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Cheap flights from Saint-Denis to London from £642

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
RUN — LON
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from Saint-Denis to London
Explore the most affordable flight options available from Saint-Denis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2025.

Wed 24/1215:30RUN - LHR
3 stops21h 15mMultiple Airlines
Thu 1/109:05LHR - RUN
2 stops21h 45mMultiple Airlines
Deal found 3/11£959
Wed 24/1210:40RUN - LHR
1 stop14h 45mAir France
Thu 1/109:00LHR - RUN
1 stop19h 20mAir France
Deal found 4/11£1,313

Cheap flight deals from Saint-Denis to London

Discover tips and strategies to find the most affordable flight options for your journey from Saint-Denis (RUN) to London (LON). 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 5 November 2025.

Round-trip from

£786

One-way from

£642

Popular in

November

Cheapest in

March

Average price

£1,311
7/1-20/1
  • 7/1-20/1
  • 6 total stops
  • 46h 20m total
  • Saint-Denis to London
Search Deals
8/1
  • 8/1
  • 2 total stops
  • 24h 35m total
  • Saint-Denis to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£141 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£38 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Saint-Denis to London 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 5 November 2025.
Use the filters below to find and compare flights from Saint-Denis to London that are best for you.

Fly from

Saint-Denis

Fly to

London

Route

Depart

Return

Price

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Wed 7/1

14:05-09:45

3 stops23h 40m

London Heathrow

Tue 20/1

13:30-16:10

3 stops22h 40m

£786

Saint-DenisLondon

RUN - LCY

RUNLCY

Saint-Denis Gillot

Wed 7/1

14:05-09:05

3 stops23h 00m

London City

Tue 20/1

18:15-16:10

3 stops17h 55m

£824

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Wed 24/12

15:30-08:45

3 stops21h 15m

London Heathrow

Thu 1/1

09:05-10:50

2 stops21h 45m

£959

Saint-DenisLondon

RUN - LGW

RUNLGW

Saint-Denis Gillot

Wed 7/1

12:05-06:40

2 stops22h 35m

London Gatwick

Tue 20/1

09:40-10:50

2 stops21h 10m

£1,192

Saint-DenisLondon

RUN - LGW

RUNLGW

Saint-Denis Gillot

Tue 6/1

14:05-06:40

2 stops20h 35m

London Gatwick

Sun 18/1

13:35-10:50

2 stops17h 15m

£1,198

Saint-DenisLondon

RUN - STN

RUNSTN

Saint-Denis Gillot

Fri 2/1

12:05-17:55

2 stops33h 50m

London Stansted

Fri 9/1

18:55-09:55

2 stops35h 00m

£1,202

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Fri 2/1

12:05-11:40

2 stops27h 35m

London Heathrow

Fri 9/1

09:00-09:10

1 stop20h 10m

£1,265

Saint-DenisLondon

RUN - STN

RUNSTN

Saint-Denis Gillot

Tue 6/1

14:05-11:45

3 stops25h 40m

London Stansted

Sun 18/1

08:30-09:55

2 stops21h 25m

£1,267

Saint-DenisLondon

RUN - LGW

RUNLGW

Saint-Denis Gillot

Fri 2/1

10:40-07:30

1 stop24h 50m

London Gatwick

Fri 9/1

13:50-08:20

1 stop14h 30m

£1,576

Saint-DenisLondon

RUN - STN

RUNSTN

Saint-Denis Gillot

Fri 24/4

12:05-12:55

2 stops27h 50m

London Stansted

Sat 9/5

21:10-10:50

2 stops34h 40m

£3,620

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 18 results
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Best time to book a flight from Saint-Denis to London

Have a flexible travel schedule? Discover the best time to fly to London 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.

Cheapflights Insights

Everything you need to know about your flight from Saint-Denis to London
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Related info for your journey

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

    Saint-Denis Gillot (RUN), located 3.9 mi from the city center, is the airport you fly out of when you book flights from Saint-Denis to London. 0 airlines have flights from Gillot to London on a regular basis. Booking flights from Saint-Denis Gillot to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

  • What are the most popular routes from Saint-Denis to London?

    While some choose either Saint-Denis Gillot - London Heathrow or Saint-Denis Gillot - London Stansted, Saint-Denis Gillot - London Gatwick is the most popular route from Saint-Denis to London.

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

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

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

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

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

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

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

Fly with Cheapflights

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

Deals for Saint-Denis to London 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.

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Can Cheapflights find flights from Saint-Denis to London 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 London, 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 London become cheaper?

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