$154 Cheap Flights from Rotterdam (RTM) to Kos (KGS)

View $154 flight on Mon, Sep 14, 2026Opens in a new window

Popular airlines from Rotterdam (RTM-Rotterdam The Hague) to Kos (KGS-Kos Island Intl.)

Cheap Flights from Rotterdam to Kos (RTM-KGS)

Prices were available within the past 7 days and start at $154 for one-way flights and $334 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Transavia
Fri, Jun 12 - Mon, Jun 15
RTM
Rotterdam
KGS
Kos
$334 Roundtrip, found 5 days ago
$334
Roundtrip
found 5 days ago
Select Transavia flight, departing Fri, Jun 12 from Rotterdam to Kos, returning Mon, Jun 15, priced at $334 found 5 days ago
Transavia
Fri, Jun 12 - Mon, Jun 15
RTM
Rotterdam
KGS
Kos
$525 Roundtrip, found 5 days ago
$525
Roundtrip
found 5 days ago
Select Transavia flight, departing Fri, Jun 12 from Rotterdam to Kos, returning Mon, Jun 15, priced at $525 found 5 days ago
Transavia
Fri, Jun 12 - Mon, Jun 15
RTM
Rotterdam
KGS
Kos
$633 Roundtrip, found 5 days ago
$633
Roundtrip
found 5 days ago
Select Transavia flight, departing Fri, Jun 12 from Rotterdam to Kos, returning Mon, Jun 15, priced at $633 found 5 days ago
British Airways
Fri, Jun 12 - Mon, Jun 15
RTM
Rotterdam
KGS
Kos
$1,744 Roundtrip, found 5 days ago
$1,744
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Jun 12 from Rotterdam to Kos, returning Mon, Jun 15, priced at $1,744 found 5 days ago
Transavia
Fri, Jun 12 - Mon, Jun 15
RTM
Rotterdam
KGS
Kos
$1,795 Roundtrip, found 5 days ago
$1,795
Roundtrip
found 5 days ago
Select Transavia flight, departing Fri, Jun 12 from Rotterdam to Kos, returning Mon, Jun 15, priced at $1,795 found 5 days ago
British Airways
Fri, Jun 12 - Mon, Jun 15
RTM
Rotterdam
KGS
Kos
$3,111 Roundtrip, found 5 days ago
$3,111
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Jun 12 from Rotterdam to Kos, returning Mon, Jun 15, priced at $3,111 found 5 days ago

Frequently asked questions

How much does a flight from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS) cost?
Secure a cheap one-way flight from $154 or cheap return flight from $334 from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS)?
June is the most affordable month to fly from RTM to KGS. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS)?
To find the cheapest airline that'll fly you from RTM to KGS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS)?
You'll have to catch a flight with a layover if you're traveling from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from RTM to KGS?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the season, carrier 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 Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS)?
To avoid potential delays on the Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS) route, aim to fly before 3 PM. Later flights are 22% more likely to be canceled.**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 Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS) last-minute?
Last-minute bookings from RTM to KGS are usually more expensive. To lock in the cheapest rates, start searching for flights early. That said, if you can play around with your travel dates, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book a RTM to KGS flight and hotel package?
Securing a RTM to KGS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our wide range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Rotterdam The Hague Airport (RTM) to Kos Island Intl. Airport (KGS)?
Usually, it's possible to cancel or reschedule your RTM to KGS flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Rotterdam The Hague
Destination airport
Kos Island Intl.
Roundtrip price
$334
Distance
1520 mi

Book with confidence

Rotterdam to Kos Flights

The cheapest times to fly from Rotterdam 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 Rotterdam to Kos are during the month of June. You can find some of the cheapest flights from Rotterdam to Kos with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rotterdam to Kos

Sunday is one of the best days to book for cheap flights from Rotterdam 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 Rotterdam 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 Rotterdam to Kos in 2025. You can also book with separate airlines for your outbound and return journeys, from $154 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 Rotterdam 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 Rotterdam 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.

 

Rotterdam to Kos Flights

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*Available to One Key members.