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Cheap flights from Southampton to Rennes from £165

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 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — RNS
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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 17 October 2025.

Round-trip from

£248

One-way from

£165

Popular in

July

Cheapest in

March

Average price

£106
KLM
  • KLM
  • 29/11-6/12
  • 2 total stops
  • 22h 55m total
  • Southampton to Rennes
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KLM
  • KLM
  • 25/10
  • 1 total stop
  • 22h 55m total
  • Southampton to Rennes
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£48 potential increase over avg. return price).
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Cheapest flight prices on average. 7% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find flight deals from Southampton to Rennes

Enter your travel dates to find the best prices.

Cheapest flights from Southampton to Rennes
Explore the most affordable flight options available from Southampton to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Sat 29/1109:25SOU - RNS
1 stop6h 40mKLM
Sat 6/1217:35RNS - SOU
1 stop16h 15mKLM
Deal found 15/10£248
Sun 30/1118:05SOU - RNS
1 stop21h 55mKLM
Sun 7/1217:30RNS - SOU
1 stop15h 40mKLM
Deal found 16/10£249
Thu 6/1108:50SOU - RNS
1 stop7h 15mKLM
Wed 12/1111:05RNS - SOU
2 stops6h 55mKLM
Deal found 16/10£270
Sat 29/1109:30SOU - RNS
2 stops22h 05mMultiple Airlines
Sat 6/1209:40RNS - SOU
2 stops24h 05mMultiple Airlines
Deal found 15/10£314
Sun 30/1118:20SOU - RNS
2 stops24h 20mMultiple Airlines
Sun 7/1214:10RNS - SOU
3 stops43h 00mMultiple Airlines
Deal found 16/10£323
Thu 6/1108:50SOU - RNS
1 stop7h 15mMultiple Airlines
Wed 12/1117:30RNS - SOU
1 stop15h 50mMultiple Airlines
Deal found 16/10£328

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 17 October 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

Sat 29/11

09:25-17:05

1 stop6h 40m

Rennes St Jacques

Sat 6/12

17:35-08:50

1 stop16h 15m

£248

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Sun 30/11

18:05-17:00

1 stop21h 55m

Rennes St Jacques

Sun 7/12

17:30-08:10

1 stop15h 40m

£249

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Thu 6/11

08:50-17:05

1 stop7h 15m

Rennes St Jacques

Wed 12/11

11:05-17:00

2 stops6h 55m

£270

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Thu 26/3

18:05-17:05

1 stop22h 00m

Rennes St Jacques

Mon 30/3

16:35-08:50

1 stop17h 15m

£281

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Sat 29/11

09:30-08:35

2 stops22h 05m

Rennes St Jacques

Sat 6/12

09:40-08:45

2 stops24h 05m

£314

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Sun 30/11

18:20-19:40

2 stops24h 20m

Rennes St Jacques

Sun 7/12

14:10-08:10

3 stops43h 00m

£323

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Thu 6/11

08:50-17:05

1 stop7h 15m

Rennes St Jacques

Wed 12/11

17:30-08:20

1 stop15h 50m

£328

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Sat 25/10

18:05-18:00

1 stop22h 55m

£165

SouthamptonRennes

SOU - RNS

SOURNS

Southampton Eastleigh

Sat 25/10

08:25-14:40

3 stops29h 15m

£249

Flights are sorted by cheapest return flights first.

Deals found on 16/10

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.

Cheapflights Insights

Everything you need to know about your flight from Southampton to Rennes

What is the cheapest month to book a flight from Southampton to Rennes?

Currently, February is the cheapest month in which you can book a flight from Southampton to Rennes (average of £24). Flying from Southampton to Rennes in December is currently the most expensive (average of £49). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

  • How long is the flight from Southampton to Rennes?

    Departing from Southampton to Rennes will take you 6h 40m. The distance between Southampton and Rennes is about 200 mi.

  • 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.

  • What is the cheapest month to book a flight from Southampton to Rennes?

    Currently, February is the cheapest month in which you can book a flight from Southampton to Rennes (average of £24). Flying from Southampton to Rennes in December is currently the most expensive (average of £49). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Southampton to Rennes

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Southampton to Rennes?

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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