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Kos

$1,551+ 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KGS
Jul 18 — Jul 251
Sat 7/18
Sat 7/25
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 June 18, 2026.

This Justfly.com deal was found by Cheapflights users on 6/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:30 pm
SFO
-
KGS
2 stops37h 35m
Multiple Airlines
Mon 8/2411:00 am
KGS
-
SFO
1 stop39h 15m
Multiple Airlines
Deal found 6/17$1,551
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:05 pm
SFO
-
KGS
2 stops29h 35m
Lufthansa
Mon 8/2412:40 pm
KGS
-
SFO
2 stops34h 00m
Lufthansa
Deal found 6/16$1,588
This Emirates deal was found by Cheapflights users on 6/13. 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.
Sun 9/65:05 pm
SFO
-
KGS
2 stops38h 25m
Emirates
Wed 9/96:10 pm
KGS
-
SFO
2 stops29h 50m
Emirates
Deal found 6/13$1,867
This Emirates deal was found by Cheapflights users on 6/14. 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.
Sun 8/235:05 pm
SFO
-
KGS
2 stops38h 25m
Emirates
Thu 8/276:10 pm
KGS
-
SFO
2 stops29h 50m
Emirates
Deal found 6/14$1,898

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 June 18, 2026.

Round-trip from

$1,167
(FlightHub)
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 June 18, 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
Quickest round-trip

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sun 9/6

5:05 pm-5:30 pm

2 stops38h 25m

Kos

Wed 9/9

6:10 pm-2:00 pm

2 stops29h 50m

$1,867

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sun 8/23

5:05 pm-5:30 pm

2 stops38h 25m

Kos

Thu 8/27

6:10 pm-2:00 pm

2 stops29h 50m

$1,898

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Tue 7/14

5:05 pm-5:30 pm

2 stops38h 25m

Kos

Mon 7/20

12:35 pm-2:00 pm

2 stops35h 25m

$3,009

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 8/1

5:05 pm-5:30 pm

2 stops62h 25m

Kos

Sat 8/8

6:10 pm-2:00 pm

2 stops53h 50m

$3,809

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 7/31

5:05 pm-5:30 pm

2 stops62h 25m

Kos

Fri 8/7

6:10 pm-2:00 pm

2 stops29h 50m

$3,970

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Wed 7/29

5:05 pm-5:30 pm

2 stops38h 25m

Kos

Wed 8/5

12:35 pm-2:00 pm

2 stops35h 25m

$4,164

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 7/30

5:05 pm-5:30 pm

2 stops62h 25m

Kos

Thu 8/6

12:35 pm-2:00 pm

2 stops35h 25m

$4,214

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

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?

    Emirates can get you from San Francisco to Kos in just under 38h 25m. Your travel time can differ by up to . The distance between San Francisco and Kos is about 6932 mi.

  • 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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