Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Rennes from £99

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RNS
30 מרץ — 6 אפר'1
1 adult

Cheap 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 25 מרץ 2025.

Round-trip from

£183

One-way from

£99

Popular in

July

Cheapest in

September

Average price

£74
KLM
  • KLM
  • 26/4-30/4
  • 2 total stops
  • 18h 10m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 17/9
  • 1 total stop
  • 6h 20m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Heathrow to Rennes

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 25 מרץ 2025.

ש' 26/419:45LHR - RNS
1 stop12h 50mMultiple Airlines
ד' 30/416:35RNS - LHR
1 stop5h 20mMultiple Airlines
Deal found 24/3£183
ה' 8/509:55LHR - RNS
1 stop5h 05mKLM
ה' 15/516:35RNS - LHR
1 stop3h 50mKLM
Deal found 24/3£183
ו' 28/308:55LHR - RNS
2 stops12h 10mAir France
ש' 29/310:55RNS - LHR
1 stop21h 05mAir France
Deal found 24/3£243

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 25 מרץ 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

ש' 26/4

19:45-09:35

1 stop12h 50m

Rennes St Jacques

ד' 30/4

16:35-20:55

1 stop5h 20m

£183

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

ה' 8/5

09:55-16:00

1 stop5h 05m

Rennes St Jacques

ה' 15/5

16:35-19:25

1 stop3h 50m

£183

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

ב' 21/4

19:45-11:05

1 stop14h 20m

Rennes St Jacques

ג' 22/4

14:55-07:55

2 stops18h 00m

£314

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

ד' 17/9

08:40-16:00

1 stop6h 20m

£99

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

ו' 9/5

19:45-11:05

1 stop14h 20m

£117

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

ה' 1/5

06:20-16:00

2 stops32h 40m

£138

Flights are sorted by cheapest return flights first.

Deals found on 25/3

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 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 25 מרץ 2025.

It’s optimal to fly from London Heathrow Airport to Rennes at midday. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the morning.

Rainfall in Rennes by month

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

In terms of precipitation, rainfall in Rennes ranges from 38.0 - 75.0 inches per month. October is typically the wettest month, when rainfall can reach 75.0 mm. August is typically the driest time to visit Rennes when rainfall is around 38.0 mm.

Temperature in Rennes by month

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

If weather is an important factor for your trip to Rennes, 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 19.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.0 C).

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 25 מרץ 2025.
KLM
7.8
Good
1,318 reviews
Check prices

Comfort

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.3

Overall

7.8

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

Comfort

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.3

Overall

7.8

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

Comfort

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.3

Overall

7.8

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 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.

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

    Cheapflights users have booked flights from London Heathrow Airport to Rennes round-trip from £183. Another airline that can offer you cheap pricing is Air France. These flights start at 30% lower than the current average price 3 months from now.

  • 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.

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.
Stansted to Nantes flights
Heathrow to Nantes flights
Luton to Nantes flights
Gatwick to Nantes flights
London City to Nantes flights
London City to Rennes flights
Luton to Rennes flights
Stansted to Rennes flights
Gatwick to Rennes flights
Heathrow to Brest flights
Stansted to Brest flights
Luton to Brest flights
London City to Brest flights
Southend to Nantes flights
Gatwick to Brest flights
Southend to Brest flights
Southend to Rennes flights
Heathrow to Lorient flights
London City to Lorient flights
Stansted to Lorient flights
Luton to Lorient flights
Gatwick to Lorient flights
Stansted to Dinard flights
Gatwick to Dinard flights
London City to Quimper flights
Gatwick to Quimper flights
Heathrow to Quimper flights
Luton to Quimper 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 25 מרץ 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£214Average£379FlexibilityNo cancel feeOn-time77%
Search Air France 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.