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Cheap flights from London Heathrow Airport to Rennes from £93

LHR — RNS
20 Sep — 27 Sep1
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

Fri 9/1019:45 -
1 stop13h 35m
Mon 12/1011:05 -
1 stop6h 30m
Deal found 20/8£154
Wed 16/919:45 -
1 stop13h 35m
Wed 23/914:25 -
1 stop7h 30m
Deal found 18/8£170
Fri 9/1019:45 -
1 stop13h 35m
Sun 11/1014:25 -
1 stop7h 30m
Deal found 17/8£172
Sat 3/1019:45 -
1 stop13h 35m
Sat 10/1017:20 -
1 stop4h 35m
Deal found 19/8£175
Tue 8/906:30 -
1 stop6h 25m
Tue 15/911:05 -
1 stop8h 30m
Deal found 19/8£176
Mon 7/919:45 -
1 stop13h 35m
Mon 14/911:05 -
1 stop8h 30m
Deal found 19/8£177
Wed 7/1008:55 -
2 stops7h 45m
Mon 12/1011:05 -
1 stop6h 30m
Deal found 20/8£180
Thu 3/1210:00 -
1 stop5h 15m
Sun 6/1218:10 -
1 stop3h 40m
Deal found 19/8£182
Tue 8/906:15 -
2 stops10h 25m
Tue 15/911:05 -
1 stop6h 30m
Deal found 19/8£183

Find flight deals from Heathrow to Rennes

Round-trip from

£154

One-way from

£93

Popular in

April

Cheapest in

January

Average price

£183
Air France
  • Air France
  • 9/10-12/10
  • 2 total stops
  • 20h 05m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 26/10
  • 1 total stop
  • 8h 45m 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 August 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.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Fri 9/10

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 12/10

11:05-16:35

1 stop6h 30m

£154

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 15/9

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Tue 22/9

14:25-19:25

1 stop6h 00m

£172

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 31/8

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Tue 8/9

11:05-19:25

2 stops9h 20m

£187

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 12/9

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 14/9

11:05-18:35

1 stop8h 30m

£201

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Fri 9/10

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 12/10

11:05-20:55

2 stops10h 50m

£202

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Wed 9/9

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Wed 16/9

14:25-20:55

1 stop7h 30m

£225

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 31/8

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Fri 4/9

14:25-20:55

1 stop7h 30m

£225

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Fri 4/9

11:45-10:20

2 stops21h 35m

Rennes St Jacques

Mon 7/9

14:25-07:40

1 stop18h 15m

£229

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Wed 9/9

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Wed 16/9

14:25-19:25

1 stop6h 00m

£237
Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 24/10

06:30-16:50

1 stop9h 20m

Rennes St Jacques

Wed 28/10

16:45-20:50

1 stop5h 05m

£238

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Showing 1-10 of 22 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
1,926 reviews
Check prices

Crew

7.7

Comfort

6.8

Overall

6.9

Boarding

6.7

Entertainment

5.5

Food

5.9

Reviews

1 / 20
10.0
Excellent

David J,Jul 2026

LGW - BOD

great pilot who explained tye delays due to the fires in France
easyJet
6.9
Okay
1,926 reviews
easyJet
6.9
Okay
1,926 reviews
Check prices

Crew

7.7

Comfort

6.8

Overall

6.9

Boarding

6.7

Entertainment

5.5

Food

5.9

Reviews

1 / 20
10.0
Excellent

David J,Jul 2026

LGW - BOD

great pilot who explained tye delays due to the fires in France

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 £154, Air France can have you in Rennes from London Heathrow Airport in 13h 35m. 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£136Average£189FlexibilityNo 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.

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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