$205 Cheap Flights from Lisbon (LIS) to Kos (KGS)

View $205 flight on Fri, Sep 5, 2025Opens in a new window

Popular airlines from Humberto Delgado Airport (LIS) to Kos (KGS-Kos Island Intl.)

Cheap Flights from Lisbon to Kos (LIS-KGS)

Prices were available within the past 7 days and start at $205 for one-way flights and $437 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Fri, Sep 12 - Sun, Sep 28
LIS
Lisbon
KGS
Kos
$437 Roundtrip, found 2 days ago
$437
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Fri, Sep 12 from Lisbon to Kos, returning Sun, Sep 28, priced at $437 found 2 days ago
Swiss International Air Lines
Fri, Sep 12 - Sun, Sep 28
LIS
Lisbon
KGS
Kos
$525 Roundtrip, found 2 days ago
$525
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Fri, Sep 12 from Lisbon to Kos, returning Sun, Sep 28, priced at $525 found 2 days ago
Brussels Airlines
Fri, Sep 12 - Sun, Sep 28
LIS
Lisbon
KGS
Kos
$792 Roundtrip, found 2 days ago
$792
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Fri, Sep 12 from Lisbon to Kos, returning Sun, Sep 28, priced at $792 found 2 days ago
Austrian Airlines
Fri, Sep 12 - Sun, Sep 28
LIS
Lisbon
KGS
Kos
$806 Roundtrip, found 2 days ago
$806
Roundtrip
found 2 days ago
Select Austrian Airlines flight, departing Fri, Sep 12 from Lisbon to Kos, returning Sun, Sep 28, priced at $806 found 2 days ago
British Airways
Fri, Sep 12 - Sun, Sep 28
LIS
Lisbon
KGS
Kos
$1,038 Roundtrip, found 2 days ago
$1,038
Roundtrip
found 2 days ago
Select British Airways flight, departing Fri, Sep 12 from Lisbon to Kos, returning Sun, Sep 28, priced at $1,038 found 2 days ago
Flights from Lisbon (LIS) to Kos (KGS)
Origin airport
Humberto Delgado
Destination airport
Kos Island Intl.
Roundtrip price
$436
Distance
1969 mi

Lisbon to Kos Flights

The cheapest times to fly from Lisbon to Kos

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Lisbon to Kos are during the month of September. You can find some of the cheapest flights from Lisbon to Kos with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Lisbon to Kos

Sunday is one of the best days to book for cheap flights from Lisbon to Kos: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Lisbon to Kos

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Lisbon to Kos in 2025. You can also book with separate airlines for your outbound and return journeys, from $205 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Lisbon to Kos flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Lisbon to Kos airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS) cost?
Lock in a cheap one-way flight from $205 or cheap return flight from $437 from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS)?
The cheapest month to fly from LIS to KGS is September, when demand is low. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS)?
To find the cheapest airline that'll fly you from LIS to KGS, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS)?
You'll need to hop on a flight with a layover when traveling from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from LIS to KGS?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can vary based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS)?
Select a flight from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS) that takes off before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS) last-minute?
Booking your flight from LIS to KGS just before your getaway is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a LIS to KGS flight and hotel package?
Compared with arranging flights and hotels separately, booking a LIS to KGS flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place takes the hassle out of travel planning. Just secure your flights and select from our extensive range of stays, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Humberto Delgado Airport (LIS) to Kos Island Intl. Airport (KGS)?
It's usually possible to reschedule or cancel your LIS to KGS flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.