Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Rennes from £90

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RNS
13 Apr — 20 Apr1
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 14 March 2026.

Wed 15/419:45
LHR
-
RNS
1 stop13h 35m
Air France
Wed 22/410:35
RNS
-
LHR
2 stops9h 00m
Air France
Deal found 11/3£166
Mon 27/419:45
LHR
-
RNS
1 stop13h 35m
Air France
Mon 4/511:05
RNS
-
LHR
1 stop24h 25m
Air France
Deal found 13/3£169
Wed 15/419:45
LHR
-
RNS
1 stop13h 35m
Multiple Airlines
Wed 22/414:25
RNS
-
LHR
1 stop4h 10m
Multiple Airlines
Deal found 11/3£169
Fri 3/420:55
LHR
-
RNS
1 stop18h 40m
KLM
Sun 5/414:25
RNS
-
LHR
1 stop18h 15m
KLM
Deal found 11/3£172
Mon 1/619:45
LHR
-
RNS
1 stop13h 35m
Air France
Sun 28/611:05
RNS
-
LHR
1 stop21h 50m
Air France
Deal found 14/3£178
Sun 12/419:45
LHR
-
RNS
1 stop13h 35m
Air France
Mon 27/411:05
RNS
-
LHR
1 stop11h 20m
Air France
Deal found 14/3£181
Wed 10/620:55
LHR
-
RNS
2 stops12h 25m
KLM
Tue 16/614:25
RNS
-
LHR
1 stop6h 00m
KLM
Deal found 13/3£185
Fri 20/319:25
LHR
-
RNS
1 stop14h 10m
Air France
Sun 22/311:05
RNS
-
LHR
1 stop21h 55m
Air France
Deal found 10/3£188
Mon 20/419:45
LHR
-
RNS
1 stop13h 35m
Air France
Sun 26/411:05
RNS
-
LHR
1 stop6h 30m
Air France
Deal found 11/3£191
Sat 11/406:15
LHR
-
RNS
1 stop5h 40m
Air France
Mon 27/411:05
RNS
-
LHR
1 stop11h 20m
Air France
Deal found 10/3£191

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 14 March 2026.

Round-trip from

£166

One-way from

£90

Popular in

July

Cheapest in

January

Average price

£93
Air France
  • Air France
  • 15/4-22/4
  • 3 total stops
  • 22h 35m total
  • London to Rennes
Search Deals
KLM
  • KLM
  • 9/4
  • 1 total stop
  • 17h 40m total
  • London to Rennes
Search Deals
Highest demand for flights based on searches. 31% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 14 March 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

Sun 12/4

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 27/4

11:05-21:25

1 stop11h 20m

£181
Fastest return journey

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 4/5

08:40-13:55

1 stop4h 15m

Rennes St Jacques

Thu 7/5

11:05-16:35

1 stop6h 30m

£206

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 1/6

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Sun 28/6

11:05-19:30

2 stops9h 25m

£206

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Wed 25/3

15:45-10:20

2 stops17h 35m

Rennes St Jacques

Wed 1/4

14:25-19:25

1 stop6h 00m

£213

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 26/4

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Sun 3/5

14:25-19:30

1 stop6h 05m

£216

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Thu 9/4

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Thu 16/4

14:25-20:55

1 stop7h 30m

£218

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Sun 12/4

20:55-10:20

2 stops12h 25m

Rennes St Jacques

Mon 27/4

11:05-17:35

2 stops7h 30m

£258

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Tue 2/6

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Thu 4/6

11:05-18:35

1 stop8h 30m

£267

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 6/4

19:45-10:20

1 stop13h 35m

Rennes St Jacques

Mon 13/4

10:30-16:15

2 stops30h 45m

£272
Cheapest one-way

LondonRennes

LHR - RNS

LHRRNS

London Heathrow

Mon 18/5

20:55-10:20

2 stops12h 25m

£105

Flights are sorted by cheapest return flights first.

Deals found on 11/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 14 March 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
1,886 reviews
Check prices

Entertainment

5.5

Comfort

6.7

Overall

6.9

Boarding

6.7

Food

5.9

Crew

7.6

Reviews

1 / 20
10.0
Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .
easyJet
6.9
Okay
1,886 reviews
easyJet
6.9
Okay
1,886 reviews
Check prices

Entertainment

5.5

Comfort

6.7

Overall

6.9

Boarding

6.7

Food

5.9

Crew

7.6

Reviews

1 / 20
10.0
Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .

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 £181, Air France can have you in Rennes from London Heathrow Airport in 13h 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

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 14 March 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£140Average£194FlexibilityNo 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.