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Cheap flights from Rennes to Southampton from £284

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — SOU
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Rennes to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Rennes (RNS) to Southampton (SOU). 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 12 September 2025.

Round-trip from

£284

Popular in

August

Cheapest in

March

Average price

£98
KLM
  • KLM
  • 6/10-10/10
  • 2 total stops
  • 38h 55m total
  • Rennes to Southampton
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£14 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Rennes to Southampton

Cheapest flights from Rennes to Southampton
Explore the most affordable flight options available from Rennes to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Mon 6/1016:35RNS - SOU
1 stop17h 10mKLM
Fri 10/1017:35SOU - RNS
1 stop21h 45mKLM
Deal found 10/9£284
Fri 12/1217:30RNS - SOU
1 stop16h 20mKLM
Sun 14/1209:30SOU - RNS
1 stop6h 30mKLM
Deal found 11/9£287
Mon 29/1217:30RNS - SOU
1 stop15h 40mKLM
Fri 2/117:30SOU - RNS
1 stop22h 35mKLM
Deal found 10/9£300
Mon 20/1016:35RNS - SOU
1 stop17h 10mKLM
Fri 24/1017:35SOU - RNS
1 stop21h 45mKLM
Deal found 11/9£331
Fri 7/1117:30RNS - SOU
1 stop16h 20mKLM
Tue 11/1117:30SOU - RNS
1 stop22h 30mKLM
Deal found 11/9£360

Cheapflights Fare Finder

 
Customise your flight search to find flights from Rennes to Southampton 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 12 September 2025.
Use the filters below to find and compare flights from Rennes to Southampton that are best for you.

Fly from

Rennes

Fly to

Southampton

Route

Depart

Return

Price

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Mon 6/10

16:35-08:45

1 stop17h 10m

Southampton Eastleigh

Fri 10/10

17:35-16:20

1 stop21h 45m

£284

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Fri 5/12

17:30-08:50

1 stop16h 20m

Southampton Eastleigh

Sun 7/12

09:30-17:00

1 stop6h 30m

£287

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Fri 12/12

17:30-08:50

1 stop16h 20m

Southampton Eastleigh

Mon 15/12

18:05-17:05

1 stop22h 00m

£287

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Fri 12/12

17:30-08:50

1 stop16h 20m

Southampton Eastleigh

Sun 14/12

09:30-17:00

1 stop6h 30m

£287

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Mon 29/12

17:30-08:10

1 stop15h 40m

Southampton Eastleigh

Fri 2/1

17:30-17:05

1 stop22h 35m

£300

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Best time to book a flight from Rennes to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Rennes 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 Rennes to Southampton

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

Currently, September is the cheapest month in which you can book a flight from Rennes to Southampton (average of £203). Flying from Rennes to Southampton in November is currently the most expensive (average of £262). 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 Rennes to Southampton. 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 Rennes to Southampton?

    For as low as £284, KLM can have you in Southampton from Rennes in 17h 10m. Rennes and Southampton are separated by a distance of 200 mi.

  • Can I find deals for flights from Rennes to Southampton that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Rennes to Southampton 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 Rennes to Southampton?

    Currently, September is the cheapest month in which you can book a flight from Rennes to Southampton (average of £203). Flying from Rennes to Southampton in November is currently the most expensive (average of £262). 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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Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Rennes to Southampton. 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 Rennes to Southampton?

Cheapflights helps you find that perfect flight to Southampton from Rennes 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 Rennes to Southampton with no change fees?

Certainly. Search results for flights to Southampton from Rennes shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Rennes to Southampton flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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