SYD - KGS

$1,900 Find Cheap Flights from Sydney to Kos – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
$1,846
Typical prices: $2,523-$3,090
Multiple Airlines
Fri 20/4Sun 20/5
SYD - KGS • 2 stops
When to travel
October
Cheapest • 21% price drop
June
Most popular
Good to know
+1
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights from Sydney to Kos (SYD-KGS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Sydney to Kos

Tue, 20 Apr - Thu, 20 May
Multiple Airlines Logo
15:40 - 21:55SYD  Sydney Kingsford Smith-KGS Kos
37h 15m2 stops Abu Dhabi Zayed Intl Athens Eleftherios V.
Multiple Airlines Logo
22:25 - 16:50KGS  Kos-SYD Sydney Kingsford Smith
35h 25m2 stops Athens Eleftherios V. Abu Dhabi Zayed Intl
$1,846Multiple Airlines
Sat, 17 Apr - Tue, 18 May
Etihad Airways Logo
20:50 - 08:05SYD  Sydney Kingsford Smith-KGS Kos
42h 15m2 stops Abu Dhabi Zayed Intl Athens Eleftherios V.
Etihad Airways Logo
08:35 - 06:10KGS  Kos-SYD Sydney Kingsford Smith
38h 35m2 stops Athens Eleftherios V. Abu Dhabi Zayed Intl
$1,900Etihad Airways
Mon, 19 Apr - Wed, 19 May
Multiple Airlines Logo
20:55 - 21:55SYD  Sydney Kingsford Smith-KGS Kos
32h 00m2 stops Doha Hamad Intl Athens Eleftherios V.
Multiple Airlines Logo
09:20 - 17:05KGS  Kos-SYD Sydney Kingsford Smith
24h 45m2 stops Athens Eleftherios V. Doha Hamad Intl
$1,957Multiple Airlines
Mon, 19 Apr - Thu, 20 May
Multiple Airlines Logo
20:55 - 17:35SYD  Sydney Kingsford Smith-KGS Kos
27h 40m2 stops Doha Hamad Intl Athens Eleftherios V.
Multiple Airlines Logo
06:00 - 17:55KGS  Kos-SYD Sydney Kingsford Smith
28h 55m2 stops Athens Eleftherios V. Doha Hamad Intl
$1,967Multiple Airlines
Mon, 19 Apr - Fri, 21 May
Multiple Airlines Logo
20:55 - 17:35SYD  Sydney Kingsford Smith-KGS Kos
27h 40m2 stops Doha Hamad Intl Athens Eleftherios V.
Multiple Airlines Logo
08:35 - 17:55KGS  Kos-SYD Sydney Kingsford Smith
26h 20m2 stops Athens Eleftherios V. Doha Hamad Intl
$2,047Multiple Airlines
Sun, 18 Apr - Fri, 21 May
Etihad Airways Logo
20:50 - 08:05SYD  Sydney Kingsford Smith-KGS Kos
42h 15m2 stops Abu Dhabi Zayed Intl Athens Eleftherios V.
Etihad Airways Logo
08:35 - 06:10KGS  Kos-SYD Sydney Kingsford Smith
62h 35m2 stops Athens Eleftherios V. Abu Dhabi Zayed Intl
$2,081Etihad Airways
Mon, 19 Apr - Wed, 19 May
SWISS Logo
15:00 - 10:20SYD  Sydney Kingsford Smith-KGS Kos
74h 20m3 stops Singapore Changi Brussels Bruxelles-National Zurich
SWISS Logo
20:40 - 10:25KGS  Kos-SYD Sydney Kingsford Smith
54h 45m2 stops Zurich Singapore Changi
$2,503SWISS
Tue, 20 Apr - Thu, 20 May
Multiple Airlines Logo
20:55 - 00:35SYD  Sydney Kingsford Smith-KGS Kos
34h 40m2 stops Doha Hamad Intl Athens Eleftherios V.
Multiple Airlines Logo
13:05 - 19:35KGS  Kos-SYD Sydney Kingsford Smith
47h 30m3 stops Athens Eleftherios V. Doha Hamad Intl Kuala Lumpur Intl
$2,510Multiple Airlines
Mon, 19 Apr - Fri, 21 May
SWISS Logo
11:00 - 10:20SYD  Sydney Kingsford Smith-KGS Kos
78h 20m3 stops Singapore Changi Brussels Bruxelles-National Zurich
SWISS Logo
15:55 - 10:25KGS  Kos-SYD Sydney Kingsford Smith
35h 30m2 stops Zurich Singapore Changi
$2,579SWISS
Tue, 20 Apr - Thu, 20 May
Multiple Airlines Logo
20:50 - 00:35SYD  Sydney Kingsford Smith-KGS Kos
34h 45m3 stops Singapore Changi Istanbul Athens Eleftherios V.
Multiple Airlines Logo
06:00 - 19:00KGS  Kos-SYD Sydney Kingsford Smith
30h 00m3 stops Athens Eleftherios V. Istanbul Singapore Changi
$2,925Multiple Airlines
Booking Insights

Price, demand, and travel trends for Sydney to Kos flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Sydney to Kos?

Etihad Airways ($1,900) and SWISS ($2,503) are the cheapest airlines to fly return from Sydney to Kos according to KAYAK data over the last 5 days.

Find deals

Key details for Sydney to Kos flights

Cheapest flight

$1,846
The most popular month to fly with an average 69% increase in traveller numbers.
Round-trip flight from Sydney to Kos

When to book flights from Sydney to Kos

Are your dates flexible? Find out the best times to travel from Sydney to Kos based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Sydney to Kos flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Sydney to Kos?

    Only Economy class is available on flights from Sydney to Kos.

  • Do I need a passport to fly from Sydney to Kos?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Sydney to Kos flight?

    Return flights from Sydney to Kos range from $2,523 to $3,090, with an average of $2,798 over the past 12 months. Anything below $2,523 counts as a good deal.

  • Which car hire options are available at Kos Airport (KGS)?

    Kos Airport (KGS) hosts 5 major car hire companies, with daily rates starting from around $12 for economy cars. Top options include:

    • ABBYCAR
    • Exer Rent a Car
    • Caldera
    • Europcar
    • Alma Car Hire

  • Which airports can I use when flying from Sydney to Kos?

    Flights from Sydney to Kos usually depart from Sydney Kingsford Smith (SYD) and arrive at Kos (KGS).

  • Can I save money by using flexible dates for flights from Sydney to Kos?

    Yes. Flexible dates can save you up to 22% on flights from Sydney to Kos. Monday is the cheapest departure day at $2,430 return on average, while Wednesday is the most expensive at $3,089, a difference of $659.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Sydney and Kos?

    Kos is 8 hours behind Sydney (Eastern European Time vs Eastern Australia Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Sydney to Kos flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Wednesday. On this route, Monday flights average $2,430, about $659 less than Wednesday fares (21% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Sydney to Kos trip for October. Fares historically average $2,206 return in that month – typically $785 less than the most expensive month, which is June (based on the last 12 months).

More options for your flight from Sydney to Kos

Complete your trip to Kos with a hotel stay or car hire

Car hire in Kos
Hotels in Kos