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Cheap flights from London Heathrow Airport to Rennes from £94

LHR — RNS
1 Oct — 8 Oct1
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

Sun 11/1008:40 -
1 stop4h 15m
Wed 14/1014:25 -
1 stop4h 10m
Deal found 28/8£171
Mon 12/1006:30 -
1 stop6h 25m
Sat 31/1018:10 -
1 stop14h 30m
Deal found 30/8£173
Mon 12/1019:45 -
1 stop13h 35m
Sat 31/1018:10 -
1 stop14h 30m
Deal found 30/8£173
Tue 29/908:40 -
1 stop4h 15m
Tue 6/1014:25 -
1 stop6h 00m
Deal found 30/8£174
Fri 9/1019:45 -
1 stop13h 35m
Sun 11/1014:25 -
1 stop7h 30m
Deal found 31/8£175
Fri 9/1019:45 -
1 stop13h 35m
Mon 12/1014:25 -
1 stop4h 10m
Deal found 27/8£176
Sat 10/1017:35 -
1 stop15h 45m
Sun 11/1014:25 -
1 stop7h 30m
Deal found 30/8£176
Sun 25/1020:25 -
1 stop18h 45m
Sat 7/1118:10 -
1 stop14h 30m
Deal found 27/8£178
Fri 6/1119:25 -
1 stop13h 55m
Sun 8/1111:05 -
1 stop21h 50m
Deal found 31/8£180
Mon 28/919:45 -
1 stop13h 35m
Fri 2/1014:25 -
1 stop6h 00m
Deal found 27/8£182
Sun 20/919:45 -
1 stop13h 35m
Sun 27/911:05 -
1 stop21h 50m
Deal found 30/8£185

Find flight deals from Heathrow to Rennes

Round-trip from

£171

One-way from

£94

Popular in

April

Cheapest in

January

Average price

£221
KLM
  • KLM
  • 11/10-14/10
  • 2 total stops
  • 8h 25m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 3/12
  • 1 total stop
  • 6h 35m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£6 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Rennes that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 28/9

20:55-13:55

1 stop16h 00m

Rennes St Jacques

Fri 2/10

14:25-20:55

1 stop7h 30m

£199

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 15/11

06:30-17:40

1 stop10h 10m

Rennes St Jacques

Wed 18/11

16:45-20:50

1 stop5h 05m

£201

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 8/2

17:35-10:10

2 stops15h 35m

Rennes St Jacques

Sun 14/2

14:25-20:50

1 stop7h 25m

£211
Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Wed 11/11

06:30-16:15

1 stop8h 45m

Rennes St Jacques

Sun 15/11

18:10-20:50

1 stop3h 40m

£211

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Fri 9/10

14:45-10:20

2 stops18h 35m

Rennes St Jacques

Mon 12/10

10:30-18:35

2 stops9h 05m

£219

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 12/10

15:20-09:50

2 stops17h 30m

Rennes St Jacques

Mon 19/10

14:25-20:55

1 stop7h 30m

£230

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 12/10

19:15-10:20

2 stops14h 05m

Rennes St Jacques

Mon 19/10

14:25-20:55

1 stop7h 30m

£236

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 15/11

06:30-17:40

1 stop10h 10m

Rennes St Jacques

Wed 18/11

10:35-18:20

2 stops8h 45m

£238

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 11/10

18:35-10:20

2 stops14h 45m

Rennes St Jacques

Sun 18/10

14:25-17:50

1 stop4h 25m

£252
Cheapest one-way
Fastest single journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 11/10

08:40-13:55

1 stop4h 15m

£96

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 21 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

Reviews of airlines servicing Rennes

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
1,927 reviews
Check prices

Comfort

6.8

Entertainment

5.5

Food

5.9

Boarding

6.7

Crew

7.7

Overall

6.9

Reviews

1 / 20
2.0
Mediocre

Aleksandra,Aug 2026

LGW - RMU

Awful plane, old, rickety, ripped seats in places, rubbish left from previous passengers. The crew clothing was tatty, old, unkempt. I have never experienced anything like this. Ryanair had better standards.
easyJet
6.9
Okay
1,927 reviews
easyJet
6.9
Okay
1,927 reviews
Check prices

Comfort

6.8

Entertainment

5.5

Food

5.9

Boarding

6.7

Crew

7.7

Overall

6.9

Reviews

1 / 20
2.0
Mediocre

Aleksandra,Aug 2026

LGW - RMU

Awful plane, old, rickety, ripped seats in places, rubbish left from previous passengers. The crew clothing was tatty, old, unkempt. I have never experienced anything like this. Ryanair had better standards.

Related info for your journey

  • 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 £199, KLM can have you in Rennes from London Heathrow Airport in 16h. 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

Top airline flying from Heathrow to Rennes

AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£137Average£190FlexibilityNo cancel feeOn-time86%
Search easyJet flights

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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.

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