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Cheap flights from London Heathrow Airport to Rennes from £90

LHR — RNS
3 Nov — 10 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

Sat 14/1119:20 -
1 stop14h 00m
Sat 21/1118:10 -
1 stop17h 35m
Deal found 30/9£171
Fri 6/1119:25 -
1 stop13h 55m
Thu 12/1116:45 -
1 stop5h 05m
Deal found 29/9£173
Wed 18/1106:30 -
1 stop8h 45m
Wed 25/1116:25 -
1 stop24h 40m
Deal found 3/10£176
Sun 1/1120:25 -
1 stop18h 50m
Sun 8/1118:10 -
1 stop17h 35m
Deal found 1/10£177
Fri 27/1120:25 -
1 stop20h 15m
Mon 30/1116:45 -
1 stop5h 05m
Deal found 29/9£177
Fri 4/1206:30 -
1 stop8h 45m
Mon 7/1216:45 -
1 stop5h 05m
Deal found 30/9£180
Fri 6/1119:25 -
1 stop13h 55m
Thu 12/1110:35 -
2 stops8h 45m
Deal found 3/10£182
Tue 8/1206:20 -
2 stops10h 20m
Sun 13/1211:05 -
1 stop11h 20m
Deal found 2/10£183
Sun 8/1117:35 -
2 stops15h 15m
Sat 14/1118:10 -
1 stop17h 35m
Deal found 29/9£183
Tue 27/1020:25 -
2 stops36h 55m
Tue 3/1116:45 -
1 stop15h 55m
Deal found 29/9£185
Sat 14/1116:25 -
2 stops16h 55m
Sat 21/1118:10 -
1 stop14h 30m
Deal found 30/9£186

Find flight deals from Heathrow to Rennes

Round-trip from

£171

One-way from

£90

Popular in

April

Cheapest in

January

Average price

£151
KLM
  • KLM
  • 14/11-21/11
  • 2 total stops
  • 31h 35m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 29/11-31/12
  • 1 total stop
  • 4h 55m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£9 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 October 2026
Search Deals

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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Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 29/11

11:45-17:40

1 stop4h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£90

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 23/11

15:45-15:50

1 stop23h 05m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£94

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 23/11

17:35-09:50

2 stops15h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£119

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Fri 13/11

20:25-10:20

2 stops12h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£119

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Mon 23/11

07:00-15:20

1 stop7h 20m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£126

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 18/10

17:35-10:20

1 stop15h 45m

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

19:30-11:45

1 stop15h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£137

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 15/11

20:25-10:20

2 stops36h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£145

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 27/10

06:30-16:15

1 stop8h 45m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£158

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 20/10

19:15-10:20

2 stops14h 05m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£159

Flights are sorted by cheapest return flights first.

Deals found on 1/10

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, 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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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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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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