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Cheap flights from Rennes to London Heathrow Airport from £80

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — LHR
22 1月 — 29 1月1
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 17 1月 2025.

Round-trip from

£162

One-way from

£80

Popular in

May

Cheapest in

March

Average price

£215
Air France
  • Air France
  • 3/3-10/3
  • 2 total stops
  • 17h 25m total
  • Rennes to London
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10/3
  • 10/3
  • 1 total stop
  • 26h 15m total
  • Rennes to London
Search Deals
High demand for flights, 19% potential price rise
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Best time to find cheap flights, 5% potential price drop
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Average for round-trip flights in January 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 17 1月 2025.

週一 3/311:25RNS - LHR
1 stop11h 00mAir France
週一 10/306:20LHR - RNS
1 stop6h 25mAir France
Deal found 17/1£162
週六 15/214:20RNS - LHR
1 stop7h 30mMultiple Airlines
週二 18/219:35LHR - RNS
1 stop14h 10mMultiple Airlines
Deal found 16/1£163
週五 14/314:20RNS - LHR
1 stop5h 55mKLM
週日 16/308:40LHR - RNS
1 stop4h 10mKLM
Deal found 17/1£164

Find flights from Rennes to Heathrow within your budget

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 17 1月 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

週一 3/3

11:25-21:25

1 stop11h 00m

London Heathrow

週一 10/3

06:20-13:45

1 stop6h 25m

£162

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

週六 15/2

14:20-20:50

1 stop7h 30m

London Heathrow

週二 18/2

19:35-10:45

1 stop14h 10m

£163

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

週五 14/3

14:20-19:15

1 stop5h 55m

London Heathrow

週日 16/3

08:40-13:50

1 stop4h 10m

£164

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

週一 10/3

20:55-22:10

1 stop26h 15m

£80

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

週五 7/3

14:20-19:15

1 stop5h 55m

£82

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

週三 30/4

06:00-18:35

2 stops13h 35m

£125

Flights are sorted by cheapest return flights first.

Deals found on 16/1

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.

Travel insights for flights from Rennes to Heathrow

Get recent, data-driven insights about flights from Rennes to Heathrow including ideal travel times, pricing trends, and more.

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 £161). 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 17 1月 2025.
Read reviews from past customers who have flown KLM and Air France from Rennes to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,339 reviews
Check prices

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,339 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air France
7.4
Good
1,487 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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 £162, 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 £164. Air France is currently priced 25% below the average price you’ll pay for this route.

  • 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 £161). 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
Deal
Hounslow
Gatwick
Milton Keynes
Croydon
Luton
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Ilford
Hayes
Eastbourne
Northampton
Swindon
Maidstone
Winchester
Southend-on-Sea
Wembley
Ipswich
Watford
Crawley
Southall

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