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.

£646+ Flights from Saint-Denis to London Heathrow Airport

Find 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 13 October 2025.

Fri 7/1121:30RUN - LHR

1 stop20h 55mMultiple Airlines

Sat 15/1115:15LHR - RUN

1 stop16h 05mMultiple Airlines

Deal found 12/10£646

Sat 8/1111:40RUN - LHR

1 stop23h 55mMultiple Airlines

Sat 15/1117:20LHR - RUN

1 stop15h 20mMultiple Airlines

Deal found 11/10£658

Thu 16/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Mon 20/1020:50LHR - RUN

2 stops33h 10mMultiple Airlines

Deal found 12/10£774

Tue 23/1208:30RUN - LHR

2 stops28h 40mMultiple Airlines

Thu 1/115:15LHR - RUN

1 stop14h 40mMultiple Airlines

Deal found 12/10£808

Thu 16/1021:00RUN - LHR

1 stop27h 25mAir France

Mon 20/1006:15LHR - RUN

1 stop21h 15mAir France

Deal found 12/10£928

Wed 24/1215:30RUN - LHR

3 stops23h 15mMultiple Airlines

Thu 1/109:00LHR - RUN

2 stops21h 50mMultiple Airlines

Deal found 12/10£939

Sun 12/1010:40RUN - LHR

1 stop34h 55mMultiple Airlines

Fri 17/1006:15LHR - RUN

1 stop22h 55mMultiple Airlines

Deal found 11/10£992

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 13 October 2025.

Fri 7/1121:30RUN - LHR

1 stop20h 55mMultiple Airlines

Sat 15/1115:15LHR - RUN

1 stop16h 05mMultiple Airlines

Deal found 12/10£646

Thu 19/320:40RUN - LHR

1 stop15h 20mAir Austral

Mon 23/311:30LHR - RUN

1 stop17h 40mAir Austral

Deal found 11/10£981

Sat 8/1111:40RUN - LHR

1 stop23h 55mMultiple Airlines

Sat 15/1117:20LHR - RUN

1 stop15h 20mMultiple Airlines

Deal found 11/10£658

Tue 23/1208:30RUN - LHR

2 stops28h 40mMultiple Airlines

Thu 1/115:15LHR - RUN

1 stop14h 40mMultiple Airlines

Deal found 12/10£808

Wed 24/1215:30RUN - LHR

3 stops23h 15mMultiple Airlines

Thu 1/109:00LHR - RUN

2 stops21h 50mMultiple Airlines

Deal found 12/10£939

Last-minute flights from Saint-Denis to Heathrow
Discover last-minute flight deals from Saint-Denis to Heathrow. Data last updated 13 October 2025 and is based on user searches.

Sun 12/1010:40RUN - LHR

1 stop34h 55mMultiple Airlines

Fri 17/1006:15LHR - RUN

1 stop22h 55mMultiple Airlines

Deal found 11/10£992

Mon 13/1010:40RUN - LHR

1 stop24h 20mMultiple Airlines

Sun 19/1008:55LHR - RUN

2 stops21h 05mMultiple Airlines

Deal found 12/10£1,015

Thu 16/1022:10RUN - LHR

1 stop19h 05mMultiple Airlines

Mon 20/1020:50LHR - RUN

2 stops33h 10mMultiple Airlines

Deal found 12/10£774

Thu 16/1021:00RUN - LHR

1 stop27h 25mAir France

Mon 20/1006:15LHR - RUN

1 stop21h 15mAir France

Deal found 12/10£928

Fri 7/1121:30RUN - LHR

1 stop20h 55mMultiple Airlines

Sat 15/1115:15LHR - RUN

1 stop16h 05mMultiple Airlines

Deal found 12/10£646

Sat 8/1111:40RUN - LHR

1 stop23h 55mMultiple Airlines

Sat 15/1117:20LHR - RUN

1 stop15h 20mMultiple Airlines

Deal found 11/10£658

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 13 October 2025.

Thu 6/1117:25RUN - LHR

3 stops46h 55mMultiple Airlines

Deal found 12/10£1,215

Tue 28/1007:00RUN - LHR

3 stops38h 20mMultiple Airlines

Deal found 13/10£1,317

Wed 29/1013:15RUN - LHR

3 stops27h 00mMultiple Airlines

Deal found 13/10£1,492

Thu 30/1006:55RUN - LHR

3 stops36h 35mMultiple Airlines

Deal found 13/10£1,539

Cheap flight deals from Saint-Denis to Heathrow

Round-trip from	£646
Popular in	November
Cheapest in	March
Average price	£726

7/11-15/11
2 total stops
37h 00m total
Saint-Denis to London

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£184 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 9% potential price decrease (£55 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

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.

Fly from

Fly to

Route

Depart

Return

Price

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Fri 7/11

21:30-14:25

1 stop20h 55m

London Heathrow

Sat 15/11

15:15-11:20

1 stop16h 05m

£646

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Sat 8/11

11:40-07:35

1 stop23h 55m

London Heathrow

Sat 15/11

17:20-12:40

1 stop15h 20m

£658

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Tue 23/12

08:30-09:10

2 stops28h 40m

London Heathrow

Thu 1/1

15:15-09:55

1 stop14h 40m

£808

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Wed 24/12

15:30-10:45

3 stops23h 15m

London Heathrow

Thu 1/1

09:00-10:50

2 stops21h 50m

£939

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Thu 19/3

20:40-08:00

1 stop15h 20m

London Heathrow

Mon 23/3

11:30-09:10

1 stop17h 40m

£981

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Thu 6/11

17:25-12:20

3 stops46h 55m

£1,215

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Tue 28/10

07:00-17:20

3 stops38h 20m

£1,317

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Wed 29/10

13:15-12:15

3 stops27h 00m

£1,492

Saint-DenisLondon

RUN - LHR

RUNLHR

Saint-Denis Gillot

Thu 30/10

06:55-15:30

3 stops36h 35m

£1,539

Flights are sorted by cheapest return flights first.

Deals found on 12/10

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.

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

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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 £646

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

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 13 October 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 13 October 2025.

Cheap flight deals from Saint-Denis to Heathrow

Round-trip from

Popular in

Cheapest in

Average price

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?

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Saint-Denis to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

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?

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 13 October 2025.