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Cheap flights from London to Rennes from £21

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — RNS
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Rennes St Jacques are usually found in March or November, booked 38 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from London to Rennes

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 14 November 2025.

Round-trip from

£55

One-way from

£21

Popular in

July

Cheapest in

March

Average price

£87

Good round-trip deal

£78 or less
easyJet
  • easyJet
  • 9/1-11/1
  • Nonstop
  • 2h 20m total
  • London to Rennes
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easyJet
  • easyJet
  • 26/11
  • Nonstop
  • 1h 15m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 34% potential increase in price (£50 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from London (LON) to Rennes St Jacques.
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Find flight deals from London to Rennes

Enter your travel dates to find the best prices.

Cheapest flights from London to Rennes
Explore the most affordable flight options available from London to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Sat 6/1206:40LGW - RNS
Nonstop1h 15measyJet
Mon 8/1220:25RNS - LGW
Nonstop1h 05measyJet
Deal found 13/11£68
Sat 13/1206:40LGW - RNS
Nonstop1h 15measyJet
Mon 15/1212:30RNS - LGW
Nonstop1h 05measyJet
Deal found 12/11£68
Sat 6/1206:40LGW - RNS
Nonstop1h 15measyJet
Thu 18/1220:40RNS - LGW
Nonstop1h 05measyJet
Deal found 13/11£74
Sat 13/1206:40LGW - RNS
Nonstop1h 15measyJet
Thu 18/1220:40RNS - LGW
Nonstop1h 05measyJet
Deal found 13/11£74
Thu 11/1217:40LGW - RNS
Nonstop1h 15measyJet
Thu 18/1220:40RNS - LGW
Nonstop1h 05measyJet
Deal found 13/11£88
Fri 12/1211:55LGW - RNS
Nonstop1h 15measyJet
Fri 19/1215:25RNS - LGW
Nonstop1h 05measyJet
Deal found 12/11£99
Sun 7/1213:50LGW - RNS
Nonstop1h 15measyJet
Mon 8/1220:25RNS - LGW
Nonstop1h 05measyJet
Deal found 13/11£101
Sat 27/1206:40LGW - RNS
Nonstop1h 15measyJet
Sat 3/109:40RNS - LGW
Nonstop1h 05measyJet
Deal found 12/11£125
Sat 6/1206:40LGW - RNS
Nonstop1h 15mMultiple Airlines
Thu 18/1220:45RNS - LGW
1 stop13h 25mMultiple Airlines
Deal found 13/11£131
Sat 13/1206:40LGW - RNS
Nonstop1h 15mMultiple Airlines
Thu 18/1220:45RNS - LGW
1 stop13h 25mMultiple Airlines
Deal found 13/11£132
Sat 13/1206:40LGW - RNS
Nonstop1h 15mMultiple Airlines
Mon 15/1216:55RNS - LGW
1 stop7h 20mMultiple Airlines
Deal found 12/11£134
Sat 6/1206:30LHR - RNS
1 stop9h 35mKLM
Thu 18/1217:35RNS - LHR
1 stop4h 15mKLM
Deal found 13/11£177

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 14 November 2025.
Use the filters below to find and compare flights from London to Rennes that are best for you.

Fly from

London

Fly to

Rennes

Route

Depart

Return

Price

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Sat 6/12

06:40-08:55

Nonstop1h 15m

Rennes St Jacques

Mon 8/12

20:25-20:30

Nonstop1h 05m

£68

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Sat 13/12

06:40-08:55

Nonstop1h 15m

Rennes St Jacques

Mon 15/12

12:30-12:35

Nonstop1h 05m

£68

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Sat 6/12

06:40-08:55

Nonstop1h 15m

Rennes St Jacques

Thu 18/12

20:40-20:45

Nonstop1h 05m

£74

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Thu 19/2

18:00-20:15

Nonstop1h 15m

Rennes St Jacques

Sun 22/2

16:50-16:55

Nonstop1h 05m

£78

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Sun 7/12

13:50-16:05

Nonstop1h 15m

Rennes St Jacques

Mon 8/12

20:25-20:30

Nonstop1h 05m

£101

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Mon 5/1

17:25-19:40

Nonstop1h 15m

Rennes St Jacques

Wed 14/1

20:20-20:25

Nonstop1h 05m

£108

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Fri 20/2

18:20-20:35

Nonstop1h 15m

Rennes St Jacques

Sun 22/2

16:50-16:55

Nonstop1h 05m

£113

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Fri 8/5

14:35-16:50

Nonstop1h 15m

Rennes St Jacques

Fri 15/5

17:40-17:45

Nonstop1h 05m

£115

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Mon 16/2

17:25-19:40

Nonstop1h 15m

Rennes St Jacques

Fri 20/2

21:05-21:10

Nonstop1h 05m

£124

LondonRennes

LGW - RNS

LGWRNS

London Gatwick

Thu 5/2

12:45-20:10

1 stop6h 25m

Rennes St Jacques

Sun 8/2

14:10-22:35

1 stop9h 25m

£125

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 60 results
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Best time to book a flight from London to Rennes

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

How far ahead should I book a flight from London to Rennes?

Use this chart to determine the optimal time to book a return flight from London to Rennes. Price data was last updated on 7 November 2025.

To ensure you get the cheapest price possible for a flight from London to Rennes, you should look to book at least 38 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from London to Rennes (average of £24). Flying from London to Rennes in December is currently the most expensive (average of £52). 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.

What is the cheapest time of day to fly from LON to RNS?

Find hourly flight availability from London to Rennes. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

It’s optimal to fly from London to Rennes in the afternoon. By choosing this option you can save up to 57% on the cost of your flight, compared to a flight in the morning.

How much does it cost for a return flight from London to Rennes?

Reviews of airlines servicing Rennes

Get insights into the airlines that provide service to Rennes. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rennes. Reviews last updated 14 November 2025.
See what other customers who have flown with KLM and easyJet from London to Rennes have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,411 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
easyJet
6.9
Okay
1,842 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from London to Rennes. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Rennes from London?

    Rennes St Jacques (RNS) is the airport you will fly into if you book a flight from London to Rennes. You should not have trouble finding flights to St Jacques from London; the airport handles an average of 0 inbound flights from London per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Rennes airport from London. It is only a 4.0 mi journey from St Jacques (RNS) to Rennes’s city center.

  • How long is the flight from London to Rennes?

    easyJet and KLM can get you from London to Rennes in just under 1h 15m. Your travel time can differ by up to 8h 20m. There are 224 mi between London and Rennes. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from London to Rennes round-trip?

    According to our current data, easyJet (£54), offers the cheapest pricing from London to Rennes. easyJet is currently priced 57% below the average price you’ll pay for this route.

  • What are the most popular routes from London to Rennes?

    The most popular route from London to Rennes is London Heathrow - Rennes St Jacques. You may also consider London Gatwick - Rennes St Jacques or London Stansted - Rennes St Jacques.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from London to Rennes (average of £24). Flying from London to Rennes in December is currently the most expensive (average of £52). 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

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Top airline flying from London to Rennes

Discover the top airline that operate flights from London to Rennes. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£54Average£162FlexibilityNo cancel feeOn-time86%
Search easyJet flights

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