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Cheap flights from Rennes to London Heathrow Airport from £90

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — LHR
30 Mar — 6 Apr1
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 25 March 2025.

Round-trip from

£185

One-way from

£90

Popular in

May

Cheapest in

July

Average price

£162
KLM
  • KLM
  • 20/8-27/8
  • 2 total stops
  • 12h 35m total
  • Rennes to London
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4/6
  • 4/6
  • 1 total stop
  • 6h 40m total
  • Rennes to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£25 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Sat 15/1110:55RNS - LHR
1 stop6h 40mAir France
Sat 22/1119:35LHR - RNS
1 stop19h 00mAir France
Deal found 25/3£177
Wed 20/817:50RNS - LHR
1 stop4h 05mKLM
Wed 27/806:30LHR - RNS
1 stop8h 30mKLM
Deal found 25/3£185
Sat 1/1107:10RNS - LHR
1 stop4h 20mMultiple Airlines
Sat 8/1108:40LHR - RNS
1 stop4h 10mMultiple Airlines
Deal found 25/3£199

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 25 March 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 20/8

17:50-20:55

1 stop4h 05m

London Heathrow

Wed 27/8

06:30-16:00

1 stop8h 30m

£185

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Thu 24/4

16:35-20:55

1 stop5h 20m

London Heathrow

Sat 26/4

19:45-09:35

1 stop12h 50m

£223

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Sat 6/9

10:55-16:35

1 stop6h 40m

London Heathrow

Sat 6/9

19:45-09:35

1 stop12h 50m

£239

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 4/6

16:00-21:40

1 stop6h 40m

£90

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 30/7

11:20-17:35

1 stop7h 15m

£99

RennesLondon

RNS - LHR

RNSLHR

Rennes St Jacques

Wed 9/4

06:30-07:55

2 stops26h 25m

£127

Flights are sorted by cheapest return flights first.

Deals found on 25/3

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.

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 25 March 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
1,318 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,318 reviews
KLM
7.8
Good
1,318 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,423 reviews
KLM
7.8
Good
1,318 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 £185, KLM will fly you from Rennes to London Heathrow Airport and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Air France for as low as £239. KLM is currently priced 12% 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 £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
Hounslow
Deal
Milton Keynes
Gatwick
Croydon
Luton
Slough
Eastbourne
Wembley
Northampton
Swindon
Hayes
Ilford
Crawley
Southend-on-Sea
Winchester
Maidstone
Ipswich
Watford
Southall

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