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Cheap Flights from Lisbon to Kos

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Flight deals from Lisbon to Kos

Looking for a cheap last-minute deal or the best return flight from Lisbon to Kos? Find the lowest prices on one-way and return tickets right here.
Kos.$425 per passenger.Departing Tue, 23 Jun, returning Mon, 29 Jun.Return flight with SWISS.Outbound indirect flight with SWISS, departs from Lisbon on Tue, 23 Jun, arriving in Kos.Inbound indirect flight with SWISS, departs from Kos on Mon, 29 Jun, arriving in Lisbon.Price includes taxes and charges.From $425, select.
Kos.$443 per passenger.Departing Thu, 26 Feb, returning Mon, 2 Mar.Return flight with Aegean Airlines.Outbound indirect flight with Aegean Airlines, departs from Lisbon on Thu, 26 Feb, arriving in Kos.Inbound indirect flight with Aegean Airlines, departs from Kos on Mon, 2 Mar, arriving in Lisbon.Price includes taxes and charges.From $443, select.
Kos.$500 per passenger.Departing Fri, 29 May, returning Sat, 6 Jun.Return flight with Brussels Airlines.Outbound indirect flight with Brussels Airlines, departs from Lisbon on Fri, 29 May, arriving in Kos.Inbound indirect flight with Brussels Airlines, departs from Kos on Sat, 6 Jun, arriving in Lisbon.Price includes taxes and charges.From $500, select.
Kos.$588 per passenger.Departing Tue, 25 Aug, returning Mon, 31 Aug.Return flight with SWISS.Outbound indirect flight with SWISS, departs from Lisbon on Tue, 25 Aug, arriving in Kos.Inbound indirect flight with SWISS, departs from Kos on Mon, 31 Aug, arriving in Lisbon.Price includes taxes and charges.From $588, select.
Kos.$589 per passenger.Departing Sat, 27 Jun, returning Sat, 4 Jul.Return flight with Brussels Airlines.Outbound indirect flight with Brussels Airlines, departs from Lisbon on Sat, 27 Jun, arriving in Kos.Inbound indirect flight with Brussels Airlines, departs from Kos on Sat, 4 Jul, arriving in Lisbon.Price includes taxes and charges.From $589, select.
Kos.$641 per passenger.Departing Fri, 24 Apr, returning Sun, 3 May.Return flight with SKY express and Ryanair.Outbound indirect flight with SKY express, departs from Lisbon on Fri, 24 Apr, arriving in Kos.Inbound indirect flight with Ryanair, departs from Kos on Sun, 3 May, arriving in Lisbon.Price includes taxes and charges.From $641, select.
Kos.$657 per passenger.Departing Sun, 12 Apr, returning Fri, 24 Apr.Return flight with SKY express.Outbound indirect flight with SKY express, departs from Lisbon on Sun, 12 Apr, arriving in Kos.Inbound indirect flight with SKY express, departs from Kos on Fri, 24 Apr, arriving in Lisbon.Price includes taxes and charges.From $657, select.
Kos.$663 per passenger.Departing Sun, 30 Aug, returning Sun, 13 Sep.Return flight with TAP Air Portugal and Aegean Airlines.Outbound indirect flight with TAP Air Portugal, departs from Lisbon on Sun, 30 Aug, arriving in Kos.Inbound indirect flight with Aegean Airlines, departs from Kos on Sun, 13 Sep, arriving in Lisbon.Price includes taxes and charges.From $663, select.

Find the cheapest month to fly from Lisbon to Kos

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Lisbon to Kos flights are currently cheapest in June.
Feb
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Mar
from $981
Apr
from $656
May
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Jun
from $424
Jul
from $689
Aug
from $588
Sep
from $692
Oct
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Nov
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Dec
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Jan
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Lisbon to Kos: Flight information

The things to know before you go.
Cheapest flight found$425
Cheapest month to flyJune

Check out these Kos hotels

Ready to plan your stay? Other travellers rate these Kos hotels for cleanliness, service and location.
Greek Islands Studios
4.52 km from Kos
$97
Per night
Greek Islands Studios
4.52 km from Kos
$97
Per night
Explore top-rated hotels

Finding cheap flights from Lisbon to Kos: Frequently asked questions

The best price we found for a return flight from Lisbon to Kos is $425. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Lisbon to Kos. But we found flights with one or more stops from $425.
As of February 2026, there are no flights flying from Lisbon to Kos.
The cheapest month to fly from Lisbon to Kos is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Lisbon Airport to Kos Airport on Tuesday, 23 June 2026.
No airlines currently offer direct flights between Lisbon Airport and Kos Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kos but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kos is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, SWISS offers the cheapest flight tickets to Kos.

Travelling from Lisbon Portela Airport (LIS) to Kos Airport (KGS): what you need to know

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to catch your LIS to KGS flight.

  • Longer lines at check-in and security are likely if you're heading away during high season, so give yourself even more breathing space. A good rule for peak times? Get there up to four hours early for international flights and two hours for domestic departures.

  • If you want to include a stop along the way, simply deselect 'Direct flights only' when searching for your ticket from Lisbon Portela Airport to Kos Airport. These are the most popular stopovers between LIS and KGS:

    • Eleftherios Venizelos International Airport

    • Pisa International Airport

    • Milano Malpensa Airport

How to find the cheapest flights from Lisbon Portela Airport (LIS) to Kos Airport (KGS)

  • The cheapest price we've found for a one-way Lisbon Portela Airport to Kos Airport flight is $247. A return ticket is currently $425. Depending on the availability and when you book, these fares could change.

  • It's usually best to book ahead of time if you want to get cheap tickets from LIS to KGS. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

  • Finding cheap flights from Lisbon Portela Airport to Kos Airport is easier if you can be flexible with your travel plans. Use the 'Whole month' tool to see the lowest prices across every month and bag a great deal.

  • You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll notify you the moment there's a new deal on cheap flights from LIS to KGS.

  • Find the right flight for you with the help of the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Lisbon Portela Airport to Kos Airport, use the 'Sort by' tool. You can also filter results by departure and arrival times, airline, and journey duration.

Handy information about Lisbon Portela Airport (LIS)

  • Of the departures from Lisbon Portela Airport, 64.1% arrive on time at their destination.

  • Central Lisbon to Lisbon Portela Airport is approximately 10 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're catching a cab, ride-sharing or driving.

  • Expect a trip time of about 1 hour on public transport.

  • Looking for a convenient hotel near LIS? If you're boarding an early flight from Lisbon Portela Airport to Kos Airport, these accommodation options will put you moments from your check-in counter:

Arriving at Kos Airport (KGS)

  • Booking your ride from Kos Airport around three weeks ahead gives you the best chance of locking in a great deal.

More travel options

Plan the rest of your trip from Lisbon to Kos

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.