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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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — LHR
18 May — 25 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Rennes to Heathrow

Enter your travel dates to find the best prices.

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 18 April 2026.

Fri 12/611:05
RNS
-
LHR
1 stop3h 40m
Air France
Sun 14/617:35
LHR
-
RNS
1 stop15h 45m
Air France
Deal found 16/4£169
Thu 3/1211:05
RNS
-
LHR
1 stop3h 40m
Air France
Mon 7/1219:20
LHR
-
RNS
1 stop14h 00m
Air France
Deal found 13/4£171
Wed 11/1111:05
RNS
-
LHR
1 stop6h 30m
Air France
Sun 15/1111:30
LHR
-
RNS
1 stop21h 50m
Air France
Deal found 17/4£178
Sat 23/513:35
RNS
-
LHR
1 stop6h 00m
Air France
Fri 29/519:45
LHR
-
RNS
1 stop13h 35m
Air France
Deal found 17/4£179
Thu 4/611:05
RNS
-
LHR
1 stop3h 40m
Air France
Sun 7/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Deal found 14/4£182
Wed 13/511:05
RNS
-
LHR
1 stop3h 40m
Air France
Mon 18/519:45
LHR
-
RNS
1 stop13h 35m
Air France
Deal found 13/4£183
Fri 29/514:25
RNS
-
LHR
1 stop6h 00m
Multiple Airlines
Sun 31/519:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Deal found 14/4£183
Fri 29/514:25
RNS
-
LHR
1 stop6h 00m
Multiple Airlines
Mon 1/619:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Deal found 16/4£184
Fri 8/511:05
RNS
-
LHR
1 stop11h 20m
Multiple Airlines
Mon 11/520:55
LHR
-
RNS
1 stop16h 00m
Multiple Airlines
Deal found 17/4£185
Sun 24/511:05
RNS
-
LHR
1 stop6h 30m
Air France
Sun 31/519:45
LHR
-
RNS
1 stop13h 35m
Air France
Deal found 16/4£185
Wed 6/511:05
RNS
-
LHR
1 stop6h 30m
Multiple Airlines
Fri 15/506:30
LHR
-
RNS
1 stop6h 25m
Multiple Airlines
Deal found 15/4£186
Sat 23/517:20
RNS
-
LHR
1 stop4h 35m
KLM
Thu 28/508:40
LHR
-
RNS
1 stop4h 10m
KLM
Deal found 14/4£188

Find 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 18 April 2026.

Round-trip from

£169

One-way from

£96

Popular in

August

Cheapest in

January

Average price

£161
Air France
  • Air France
  • 12/6-14/6
  • 2 total stops
  • 19h 25m total
  • Rennes to London
Search Deals
KLM
  • KLM
  • 6/6
  • 1 total stop
  • 4h 35m total
  • Rennes to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 18 April 2026.
Use the filters below to find and compare flights from Rennes to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Tue 12/5

14:25-17:35

1 stop4h 10m

London Heathrow

Fri 15/5

20:55-10:20

2 stops12h 25m

£200

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Sun 24/5

14:25-19:30

1 stop6h 05m

London Heathrow

Sun 31/5

20:55-10:20

2 stops12h 25m

£212

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Sun 10/5

14:25-20:55

1 stop7h 30m

London Heathrow

Fri 15/5

20:55-10:20

2 stops12h 25m

£225

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 29/4

14:25-20:55

1 stop7h 30m

London Heathrow

Sun 3/5

20:55-10:20

2 stops12h 25m

£226

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Sat 23/5

17:20-20:55

1 stop4h 35m

London Heathrow

Thu 28/5

20:55-10:20

2 stops12h 25m

£232

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Thu 25/6

11:05-17:35

2 stops7h 30m

London Heathrow

Tue 30/6

20:55-10:20

2 stops12h 25m

£253
Cheapest one-way

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 17/6

14:25-20:55

1 stop7h 30m

£98

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Thu 4/6

11:05-16:35

1 stop6h 30m

£118
Fastest single journey

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 13/5

11:05-13:45

1 stop3h 40m

£119

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 20/5

10:35-18:35

2 stops9h 00m

£124

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

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.

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.

  • How long is the flight from Rennes to London Heathrow Airport?

    For as low as £200, KLM can have you in London Heathrow Airport from Rennes in 4h 10m. There are 242 mi between Rennes and London Heathrow Airport.

  • 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Chelmsford
Ipswich
Southend-on-Sea

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

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

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

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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