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Cheap Flights from Cardiff (CWL) to Rennes (RNS)

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Flight deals from Cardiff to Rennes

Looking for a cheap last-minute deal or the best return flight from Cardiff to Rennes? Find the lowest prices on one-way and return tickets right here.
Rennes.£203 per passenger.Departing Mon, 23 Mar, returning Mon, 30 Mar.Return flight with Ryanair and easyJet.Outbound indirect flight with Ryanair, departs from Cardiff on Mon, 23 Mar, arriving in Rennes.Inbound indirect flight with easyJet, departs from Rennes on Mon, 30 Mar, arriving in Cardiff.Price includes taxes and charges.From £203, select.
Rennes.£278 per passenger.Departing Thu, 26 Mar, returning Thu, 2 Apr.Return flight with Ryanair and Volotea.Outbound indirect flight with Ryanair, departs from Cardiff on Thu, 26 Mar, arriving in Rennes.Inbound indirect flight with Volotea, departs from Rennes on Thu, 2 Apr, arriving in Cardiff.Price includes taxes and charges.From £278, select.
Rennes.£285 per passenger.Departing Tue, 14 Apr, returning Wed, 22 Apr.Return flight with KLM.Outbound indirect flight with KLM, departs from Cardiff on Tue, 14 Apr, arriving in Rennes.Inbound indirect flight with KLM, departs from Rennes on Wed, 22 Apr, arriving in Cardiff.Price includes taxes and charges.From £285, select.
Rennes.£310 per passenger.Departing Wed, 13 May, returning Sat, 16 May.Return flight with KLM.Outbound indirect flight with KLM, departs from Cardiff on Wed, 13 May, arriving in Rennes.Inbound indirect flight with KLM, departs from Rennes on Sat, 16 May, arriving in Cardiff.Price includes taxes and charges.From £310, select.
Rennes.£393 per passenger.Departing Wed, 19 Aug, returning Fri, 21 Aug.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Cardiff on Wed, 19 Aug, arriving in Rennes.Inbound indirect flight with Air France, departs from Rennes on Fri, 21 Aug, arriving in Cardiff.Price includes taxes and charges.From £393, select.

Find the cheapest month to fly from Cardiff to Rennes

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cardiff to Rennes flights are currently cheapest in March.
Feb
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Mar
from £203
Apr
from £285
May
from £310
Jun
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Jul
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Aug
from £393
Sep
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Oct
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Nov
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Dec
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Jan
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Cardiff to Rennes: Alternative routes

Compare routes from Cardiff to Rennes below. You may find an airport to fly into that's cheaper, faster, or easier than Rennes.

Rennes

4 miles from central Rennes
ClosestCheapest
from £203
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Dinard

38 miles from central Rennes
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Cardiff to Rennes: Flight information

The things to know before you go.
Cheapest flight found£203
Cheapest month to flyMarch

Finding cheap flights from Cardiff to Rennes: Frequently asked questions

The best price we found for a return flight from Cardiff to Rennes is £203. 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 Cardiff to Rennes. But we found flights with one or more stops from £203.
As of February 2026, there are no flights flying from Cardiff to Rennes.
The cheapest month to fly from Cardiff to Rennes is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cardiff Airport to Rennes Airport on Monday, 23 March 2026.
No airlines currently offer direct flights between Cardiff Airport and Rennes 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 Rennes 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 Rennes is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to Rennes.

Flying from Cardiff Airport (CWL) to Rennes Airport (RNS): what you need to know

  • The timezone in Rennes is UTC+1, which is one hour ahead of Cardiff.

  • To ensure you catch your CWL to RNS flight, leave enough time to check in and drop off your luggage. Arriving two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • Be prepared for bigger queues during popular months like June. Arriving up to four hours in advance for an international flight and two hours for a domestic departure is a smart move.

  • Break up your flight or take a detour to a new city with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Cardiff Airport to Rennes Airport. Many travellers pass through Amsterdam Airport Schiphol when flying between CWL and RNS.

How to find the cheapest flights from Cardiff Airport (CWL) to Rennes Airport (RNS)

  • The lowest price we've seen for a one-way Cardiff Airport to Rennes Airport flight is £191. A round-trip plane ticket is currently £203. Depending on the availability and when you book, these fares can change.

  • To pick up cheap tickets from CWL to RNS, book early. Airlines typically offer lower fares when flights are first made available.

  • If you're willing to be flexible with your travel plans, try using the 'Whole month' search function. It'll give you the lowest price across each month when searching for a flight from Cardiff Airport to Rennes Airport.

  • You don't need to check every day to find out if fares have gone down when you create a Price Alert. We'll send you an update the moment the price changes on cheap flights from CWL to RNS.

  • Pick your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Cardiff Airport to Rennes Airport.

Handy information about Cardiff Airport (CWL)

  • 66.16% of flights leaving from Cardiff Airport reach their destination on time.

  • Cardiff Airport is around 17 miles from central Cardiff. If you're catching a cab, ride-sharing or driving from the centre, it'll take 30 minutes or so to arrive, depending on the traffic.

  • The trip on public transport typically takes 1 hour 5 minutes.

  • Looking for a handy hotel near CWL? If you're boarding an early flight from Cardiff Airport to Rennes Airport, these stays will put you moments from your departure lounge:

Arriving at Rennes Airport (RNS)

Getting from Rennes Airport (RNS) to central Rennes

  • Rennes Airport is approximately 7 miles from central Rennes. The drive time takes around 20 minutes.

  • It typically takes 50 minutes if you're using public transport.

When to fly to Rennes Airport (RNS)

  • April is the most popular month for flights from Cardiff Airport to Rennes Airport. To escape the crowds, head to Rennes in February.

  • The warmest month in Rennes is July, with the temperature ranging between 11ºC (52ºF) and 28ºC (82ºF). Book your flights from Cardiff Airport to Rennes Airport in this month if this is the type of weather you enjoy.

  • If you like cooler conditions, search for a cheap ticket from CWL to RNS in January. Temperatures average between 0ºC (32ºF) and 10ºC (50ºF) then.

Explore more of France

  • Rennes is easy to fall in love with, but there are so many other parts of France you should also see. About 190 miles east of Rennes, a trip to Paris will keep you on the move. Start with leading sights like Eiffel Tower, Louvre Museum and Cathédrale Notre-Dame de Paris.

  • Nantes is another must-experience destination in France and is around 60 miles south of Rennes. No journey is complete without dropping by Chateau des Ducs de Bretagne, Les Machines de L'ile and Jardin des Plantes.

Plan the rest of your trip from Cardiff to Rennes

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