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Cheap flights from London Heathrow Airport to Rennes from £98

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RNS
29 Jun — 6 Jul1
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 30 May 2026.

Wed 1/719:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Tue 7/718:05
RNS
-
LHR
1 stop14h 35m
Multiple Airlines
Deal found 29/5£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 30/5£156
Fri 12/619:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Thu 18/614:25
RNS
-
LHR
1 stop7h 30m
Multiple Airlines
Deal found 27/5£175
Tue 23/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Tue 30/611:05
RNS
-
LHR
1 stop11h 20m
Air France
Deal found 26/5£176
Wed 3/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 17/611:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 29/5£176
Fri 12/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Tue 16/611:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 27/5£177
Thu 5/1110:00
LHR
-
RNS
1 stop5h 15m
KLM
Mon 9/1116:45
RNS
-
LHR
1 stop5h 05m
KLM
Deal found 26/5£178
Wed 3/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Sat 6/613:35
RNS
-
LHR
1 stop19h 20m
Air France
Deal found 27/5£180
Tue 30/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 8/711:05
RNS
-
LHR
1 stop8h 30m
Air France
Deal found 30/5£181
Fri 5/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Mon 8/611:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 27/5£181
Thu 25/608:40
LHR
-
RNS
1 stop4h 15m
Multiple Airlines
Thu 2/711:05
RNS
-
LHR
1 stop8h 30m
Multiple Airlines
Deal found 28/5£183
Sun 7/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 17/611:05
RNS
-
LHR
1 stop3h 40m
Air France
Deal found 26/5£185

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 30 May 2026.

Round-trip from

£155

One-way from

£98

Popular in

April

Cheapest in

January

Average price

£157
KLM
  • KLM
  • 1/7-7/7
  • 2 total stops
  • 28h 10m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 6/10
  • 1 total stop
  • 17h 40m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£10 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 30 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

Thu 5/11

20:25-10:20

2 stops12h 55m

Rennes St Jacques

Mon 9/11

16:45-20:50

1 stop5h 05m

£190

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 22/6

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Fri 26/6

14:25-19:25

1 stop6h 00m

£205

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Thu 9/7

09:55-17:35

1 stop6h 40m

Rennes St Jacques

Tue 14/7

11:05-19:25

2 stops9h 20m

£237
Fastest return journey

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Thu 18/6

08:40-13:55

1 stop4h 15m

Rennes St Jacques

Sun 21/6

14:25-17:50

1 stop4h 25m

£239

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sat 11/7

06:30-17:35

1 stop10h 05m

Rennes St Jacques

Sat 18/7

11:05-21:25

1 stop11h 20m

£241

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Tue 14/7

11:45-17:35

1 stop4h 50m

Rennes St Jacques

Fri 17/7

18:05-20:55

1 stop3h 50m

£252

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 19/7

06:30-17:35

1 stop10h 05m

Rennes St Jacques

Sun 2/8

18:05-20:55

1 stop3h 50m

£262

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 3/7

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Wed 8/7

11:05-19:25

2 stops9h 20m

£275

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Wed 29/7

06:30-17:20

1 stop9h 50m

Rennes St Jacques

Thu 30/7

11:05-16:35

1 stop6h 30m

£283

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Tue 16/6

08:55-17:40

2 stops7h 45m

Rennes St Jacques

Wed 17/6

10:35-18:35

2 stops9h 00m

£295

Flights are sorted by cheapest return flights first.

Deals found on 29/5

Showing 1-10 of 23 resultsSorted by cheapest first
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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 30 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
1,902 reviews
Check prices

Entertainment

5.5

Overall

6.9

Food

5.9

Crew

7.7

Boarding

6.7

Comfort

6.8

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
1,902 reviews
easyJet
6.9
Okay
1,902 reviews
Check prices

Entertainment

5.5

Overall

6.9

Food

5.9

Crew

7.7

Boarding

6.7

Comfort

6.8

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 £190, KLM can have you in Rennes from London Heathrow Airport in 12h 55m. The distance from London Heathrow Airport to Rennes is about 242 mi.

  • 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 30 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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