25 am-12:40 pm

2 stops59h 15m

$1,276

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Mon 8/31

5:05 pm-5:30 pm

2 stops38h 25m

Kos

Thu 9/3

6:10 pm-2:00 pm

2 stops53h 50m

$1,764

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sun 5/3

1:15 pm-6:45 pm

1 stop19h 30m

Kos

Sun 5/10

11:25 am-12:40 pm

2 stops35h 15m

$1,838
Quickest round-trip

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 6/27

11:37 am-7:50 pm

2 stops22h 13m

Kos

Sun 7/12

8:40 pm-1:50 pm

1 stop27h 10m

$2,863

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

1:35 pm-1:15 pm

2 stops37h 40m

Kos

Fri 7/10

1:40 pm-1:50 pm

1 stop34h 10m

$2,863

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 6/27

10:15 am-7:50 pm

2 stops23h 35m

Kos

Sat 7/11

2:05 pm-10:14 pm

2 stops42h 09m

$2,873

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 6/26

8:43 pm-7:50 pm

2 stops37h 07m

Kos

Fri 7/10

1:40 pm-6:03 pm

2 stops38h 23m

$2,882

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Sorted by cheapest first

Best time to book a flight from San Francisco to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Francisco to Kos?

    Brussels Airlines and Emirates can get you from San Francisco to Kos in just under 38h 25m. Your travel time can differ by up to 19h 20m. The distance between San Francisco and Kos is about 6932 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from San Francisco to Kos that include hotel bookings?

    Yes. In addition to deals on San Francisco to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Kos.

  • Can I find deals for business class flights from San Francisco to Kos?

    Yes. Cheapflights offers flight deals from San Francisco to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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