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Cheap flights from London Heathrow Airport to Rennes from £91

LHR — RNS
23 Nov — 30 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 19/10£166
Tue 10/1106:30 -
1 stop8h 45m
Sun 15/1118:10 -
1 stop14h 30m
Deal found 23/10£170
Fri 6/1119:25 -
1 stop13h 55m
Tue 10/1111:05 -
1 stop6h 30m
Deal found 22/10£173
Mon 7/1217:35 -
2 stops15h 15m
Mon 14/1216:45 -
1 stop5h 05m
Deal found 23/10£179
Fri 4/1217:35 -
1 stop15h 45m
Sun 6/1218:10 -
1 stop3h 40m
Deal found 24/10£180
Mon 16/1106:30 -
1 stop8h 45m
Mon 23/1116:20 -
1 stop17h 40m
Deal found 19/10£181

Find flight deals from Heathrow to Rennes

Round-trip from

£169

One-way from

£91

Popular in

April

Cheapest in

January

Average price

£149
Air France
  • Air France
  • 3/12-6/12
  • 2 total stops
  • 15h 15m total
  • London to Rennes
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KLM
  • KLM
  • 1/12-31/12
  • 1 total stop
  • 8h 45m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£9 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

Return

Price

Cheapest return flight

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 3/12

06:30-16:15

1 stop8h 45m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 22/2

06:30-16:15

1 stop8h 45m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£96

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 27/2

06:30-17:40

1 stop10h 10m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£96

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 20/2

17:50-10:20

2 stops15h 30m

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 24/2

20:25-10:20

2 stops12h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£110

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

£114

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 1/12

17:35-09:50

2 stops15h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£118

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 29/3

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£120

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 31/12

20:50-11:45

2 stops13h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£125
Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Wed 16/12

10:00-16:15

1 stop5h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£130

Flights are sorted by cheapest return flights first.

Deals found on 24/10

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 £181, KLM can have you in Rennes from London Heathrow Airport in 8h 45m. 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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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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