$1,040+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KGS
Oct 12 — Oct 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
Best
Last-minute
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 September 12, 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 September 12, 2026.
This Justfly.com deal was found by Cheapflights users on 9/12. 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.
Tue 9/227:35 pm -
1 stop28h 35m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/12![Multiple Airlines logo]()
$1,040
This KAYAK deal was found by Cheapflights users on 9/12. 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.
Tue 9/229:05 pm -
2 stops37h 15m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/12![Austrian Airlines logo]()
$1,073
This Gotogate deal was found by Cheapflights users on 9/8. 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 11/248:25 am -
2 stops19h 10m
Mon 11/308:35 pm -
2 stops26h 00m
Deal found 9/8![Multiple Airlines logo]()
$1,109
This Expedia deal was found by Cheapflights users on 9/11. 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.
Wed 9/2311:39 pm -
2 stops30h 46m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/11![Multiple Airlines logo]()
$1,131
This Expedia deal was found by Cheapflights users on 9/9. 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.
Thu 9/2412:05 am -
2 stops33h 30m
Tue 10/68:30 pm -
1 stop29h 45m
Deal found 9/9![Multiple Airlines logo]()
$1,137
This Orbitz deal was found by Cheapflights users on 9/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:10 am -
2 stops26h 40m
Fri 10/25:20 pm -
2 stops35h 48m
Deal found 9/9![Multiple Airlines logo]()
$1,235
This SmartFares deal was found by Cheapflights users on 9/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:35 pm -
1 stop33h 35m
Thu 10/111:00 am -
1 stop39h 15m
Deal found 9/11![SWISS logo]()
$1,263
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 September 12, 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 September 12, 2026.
This Justfly.com deal was found by Cheapflights users on 9/12. 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.
Tue 9/227:35 pm -
1 stop28h 35m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/12![Multiple Airlines logo]()
$1,040
This Expedia deal was found by Cheapflights users on 9/9. 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.
Thu 9/2412:05 am -
2 stops33h 30m
Tue 10/68:30 pm -
1 stop29h 45m
Deal found 9/9![Multiple Airlines logo]()
$1,137
This Expedia deal was found by Cheapflights users on 9/11. 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.
Wed 9/2311:39 pm -
2 stops30h 46m
Thu 10/111:00 am -
1 stop39h 15m
Deal found 9/11![Multiple Airlines logo]()
$1,178
This Orbitz deal was found by Cheapflights users on 9/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:10 am -
2 stops26h 40m
Fri 10/25:20 pm -
2 stops35h 48m
Deal found 9/9![Multiple Airlines logo]()
$1,235
This Booking.com deal was found by Cheapflights users on 9/8. 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.
Tue 11/248:25 am -
3 stops25h 40m
Mon 11/302:05 pm -
3 stops35h 30m
Deal found 9/8![Multiple Airlines logo]()
$1,312
Last-minute flights from San Francisco to KosDiscover last-minute flight deals from San Francisco to Kos. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Kos. Data last updated September 12, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 9/12. 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.
Tue 9/227:35 pm -
1 stop28h 35m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/12![Multiple Airlines logo]()
$1,040
This KAYAK deal was found by Cheapflights users on 9/12. 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.
Tue 9/229:05 pm -
2 stops37h 15m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/12![Austrian Airlines logo]()
$1,073
This Expedia deal was found by Cheapflights users on 9/11. 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.
Wed 9/2311:39 pm -
2 stops30h 46m
Thu 10/19:10 pm -
2 stops31h 57m
Deal found 9/11![Multiple Airlines logo]()
$1,131
This SmartFares deal was found by Cheapflights users on 9/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:35 pm -
1 stop33h 35m
Thu 10/111:00 am -
1 stop39h 15m
Deal found 9/11![SWISS logo]()
$1,263
This Expedia deal was found by Cheapflights users on 9/9. 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.
Thu 9/2412:05 am -
2 stops33h 30m
Tue 10/68:30 pm -
2 stops32h 01m
Deal found 9/9![Multiple Airlines logo]()
$1,137
This Orbitz deal was found by Cheapflights users on 9/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:10 am -
2 stops26h 40m
Fri 10/25:20 pm -
2 stops35h 48m
Deal found 9/9![Multiple Airlines logo]()
$1,235
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 September 12, 2026.
Round-trip from | $1,040 (FlightHub) |
|---|
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 7,457,451 searches. Data last updated September 12, 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
Quickest round-trip
San FranciscoKos
SFO San Francisco - KGS Kos
SFOKGS
San Francisco
Tue 9/22
7:35 pm-10:10 am
1 stop28h 35m
Kos
Thu 10/1
9:10 pm-7:07 pm
2 stops31h 57m
$1,040
San FranciscoKos
SFO San Francisco - KGS Kos
SFOKGS
San Francisco
Thu 9/24
12:05 am-7:35 pm
2 stops33h 30m
Kos
Tue 10/6
8:30 pm-4:15 pm
1 stop29h 45m
$1,137
San FranciscoKos
SFO San Francisco - KGS Kos
SFOKGS
San Francisco
Wed 9/23
11:39 pm-4:25 pm
2 stops30h 46m
Kos
Thu 10/1
11:00 am-4:15 pm
1 stop39h 15m
$1,178
San FranciscoKos
SFO San Francisco - KGS Kos
SFOKGS
San Francisco
Thu 9/24
8:10 am-8:50 pm
2 stops26h 40m
Kos
Fri 10/2
5:20 pm-7:08 pm
2 stops35h 48m
$1,235
San FranciscoKos
SFO San Francisco - KGS Kos
SFOKGS
San Francisco
Tue 11/24
8:25 am-8:05 pm
3 stops25h 40m
Kos
Mon 11/30
2:05 pm-3:35 pm
3 stops35h 30m
$1,312
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.
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
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Kos flight routes
Other flight options
Other flights from San Francisco
Popular flights