$340+ Cheap flights from San Francisco (SFO) to Kos (KGS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KGS
Sep 3 — Sep 101
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Kos with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Kos
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Best
Last-minute
One-way
Cheapest flights from San Francisco to KosExplore 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 August 4, 2026.
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 August 4, 2026.
This Booking.com deal was found by Cheapflights users on 7/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:05 pm
SFO
- KGS
2 stops29h 35m
Multiple Airlines
Mon 9/218:50 pm
KGS
- SFO
2 stops25h 50m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$946
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:46 am
SFO
- KGS
2 stops22h 19m
Multiple Airlines
Tue 9/88:30 pm
KGS
- SFO
1 stop29h 45m
Multiple Airlines
Deal found 8/3![Multiple Airlines logo]()
$1,004
This Ovago deal was found by Cheapflights users on 7/31. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:25 pm
SFO
- KGS
1 stop19h 15m
SWISS
Mon 9/2111:00 am
KGS
- SFO
1 stop39h 15m
SWISS
Deal found 7/31![SWISS logo]()
$1,029
This Gotogate deal was found by Cheapflights users on 8/3. 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.
Tue 9/17:35 pm
SFO
- KGS
1 stop28h 35m
SWISS
Tue 9/88:30 pm
KGS
- SFO
1 stop29h 45m
SWISS
Deal found 8/3![SWISS logo]()
$1,164
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:35 pm
SFO
- KGS
1 stop32h 55m
Multiple Airlines
Sun 8/910:00 am
KGS
- SFO
2 stops43h 00m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$1,300
This KAYAK deal was found by Cheapflights users on 7/30. 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.
Fri 7/312:40 pm
SFO
- KGS
2 stops19h 55m
Austrian Airlines
Sun 8/910:00 am
KGS
- SFO
2 stops60h 40m
Austrian Airlines
Deal found 7/30![Austrian Airlines logo]()
$1,437
Best flights from San Francisco to KosDiscover carefully curated flight deals from San Francisco to Kos that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 4, 2026.
Discover carefully curated flight deals from San Francisco to Kos that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 4, 2026.
This Booking.com deal was found by Cheapflights users on 7/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:05 pm
SFO
- KGS
2 stops29h 35m
Multiple Airlines
Mon 9/218:50 pm
KGS
- SFO
2 stops25h 50m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$946
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:46 am
SFO
- KGS
2 stops22h 19m
Multiple Airlines
Tue 9/88:30 pm
KGS
- SFO
1 stop29h 45m
Multiple Airlines
Deal found 8/3![Multiple Airlines logo]()
$1,004
This Emirates deal was found by Cheapflights users on 7/30. 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 9/134:40 pm
SFO
- KGS
2 stops62h 50m
Emirates
Sun 9/201:05 pm
KGS
- SFO
2 stops34h 55m
Emirates
Deal found 7/30![Emirates logo]()
$9,137
Last-minute flights from San Francisco to KosDiscover last-minute flight deals from San Francisco to Kos. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Kos. Data last updated August 4, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:46 am
SFO
- KGS
2 stops22h 19m
Multiple Airlines
Tue 9/88:30 pm
KGS
- SFO
1 stop29h 45m
Multiple Airlines
Deal found 8/3![Multiple Airlines logo]()
$1,004
This Gotogate deal was found by Cheapflights users on 8/3. 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.
Tue 9/17:35 pm
SFO
- KGS
1 stop28h 35m
SWISS
Tue 9/88:30 pm
KGS
- SFO
1 stop29h 45m
SWISS
Deal found 8/3![SWISS logo]()
$1,164
This Emirates deal was found by Cheapflights users on 7/30. 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 9/134:40 pm
SFO
- KGS
2 stops62h 50m
Emirates
Sun 9/201:05 pm
KGS
- SFO
2 stops34h 55m
Emirates
Deal found 7/30![Emirates logo]()
$9,137
This Booking.com deal was found by Cheapflights users on 7/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:05 pm
SFO
- KGS
2 stops29h 35m
Multiple Airlines
Mon 9/218:50 pm
KGS
- SFO
2 stops25h 50m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$946
This Ovago deal was found by Cheapflights users on 7/31. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:25 pm
SFO
- KGS
1 stop19h 15m
SWISS
Mon 9/2111:00 am
KGS
- SFO
1 stop39h 15m
SWISS
Deal found 7/31![SWISS logo]()
$1,029
One-way flights from San Francisco to KosSearch for one-way flight options from San Francisco to Kos. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
Search for one-way flight options from San Francisco to Kos. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Wed 8/127:35 pm
SFO
- KGS
1 stop33h 35m
SWISS
Deal found 8/1![SWISS logo]()
$340
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Wed 8/129:05 pm
SFO
- KGS
2 stops37h 45m
Austrian Airlines
Deal found 8/1![Austrian Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:00 pm
SFO
- KGS
3 stops57h 05m
Multiple Airlines
Deal found 8/3![Multiple Airlines logo]()
$367
This United deal was found by Cheapflights users on 8/1. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:00 am
SFO
- KGS
2 stops25h 25m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$388
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Thu 8/138:15 am
SFO
- KGS
2 stops38h 35m
Lufthansa
Deal found 8/1![Lufthansa logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:30 pm
SFO
- KGS
3 stops42h 30m
Multiple Airlines
Deal found 8/3![Multiple Airlines logo]()
$444
This British Airways deal was found by Cheapflights users on 8/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/134:35 pm
SFO
- KGS
1 stop34h 40m
British Airways
Deal found 8/1![British Airways logo]()
$448
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Fri 8/149:05 pm
SFO
- KGS
2 stops49h 50m
Lufthansa
Deal found 8/1![Lufthansa logo]()
$470
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:46 am
SFO
- KGS
2 stops22h 19m
Lufthansa
Deal found 8/3![Lufthansa logo]()
$471
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 August 4, 2026.
Round-trip from | $946 (Booking.com) |
|---|---|
One-way from | $340 (KAYAK) |
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 August 4, 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
Cheapest round-trip
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Mon 9/14
9:05 pm-12:40 pm
2 stops29h 35m
Kos
Mon 9/21
8:50 pm-12:40 pm
2 stops25h 50m
$946
Quickest round-trip
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Tue 9/1
10:46 am-7:05 pm
2 stops22h 19m
Kos
Tue 9/8
8:30 pm-4:15 pm
1 stop29h 45m
$1,004
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Sun 9/13
4:40 pm-5:30 pm
2 stops62h 50m
Kos
Sun 9/20
1:05 pm-2:00 pm
2 stops34h 55m
$9,137
Cheapest one-way
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Wed 8/12
9:05 pm-8:50 pm
2 stops37h 45m
$365
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Thu 8/13
5:00 am-4:25 pm
2 stops25h 25m
$388
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Sat 10/10
1:00 pm-8:15 pm
2 stops21h 15m
$423
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Thu 8/13
4:35 pm-1:15 pm
1 stop34h 40m
$448
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Fri 10/9
5:35 pm-9:00 pm
2 stops41h 25m
$452
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Tue 9/1
10:46 am-7:05 pm
2 stops22h 19m
$471
Quickest one-way
San FranciscoKos
SFO - KGS
SFOKGS
San Francisco
Fri 8/14
2:20 pm-8:00 pm
1 stop19h 40m
$500
Showing 1-10 of 12 resultsSorted 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.
SFO-KGS
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
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