Cheap flights from Saint Lucia to London Heathrow Airport from £506
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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Saint Lucia to Heathrow
Keep the following information in mind while searching for Saint Lucia to Heathrow flight deals. Data was last updated 14 June 2025.
Find flight deals from Saint Lucia to Heathrow
Cheapest flights from Saint Lucia to HeathrowExplore the most affordable flight options available from Saint Lucia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 June 2025.
Explore the most affordable flight options available from Saint Lucia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 June 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Saint Lucia 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 14 June 2025.
Use the filters below to find and compare flights from Saint Lucia to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
CastriesLondon
UVF - LHR
UVFLHR
Castries Hewanorra
Fri 5/9
15:10-11:50
1 stop15h 40m
London Heathrow
Thu 11/9
17:40-14:15
1 stop25h 35m
CastriesLondon
UVF - LHR
UVFLHR
Castries Hewanorra
Sun 30/11
16:35-12:05
1 stop15h 30m
London Heathrow
Wed 17/12
19:05-14:45
2 stops23h 40m
CastriesLondon
SLU - LHR
SLULHR
Castries George F. L. Charle
Thu 26/6
09:10-05:55
1 stop15h 45m
London Heathrow
Thu 3/7
11:00-19:00
1 stop13h 00m
CastriesLondon
UVF - LHR
UVFLHR
Castries Hewanorra
Mon 1/9
15:35-07:15
1 stop34h 40m
London Heathrow
Mon 22/9
06:20-14:15
2 stops36h 55m
CastriesLondon
UVF - LHR
UVFLHR
Castries Hewanorra
Mon 28/7
15:00-10:35
1 stop14h 35m
London Heathrow
Mon 4/8
16:20-14:00
2 stops26h 40m
CastriesLondon
UVF - LHR
UVFLHR
Castries Hewanorra
Sat 27/9
15:43-20:00
2 stops23h 17m
London Heathrow
Wed 8/10
16:05-14:17
2 stops27h 12m
CastriesLondon
UVF - LHR
UVFLHR
Castries Hewanorra
Sat 16/8
13:36-09:30
1 stop14h 54m
CastriesLondon
SLU - LHR
SLULHR
Castries George F. L. Charle
Mon 1/12
16:35-20:10
2 stops23h 35m
Best time to book a flight from Saint Lucia to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Saint Lucia with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Saint Lucia to London Heathrow Airport
What is the cheapest month to book a flight from Saint Lucia to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Saint Lucia to London Heathrow Airport (average of £112). Flying from Saint Lucia 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.
Rainfall in Heathrow by month
Plan your trip to Heathrow by taking into account the average rainfall totals by month.
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.
Temperature in Heathrow by month
Plan your trip to Heathrow by taking into account the average temperature totals by month.
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).
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 14 June 2025.
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from Saint Lucia to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Saint Lucia to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Saint Lucia to Heathrow
Discover the top 2 airlines that operate flights from Saint Lucia to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 June 2025.
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How does Cheapflights help users find flights from Saint Lucia to Heathrow?
Cheapflights makes it easy to find Saint Lucia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Saint Lucia to Heathrow?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Saint Lucia.
Can Cheapflights find flights from Saint Lucia to Heathrow with no change fees?
Need flexible booking options for your flight to Heathrow from Saint Lucia? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Saint Lucia to Heathrow become cheaper?
Yes! Start tracking prices for Saint Lucia to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.