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Cheap flights from Saint-Denis to London Heathrow Airport from £340

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
RUN — LHR
13 Aug — 20 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Saint-Denis to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Saint-Denis to Heathrow
Explore the most affordable flight options available from Saint-Denis to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 July 2026.

Mon 19/1022:30
RUN
-
LHR
1 stop18h 45m
Multiple Airlines
Thu 3/1215:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 10/7£682
Mon 19/1022:30
RUN
-
LHR
1 stop18h 45m
Multiple Airlines
Tue 1/1215:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 10/7£695
Mon 19/1022:30
RUN
-
LHR
1 stop18h 45m
Multiple Airlines
Mon 7/1215:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 10/7£727
Mon 26/1021:30
RUN
-
LHR
1 stop20h 55m
Multiple Airlines
Tue 1/1215:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 10/7£742
Mon 19/1022:30
RUN
-
LHR
1 stop18h 45m
Multiple Airlines
Mon 30/1115:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 10/7£742
Tue 1/922:10
RUN
-
LHR
1 stop19h 05m
Multiple Airlines
Wed 9/915:00
LHR
-
RUN
1 stop15h 00m
Multiple Airlines
Deal found 11/7£891
Mon 3/800:15
RUN
-
LHR
1 stop19h 20m
Air France
Tue 18/819:45
LHR
-
RUN
1 stop23h 10m
Air France
Deal found 12/7£940

Find flight deals from Saint-Denis to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Saint-Denis (RUN) to Heathrow (LHR). 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 14 July 2026.

Round-trip from

£682

One-way from

£340
19/10-3/12
  • 19/10-3/12
  • 2 total stops
  • 34h 50m total
  • Saint-Denis to London
Search Deals
25/8
  • 25/8
  • 1 total stop
  • 33h 15m total
  • Saint-Denis to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Saint-Denis to Heathrow 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 14 July 2026.
Use the filters below to find and compare flights from Saint-Denis to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 26/10

21:30-14:25

1 stop20h 55m

London Heathrow

Tue 1/12

15:15-11:20

1 stop16h 05m

£742

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 19/10

22:30-14:15

1 stop18h 45m

London Heathrow

Tue 1/12

09:55-11:20

2 stops21h 25m

£777
Fastest return journey

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Tue 1/9

22:10-14:15

1 stop19h 05m

London Heathrow

Wed 9/9

15:00-09:00

1 stop15h 00m

£891

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 19/10

08:50-07:40

2 stops25h 50m

London Heathrow

Thu 3/12

19:20-13:20

1 stop14h 00m

£916

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 3/8

00:15-16:35

1 stop19h 20m

London Heathrow

Tue 18/8

19:45-21:55

1 stop23h 10m

£940

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 29/11

23:00-14:25

1 stop19h 25m

London Heathrow

Mon 30/11

17:35-13:20

1 stop15h 45m

£1,125

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 1/11

23:00-14:25

1 stop19h 25m

London Heathrow

Sun 13/12

15:15-09:55

1 stop14h 40m

£1,169

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sat 1/8

00:15-18:35

1 stop21h 20m

London Heathrow

Sun 16/8

19:45-21:55

1 stop23h 10m

£1,196

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 2/8

15:50-07:55

3 stops43h 05m

London Heathrow

Sun 16/8

17:35-11:55

1 stop15h 20m

£2,019

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 2/8

15:50-07:55

3 stops43h 05m

London Heathrow

Fri 14/8

17:35-08:10

1 stop35h 35m

£2,507

Flights are sorted by cheapest return flights first.

Deals found on 12/7

Showing 1-10 of 15 resultsSorted by cheapest first
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Best time to book a flight from Saint-Denis to Heathrow

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

Related info for your journey

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

    Located just 3.9 mi from the city center, Saint-Denis Gillot is the airport most travelers will use when flying to London Heathrow from Saint-Denis. Booking flights from Gillot (RUN) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 0 different airlines.

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

    Departing from Saint-Denis to London Heathrow Airport will take you 19h 20m. Airlines will cover a distance of 6029 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Saint-Denis to Heathrow 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Watford
Eastbourne
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Saint-Denis to Heathrow

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

When you search for this flight from Saint-Denis to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Saint-Denis to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Saint-Denis to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Saint-Denis to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Saint-Denis to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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