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Cheap flights from London Heathrow Airport to Saint-Denis from £484

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RUN
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 12 December 2025.

Thu 18/1217:35LHR - RUN
2 stops37h 15mAir Mauritius
Sun 18/107:00RUN - LHR
2 stops29h 00mAir Mauritius
Deal found 10/12£1,302
Thu 18/1208:55LHR - RUN
1 stop19h 25mAir France
Sun 18/107:00RUN - LHR
2 stops18h 25mAir France
Deal found 10/12£1,494

Find 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 12 December 2025.

Round-trip from

£484

Popular in

October

Cheapest in

June

Average price

£1,463
25/1-1/2
  • 25/1-1/2
  • 2 total stops
  • 37h 00m total
  • London to Saint-Denis
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£238 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£49 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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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 12 December 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

Fri 6/2

15:15-11:20

1 stop16h 05m

Saint-Denis Gillot

Fri 13/2

21:30-14:25

1 stop20h 55m

£610

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 1/1

09:00-09:55

1 stop20h 55m

Saint-Denis Gillot

Wed 14/1

08:30-13:45

1 stop33h 15m

£615

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sun 25/1

15:15-11:20

1 stop16h 05m

Saint-Denis Gillot

Sun 1/2

21:30-20:05

2 stops26h 35m

£653

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 12/3

10:00-09:10

2 stops19h 10m

Saint-Denis Gillot

Wed 18/3

23:00-14:25

1 stop19h 25m

£708

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 1/1

06:20-05:30

1 stop19h 10m

Saint-Denis Gillot

Thu 15/1

23:00-16:35

1 stop21h 35m

£742

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sun 1/2

17:35-09:10

1 stop35h 35m

Saint-Denis Gillot

Tue 10/2

20:40-10:30

1 stop17h 50m

£788

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Tue 10/3

11:30-09:10

1 stop17h 40m

Saint-Denis Gillot

Fri 20/3

20:40-08:00

1 stop15h 20m

£883

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Fri 9/1

18:50-05:30

2 stops30h 40m

Saint-Denis Gillot

Fri 16/1

08:30-14:25

1 stop33h 55m

£889

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Fri 13/3

11:30-10:50

2 stops19h 20m

Saint-Denis Gillot

Fri 20/3

07:00-08:05

2 stops29h 05m

£915

Flights are sorted by cheapest return flights first.

Deals found on 10/12

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 £78). Flying from London Heathrow Airport to Saint-Denis in December is currently the most expensive (average of £1,444). 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 12 December 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
1,504 reviews
Check prices

Comfort

7.3

Boarding

7.4

Food

7.0

Crew

8.2

Entertainment

7.0

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Alpha Amadu,Dec 2025

CKY - CDG

Super calm and deliberate, staff are exceptionally down to detail
Air France
7.4
Good
1,504 reviews
Air France
7.4
Good
1,504 reviews
Check prices

Comfort

7.3

Boarding

7.4

Food

7.0

Crew

8.2

Entertainment

7.0

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Alpha Amadu,Dec 2025

CKY - CDG

Super calm and deliberate, staff are exceptionally down to detail

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 £644, 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 21% 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 £78). Flying from London Heathrow Airport to Saint-Denis in December is currently the most expensive (average of £1,444). 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air AustralCheapest£644Average£1,458FlexibilityNo cancel feeOn-time66%
Search Air Austral flights
Air FranceCheapest£830Average£1,260FlexibilityNo 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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