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Cheap flights from Rennes to London Heathrow Airport from £96

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 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — LHR
1 Jul — 8 Jul1
1 adult

Cheap flight deals from Rennes to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Rennes (RNS) to Heathrow (LHR). 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 26 June 2025.

Round-trip from

£166

One-way from

£96

Popular in

August

Cheapest in

July

Average price

£115
Air France
  • Air France
  • 5/11-12/11
  • 2 total stops
  • 20h 15m total
  • Rennes to London
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KLM
  • KLM
  • 17/12
  • 1 total stop
  • 7h 30m total
  • Rennes to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from Rennes to Heathrow

Cheapest flights from Rennes to Heathrow
Explore the most affordable flight options available from Rennes to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Wed 5/1111:05RNS - LHR
1 stop6h 30mAir France
Wed 12/1119:35LHR - RNS
1 stop13h 45mAir France
Deal found 24/6£166
Tue 28/1014:20RNS - LHR
1 stop5h 55mMultiple Airlines
Sat 1/1119:35LHR - RNS
1 stop13h 45mMultiple Airlines
Deal found 25/6£171
Thu 17/717:50RNS - LHR
1 stop4h 05mKLM
Mon 21/720:55LHR - RNS
1 stop12h 55mKLM
Deal found 24/6£178

Cheapflights Fare Finder

Customise your flight search to find flights from Rennes to Heathrow 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 26 June 2025.
Use the filters below to find and compare flights from Rennes to London Heathrow Airport that are best for you.

Fly from

Rennes

Fly to

Heathrow

Route

Depart

Return

Price

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 5/11

11:05-16:35

1 stop6h 30m

London Heathrow

Wed 12/11

19:35-10:20

1 stop13h 45m

£166

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Tue 28/10

14:20-19:15

1 stop5h 55m

London Heathrow

Sat 1/11

19:35-10:20

1 stop13h 45m

£171

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Thu 17/7

17:50-20:55

1 stop4h 05m

London Heathrow

Mon 21/7

20:55-10:50

1 stop12h 55m

£178

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 17/12

14:20-20:50

1 stop7h 30m

£96

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Tue 1/7

21:35-07:55

1 stop11h 20m

£122

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Sun 13/7

10:15-08:00

1 stop22h 45m

£125

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Sat 30/8

18:50-08:00

1 stop14h 10m

£125

Flights are sorted by cheapest return flights first.

Deals found on 25/6

Best time to book a flight from Rennes to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 London Heathrow Airport

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

Currently, January is the cheapest month in which you can book a flight from Rennes to London Heathrow Airport (average of £112). Flying from Rennes to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 26 June 2025.
Read through reviews of airlines operating flights from Rennes to London Heathrow Airport, such as KLM, Air France, andAer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,365 reviews
Check prices

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,365 reviews
KLM
7.8
Good
1,365 reviews
Check prices

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air France
7.5
Good
1,470 reviews
KLM
7.8
Good
1,365 reviews
Check prices

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,131 reviews
KLM
7.8
Good
1,365 reviews
Check prices

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Rennes to Heathrow. 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 from for flights from Rennes to London Heathrow?

    If you book a flight to London Heathrow from Rennes, you will be flying from St Jacques, which is the city’s only airport. Rennes St Jacques (RNS) is located 4.0 mi from the center of Rennes. There are 0 flights from St Jacques to London Heathrow per day from 0 different airlines.

  • What are the cheapest airlines flying from Rennes to London Heathrow Airport round-trip?

    Currently priced at £166, Air France will fly you from Rennes to London Heathrow Airport and back. In addition to Air France, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on KLM for as low as £178. Air France is currently priced 10% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Rennes to London Heathrow Airport one-way?

    One-way options have recently been found by users for as low as £96 on KLM. Other airlines that offer cheap prices include Air France from £125 and Aer Lingus from £125 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Rennes to London Heathrow Airport (average of £112). Flying from Rennes to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Rennes?

Book flights to Rennes if you plan to visit one of these locations
Croydon
Milton Keynes
Hounslow
Deal
Northampton
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Watford
Southend-on-Sea
Folkestone
Ipswich
Winchester
Hayes
Maidstone
Swindon

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