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Cheap flights from London Heathrow Airport to Rennes from £88

LHR — RNS
17 Nov — 24 Nov1
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

Thu 3/1206:30 -
1 stop8h 45m
Sun 6/1211:05 -
1 stop6h 30m
Deal found 14/10£160
Fri 6/1119:25 -
1 stop13h 55m
Thu 12/1111:05 -
1 stop8h 15m
Deal found 16/10£169
Wed 4/1120:25 -
1 stop18h 50m
Wed 25/1116:25 -
1 stop16h 15m
Deal found 15/10£169
Fri 20/1117:35 -
1 stop15h 45m
Sun 22/1111:05 -
1 stop24h 25m
Deal found 16/10£173

Find flight deals from Heathrow to Rennes

Round-trip from

£160

One-way from

£88

Popular in

April

Cheapest in

January

Average price

£150
Air France
  • Air France
  • 3/12-6/12
  • 2 total stops
  • 15h 15m total
  • London to Rennes
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KLM
  • KLM
  • 7/12-31/12
  • 1 total stop
  • 5h 15m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£8 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in October 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

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Price

Cheapest return flight

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 14/12

06:30-16:15

1 stop8h 45m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£100

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 5/12

14:05-10:20

2 stops19h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£105

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 28/11

17:50-10:20

2 stops15h 30m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£108

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 21/2

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£110

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Wed 4/11

06:20-17:40

2 stops10h 20m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£119

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 26/11

20:25-10:20

2 stops12h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£122

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 29/12

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£128

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 5/11

14:45-10:20

1 stop18h 35m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£129

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 29/11

06:30-10:20

2 stops26h 50m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£135
Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Wed 4/11

10:00-16:15

1 stop5h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£142

Flights are sorted by cheapest return flights first.

Deals found on 17/10

Showing 1-10 of 18 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

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 0 different airlines.

  • How long is the flight from London Heathrow Airport to Rennes?

    For as low as £172, KLM can have you in Rennes from London Heathrow Airport in 20h 15m. 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

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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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