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 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.

£328+ Cheap Flights from Saint-Denis to London Heathrow Airport

Cheap flight deals from Saint-Denis to Heathrow

Enter your travel dates to find the best prices.

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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 9 October 2026.

Fri 9/1008:50 -

1 stop15h 35m

Tue 13/1006:15 -

2 stops31h 30m

Deal found 4/10£835

Mon 26/1012:40 -

2 stops35h 25m

Sun 8/1115:15 -

1 stop14h 40m

Deal found 4/10£844

Thu 22/1022:10 -

1 stop19h 05m

Tue 27/1020:50 -

2 stops28h 40m

Deal found 6/10£856

Thu 22/1010:40 -

1 stop24h 15m

Wed 28/1008:55 -

1 stop20h 15m

Deal found 6/10£875

Sat 26/1212:40 -

1 stop29h 45m

Sun 3/115:15 -

1 stop25h 45m

Deal found 8/10£905

Thu 22/1020:25 -

1 stop23h 10m

Wed 28/1008:55 -

2 stops20h 35m

Deal found 6/10£913

Find flight deals from Saint-Denis to Heathrow

Round-trip from	£627
One-way from	£328

8/3-14/3
2 total stops
35h 30m total
Saint-Denis to London

Search Deals

6/2-31/12
1 total stop
19h 25m total
Saint-Denis to London

Search Deals

Cheapflights Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Sat 6/2

23:00-14:25

1 stop19h 25m

London Heathrow

Wed 31/12

00:00-03:00

Nonstop0h 00m

£328

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Sat 6/2

22:00-14:25

1 stop20h 25m

London Heathrow

Sat 20/2

15:15-11:20

1 stop16h 05m

£778

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Mon 26/10

12:40-20:05

2 stops35h 25m

London Heathrow

Sun 8/11

15:15-09:55

1 stop14h 40m

£844

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Thu 22/10

10:40-07:55

1 stop24h 15m

London Heathrow

Wed 28/10

08:55-09:10

1 stop20h 15m

£875

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Sun 17/1

07:00-08:20

2 stops29h 20m

London Heathrow

Sun 24/1

06:00-10:50

2 stops24h 50m

£878

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Thu 22/10

19:55-07:55

1 stop15h 00m

London Heathrow

Tue 27/10

18:00-09:10

2 stops35h 10m

£941

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Sat 13/2

23:00-10:30

1 stop15h 30m

London Heathrow

Fri 26/2

17:35-09:10

1 stop35h 35m

£946

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Sat 6/2

20:40-07:55

1 stop15h 15m

London Heathrow

Sat 20/2

11:30-09:10

1 stop17h 40m

£1,008

Saint-DenisLondon

RUN Saint-Denis Gillot - LHR London Heathrow

RUNLHR

Saint-Denis Gillot

Sat 6/2

07:00-07:55

3 stops28h 55m

London Heathrow

Wed 31/12

00:00-03:00

Nonstop0h 00m

£3,144

Flights are sorted by cheapest return flights first.

Deals found on 5/10

Sorted by cheapest first

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.

RUN-LHR

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.

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

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Cheap flights from Saint-Denis to London Heathrow Airport from £328

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. 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

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 9 October 2026.

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 9 October 2026.

Best flights from Saint-Denis to HeathrowDiscover 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 9 October 2026.

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 9 October 2026.

Last-minute flights from Saint-Denis to HeathrowDiscover last-minute flight deals from Saint-Denis to Heathrow. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from Saint-Denis to Heathrow. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Saint-Denis to HeathrowSearch for one-way flight options from Saint-Denis to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Search for one-way flight options from Saint-Denis to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

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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

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?

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Saint-Denis to Heathrow

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Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Saint-Denis to Heathrow by cabin class

Find flights from Saint-Denis to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.

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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 9 October 2026.

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 9 October 2026.

Last-minute flights from Saint-Denis to Heathrow
Discover last-minute flight deals from Saint-Denis to Heathrow. Data last updated 9 October 2026 and is based on user searches.

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 9 October 2026.