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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 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RNS
22 Jun — 29 Jun1
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 23 May 2026.

Wed 10/619:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Wed 24/614:25
RNS
-
LHR
1 stop18h 15m
Multiple Airlines
Deal found 22/5£154
Sat 30/519:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 3/611:05
RNS
-
LHR
1 stop8h 30m
Air France
Deal found 21/5£155
Wed 1/719:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 8/711:05
RNS
-
LHR
1 stop8h 30m
Air France
Deal found 23/5£156
Mon 1/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Mon 8/611:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 19/5£162
Wed 27/519:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 3/611:05
RNS
-
LHR
1 stop3h 40m
Air France
Deal found 20/5£162
Wed 17/617:35
LHR
-
RNS
1 stop15h 45m
Air France
Wed 24/611:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 20/5£163
Mon 13/719:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Tue 21/718:05
RNS
-
LHR
1 stop15h 55m
Multiple Airlines
Deal found 21/5£169
Tue 16/619:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Tue 23/614:25
RNS
-
LHR
1 stop4h 10m
Multiple Airlines
Deal found 19/5£173
Wed 17/606:30
LHR
-
RNS
1 stop6h 25m
Multiple Airlines
Thu 25/611:05
RNS
-
LHR
1 stop8h 30m
Multiple Airlines
Deal found 19/5£175
Fri 5/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Sun 7/611:05
RNS
-
LHR
1 stop21h 50m
Air France
Deal found 19/5£176
Mon 15/619:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Fri 19/614:25
RNS
-
LHR
1 stop7h 30m
Multiple Airlines
Deal found 19/5£179

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 23 May 2026.

Round-trip from

£154

One-way from

£99

Popular in

April

Cheapest in

January

Average price

£157
KLM
  • KLM
  • 10/6-24/6
  • 2 total stops
  • 31h 50m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 23/6
  • 1 total stop
  • 4h 15m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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 23 May 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Rennes that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Wed 17/6

06:30-13:55

1 stop6h 25m

Rennes St Jacques

Thu 25/6

11:05-18:35

1 stop8h 30m

£175

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 19/7

06:30-17:35

1 stop10h 05m

Rennes St Jacques

Thu 23/7

18:05-20:55

1 stop3h 50m

£182

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Wed 1/7

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Wed 8/7

11:05-19:25

2 stops9h 20m

£209

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 7/9

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 14/9

11:05-18:35

1 stop8h 30m

£220

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sat 20/6

08:40-10:20

2 stops24h 40m

Rennes St Jacques

Sat 27/6

11:05-07:40

2 stops21h 35m

£243

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Thu 27/8

17:10-17:35

1 stop23h 25m

Rennes St Jacques

Wed 2/9

14:25-09:00

1 stop19h 35m

£250

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Wed 1/7

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Wed 8/7

11:05-19:25

2 stops9h 20m

£267

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Thu 2/7

08:40-13:55

1 stop4h 15m

Rennes St Jacques

Thu 16/7

11:05-18:35

1 stop8h 30m

£275

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sat 11/7

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 13/7

11:05-18:35

1 stop8h 30m

£282
Fastest return journey

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Tue 28/7

08:40-17:35

1 stop7h 55m

Rennes St Jacques

Mon 10/8

18:05-20:55

1 stop3h 50m

£282

Flights are sorted by cheapest return flights first.

Deals found on 20/5

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
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.

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 23 May 2026.
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
1,903 reviews
Check prices

Overall

6.9

Entertainment

5.5

Comfort

6.8

Boarding

6.7

Crew

7.7

Food

5.9

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
1,903 reviews
easyJet
6.9
Okay
1,903 reviews
Check prices

Overall

6.9

Entertainment

5.5

Comfort

6.8

Boarding

6.7

Crew

7.7

Food

5.9

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 £182, KLM can have you in Rennes from London Heathrow Airport in 10h 05m. The distance from London Heathrow Airport to Rennes is about 242 mi. This flight may include one or multiple stops.

  • 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

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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 23 May 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£138Average£192FlexibilityNo cancel feeOn-time86%
Search easyJet flights

Fly with Cheapflights

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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.

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