How much does a flight from Cardiff to Kos Island cost?

Based on 27 offers analyzed, Cardiff to Kos Island flights range from GBP 558 to GBP 3300, with a median price of GBP 854. Prices vary by travel date, booking timing, and airline. Search for current prices at https://letsfg.co/en/flights/cwl-kgs

What hidden fees should I expect on Cardiff to Kos Island flights?

Ancillary fees add an average of GBP 21 to the base fare on Cardiff–Kos Island flights — 2% of the base fare. BA charges the most (GBP 80) while KL charges the least (GBP 18). See itemized fees at https://letsfg.co/en/flights/cwl-kgs

Which airline is cheapest on Cardiff to Kos Island including all fees?

KL has the lowest median fare on Cardiff–Kos Island at GBP 848 (median across 23 offers in November 2026). Check current prices at https://letsfg.co/en/flights/cwl-kgs

Which booking site has the cheapest CWL–KGS flights?

It depends on your dates — no single site is always cheapest. LetsFG searched 3 sources at once (direct airlines, travel agencies and meta-search) in November 2026; the lowest median was GBP 624, and prices spanned GBP 2471 from cheapest to most expensive source. Run a live search and we surface the lowest, wherever it is, at https://letsfg.co/en/flights/cwl-kgs

Why do prices vary so much on Cardiff to Kos Island routes?

Cardiff–Kos Island prices span GBP 558–GBP 3300 because 3 airlines with different pricing models compete on the route. Budget carriers median GBP 848; full-service carriers median GBP 1580. Ancillary fees add GBP 18–GBP 80 depending on carrier. Find where your trip lands at https://letsfg.co/en/flights/cwl-kgs

Flights Cardiff → Kos Island

As of November 2026, economy flights from Cardiff to Kos Island have a typical range GBP 623–3095, median GBP 854. Full range across all 27 offers: GBP 558–3300. We found 85% of 27 offers from budget carriers (around GBP 848) and 15% from full-service carriers (around GBP 860).

27 offersavg GBP 21 in feesFresh · November 2026

Search Cardiff → Kos Island — see your price →

Preview snapshot — prices change. Search for live results.

Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →

Two fare clusters detected: budget fares around 969 and premium fares around 3163

Best offers by airline: Cardiff → Kos Island

Based on 27 offers · November 2026. Prices and availability change — run a live search to confirm.

KLMGBP 558

8h 30m–33h 5mMin 1 stopAfternoon (12–18)

Search KLM

TUI AirwaysGBP 854

16h 25m–17h 10mMin 2 stopsAfternoon (12–18)

Search TUI Airways

British AirwaysGBP 2300

22h 50mMin 2 stopsAfternoon (12–18)

Bags included

Non-refundable

Search British Airways

Bag & seat fees: Cardiff → Kos Island

Add-on pricing from the cheapest available offer per airline · November 2026 · GBP

Airline	Carry-on	Checked bag	Seat selection
KLM	—	—	—
British Airways	Included	GBP 65	—

Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.

How much do flights from Cardiff to Kos Island cost?

Based on 27 offers · November 2026

Cardiff to Kos Island flights ranged from GBP 558 to GBP 3300 across 27 offers analyzed in November 2026. Two fare clusters detected: budget fares around 969 and premium fares around 3163 The chart below shows how prices distributed across all 27 offers.

Limited data (27 offers). Results may not fully represent the market. Run a search for more complete data.

GBP 558median GBP 854GBP 3300

What hidden fees do Cardiff to Kos Island flights charge?

Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Cardiff to Kos Island routes. The breakdown below is based on 27 offers analyzed in November 2026.

Ancillary fee breakdown by carrier
Carrier	Avg fee (GBP)	% of base fare
KL	18	2%
BA	80	3%

British Airways: base ~GBP 2220 + fees GBP 80 = ~GBP 2300 total. KLM: base ~GBP 830 + fees GBP 18 = ~GBP 848 total.

Total costs diverge further when fees are added on this route. Always compare total cost, not just the advertised base fare.

Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.

Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.

Run your search to see itemized fees for your itinerary

Which airline is cheapest from Cardiff to Kos Island?

3 airlines flew Cardiff to Kos Island in this dataset. The route shows a clear split between low-cost and full-service carriers. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.

Even on the cheapest airline (KLM), fares ranged GBP 589–3095 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →

Airline	Offers	Typical range (GBP)	Median (GBP)	Fees (GBP)
KLM	23	589–3095	848	18 (2%)
BY	3	855–866	860	n/a
British Airways	1	—	2300	80 (3%)

Where do the best Cardiff → Kos Island prices come from?

We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.

We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.

Key facts: Cardiff to Kos Island flights

Cardiff–Kos Island had 27 offers analyzed. Median price: GBP 854.
BA charges 4.4x more in ancillary fees than KL — GBP 80 vs GBP 18 avg per booking.
The same route priced GBP 2471 apart depending on where it was booked — the lowest median was GBP 624. We search every airline and the major booking sites at once so you always see that lowest price.

Frequently asked questions

How much does a flight from Cardiff to Kos Island cost?: Based on 27 offers analyzed, Cardiff to Kos Island flights range from GBP 558 to GBP 3300, with a median price of GBP 854. Search for your specific dates →
What hidden fees should I expect on Cardiff to Kos Island flights?: On average, ancillary fees (bags, seat selection) add GBP 21 to the base fare on Cardiff to Kos Island flights. See itemized fees for your itinerary →
Which airline is cheapest on Cardiff to Kos Island including all fees?: KLM has the lowest median fare on Cardiff to Kos Island at GBP 848 (median across 23 offers in our snapshot). Check which airline wins on your dates →
Which booking site has the cheapest Cardiff–Kos Island flights?: It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was GBP 624. Run a live search and we'll find the cheapest for you →
Why do prices vary so much on Cardiff to Kos Island routes?: Cardiff to Kos Island has 3 airlines competing, creating a price range from GBP 558 to GBP 3300 across 27 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →

3 airlines, two price clusters — find which fits your budget

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