The cheapest times to fly from SLU to STN are

  • May 14th to May 27th
  • October 8th to October 28th
  • December 24th to April 1st (except the weeks of January 1st and February 5th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SLU to STN is late February and early March. Prices can be as high as $6842 for Thursday flights during mid June, or as low as $1295 for Monday flights around late February and early March.


When to Fly to London

Flying from St. Lucia (SLU) to London (STN) will usually cost between $1386 to $6548 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late February and early March with an average ticket price of $1349. Due to high demand the most expensive time to fly is mid June, with an average price of $6096. Planning your trip to low-cost times can easily save you $4747 on economy flights and even more on first-class flights. Generally, any price below $4990 can be considered a good price for a round-trip SLU to STN flight.

See below for a graph of average weekly prices for the SLU to STN route. All prices are for round-trip tickets in USD.

SLU to STN Flight Prices

Compared to other flights, the SLU to STN flight is more expensive than the average and costs more than the average flight leaving from Saint Lucia. The average price per mile (for a direct flight) is $0.73, which is above average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to depart and return on this flight. Thursdays are the most expensive days to fly to London, and Sundays are the most expensive days to return to Saint Lucia. Selecting flights on the least expensive days could save you up to $1540 (28%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $3441. Return trip prices are from the STN to SLU flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SLU to STN can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 8 hour 37 minutes may be realistic.


Flight Hacking SLU to STN

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SLU to STN — but Champion Traveler does!

Hack #1: Miami, FL (SLU > MIA > STN)

  • Price for both tickets: $1479
  • Average savings: $3511 (70.36%)

See SLU to EWR flights

Hack #2: Newark, NJ (SLU > EWR > STN)

  • Price for both tickets: $1491
  • Average savings: $3500 (70.13%)

See SLU to MIA flights

Hack #3: Fort Lauderdale, FL (SLU > FLL > STN)

  • Price for both tickets: $1497
  • Average savings: $3493 (70%)

See SLU to FLL flights


Flight Questions Answered

Still have questions about flying from SLU to STN? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Air Canada, Caribbean Airlines, Eurowings, LIAT, Lufthansa, SAS, United, and potentially more during busy seasons.

How far away is it from London Stansted Airport to George F Charles Airport?

The distance between the two airports is roughly 4241 miles or 6825 kilometers.

How long does it take to fly from SLU to STN?

The real-world flight time for a nonstop SLU to STN flight is about 8 hour 37 minutes.

How many flights go between St. Lucia and London?

It depends on the day of the week and the date, but a typical day might have around 2 available flights from SLU to STN.


Airport Location Info


Departing Airport

Origination codeSLU
Origination airport nameGeorge F Charles Airport
CitySt. Lucia
CountrySt Lucia

Return Airport

Destination codeSTN
Destination airport nameLondon Stansted Airport
Countrythe United Kingdom


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.