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Cheap flights from Saint-Denis to London Heathrow Airport from £250

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.
RUN — LHR
27 Feb — 6 Mar1
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 28 January 2026.

Thu 12/321:30
RUN
-
LHR
1 stop20h 55m
Multiple Airlines
Thu 19/315:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 26/1£495
Sat 14/322:00
RUN
-
LHR
1 stop20h 25m
Multiple Airlines
Sat 21/315:15
LHR
-
RUN
1 stop16h 05m
Multiple Airlines
Deal found 28/1£553
Thu 29/123:00
RUN
-
LHR
1 stop26h 25m
Multiple Airlines
Mon 2/206:20
LHR
-
RUN
1 stop23h 35m
Multiple Airlines
Deal found 26/1£580
Thu 29/110:40
RUN
-
LHR
1 stop33h 55m
Air France
Mon 2/206:20
LHR
-
RUN
1 stop21h 00m
Air France
Deal found 26/1£653
Sat 14/310:40
RUN
-
LHR
2 stops28h 05m
KLM
Sat 21/317:50
LHR
-
RUN
2 stops34h 30m
KLM
Deal found 28/1£797
Thu 29/121:45
RUN
-
LHR
2 stops37h 55m
KLM
Mon 2/206:30
LHR
-
RUN
2 stops20h 50m
KLM
Deal found 26/1£815
Wed 7/1021:30
RUN
-
LHR
1 stop19h 45m
Multiple Airlines
Fri 23/1015:00
LHR
-
RUN
1 stop16h 30m
Multiple Airlines
Deal found 26/1£835

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 28 January 2026.

Round-trip from

£495

One-way from

£250

Popular in

December

Cheapest in

November

Average price

£558
12/3-19/3
  • 12/3-19/3
  • 2 total stops
  • 37h 00m total
  • Saint-Denis to London
Search Deals
22/6
  • 22/6
  • 1 total stop
  • 19h 45m total
  • Saint-Denis to London
Search Deals
High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 7% potential price decrease (£38 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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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 28 January 2026.
Use the filters below to find and compare flights from Saint-Denis to London Heathrow Airport that are best for you.

Fly from

Saint-Denis

Fly to

Heathrow

Route

Depart

Return

Price

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Thu 12/3

21:30-14:25

1 stop20h 55m

London Heathrow

Thu 19/3

15:15-11:20

1 stop16h 05m

£495

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sat 14/3

22:00-14:25

1 stop20h 25m

London Heathrow

Sat 21/3

15:15-11:20

1 stop16h 05m

£553

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sat 14/3

10:40-10:45

2 stops28h 05m

London Heathrow

Sat 21/3

17:50-08:20

2 stops34h 30m

£797

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Fri 10/7

18:00-18:40

2 stops27h 40m

London Heathrow

Fri 7/8

09:05-16:45

2 stops28h 40m

£1,053

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Thu 9/7

00:15-08:00

1 stop34h 45m

London Heathrow

Fri 7/8

19:45-21:55

1 stop23h 10m

£1,191

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 22/6

21:30-14:15

1 stop19h 45m

£250

Flights are sorted by cheapest return flights first.

Deals found on 27/1

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 28h 05m. 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
Milton Keynes
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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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

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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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