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Kos

$384+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KGS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 12, 2025.

Round-trip from

$1,350
(Kiwi.com)

One-way from

$384
(Kiwi.com)
From San Francisco to Kos
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One-way flight from San Francisco to Kos
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Find 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 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Thu 6/264:05 pmSFO - KGS
1 stop33h 50mMultiple Airlines
Fri 7/186:00 amKGS - SFO
2 stops36h 29mMultiple Airlines
Deal found 6/10$1,350
This SWISS deal was found by Cheapflights users on 6/10. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/257:30 pmSFO - KGS
1 stop33h 00mSWISS
Fri 8/13:55 pmKGS - SFO
1 stop34h 15mSWISS
Deal found 6/10$1,488
This Austrian Airlines deal was found by Cheapflights users on 6/11. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/269:05 pmSFO - KGS
2 stops50h 10mAustrian Airlines
Sat 8/26:45 pmKGS - SFO
2 stops34h 30mAustrian Airlines
Deal found 6/11$1,722
This Brussels Airlines deal was found by Cheapflights users on 6/11. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/269:05 pmSFO - KGS
2 stops27h 20mBrussels Airlines
Sat 8/28:35 pmKGS - SFO
2 stops26h 05mBrussels Airlines
Deal found 6/11$1,764
This KAYAK deal was found by Cheapflights users on 6/10. 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 6/269:05 pmSFO - KGS
1 stop36h 20mLufthansa
Sat 7/199:40 amKGS - SFO
1 stop20h 10mLufthansa
Deal found 6/10$2,059

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 12, 2025.
Use the filters below to find and compare flights from San Francisco to Kos that are best for you.

Fly from

San Francisco

Fly to

Kos

Route

Depart

Return

Price

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/26

4:05 pm-11:55 am

1 stop33h 50m

Kos

Fri 7/18

6:00 am-8:29 am

2 stops36h 29m

$1,350

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 7/25

7:30 pm-2:30 pm

1 stop33h 00m

Kos

Fri 8/1

3:55 pm-4:10 pm

1 stop34h 15m

$1,488

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 7/26

9:05 pm-9:15 am

2 stops50h 10m

Kos

Sat 8/2

6:45 pm-7:15 pm

2 stops34h 30m

$1,722

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 7/26

9:05 pm-10:25 am

2 stops27h 20m

Kos

Sat 8/2

8:35 pm-12:40 pm

2 stops26h 05m

$1,764

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/26

9:05 pm-7:25 pm

1 stop36h 20m

Kos

Sat 7/19

9:40 am-7:50 pm

1 stop20h 10m

$2,059

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 8/2

4:03 pm-9:55 pm

2 stops43h 52m

$384

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 8/2

7:30 pm-10:10 am

1 stop28h 40m

$656

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Kos

Rainfall in Kos by month

Plan your trip to Kos by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kos ranges from 0.1 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. July is typically the driest time to visit Kos when rainfall is around 0.1 in.

Temperature in Kos by month

Plan your trip to Kos by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kos, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated June 12, 2025.
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Entertainment

6.8

Comfort

7.3

Food

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Austrian Airlines
7.6
Good
802 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Entertainment

6.8

Comfort

7.3

Food

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
SWISS
7.5
Good
1,623 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Entertainment

6.8

Comfort

7.3

Food

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Brussels Airlines
7.4
Good
355 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Entertainment

6.8

Comfort

7.3

Food

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Lufthansa
6.8
Okay
7,139 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Entertainment

6.8

Comfort

7.3

Food

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

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.

  • What are the cheapest airlines flying from San Francisco to Kos round-trip?

    Currently priced at $1,488, SWISS will fly you from San Francisco to Kos and back. In addition to SWISS, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Austrian Airlines and Brussels Airlines - these airlines can fly you to your destination from $1,722 and $1,764, respectively.

  • 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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