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Kos

$449+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KGS
jun. 23 — jun. 301
lun. 6/23
lun. 6/30
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 junio 18, 2025.

Round-trip from

$1,009
(SWISS)

One-way from

$449
(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 junio 18, 2025.

This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/157:40 pmSFO - KGS
2 stops57h 30mSWISS
mar. 7/228:30 pmKGS - SFO
1 stop29h 40mSWISS
Deal found 6/17$1,009
This Austrian Airlines 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/69:05 pmSFO - KGS
2 stops37h 40mAustrian Airlines
lun. 8/118:50 pmKGS - SFO
2 stops25h 50mAustrian Airlines
Deal found 6/16$1,160
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/64:20 pmSFO - KGS
3 stops32h 25mMultiple Airlines
lun. 8/1111:10 amKGS - SFO
3 stops32h 20mMultiple Airlines
Deal found 6/16$1,284
This Emirates 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/295:05 pmSFO - KGS
2 stops38h 25mEmirates
mié. 7/211:25 amKGS - SFO
2 stops36h 35mEmirates
Deal found 6/16$2,747

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 junio 18, 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

mar. 7/15

7:40 pm-3:10 pm

2 stops57h 30m

Kos

mar. 7/22

8:30 pm-4:10 pm

1 stop29h 40m

$1,009

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

mié. 8/6

9:05 pm-8:45 pm

2 stops37h 40m

Kos

lun. 8/11

8:50 pm-12:40 pm

2 stops25h 50m

$1,160

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

mié. 8/6

4:20 pm-10:45 am

3 stops32h 25m

Kos

lun. 8/11

11:10 am-9:30 am

3 stops32h 20m

$1,284

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

dom. 6/29

5:05 pm-5:30 pm

2 stops38h 25m

Kos

mié. 7/2

11:25 am-2:00 pm

2 stops36h 35m

$2,747

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

mar. 9/2

6:00 am-11:55 pm

2 stops31h 55m

$449

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

mar. 9/2

7:30 pm-10:10 am

1 stop28h 40m

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

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 junio 18, 2025.
Emirates
8.1
Very good
3,273 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,273 reviews
Emirates
8.1
Very good
3,273 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Austrian Airlines
7.6
Good
804 reviews
Emirates
8.1
Very good
3,273 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
SWISS
7.5
Good
1,632 reviews
Emirates
8.1
Very good
3,273 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 $1,009, 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 Emirates - these airlines can fly you to your destination from $1,160 and $2,747, 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.

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