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Cheap flights from London Heathrow Airport to Saint-Denis from £369

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 22/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RUN
29 May — 5 Jun1
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 29 April 2026.

Fri 11/915:00
LHR
-
RUN
1 stop35h 35m
Multiple Airlines
Mon 21/922:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 24/4£721
Mon 16/1115:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Tue 24/1122:00
RUN
-
LHR
1 stop20h 25m
Multiple Airlines
Deal found 25/4£750
Mon 1/615:00
LHR
-
RUN
1 stop16h 30m
Multiple Airlines
Wed 17/621:30
RUN
-
LHR
1 stop19h 45m
Multiple Airlines
Deal found 28/4£776
Mon 8/620:50
LHR
-
RUN
2 stops33h 10m
Multiple Airlines
Mon 15/622:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 24/4£782
Mon 1/615:00
LHR
-
RUN
1 stop16h 30m
Multiple Airlines
Tue 16/621:30
RUN
-
LHR
1 stop19h 45m
Multiple Airlines
Deal found 28/4£784
Tue 9/615:00
LHR
-
RUN
1 stop15h 00m
Multiple Airlines
Tue 16/622:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 28/4£797
Thu 11/615:00
LHR
-
RUN
1 stop35h 35m
Multiple Airlines
Thu 18/622:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 27/4£798
Mon 24/806:15
LHR
-
RUN
1 stop26h 40m
Multiple Airlines
Mon 14/919:55
RUN
-
LHR
1 stop25h 40m
Multiple Airlines
Deal found 25/4£801

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 29 April 2026.

Round-trip from

£721

One-way from

£369

Popular in

October

Cheapest in

August

Average price

£843
11/9-21/9
  • 11/9-21/9
  • 2 total stops
  • 54h 40m total
  • London to Saint-Denis
Search Deals
22/6
  • 22/6
  • 1 total stop
  • 35h 35m total
  • London to Saint-Denis
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£223 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 April 2026
Search Deals

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 29 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Saint-Denis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Fri 11/9

15:00-05:35

1 stop35h 35m

Saint-Denis Gillot

Mon 21/9

22:10-14:15

1 stop19h 05m

£721

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Mon 8/6

20:50-09:00

2 stops33h 10m

Saint-Denis Gillot

Mon 15/6

22:10-14:15

1 stop19h 05m

£782
Fastest return journey

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Mon 1/6

15:00-10:30

1 stop16h 30m

Saint-Denis Gillot

Tue 16/6

21:30-14:15

1 stop19h 45m

£784

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Mon 8/6

15:00-09:00

1 stop15h 00m

Saint-Denis Gillot

Sun 21/6

12:05-16:15

2 stops31h 10m

£878

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Mon 1/6

15:00-09:00

1 stop15h 00m

Saint-Denis Gillot

Wed 17/6

22:10-20:05

2 stops24h 55m

£905

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sat 13/6

15:00-09:00

1 stop15h 00m

Saint-Denis Gillot

Sat 20/6

08:00-09:45

2 stops28h 45m

£910

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 11/6

22:15-22:50

2 stops21h 35m

Saint-Denis Gillot

Thu 18/6

18:05-18:40

2 stops27h 35m

£922
Cheapest one-way

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Mon 22/6

15:00-05:35

1 stop35h 35m

£369

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sat 8/8

14:25-12:20

2 stops18h 55m

£674

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Fri 7/8

14:25-16:45

2 stops23h 20m

£674

Flights are sorted by cheapest return flights first.

Deals found on 25/4

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

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.

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 29 April 2026.
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
1,580 reviews
Check prices

Boarding

7.5

Crew

8.1

Entertainment

7.0

Overall

7.4

Comfort

7.4

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Carolina,Apr 2026

CDG - BOG

The aircraft is old, uncomfortable, the seat so narrow you don’t even notice you are in business class. The food is the same they are offering since -at least- 2022. The liquors are so limited. So disappointed.
Air France
7.4
Good
1,580 reviews
Air France
7.4
Good
1,580 reviews
Check prices

Boarding

7.5

Crew

8.1

Entertainment

7.0

Overall

7.4

Comfort

7.4

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Carolina,Apr 2026

CDG - BOG

The aircraft is old, uncomfortable, the seat so narrow you don’t even notice you are in business class. The food is the same they are offering since -at least- 2022. The liquors are so limited. So disappointed.

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 France, at £401, was found to be the cheapest airline from London Heathrow Airport to Saint-Denis. An alternate airline flying to your destination would be Air Austral. These flights start at 54% 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.

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 29 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£401Average£964FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air AustralCheapest£1,004Average£1,445FlexibilityNo cancel feeOn-time66%
Search Air Austral 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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