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Cheap flights from London Heathrow Airport to Rennes from £88

LHR — RNS
10 Dec — 17 Dec1
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

Mon 7/1210:00 -
1 stop5h 15m
Mon 14/1216:45 -
1 stop17h 15m
Deal found 9/11£169
Fri 13/1119:25 -
1 stop13h 55m
Tue 17/1111:05 -
1 stop3h 40m
Deal found 7/11£171
Thu 3/1219:20 -
1 stop14h 00m
Sun 6/1211:05 -
1 stop21h 50m
Deal found 5/11£173
Wed 2/1210:00 -
1 stop5h 15m
Sun 6/1211:05 -
1 stop6h 30m
Deal found 9/11£174
Mon 7/1219:20 -
1 stop14h 00m
Mon 14/1216:45 -
1 stop5h 05m
Deal found 9/11£175
Sun 6/1206:30 -
1 stop10h 10m
Sun 13/1211:05 -
1 stop6h 30m
Deal found 6/11£175
Fri 20/1114:45 -
1 stop18h 35m
Sun 22/1111:05 -
1 stop6h 30m
Deal found 7/11£176
Thu 12/1119:20 -
1 stop14h 00m
Thu 19/1111:05 -
1 stop3h 40m
Deal found 8/11£179
Fri 11/1220:25 -
1 stop20h 15m
Sun 13/1218:10 -
1 stop20h 40m
Deal found 9/11£180
Sun 8/1115:00 -
1 stop18h 20m
Thu 12/1110:35 -
2 stops8h 45m
Deal found 8/11£182

Find flight deals from Heathrow to Rennes

Round-trip from

£169

One-way from

£88

Popular in

April

Cheapest in

January

Average price

£103
KLM
  • KLM
  • 7/12-14/12
  • 2 total stops
  • 22h 30m total
  • London to Rennes
Search Deals
14/1-31/12
  • 14/1-31/12
  • 2 total stops
  • 19h 05m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£7 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 November 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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Depart

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Price

Cheapest return flight

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 14/1

20:50-16:55

2 stops19h 05m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£88
Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 14/1

06:30-13:25

1 stop5h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£96

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

£102

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 15/12

08:40-16:15

1 stop6h 35m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£109

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 8/3

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

Fri 27/11

19:25-10:20

1 stop13h 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

Mon 8/3

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£113

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 10/12

14:45-10:20

1 stop18h 35m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£116

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Fri 1/1

17:35-10:20

1 stop15h 45m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£139

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 13/2

16:25-10:20

2 stops16h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£142

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 21 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 £176, Air France can have you in Rennes from London Heathrow Airport in 18h 35m. The distance from London Heathrow Airport to Rennes is about 242 mi. This flight may include one or multiple stops.

  • 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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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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