$152 Cheap Flights from London (LHR) to Rennes (RNS)

View $152 flight on Sat, Dec 6, 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Rennes (RNS-Saint-Jacques)

Cheap Flights from London to Rennes (LHR-RNS)

Prices were available within the past 7 days and start at $152 for one-way flights and $285 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, Nov 19 - Sat, Nov 22
LHR
London
RNS
Rennes
$285 Roundtrip, found 22 hours ago
$285
Roundtrip
found 22 hours ago
Select KLM flight, departing Wed, Nov 19 from London to Rennes, returning Sat, Nov 22, priced at $285 found 22 hours ago
KLM
Wed, Mar 11 - Tue, Mar 24
LHR
London
RNS
Rennes
$288 Roundtrip, found 5 days ago
$288
Roundtrip
found 5 days ago
Select KLM flight, departing Wed, Mar 11 from London to Rennes, returning Tue, Mar 24, priced at $288 found 5 days ago
KLM
Wed, Mar 25 - Wed, Apr 8
LHR
London
RNS
Rennes
$293 Roundtrip, found 5 days ago
$293
Roundtrip
found 5 days ago
Select KLM flight, departing Wed, Mar 25 from London to Rennes, returning Wed, Apr 8, priced at $293 found 5 days ago
Air France
Sat, Nov 8 - Tue, Nov 25
LHR
London
RNS
Rennes
$297 Roundtrip, found 6 days ago
$297
Roundtrip
found 6 days ago
Select Air France flight, departing Sat, Nov 8 from London to Rennes, returning Tue, Nov 25, priced at $297 found 6 days ago
KLM
Sat, Apr 4 - Tue, Apr 14
LHR
London
RNS
Rennes
$300 Roundtrip, found 5 days ago
$300
Roundtrip
found 5 days ago
Select KLM flight, departing Sat, Apr 4 from London to Rennes, returning Tue, Apr 14, priced at $300 found 5 days ago
KLM
Thu, Mar 12 - Tue, Mar 24
LHR
London
RNS
Rennes
$302 Roundtrip, found 5 days ago
$302
Roundtrip
found 5 days ago
Select KLM flight, departing Thu, Mar 12 from London to Rennes, returning Tue, Mar 24, priced at $302 found 5 days ago
KLM
Thu, Dec 25 - Sun, Jan 11
LHR
London
RNS
Rennes
$306 Roundtrip, found 6 days ago
$306
Roundtrip
found 6 days ago
Select KLM flight, departing Thu, Dec 25 from London to Rennes, returning Sun, Jan 11, priced at $306 found 6 days ago
KLM
Wed, Mar 25 - Tue, Apr 7
LHR
London
RNS
Rennes
$308 Roundtrip, found 5 days ago
$308
Roundtrip
found 5 days ago
Select KLM flight, departing Wed, Mar 25 from London to Rennes, returning Tue, Apr 7, priced at $308 found 5 days ago
KLM
Wed, Mar 18 - Sat, Apr 4
LHR
London
RNS
Rennes
$312 Roundtrip, found 5 days ago
$312
Roundtrip
found 5 days ago
Select KLM flight, departing Wed, Mar 18 from London to Rennes, returning Sat, Apr 4, priced at $312 found 5 days ago
KLM
Sat, Nov 15 - Tue, Nov 18
LHR
London
RNS
Rennes
$314 Roundtrip, found 22 hours ago
$314
Roundtrip
found 22 hours ago
Select KLM flight, departing Sat, Nov 15 from London to Rennes, returning Tue, Nov 18, priced at $314 found 22 hours ago

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS) cost?
Secure a cheap one-way flight from $152 or cheap return flight from $285 from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS)?
The cheapest month to fly from LHR to RNS is November, when demand is low. Off-peak months are often when airlines offer better prices between these airports.
Which airlines fly direct from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS)?
There are no direct flights from London (LHR-Heathrow) to Saint-Jacques Airport (RNS). However, you can find other airports with nonstop flights. Start your journey at Gatwick Airport (LGW) and travel straight to Rennes without layovers.
What is the cheapest airline that flies from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from LHR to RNS. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS)?
Nonstop flights from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from LHR to RNS?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS)?
To avoid possible delays on the Heathrow Airport (LHR) to Saint-Jacques Airport (RNS) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS) last-minute?
Holding off until just before your departure to book your flight from LHR to RNS often results in higher prices. While you may find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible for the best chance of scoring a bargain.
Is it cheaper to book a LHR to RNS flight and hotel package?
Compared with arranging hotels and flights separately, booking a LHR to RNS flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the stress out of travel planning. Simply pick your flights and choose from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Saint-Jacques Airport (RNS)?
If you reserved your LHR to RNS flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Heathrow
Destination airport
Saint-Jacques
Airlines serving
Air France, KLM
Roundtrip price
$284
Distance
241 mi

Book with confidence

London to Rennes Flights

The cheapest times to fly from London to Rennes

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Rennes are during the month of November. You can find some of the cheapest flights from London to Rennes with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Rennes

Sunday is one of the best days to book for cheap flights from London to Rennes: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Rennes

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Rennes in 2025. You can also book with separate airlines for your outbound and return journeys, from $152 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Rennes flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Rennes airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

London to Rennes Flights

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*Available to One Key members.