Cheap flights from Saint Lucia to London from £340
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Saint Lucia to London departing on 14/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
CastriesLondon
UVF Castries Hewanorra - LHR London Heathrow
UVFLHR
Castries Hewanorra
Mon 2/11
17:32-09:30
1 stop35h 58m
London Heathrow
Sun 8/11
07:45-16:12
1 stop36h 27m
CastriesLondon
UVF Castries Hewanorra - LGW London Gatwick
UVFLGW
Castries Hewanorra
Wed 18/11
19:20-07:35
Nonstop8h 15m
London Gatwick
Wed 25/11
12:30-17:35
Nonstop9h 05m
CastriesLondon
UVF Castries Hewanorra - LGW London Gatwick
UVFLGW
Castries Hewanorra
Tue 17/11
19:20-07:35
Nonstop8h 15m
London Gatwick
Tue 24/11
12:30-17:35
Nonstop9h 05m
CastriesLondon
UVF Castries Hewanorra - LGW London Gatwick
UVFLGW
Castries Hewanorra
Wed 18/11
19:20-07:35
Nonstop8h 15m
London Gatwick
Wed 25/11
12:30-17:35
Nonstop9h 05m
CastriesLondon
UVF Castries Hewanorra - LGW London Gatwick
UVFLGW
Castries Hewanorra
Fri 13/11
20:05-08:20
Nonstop8h 15m
London Gatwick
Fri 20/11
13:15-18:20
Nonstop9h 05m
CastriesLondon
UVF Castries Hewanorra - LHR London Heathrow
UVFLHR
Castries Hewanorra
Fri 13/11
17:32-21:40
1 stop24h 08m
London Heathrow
Fri 20/11
09:20-12:49
1 stop31h 29m
CastriesLondon
UVF Castries Hewanorra - LHR London Heathrow
UVFLHR
Castries Hewanorra
Thu 5/11
17:32-09:30
1 stop35h 58m
London Heathrow
Tue 10/11
07:25-16:12
1 stop36h 47m
CastriesLondon
UVF Castries Hewanorra - LGW London Gatwick
UVFLGW
Castries Hewanorra
Thu 5/11
19:20-07:35
Nonstop8h 15m
London Gatwick
Tue 10/11
12:30-17:35
Nonstop9h 05m
CastriesLondon
UVF Castries Hewanorra - LHR London Heathrow
UVFLHR
Castries Hewanorra
Mon 2/11
17:35-21:00
2 stops23h 25m
London Heathrow
Sun 8/11
11:10-16:40
1 stop33h 30m
CastriesLondon
UVF Castries Hewanorra - LHR London Heathrow
UVFLHR
Castries Hewanorra
Mon 2/11
17:35-07:10
2 stops57h 35m
London Heathrow
Sun 8/11
06:00-16:40
2 stops38h 40m
See travel insights to London from
How to get the cheapest flight ticket from Saint Lucia to London
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London?
The cheapest month to fly to London from Saint Lucia is in September. Flight prices, which tend to average around £742, are often lower during this time because this is during the off-season. The month of May is another great option to travel to London, with average flight prices from Saint Lucia averaging around £796.
What is the cheapest Saint Lucia to London flight route?
Fly from Castries Hewanorra to London Gatwick for the best Saint Lucia - London flight prices
What cabin class options are available on Saint Lucia to London flights?
There are 3 cabin classes available to choose from on Saint Lucia to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Saint Lucia to London flights?
You could potentially save up to 45% on your flight if you consider stops on a Saint Lucia to London flight.
Cheap Saint Lucia to London flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Saint Lucia to London
Frequently asked questions about flying from Saint Lucia to London
When did momondo last update prices for flights from Saint Lucia to London?
Prices for flights from Saint Lucia to London are updated daily.
How many operators does momondo search for flights from Saint Lucia to London?
The number of operators available for flights from Saint Lucia to London is 1 as of October 2026.
How old do you have to be to fly from Saint Lucia to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Saint Lucia to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Saint Lucia to London?
Based on momondo bookings for flights between Saint Lucia and London, the leading plane model is Boeing 777, making up 100.00% of the total bookings.
Best airlines flying from Saint Lucia to London
Compare and see reviews for airlines that fly from Saint Lucia to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £718 | Free Cancellation | Rating 6.7 8,249 reviews |
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Saint Lucia to London?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Saint Lucia to London . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Saint Lucia to London with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to London from Saint Lucia with this policy.
How can momondo help me find flights from Saint Lucia to London?
Once all potential Saint Lucia to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Saint Lucia to London right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Saint Lucia to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.