Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Rennes from £108

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RNS
26 Jul — 2 Aug1
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
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 26 June 2026.

Mon 17/819:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Fri 21/818:05
RNS
-
LHR
1 stop3h 50m
Multiple Airlines
Deal found 22/6£175
Sun 27/1206:30
LHR
-
RNS
1 stop10h 10m
KLM
Thu 31/1216:45
RNS
-
LHR
1 stop15h 55m
KLM
Deal found 22/6£176
Sat 5/906:15
LHR
-
RNS
1 stop5h 40m
Air France
Tue 15/911:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 22/6£181
Sun 6/919:45
LHR
-
RNS
1 stop13h 35m
Air France
Tue 15/911:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 22/6£189
Mon 17/820:55
LHR
-
RNS
2 stops12h 25m
KLM
Fri 21/818:05
RNS
-
LHR
1 stop23h 10m
KLM
Deal found 22/6£190
Tue 4/819:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Thu 13/818:05
RNS
-
LHR
1 stop3h 50m
Multiple Airlines
Deal found 25/6£191
Sun 6/919:45
LHR
-
RNS
1 stop13h 35m
Air France
Mon 14/911:05
RNS
-
LHR
1 stop8h 30m
Air France
Deal found 22/6£196
Mon 7/919:45
LHR
-
RNS
1 stop13h 35m
Air France
Tue 15/911:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 22/6£197
Sat 11/718:35
LHR
-
RNS
2 stops38h 45m
KLM
Mon 13/718:05
RNS
-
LHR
1 stop14h 35m
KLM
Deal found 24/6£200
Mon 13/720:55
LHR
-
RNS
2 stops12h 25m
KLM
Thu 13/818:05
RNS
-
LHR
1 stop3h 50m
KLM
Deal found 22/6£202
Mon 17/819:15
LHR
-
RNS
2 stops14h 05m
KLM
Wed 19/817:50
RNS
-
LHR
1 stop26h 35m
KLM
Deal found 22/6£206
Wed 2/920:55
LHR
-
RNS
2 stops12h 25m
KLM
Thu 10/914:25
RNS
-
LHR
1 stop7h 30m
KLM
Deal found 26/6£209

Find flight deals from Heathrow to Rennes

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Rennes (RNS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 26 June 2026.

Round-trip from

£175

One-way from

£108

Popular in

April

Cheapest in

January

Average price

£180
KLM
  • KLM
  • 17/8-21/8
  • 2 total stops
  • 17h 25m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 5/9
  • 2 total stops
  • 18h 35m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Rennes that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 June 2026.
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 - RNS

LHRRNS

London Heathrow

Wed 2/9

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Thu 10/9

14:25-19:25

1 stop6h 00m

£191

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 9/10

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Sun 11/10

14:25-19:30

1 stop6h 05m

£214

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 9/10

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Sun 11/10

14:25-20:55

1 stop7h 30m

£234

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 7/8

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Mon 17/8

11:05-21:25

1 stop11h 20m

£238

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 7/8

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Sun 16/8

18:05-20:55

1 stop3h 50m

£243

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 11/9

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Sun 13/9

14:25-20:55

1 stop7h 30m

£249

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Thu 1/10

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Sun 4/10

14:25-20:55

1 stop7h 30m

£254
Fastest return journey

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 7/8

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Sun 16/8

18:05-20:55

1 stop3h 50m

£259

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sat 15/8

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Sat 22/8

18:05-20:55

1 stop3h 50m

£260

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Fri 24/7

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Tue 28/7

11:05-21:25

1 stop11h 20m

£278

Flights are sorted by cheapest return flights first.

Deals found on 23/6

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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
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.

Reviews of airlines servicing Rennes

Get insights into the airlines that provide service to Rennes. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rennes. Reviews last updated 26 June 2026.
Get a feel of what it's like to fly with easyJet from London Heathrow Airport to Rennes by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
easyJet
6.9
Okay
1,912 reviews
Check prices

Comfort

6.8

Overall

6.9

Entertainment

5.5

Boarding

6.7

Food

5.9

Crew

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LTN - LEI

Staff professional and friendly Plane clean and comfortable One passenger had problem with his seat and the crew sorted it immediately.
easyJet
6.9
Okay
1,912 reviews
easyJet
6.9
Okay
1,912 reviews
Check prices

Comfort

6.8

Overall

6.9

Entertainment

5.5

Boarding

6.7

Food

5.9

Crew

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LTN - LEI

Staff professional and friendly Plane clean and comfortable One passenger had problem with his seat and the crew sorted it immediately.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Rennes. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 1 airline.

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

    For as low as £214, KLM can have you in Rennes from London Heathrow Airport in 12h 25m. 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

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.

Top airline flying from Heathrow to Rennes

Discover the top airline that operate flights from Heathrow to Rennes. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 June 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£141Average£195FlexibilityNo cancel feeOn-time86%
Search easyJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.