Cheap flights from Southampton to Rennes from £128

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — RNS
3 Sep — 10 Sep1
1 adult

Cheap flight deals from Southampton to Rennes

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Rennes (RNS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 August 2025.

Popular in

August

Cheapest in

March

Average price

£216
Highest demand for flights based on searches. 25% potential increase in price (£31 potential increase over avg. return price).
Cheapest flight prices on average. 7% potential price decrease (£7 potential savings vs. average return price).
Average for round-trip flights in August 2025

Find flight deals from Southampton to Rennes

One-way flights from Southampton to Rennes
Search for one-way flight options from Southampton to Rennes. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

Thu 16/1008:55SOU - RNS
2 stops30h 55mMultiple Airlines
Deal found 27/8£128

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Rennes that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 August 2025.
Use the filters below to find and compare flights from Southampton to Rennes that are best for you.

Fly from

Southampton

Fly to

Rennes

Route

Depart

Return

Price

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Thu 16/10

08:55-16:50

2 stops30h 55m

£128

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Best time to book a flight from Southampton to Rennes

Have a flexible travel schedule? Discover the best time to fly to Rennes from Southampton with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Rennes. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find deals for flights from Southampton to Rennes that include hotel bookings?

    Yes. In addition to deals on Southampton to Rennes flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southampton to Rennes?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Rennes.

  • Can I find deals for business class flights from Southampton to Rennes?

    Yes. Cheapflights offers flight deals from Southampton to Rennes by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Southampton to Rennes. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Rennes?

Cheapflights helps you find that perfect flight to Rennes from Southampton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Southampton to Rennes with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Southampton to Rennes, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Southampton to Rennes become cheaper?

Yes, Cheapflights offers price alerts on Southampton to Rennes flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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