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Cheap flights from London Heathrow Airport to Saint-Denis from £279

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RUN
30 Dec — 6 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Saint-Denis

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Saint-Denis (RUN). 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 30 November 2025.

Round-trip from

£573

One-way from

£279

Popular in

October

Cheapest in

June

Average price

£942
23/1-5/2
  • 23/1-5/2
  • 3 total stops
  • 48h 05m total
  • London to Saint-Denis
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5/12
  • 5/12
  • 1 total stop
  • 14h 40m total
  • London to Saint-Denis
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£214 potential increase over avg. return price).
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Cheapest flight prices on average. 7% potential price decrease (£47 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find flight deals from Heathrow to Saint-Denis

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Saint-Denis
Explore the most affordable flight options available from Heathrow to Saint-Denis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 November 2025.

Wed 3/1215:15LHR - RUN
1 stop16h 05mMultiple Airlines
Wed 10/1221:30RUN - LHR
1 stop20h 55mMultiple Airlines
Deal found 28/11£683
Mon 1/1207:45LHR - RUN
1 stop19h 35mMultiple Airlines
Mon 8/1210:40RUN - LHR
1 stop29h 30mMultiple Airlines
Deal found 30/11£715
Tue 2/1215:15LHR - RUN
1 stop14h 40mMultiple Airlines
Wed 31/1208:30RUN - LHR
1 stop33h 55mMultiple Airlines
Deal found 29/11£872
Sat 13/1220:50LHR - RUN
3 stops35h 50mMultiple Airlines
Tue 13/123:00RUN - LHR
1 stop19h 25mMultiple Airlines
Deal found 29/11£874

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Saint-Denis 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 30 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Saint-Denis that are best for you.

Fly from

Heathrow

Fly to

Saint-Denis

Route

Depart

Return

Price

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Tue 13/1

15:15-09:55

1 stop14h 40m

Saint-Denis Gillot

Tue 20/1

23:00-14:25

1 stop19h 25m

£611

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Fri 23/1

22:15-09:10

3 stops54h 55m

Saint-Denis Gillot

Thu 5/2

23:00-14:25

1 stop19h 25m

£625

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 22/1

15:15-11:20

1 stop16h 05m

Saint-Denis Gillot

Fri 6/2

21:30-09:10

2 stops39h 40m

£642

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Tue 17/2

15:15-09:55

1 stop14h 40m

Saint-Denis Gillot

Tue 3/3

13:00-15:30

2 stops30h 30m

£746

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sat 28/3

15:15-09:55

1 stop14h 40m

Saint-Denis Gillot

Sat 4/4

08:00-09:10

2 stops28h 10m

£752

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 12/2

15:15-09:55

1 stop14h 40m

Saint-Denis Gillot

Tue 3/3

13:00-15:30

2 stops30h 30m

£771

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Mon 16/2

15:15-11:20

1 stop16h 05m

Saint-Denis Gillot

Tue 3/3

22:00-14:25

1 stop20h 25m

£790

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sun 15/2

15:15-11:20

1 stop16h 05m

Saint-Denis Gillot

Tue 3/3

22:00-14:25

1 stop20h 25m

£827

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Tue 17/2

11:30-09:10

1 stop17h 40m

Saint-Denis Gillot

Wed 25/2

20:40-07:55

1 stop15h 15m

£845

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Fri 5/12

15:15-09:55

1 stop14h 40m

£279

Flights are sorted by cheapest return flights first.

Deals found on 28/11

Best time to book a flight from Heathrow to Saint-Denis

Have a flexible travel schedule? Discover the best time to fly to Saint-Denis 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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Saint-Denis

What is the cheapest month to book a flight from London Heathrow Airport to Saint-Denis?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Saint-Denis (average of £81). Flying from London Heathrow Airport to Saint-Denis in December is currently the most expensive (average of £1,461). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London Heathrow Airport to Saint-Denis?

Reviews of airlines servicing Saint-Denis

Get insights into the airlines that provide service to Saint-Denis. 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 Saint-Denis. Reviews last updated 30 November 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Saint-Denis, such as Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,500 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Food

7.0

Overall

7.4

Crew

8.2

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Hazel,Nov 2025

CDG - FCO

My experience with Air France was very disappointing. They claimed the flight was full and required me to check in my carry-on bag, yet once on board, there was plenty of overhead compartment space available. Several passengers with larger and heavier bags were allowed to bring theirs on without any issue. The inconsistency felt unfair and frustrating.
Air France
7.4
Good
1,500 reviews
Air France
7.4
Good
1,500 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Food

7.0

Overall

7.4

Crew

8.2

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Hazel,Nov 2025

CDG - FCO

My experience with Air France was very disappointing. They claimed the flight was full and required me to check in my carry-on bag, yet once on board, there was plenty of overhead compartment space available. Several passengers with larger and heavier bags were allowed to bring theirs on without any issue. The inconsistency felt unfair and frustrating.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Saint-Denis. 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 Saint-Denis from London Heathrow?

    Saint-Denis Gillot (RUN) is the airport you will fly into if you book a flight from London Heathrow to Saint-Denis. You should not have trouble finding flights to Gillot from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Saint-Denis airport from London Heathrow. It is only a 3.9 mi journey from Gillot (RUN) to Saint-Denis’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Saint-Denis round-trip?

    Air Austral, at £652, was found to be the cheapest airline from London Heathrow Airport to Saint-Denis. An alternate airline flying to your destination would be Air France. These flights start at 25% lower than the current average price 3 months from now.

  • Can I find deals for flights from Heathrow to Saint-Denis that include hotel bookings?

    Yes. In addition to deals on Heathrow to Saint-Denis flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Saint-Denis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Saint-Denis.

  • Can I find deals for business class flights from Heathrow to Saint-Denis?

    Yes. Cheapflights offers flight deals from Heathrow to Saint-Denis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Saint-Denis?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Saint-Denis (average of £81). Flying from London Heathrow Airport to Saint-Denis in December is currently the most expensive (average of £1,461). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Saint-Denis

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Saint-Denis flights

Top 2 airlines flying from Heathrow to Saint-Denis

Discover the top 2 airlines that operate flights from Heathrow to Saint-Denis. 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 30 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air AustralCheapest£652Average£1,475FlexibilityNo cancel feeOn-time66%
Search Air Austral flights
Air FranceCheapest£840Average£1,275FlexibilityNo cancel feeOn-time77%
Search Air France flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Saint-Denis?

Deals for Heathrow to Saint-Denis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Saint-Denis?

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 Saint-Denis from Heathrow.

Can Cheapflights find flights from Heathrow to Saint-Denis with no change fees?

Need flexible booking options for your flight to Saint-Denis 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 Saint-Denis become cheaper?

Yes! Start tracking prices for Heathrow to Saint-Denis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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