KGS

55€ Find Cheap Flights from Frankfurt am Main to Kos – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Frankfurt am Main to Kos departing on 07.09.. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
173 €
Ryanair
Wed 23.9.Mon 5.10.
HHN - KGS • 1 stop
Cheapest direct flights
185 €
TUI fly
Tue 11.8.Tue 18.8.
FRA - KGS • Direct
Top airlines
Cheapest • from 178 € (return)
Best reviews • 8,1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with TUI fly, Condor, and Discover Airlines. Average duration is 3h 07m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 43% average savings
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 83% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
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We hope you love your trip to Kos!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Frankfurt am Main to Kos

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Frankfurt am Main to Kos that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Frankfurt am Main to Kos

Wed, 23. Sep - Mon, 5. Oct
Multiple Airlines Logo
6:05 - 17:15
HHN
-
KGS
10h 10m
1 stop
Multiple Airlines Logo
20:25 - 21:55
KGS
-
HHN
26h 30m
2 stops
173 €Multiple Airlines
Mon, 28. Sep - Tue, 6. Oct
Ryanair Logo
8:20 - 23:30
HHN
-
KGS
14h 10m
1 stop
Ryanair Logo
20:55 - 8:25
KGS
-
HHN
12h 30m
1 stop
178 €Ryanair
Sat, 15. Aug - Mon, 17. Aug
TUI fly Logo
5:45 - 9:55
FRA
-
KGS
3h 10mdirect
TUI fly Logo
19:55 - 22:20
KGS
-
FRA
3h 25mdirect
185 €TUI fly
Tue, 11. Aug - Tue, 18. Aug
TUI fly Logo
5:25 - 9:35
FRA
-
KGS
3h 10mdirect
TUI fly Logo
10:25 - 12:50
KGS
-
FRA
3h 25mdirect
185 €TUI fly
Sat, 15. Aug - Thu, 20. Aug
Condor Logo
14:40 - 18:45
FRA
-
KGS
3h 05mdirect
Condor Logo
11:15 - 13:40
KGS
-
FRA
3h 25mdirect
207 €Condor
Sat, 15. Aug - Sun, 16. Aug
Condor Logo
14:40 - 18:45
FRA
-
KGS
3h 05mdirect
Condor Logo
11:15 - 13:40
KGS
-
FRA
3h 25mdirect
216 €Condor
Mon, 10. Aug - Mon, 17. Aug
Lufthansa Logo
4:55 - 8:55
FRA
-
KGS
3h 00mdirect
Lufthansa Logo
9:45 - 12:05
KGS
-
FRA
3h 20mdirect
255 €Lufthansa
Wed, 12. Aug - Mon, 17. Aug
Discover Airlines Logo
8:40 - 12:40
FRA
-
KGS
3h 00mdirect
Discover Airlines Logo
9:45 - 12:05
KGS
-
FRA
3h 20mdirect
278 €Discover Airlines
Mon, 24. Aug - Mon, 31. Aug
Lufthansa Logo
4:55 - 8:55
FRA
-
KGS
3h 00mdirect
Lufthansa Logo
9:45 - 12:05
KGS
-
FRA
3h 20mdirect
284 €Lufthansa
Mon, 17. Aug - Mon, 31. Aug
Discover Airlines Logo
4:55 - 8:55
FRA
-
KGS
3h 00mdirect
Discover Airlines Logo
9:45 - 12:05
KGS
-
FRA
3h 20mdirect
286 €Discover Airlines
Booking Insights

KAYAK's insights & trends for Frankfurt am Main to Kos flights

Get data-powered insights and trends into flights from Frankfurt am Main to Kos to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Frankfurt am Main to Kos?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Frankfurt am Main to Kos departing in September.

Flight prices are below average for this route right now.

Flights to Kos from Frankfurt am Main usually cost between 263 € and 354 € in September.
The lowest price found in the past 5 days was 172 € on TUI fly (2. Sept–16. Sept).

What is the cheapest Frankfurt am Main to Kos flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Frankfurt am Main to Kos costs 170 € on the route between Cologne (CGN) and Kos (KGS). Over the past month, flights between Frankfurt am Main Airport (FRA) and Kos (KGS) were, on average, 43% cheaper than other Frankfurt am Main-Kos routes. This is also the most popular route.

What’s the cheapest day of the week to fly from Frankfurt am Main to Kos?

The average price of all round-trip flights from Frankfurt am Main to Kos clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Kos on a Thursday and more expensive on a Wednesday. On your return trip to Frankfurt am Main, you should consider flying back on a Tuesday, and avoid Wednesdays for better deals.

What is the cheapest month to fly from Frankfurt am Main to Kos?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Frankfurt am Main to Kos, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Frankfurt am Main to Kos is February, where tickets cost 232 € (return) on average. On the other hand, the most expensive months are October and December, where the average cost of round-trip tickets is 479 € and 474 € respectively.

How far in advance should I book a flight from Frankfurt am Main to Kos?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Frankfurt am Main to Kos, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Frankfurt am Main to Kos, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know - Cheap tickets from Frankfurt am Main to Kos

Cheapest flight

55 €
Flight from Frankfurt-Hahn to Kos

When to book flights from Frankfurt am Main to Kos

Are your dates flexible? Find out the best times to travel from Frankfurt am Main to Kos based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Frankfurt am Main to Kos

  • What is the cheapest flight from Frankfurt am Main to Kos?

    In the last 5 days, the lowest price for a flight from Frankfurt am Main to Kos was 55 € for a one-way ticket and 173 € for a return.

  • Which airports will I be using when flying from Frankfurt am Main to Kos?

    When flying out of Frankfurt am Main you will be using one of these airports: Frankfurt am Main or Frankfurt-Hahn. You will be landing at Kos.

  • Which aircraft models fly most regularly from Frankfurt am Main to Kos?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Frankfurt am Main to Kos?

    Star Alliance is the only airline alliance operating flights between Frankfurt am Main and Kos.

  • How does KAYAK find such low prices on flights from Frankfurt am Main to Kos?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Frankfurt am Main to Kos.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Frankfurt am Main to Kos?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kos from Frankfurt am Main is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Frankfurt am Main to Kos?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Kos with an airline and back to Frankfurt am Main with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Frankfurt am Main to Kos?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kos from Frankfurt am Main up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Frankfurt am Main to Kos?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Frankfurt am Main to Kos.
Find which airlines fly direct from Frankfurt am Main to Kos Airport, which days they fly and book direct flights.

Direct departures

Frankfurt am Main to Kos

Monday

Discover Airlines,TUI fly

Discover Airlines,TUI fly

Tuesday

Condor,TUI fly

Condor,TUI fly

Wednesday

Discover Airlines,TUI fly

Discover Airlines,TUI fly

Thursday

Condor

Condor

Friday

Condor,TUI fly

Condor,TUI fly

Saturday

Condor,Discover Airlines,TUI fly

Condor,Discover Airlines, +1 more

Sunday

Condor

Condor

See more direct flights

Direct returns

Kos to Frankfurt am Main

Monday

Discover Airlines,TUI fly

Discover Airlines,TUI fly

Tuesday

Condor,TUI fly

Condor,TUI fly

Wednesday

Discover Airlines,TUI fly

Discover Airlines,TUI fly

Thursday

Condor

Condor

Friday

Condor,TUI fly

Condor,TUI fly

Saturday

Condor,Discover Airlines,TUI fly

Condor,Discover Airlines, +1 more

Sunday

Condor

Condor

See more direct flights

Reviews of the top 5 airlines flying from Frankfurt am Main to Kos

 
See real verified KAYAK customer reviews for airlines flying from Frankfurt am Main to Kos. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Frankfurt am Main to Kos? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8,1
Aegean AirlinesOverall score based on 902 reviews
6,9Entertainment
7,9Comfort
8,7Crew
7,8Boarding
7,4Food
Airline reviews

Crew was great, service was good, flight went well. Originally, the flight was advertised with WiFi… including during check in… and nada.

8,0 ExcellentShalom, Jun 2026
TLV - ATH
Read more Aegean Airlines reviews

Crew was great, service was good, flight went well. Originally, the flight was advertised with WiFi… including during check in… and nada.

Aegan Airlines compensates for its outdated business-class seats with excellent food and onboard crew service. Launge was also excellent.

For a business class, it barely met the standards of a basic economy on most carriers. The seat would barely recline; no pillow or blanket unless you ask a crew member; no leg rest (at least in the 1st row). The crew was friendly and attentive, except for one male crew member who was very inconsiderate toward many business passengers who were already sleeping or trying to sleep, slamming the doors of the kitchen compartments. He did so twice till another passenger complained to him. Overall, business class is an economy experience except for the food.

The flight was full. The young man in the seat in front of me had reclined and I asked him to put the seat up just a bit because it was encroaching my space quite a lot. Turned out he couldn't because the mechanism was broken. The choice was all the way up or all the way down, no in-between.

It was a short flight. It did leave about 15 minutes late but other than that everything went well!! There was no food service or entertainment so can’t comment on any of that.

For a quick trip to athens they did a great job plane was spacious, and we boarded quickly.

Agean Airlines are the best!!! Kind and pretty personnel willing to help you any time! Kind with the kids and smiley faces! And the only airlines to serve food and drink for free! Yes! This is GREEK HOSPITALITY!! Great job!!

Fine. It was a 25 minute ride in a tiny plane that left 20 mins late

This is my first time flying Aegean Air and I had a great first time experience. I will fly this airline again.

Very delayed. Plus lack of entertainment on board. Crew members were very nice

I’ve never heard of discover airlines but will definitely be on the lookout for future flights. Everything about the trip was perfect. The staff were exceedingly friendly and helpful. The only critique; there was a delay and gate change and this fact was NOT well published! My eTicket was NEVER updated with the new flight details. We ran the whole way from our connecting flight only to find that our flight was delayed. Very frustrating. Additionally, there was NO announcement regarding the root cause of the delay. The uncertainty about the cause of the delay contributes to the overall frustration. One other small matter onboard; one of the toilets was unavailable (or perhaps malfunctioning) and NO explanation was given nor was any workaround explained. It would have been less frustrating if they announced why the toilet was lock and explained the alternatives in detail. That way the foot traffic congestion could have been minimized.

Basically a low cost airline, with very small seats, mediocre food and staff not particularly nice. Not a pleasant flight

Plane was old and small. Crew was not very friendly and didn’t check in much or offer water more than 2 times over a 8 hour flight.

We were on a full-service fare as part of a long-haul trip so it was disappointing to be on such a no-frills flight (no meals/hot drinks/entertainment) especially for a 3.5hr flight, at the start of a long trip. The crew however we’re lovely & friendly.

There was no entertainment or food service (short flight). The flight was delayed more than an hour.

Horrible airport ever. We stood in the security check line for more than an hour. It was past boarding time and we were still waiting in line for the security check. With 2 children and a medically ill person we had a very stressful transit.

Cancelled - booked on train; and then flights started running! I spent 5 hours with 2 changes on train while flights started and is 50 min

Lufthansa has a bag policy unique to Lufthansa. We all had a small carry on and a backpack (personal item) that we carried with us through multiple other connecting flights, no problem. With Lufthansa we were charged 80 euros each for the carry on at the gate, for this one flight. When asked they said they made an announcement… problem being that we had just arrived to the gate from a connecting flight and didn’t hear an announcement. While we were standing at the counter paying the ridiculous fee several other people were stopped, while countless others boarded with the same type of luggage and were not stopped. Crazy. Good news though, when we got on the plane half of the overhead bins were empty! After an already horrible experience the lady at the counter was also terrible, so that helped round things out.

We missed our connecting flight in Frankfurt do to security and all hell ensued then.we got rebooked to Washington got there round 10 am ish didn't find out till 630 we were rerouted to United!! Then we started getting updates

Boarding arrangement at Frankfurt was terribly managed with no proper guidance and the flight was parked far away from the gate. In flight entertainment device (touch screen) was not working at all throughout the flight. And on top of all this two of the checked in bags were found to be missing when we landed at Chennai. All this mismanagement at a very high fare of about $2300 per ticket is unacceptable.

Delayed over 2 hours. Bring your own snacks or prepare to pay. No entertainment and no plug plugs for charging.

No internet for most of the flight. Very narrow seats. Food was bad. Flight was nearly an hour late with perfect weather, crew offered no explanation or compensation.

Would not accommodate my request to bring my my jacket I left on the plane.

Flight never showed up and there was no one at the airport to help .

Condor's computers do not work. They do not leave enough time to catch a connecting flight. Condor had to book passengers on a different airline to make their destination. They lost my niece and nephew's luggage. The bathroom had pee all over it before the flight took off.

Awful!! We got stuck in the passport line for two hours. Condor acknowledges that the lines are really long but says it is not their problem and would only rebook us in two days. We are stuck in Frankfurt for two days and it cost us $500. Condor stated that they gave us a 1.5 hour layover which was more than enough time and in the next sentence said, yes we know the lines are a problem.

I used Kayak.com to buy plane tickets, which sent me to Underpricer. Immediately upon buying the tickets I started getting phone calls telling me that my "tickets were not guaranteed" unless I paid more money. I told them that if they've sold me on just the idea of a ticket, and not an actual ticket, then refund my money immediately. We argued, but they eventually said they would do that. They didn't, I refused the charge on my CC, the CC company eventually charged me anyway, and Underpricer still didn't cancel that ticket because I kept getting alerts to get on that flight. In complaining to Underpricer, they insist that it's my fault and that the most they can do is refund the fees. This company is using deceptive practices and harassing people, and the company needs to be banned from Kayak and from doing business in the US.

Premium economy meant only extended legroom and when the passenger in front of me leaned back, I lost the little space I paid for. Food was not great. Movie selection is okay. Feels somewhere between a mainstream and a budget airline.

Wish the plane actually landed at a gate instead of on the tarmac and have the passengers board very slow buses.

The jet is quiet but the food is uneatable and the new seats are horrible .One cannot find comfort on them. When do airlines learn that there is a better service for your clients. Go to a flying wing design save fuel offer a human seat where your arm does not interfere with your neighbor . Provide food that tastes good and offer free drinks

Horrible. Another delayed flight. So cramped! Poor food. So many unnecessary announcements.

Nice flight over the alps with spectacular views. Rome airport has good signage including on how to get into the city on the Leonardo express.

Very nice flight very quick staff were really good. They speaking to me in German a lot when I’m English again if you’re the taller person I would pay extra for the legroom more comfortable.

One of the female flight attendants had an attitude. The snack toward the end was pretty bad. My husband and I were both sick the next two days.

Everything you need to know for your flight from Frankfurt am Main to Kos

Information on your arrival and departure airports