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Cheap flights from London Heathrow Airport to Saint-Denis from £342

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — RUN
20 Apr — 27 Apr1
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 21 March 2026.

Tue 15/915:00
LHR
-
RUN
1 stop15h 00m
Multiple Airlines
Tue 6/1022:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 20/3£723
Fri 11/915:00
LHR
-
RUN
1 stop15h 00m
Multiple Airlines
Sun 20/922:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£735
Mon 8/615:00
LHR
-
RUN
1 stop15h 00m
Multiple Airlines
Fri 19/612:20
RUN
-
LHR
1 stop28h 55m
Multiple Airlines
Deal found 17/3£754
Mon 23/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Mon 30/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£758
Mon 23/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Tue 31/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£764
Sat 21/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Mon 30/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£779
Tue 17/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Mon 30/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£781
Thu 19/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Mon 30/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£783
Sat 21/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Tue 31/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£785
Tue 17/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Tue 31/322:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£787
Mon 23/315:15
LHR
-
RUN
1 stop14h 40m
Multiple Airlines
Wed 1/422:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Deal found 17/3£788

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 21 March 2026.

Round-trip from

£723

One-way from

£342

Popular in

October

Cheapest in

August

Average price

£416
15/9-6/10
  • 15/9-6/10
  • 2 total stops
  • 34h 05m total
  • London to Saint-Denis
Search Deals
2/9
  • 2/9
  • 1 total stop
  • 22h 25m total
  • London to Saint-Denis
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£212 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£51 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 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 21 March 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 1/5

15:00-20:10

1 stop26h 10m

Saint-Denis Gillot

Wed 20/5

22:10-14:15

1 stop19h 05m

£876

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Thu 30/4

14:25-13:15

2 stops19h 50m

Saint-Denis Gillot

Thu 7/5

13:35-12:25

2 stops25h 50m

£920

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Wed 3/6

08:55-09:30

2 stops21h 35m

Saint-Denis Gillot

Sun 7/6

07:00-10:30

2 stops30h 30m

£942

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Wed 1/7

22:15-22:50

2 stops21h 35m

Saint-Denis Gillot

Wed 8/7

18:00-14:25

2 stops23h 25m

£947

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sun 3/5

11:30-12:20

1 stop21h 50m

Saint-Denis Gillot

Sun 10/5

08:50-07:55

1 stop26h 05m

£953
Fastest return journey

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sat 2/5

17:35-11:55

1 stop15h 20m

Saint-Denis Gillot

Sat 9/5

23:00-13:45

1 stop17h 45m

£968

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sat 2/5

14:25-16:45

2 stops23h 20m

Saint-Denis Gillot

Sun 17/5

17:25-16:10

2 stops25h 45m

£977

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sun 3/5

14:45-12:20

2 stops18h 35m

Saint-Denis Gillot

Sun 10/5

08:50-07:55

1 stop26h 05m

£1,018

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Sat 2/5

15:00-09:00

1 stop15h 00m

Saint-Denis Gillot

Sun 10/5

22:10-14:15

1 stop19h 05m

£1,033
Cheapest one-way
Fastest single journey

LondonSaint-Denis

LHR - RUN

LHRRUN

London Heathrow

Wed 2/9

06:45-08:10

1 stop22h 25m

£342

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 13 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.

Cheapflights Insights

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

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 21 March 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
1,547 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

7.0

Boarding

7.4

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Air France
7.4
Good
1,547 reviews
Air France
7.4
Good
1,547 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

7.0

Boarding

7.4

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class

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.

  • How long is the flight from London Heathrow Airport to Saint-Denis?

    Departing from London Heathrow Airport to Saint-Denis will take you 21h 35m. There are 6029 mi between London Heathrow Airport and Saint-Denis.

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

    Air France, at £405, 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 53% 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

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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 21 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£405Average£1,055FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air AustralCheapest£645Average£1,460FlexibilityNo 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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