Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Rennes from £74

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RNS
10 Jan — 17 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Rennes

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Rennes
Explore the most affordable flight options available from Heathrow to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 December 2025.

Tue 16/1206:30LHR - RNS
1 stop9h 35mMultiple Airlines
Tue 23/1211:05RNS - LHR
1 stop11h 20mMultiple Airlines
Deal found 9/12£210
Tue 16/1206:30LHR - RNS
1 stop9h 35mKLM
Tue 23/1211:05RNS - LHR
2 stops6h 55mKLM
Deal found 9/12£247
Wed 10/1208:55LHR - RNS
1 stop24h 25mAir France
Wed 17/1211:05RNS - LHR
1 stop3h 40mAir France
Deal found 9/12£283
Wed 10/1208:40LHR - RNS
1 stop7h 20mMultiple Airlines
Wed 17/1210:35RNS - LHR
2 stops8h 45mMultiple Airlines
Deal found 9/12£299
Wed 10/1220:25LHR - RNS
2 stops12h 55mMultiple Airlines
Sun 14/1211:05RNS - LHR
1 stop3h 40mMultiple Airlines
Deal found 10/12£326
Mon 8/1219:20LHR - RNS
1 stop14h 00mMultiple Airlines
Fri 12/1217:30RNS - LHR
1 stop4h 20mMultiple Airlines
Deal found 8/12£339
Fri 12/1220:25LHR - RNS
1 stop19h 40mKLM
Sun 14/1217:30RNS - LHR
1 stop4h 20mKLM
Deal found 9/12£345
Sat 20/1220:50LHR - RNS
1 stop15h 50mMultiple Airlines
Tue 23/1211:05RNS - LHR
1 stop11h 20mMultiple Airlines
Deal found 8/12£364
Mon 8/1220:25LHR - RNS
2 stops12h 55mKLM
Fri 12/1217:30RNS - LHR
1 stop4h 20mKLM
Deal found 8/12£395

Find flight deals from Heathrow to Rennes

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 11 December 2025.

Round-trip from

£170

One-way from

£74

Popular in

July

Cheapest in

March

Average price

£138
KLM
  • KLM
  • 21/1-30/1
  • 2 total stops
  • 12h 15m total
  • London to Rennes
Search Deals
11/2
  • 11/2
  • 1 total stop
  • 22h 20m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 34% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 11 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Rennes that are best for you.

Fly from

Heathrow

Fly to

Rennes

Route

Depart

Return

Price

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 23/2

10:00-16:40

1 stop5h 40m

Rennes St Jacques

Thu 26/2

17:35-20:50

1 stop4h 15m

£176

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 23/2

11:45-16:40

1 stop3h 55m

Rennes St Jacques

Fri 27/2

17:35-20:50

1 stop4h 15m

£176

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 22/2

08:40-16:40

1 stop7h 00m

Rennes St Jacques

Fri 27/2

17:35-20:50

1 stop4h 15m

£176

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 22/2

08:40-16:40

1 stop7h 00m

Rennes St Jacques

Sat 28/2

17:35-20:50

1 stop4h 15m

£176

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 1/2

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Fri 6/2

14:25-19:15

1 stop5h 50m

£182

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 23/1

19:25-10:35

1 stop14h 10m

Rennes St Jacques

Fri 30/1

14:25-19:15

1 stop5h 50m

£182

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sat 24/1

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Sat 31/1

11:20-17:00

2 stops6h 40m

£190

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Wed 21/1

20:25-10:20

2 stops12h 55m

Rennes St Jacques

Fri 30/1

14:25-20:50

1 stop7h 25m

£190

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 1/2

20:25-10:20

2 stops12h 55m

Rennes St Jacques

Fri 6/2

14:25-19:15

1 stop5h 50m

£191

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sat 24/1

19:20-09:45

2 stops37h 25m

Rennes St Jacques

Sat 31/1

11:20-16:35

1 stop6h 15m

£191

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 20 results
1
2

Best time to book a flight from Heathrow to Rennes

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

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

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Rennes (average of £31). Flying from London Heathrow Airport to Rennes in February is currently the most expensive (average of £320). 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 LHR to RNS?

Find hourly flight availability from Heathrow 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 11 December 2025.

It’s optimal to fly from London Heathrow Airport to Rennes in the afternoon. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight in the morning.

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 11 December 2025.
Get a feel of what it's like to fly with easyJet from London Heathrow Airport to Rennes by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
easyJet
6.9
Okay
1,850 reviews
Check prices

Overall

6.9

Entertainment

5.5

Comfort

6.7

Boarding

6.7

Food

5.9

Crew

7.6

Reviews

1 / 20
10.0
Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .
easyJet
6.9
Okay
1,850 reviews
easyJet
6.9
Okay
1,850 reviews
Check prices

Overall

6.9

Entertainment

5.5

Comfort

6.7

Boarding

6.7

Food

5.9

Crew

7.6

Reviews

1 / 20
10.0
Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow?

    Located just 4.0 mi from the city center, Rennes St Jacques is the airport most travelers will use when flying to Rennes from London Heathrow. Booking flights from London Heathrow to St Jacques (RNS) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 1 airline.

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

    For as low as £176, KLM can have you in Rennes from London Heathrow Airport in 5h 40m. The distance from London Heathrow Airport to Rennes is about 242 mi.

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

    Cheapflights users have booked flights from London Heathrow Airport to Rennes round-trip from £139.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Rennes (average of £31). Flying from London Heathrow Airport to Rennes in February is currently the most expensive (average of £320). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Rennes

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Nantes flights
Gatwick to Nantes flights
Stansted to Nantes flights
Luton to Nantes flights
London City to Nantes flights
Gatwick to Rennes flights
Stansted to Rennes flights
Southend to Rennes flights
Gatwick to Brest flights
Heathrow to Brest flights
Stansted to Brest flights
Luton to Brest flights
London City to Brest flights
Southend to Brest flights
Luton to Rennes flights
London City to Rennes flights
Southend to Nantes flights
Heathrow to Lorient flights
Gatwick to Lorient flights
Luton to Quimper flights
Heathrow to Quimper flights
Gatwick to Quimper flights
London City to Quimper flights
Gatwick to Dinard flights
Stansted to Dinard flights
London City to Lorient flights
Stansted to Lorient flights
Luton to Lorient flights

Top airline flying from Heathrow to Rennes

Discover the top airline that operate flights from Heathrow 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 11 December 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£139Average£193FlexibilityNo cancel feeOn-time86%
Search easyJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Rennes?

When you search for this flight from Heathrow to Rennes, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Rennes from Heathrow.

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

Need flexible booking options for your flight to Rennes from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Rennes from Heathrow today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.