Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from San Francisco to Kos from $875

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 10/13. 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

Find the cheapest flights from San Francisco to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:40 pm - 7:05 pmSFO  San Francisco-KGS Kos
18h 25m2 stops Frankfurt am Main Munich Franz Josef Strauss
Multiple Airlines Logo
8:30 pm - 4:15 pmKGS  Kos-SFO San Francisco
29h 45m1 stop Zurich
$875Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
2:25 pm - 10:10 amSFO  San Francisco-KGS Kos
33h 45m1 stop Zurich
Multiple Airlines Logo
8:30 pm - 4:15 pmKGS  Kos-SFO San Francisco
29h 45m1 stop Zurich
$921Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
2:40 pm - 7:05 pmSFO  San Francisco-KGS Kos
18h 25m2 stops Frankfurt am Main Munich Franz Josef Strauss
Multiple Airlines Logo
8:30 pm - 3:18 pmKGS  Kos-SFO San Francisco
52h 48m2 stops Zurich Las Vegas Harry Reid Intl
$959Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
2:40 pm - 8:50 pmSFO  San Francisco-KGS Kos
20h 10m2 stops Frankfurt am Main Vienna Intl
Multiple Airlines Logo
8:55 pm - 6:41 pmKGS  Kos-SFO San Francisco
31h 46m3 stops London Stansted Zurich Vancouver Intl
$1,290Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
7:15 am - 8:55 pmSFO  San Francisco-KGS Kos
27h 40m3 stops Los Angeles Orlando London Gatwick
Multiple Airlines Logo
2:20 pm - 8:11 pmKGS  Kos-SFO San Francisco
39h 51m3 stops London Gatwick Madrid Barajas Chicago O'Hare Intl
$1,565Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Emirates Logo
4:40 pm - 5:30 pmSFO  San Francisco-KGS Kos
62h 50m2 stops Dubai Intl Athens Eleftherios V.
Emirates Logo
6:05 pm - 2:00 pmKGS  Kos-SFO San Francisco
53h 55m2 stops Athens Eleftherios V. Dubai Intl
$1,863Emirates
Tue, Sep 22 - Tue, Sep 29
Emirates Logo
5:05 pm - 5:35 pmSFO  San Francisco-KGS Kos
62h 30m2 stops Dubai Intl Athens Eleftherios V.
Emirates Logo
6:05 pm - 2:00 pmKGS  Kos-SFO San Francisco
29h 55m2 stops Athens Eleftherios V. Dubai Intl
$1,867Emirates
Thu, Oct 15 - Mon, Oct 19

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Emirates flights from San Francisco to Kos

Our best Emirates deals on San Francisco to Kos flight tickets
Emirates
Sep 22
SFO4:40 pmSan Francisco
62h 50m
2 stops
KGS5:30 pmKos
Sep 29
KGS6:05 pmKos
53h 55m
2 stops
SFO2:00 pmSan Francisco
$1,863
Emirates
Oct 15
SFO5:05 pmSan Francisco
62h 30m
2 stops
KGS5:35 pmKos
Oct 19
KGS6:05 pmKos
29h 55m
2 stops
SFO2:00 pmSan Francisco
$1,867

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 August 10, 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
Quickest round-trip

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Tue 10/13

2:40 pm-7:05 pm

2 stops18h 25m

Kos

Tue 10/20

8:30 pm-4:15 pm

1 stop29h 45m

$875

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Tue 10/13

2:25 pm-10:10 am

1 stop33h 45m

Kos

Tue 10/20

8:30 pm-4:15 pm

1 stop29h 45m

$921

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Tue 10/13

2:40 pm-7:05 pm

2 stops18h 25m

Kos

Tue 10/20

8:30 pm-3:18 pm

2 stops52h 48m

$959

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Tue 10/13

2:40 pm-8:50 pm

2 stops20h 10m

Kos

Tue 10/20

8:55 pm-6:41 pm

3 stops31h 46m

$1,290

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Tue 10/13

7:15 am-8:55 pm

3 stops27h 40m

Kos

Tue 10/20

2:20 pm-8:11 pm

3 stops39h 51m

$1,565

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Tue 9/22

4:40 pm-5:30 pm

2 stops62h 50m

Kos

Tue 9/29

6:05 pm-2:00 pm

2 stops53h 55m

$1,863

San FranciscoKos

SFO San Francisco - KGS Kos

SFOKGS

San Francisco

Thu 10/15

5:05 pm-5:35 pm

2 stops62h 30m

Kos

Mon 10/19

6:05 pm-2:00 pm

2 stops29h 55m

$1,867

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Kos from

How to get the cheapest flight ticket from San Francisco to Kos

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on San Francisco to Kos flights?

You could potentially save up to 7% on your flight if you consider stops on a San Francisco to Kos flight.

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 30m

Direct flights

None
The fastest flight from San Francisco to Kos takes 62h 30m
There are no direct flights from San Francisco to Kos. There are no popular flight routes from San Francisco to Kos.
Search flight deals

Frequently asked questions about flying from San Francisco to Kos

  • 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 30m.

  • 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.

Traveling to a place near Kos?

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

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.

An easier way to manage your Kos trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 9/9
Wed 9/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Greece