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Cheap flights from San Francisco to Kos from $3,623

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Kos departing on 5/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from San Francisco to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Emirates Logo
5:05 pm - 5:35 pm
SFO
-
KGS
38h 30m
2 stops
Emirates Logo
6:05 pm - 2:00 pm
KGS
-
SFO
29h 55m
2 stops
$3,623Emirates
Fri, May 8 - Fri, May 15
Emirates Logo
5:05 pm - 5:35 pm
SFO
-
KGS
62h 30m
2 stops
Emirates Logo
1:05 pm - 2:00 pm
KGS
-
SFO
34h 55m
2 stops
$5,680Emirates
Mon, May 11 - Mon, May 18
Emirates Logo
5:05 pm - 5:35 pm
SFO
-
KGS
62h 30m
2 stops
Emirates Logo
1:05 pm - 2:00 pm
KGS
-
SFO
58h 55m
2 stops
$6,105Emirates
Sat, May 9 - Sat, May 16
Multiple Airlines Logo
2:40 pm - 8:50 pm
SFO
-
KGS
20h 10m
2 stops
Multiple Airlines Logo
3:15 pm - 4:15 pm
KGS
-
SFO
35h 00m
1 stop
$6,790Multiple Airlines
Thu, Jun 25 - Sun, Jul 12
Multiple Airlines Logo
2:40 pm - 8:50 pm
SFO
-
KGS
20h 10m
2 stops
Multiple Airlines Logo
9:40 am - 12:32 am
KGS
-
SFO
24h 52m
2 stops
$6,844Multiple Airlines
Thu, Jun 25 - Sat, Jul 11
Multiple Airlines Logo
2:40 pm - 8:50 pm
SFO
-
KGS
20h 10m
2 stops
Multiple Airlines Logo
9:40 am - 12:40 pm
KGS
-
SFO
37h 00m
1 stop
$6,859Multiple Airlines
Thu, Jun 25 - Sat, Jul 11
Austrian Airlines Logo
2:40 pm - 8:50 pm
SFO
-
KGS
20h 10m
2 stops
Austrian Airlines Logo
9:40 pm - 12:40 pm
KGS
-
SFO
25h 00m
2 stops
$6,861Austrian Airlines
Thu, Jun 25 - Fri, Jul 10
Multiple Airlines Logo
2:40 pm - 8:50 am
SFO
-
KGS
32h 10m
1 stop
Multiple Airlines Logo
3:15 pm - 4:15 pm
KGS
-
SFO
35h 00m
1 stop
$6,896Multiple Airlines
Thu, Jun 25 - Sun, Jul 12
Lufthansa Logo
2:40 pm - 8:50 am
SFO
-
KGS
32h 10m
1 stop
Lufthansa Logo
9:40 am - 12:40 pm
KGS
-
SFO
37h 00m
1 stop
$6,929Lufthansa
Thu, Jun 25 - Sat, Jul 11
Multiple Airlines Logo
2:40 pm - 8:50 am
SFO
-
KGS
32h 10m
1 stop
Multiple Airlines Logo
9:40 pm - 12:40 pm
KGS
-
SFO
25h 00m
2 stops
$6,930Multiple Airlines
Thu, Jun 25 - Fri, Jul 10

Emirates flights from San Francisco to Kos

Our best Emirates deals on San Francisco to Kos flight tickets
Emirates
Sep 6
SFO5:05 pmSan Francisco
62h 25m
2 stops
KGS5:30 pmKos
Sep 10
KGS1:05 pmKos
34h 55m
2 stops
SFO2:00 pmSan Francisco
$1,767
Emirates
Sep 6
SFO5:05 pmSan Francisco
38h 25m
2 stops
KGS5:30 pmKos
Sep 10
KGS1:05 pmKos
34h 55m
2 stops
SFO2:00 pmSan Francisco
$1,870
Emirates
May 8
SFO5:05 pmSan Francisco
38h 30m
2 stops
KGS5:35 pmKos
May 15
KGS6:05 pmKos
29h 55m
2 stops
SFO2:00 pmSan Francisco
$3,623

Condor flights from San Francisco to Kos

Our best Condor deals on San Francisco to Kos flight tickets
Condor
Jun 29
SFO4:30 pmSan Francisco
16h 35m
1 stop
KGS7:05 pmKos
Jul 14
KGS11:10 amKos
37h 20m
1 stop
SFO2:30 pmSan Francisco
$8,485
Condor
Jun 29
SFO4:30 pmSan Francisco
16h 35m
1 stop
KGS7:05 pmKos
Jul 12
KGS11:15 amKos
37h 15m
1 stop
SFO2:30 pmSan Francisco
$11,019
Condor
Jun 29
SFO4:30 pmSan Francisco
16h 35m
1 stop
KGS7:05 pmKos
Jul 9
KGS11:25 amKos
37h 05m
1 stop
SFO2:30 pmSan Francisco
$11,059

momondo 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, momondo users made 832,500 searches. Data last updated March 27, 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

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 5/8

5:05 pm-5:35 pm

2 stops38h 30m

Kos

Fri 5/15

6:05 pm-2:00 pm

2 stops29h 55m

$3,623

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Mon 5/11

5:05 pm-5:35 pm

2 stops62h 30m

Kos

Mon 5/18

1:05 pm-2:00 pm

2 stops34h 55m

$5,680

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Sat 5/9

5:05 pm-5:35 pm

2 stops62h 30m

Kos

Sat 5/16

1:05 pm-2:00 pm

2 stops58h 55m

$6,105

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 pm

2 stops20h 10m

Kos

Sun 7/12

3:15 pm-4:15 pm

1 stop35h 00m

$6,790
Quickest round-trip

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 pm

2 stops20h 10m

Kos

Sat 7/11

9:40 am-12:32 am

2 stops24h 52m

$6,844

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 pm

2 stops20h 10m

Kos

Sat 7/11

9:40 am-12:40 pm

1 stop37h 00m

$6,859

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 pm

2 stops20h 10m

Kos

Fri 7/10

9:40 pm-12:40 pm

2 stops25h 00m

$6,861

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 am

1 stop32h 10m

Kos

Sun 7/12

3:15 pm-4:15 pm

1 stop35h 00m

$6,896

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 am

1 stop32h 10m

Kos

Sat 7/11

9:40 am-12:40 pm

1 stop37h 00m

$6,929

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Thu 6/25

2:40 pm-8:50 am

1 stop32h 10m

Kos

Fri 7/10

9:40 pm-12:40 pm

2 stops25h 00m

$6,930

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from San Francisco to Kos

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Kos according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Kos (SFO to KGS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Kos

Fastest flight time

62h 25m

Direct flights

None
The fastest flight from San Francisco to Kos takes 62h 25m
There are no direct flights from San Francisco to Kos. There are no popular flight routes from San Francisco to Kos.
Search flight deals

  • How far is San Francisco to Kos by plane?

    There are 6921.7 mi between San Francisco and Kos. In terms of flight time, this usually takes a little over 62h 25m.

  • When did momondo last update prices for flights from San Francisco Airport to Kos Airport?

    Prices for flights from San Francisco Airport to Kos Airport refresh daily.

  • How old do you have to be to fly from San Francisco Airport to Kos Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Kos Airport.

  • What documentation or ID do you need to fly to Kos Airport?

    The necessary travel and health documents for your Kos Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from San Francisco to Kos?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to San Francisco from Kos. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from San Francisco to Kos with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Kardamena
Marmari

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Kos?

It is quick and easy to find San Francisco to Kos flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kos that suits you.

Can I find flights from San Francisco to Kos with flexible booking policies on momondo?

All flight searches from San Francisco to Kos on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Francisco to Kos?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kos from San Francisco.

I’m not ready to book a flight from San Francisco to Kos right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Francisco to Kos now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kos and let you know when they change.

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