What is the cheapest month to book a flight from Saint-Denis to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Saint-Denis to London Heathrow Airport (average of £112). Flying from Saint-Denis to London Heathrow Airport in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest month to fly from Saint-Denis to London Heathrow Airport?

Flights from Saint-Denis to London Heathrow Airport lean towards being more expensive in November. Prices are generally better when you fly from Saint-Denis to London Heathrow Airport in March, with the cheapest ticket starting at £527.

What is the cheapest time of day to fly from RUN to LHR?

When flying from Saint-Denis to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

£306+ Flights from Saint-Denis to London Heathrow Airport

Cheap flight deals from Saint-Denis to Heathrow

Round-trip from	£709
One-way from	£306
Popular in	November
Cheapest in	March
Average price	£940

5/10-7/2
2 total stops
46h 10m total
Saint-Denis to London

Search Deals

18/10
1 total stop
33h 15m total
Saint-Denis to London

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Highest demand for flights based on searches. 24% potential increase in price (£198 potential increase over avg. return price).

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Cheapest flight prices on average. 8% potential price decrease (£51 potential savings vs. average return price).

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Average for round-trip flights in September 2025

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Find flight deals from Saint-Denis to Heathrow

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 12 September 2025.

Sun 5/1019:55RUN - LHR

1 stop28h 30mMultiple Airlines

Sat 7/211:30LHR - RUN

1 stop17h 40mMultiple Airlines

Deal found 10/9£709

Thu 11/908:45RUN - LHR

1 stop15h 40mAir France

Mon 15/908:55LHR - RUN

2 stops22h 05mAir France

Deal found 10/9£721

Fri 19/922:10RUN - LHR

1 stop19h 05mMultiple Airlines

Tue 23/915:05LHR - RUN

1 stop14h 55mMultiple Airlines

Deal found 10/9£731

Fri 12/922:10RUN - LHR

1 stop19h 05mMultiple Airlines

Tue 16/915:05LHR - RUN

1 stop14h 55mMultiple Airlines

Deal found 11/9£736

Wed 24/1207:00RUN - LHR

2 stops16h 15mMultiple Airlines

Thu 1/109:00LHR - RUN

2 stops21h 50mMultiple Airlines

Deal found 11/9£783

Best flights from Saint-Denis to Heathrow
Discover carefully curated flight deals from Saint-Denis to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Sun 5/1019:55RUN - LHR

1 stop28h 30mMultiple Airlines

Sat 7/211:30LHR - RUN

1 stop17h 40mMultiple Airlines

Deal found 10/9£709

Wed 24/1207:00RUN - LHR

2 stops16h 15mMultiple Airlines

Thu 1/112:05LHR - RUN

2 stops18h 45mMultiple Airlines

Deal found 12/9£781

Sun 28/1223:00RUN - LHR

1 stop19h 25mMultiple Airlines

Sun 11/115:15LHR - RUN

1 stop25h 45mMultiple Airlines

Deal found 11/9£884

Mon 1/1223:00RUN - LHR

1 stop19h 25mMultiple Airlines

Mon 15/1209:55LHR - RUN

2 stops20h 00mMultiple Airlines

Deal found 10/9£961

Last-minute flights from Saint-Denis to Heathrow
Discover last-minute flight deals from Saint-Denis to Heathrow. Data last updated 12 September 2025 and is based on user searches.

Fri 19/922:10RUN - LHR

1 stop19h 05mMultiple Airlines

Tue 23/915:05LHR - RUN

1 stop14h 55mMultiple Airlines

Deal found 10/9£731

Fri 19/907:00RUN - LHR

2 stops28h 00mAir Mauritius

Tue 23/911:30LHR - RUN

2 stops20h 20mAir Mauritius

Deal found 10/9£1,157

One-way flights from Saint-Denis to Heathrow
Search for one-way flight options from Saint-Denis to Heathrow. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Sat 18/1008:00RUN - LHR

1 stop33h 15mMultiple Airlines

Deal found 10/9£306

Wed 15/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Deal found 10/9£328

Sun 5/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Deal found 10/9£350

Mon 6/1022:10RUN - LHR

2 stops19h 35mMultiple Airlines

Deal found 10/9£380

Sun 14/1223:00RUN - LHR

1 stop19h 25mMultiple Airlines

Deal found 10/9£401

Fri 17/1008:00RUN - LHR

3 stops28h 10mMultiple Airlines

Deal found 10/9£408

Wed 8/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Deal found 10/9£425

Mon 8/1217:25RUN - LHR

2 stops26h 05mMultiple Airlines

Deal found 11/9£433

Tue 7/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Deal found 10/9£443

Thu 16/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Deal found 10/9£449

Sun 12/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Deal found 10/9£489

Cheapflights Fare Finder

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

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 5/10

19:55-21:25

1 stop28h 30m

London Heathrow

Sat 7/2

11:30-09:10

1 stop17h 40m

£709

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Wed 24/12

07:00-19:15

2 stops16h 15m

London Heathrow

Thu 1/1

12:05-10:50

2 stops18h 45m

£781

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 28/12

23:00-14:25

1 stop19h 25m

London Heathrow

Sun 11/1

15:15-21:00

1 stop25h 45m

£884

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 1/12

23:00-14:25

1 stop19h 25m

London Heathrow

Mon 15/12

09:55-09:55

2 stops20h 00m

£961

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sat 18/10

08:00-14:15

1 stop33h 15m

£306

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Wed 15/10

22:10-14:15

1 stop19h 05m

£328

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sun 14/12

23:00-14:25

1 stop19h 25m

£401

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Fri 17/10

08:00-09:10

3 stops28h 10m

£408

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Mon 8/12

17:25-15:30

2 stops26h 05m

£433

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Tue 14/10

22:10-14:15

1 stop19h 05m

£443

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 13 results

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

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.
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.
What is the cheapest month to book a flight from Saint-Denis to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Saint-Denis to London Heathrow Airport (average of £112). Flying from Saint-Denis to London Heathrow Airport in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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?

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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?

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Cheap flights from Saint-Denis to London Heathrow Airport from £306

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Saint-Denis to Heathrow

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Find flight deals from Saint-Denis to Heathrow

Cheapest flights from Saint-Denis to HeathrowExplore 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 12 September 2025.

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 12 September 2025.

Cheapflights Fare Finder

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

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.

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?

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

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

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

What is the cheapest month to book a flight from Saint-Denis to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

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Alternative routes for Saint-Denis to Heathrow

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

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

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

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

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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 12 September 2025.