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

For as low as £187, 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. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Rennes ranges from 38.0 - 75.0 inches per month. October is typically the wettest month, when rainfall can reach 75.0 mm. August is typically the driest time to visit Rennes when rainfall is around 38.0 mm.

If weather is an important factor for your trip to Rennes, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.0 C).

What is the cheapest time of day to fly from LHR to RNS?

When flying from London Heathrow Airport to Rennes, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

£86+ Cheap Flights from London Heathrow Airport to Rennes

Cheap flight deals from Heathrow to Rennes

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Heathrow to Rennes
Explore the most affordable flight options available from Heathrow to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Sat 21/1108:40 -

1 stop8h 00m

Sat 28/1111:05 -

1 stop6h 30m

Deal found 7/10£172

Mon 2/1106:30 -

1 stop8h 45m

Mon 9/1116:50 -

1 stop5h 00m

Deal found 5/10£173

Fri 6/1120:25 -

1 stop20h 15m

Sun 8/1118:10 -

1 stop15h 50m

Deal found 6/10£175

Fri 6/1119:25 -

1 stop13h 55m

Thu 12/1110:35 -

2 stops8h 45m

Deal found 3/10£182

Thu 3/1206:30 -

1 stop8h 45m

Sun 6/1218:10 -

1 stop14h 30m

Deal found 7/10£184

Wed 4/1117:50 -

2 stops15h 30m

Wed 11/1116:45 -

1 stop5h 05m

Deal found 5/10£186

Fri 6/1120:25 -

2 stops12h 55m

Thu 12/1111:05 -

1 stop11h 20m

Deal found 3/10£187

Wed 18/1108:40 -

1 stop6h 35m

Wed 25/1116:25 -

1 stop16h 15m

Deal found 4/10£188

Fri 13/1120:25 -

2 stops12h 55m

Wed 18/1116:45 -

1 stop5h 05m

Deal found 6/10£190

Fri 20/1115:45 -

1 stop24h 55m

Sun 22/1118:10 -

1 stop23h 50m

Deal found 5/10£192

Find flight deals from Heathrow to Rennes

Round-trip from	£172
One-way from	£86
Popular in	April
Cheapest in	January
Average price	£151

Air France
21/11-28/11
2 total stops
14h 30m total
London to Rennes

Search Deals

KLM
21/11-31/12
1 total stop
8h 00m total
London to Rennes

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£8 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.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Thu 3/12

08:40-16:15

1 stop6h 35m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£91

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 6/12

06:30-17:40

1 stop10h 10m

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 15/2

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

Sat 20/2

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£116

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

Mon 23/11

17:35-09:50

2 stops15h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£129

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sat 21/11

16:25-10:20

2 stops16h 55m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£154

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 1/11

19:20-10:20

1 stop14h 00m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£155

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Sun 18/10

06:30-13:55

1 stop6h 25m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£166

Fastest return journey

LondonRennes

LHR London Heathrow - RNS Rennes St Jacques

LHRRNS

London Heathrow

Tue 27/10

10:00-16:15

1 stop5h 15m

Rennes St Jacques

Wed 31/12

00:00-00:00

Nonstop0h 00m

£175

Flights are sorted by cheapest return flights first.

Deals found on 5/10

Showing 1-10 of 20 resultsSorted by cheapest first

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.

LHR-RNS

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 £187, 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. 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to Brittany

Flights by cabin class

Other flight options

Other flights from Heathrow

Popular flights

Rennes flight routes

Alternative routes for Heathrow to Rennes

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Rennes?

When you search for this flight from Heathrow to Rennes, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Rennes?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Rennes from Heathrow.

Can Cheapflights find flights from Heathrow to Rennes with no change fees?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Rennes from £86

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Rennes

Cheapest flights from Heathrow to RennesExplore the most affordable flight options available from Heathrow to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Explore the most affordable flight options available from Heathrow to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Best flights from Heathrow to RennesDiscover carefully curated flight deals from Heathrow to Rennes that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Discover carefully curated flight deals from Heathrow to Rennes that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Heathrow to RennesDiscover last-minute flight deals from Heathrow to Rennes. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Rennes. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Heathrow to RennesSearch for one-way flight options from Heathrow to Rennes. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Search for one-way flight options from Heathrow to Rennes. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Find flight deals from Heathrow to Rennes

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Rennes that are best for you.

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.

Related info for your journey

What airport do you fly into for flights to Rennes from London Heathrow?

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

Can I find deals for flights from Heathrow to Rennes that include hotel bookings?

How can I find direct flights from Heathrow to Rennes?

Can I find deals for business class flights from Heathrow to Rennes?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Rennes

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Rennes by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Brittany

Book a non-stop flight to one of these other cities located in Brittany.

Search flights from Heathrow to Rennes by cabin class

Find flights from Heathrow to Rennes, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Rennes flights

Browse other Heathrow and Rennes flight options. Last updated on 8 October 2026.

Other flights from Heathrow

Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to Rennes

Explore flights to Rennes departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Rennes?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Rennes?

Can Cheapflights find flights from Heathrow to Rennes with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Rennes become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to Rennes
Explore the most affordable flight options available from Heathrow to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Best flights from Heathrow to Rennes
Discover carefully curated flight deals from Heathrow to Rennes that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Heathrow to Rennes
Discover last-minute flight deals from Heathrow to Rennes. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Heathrow to Rennes
Search for one-way flight options from Heathrow to Rennes. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.