The cheapest times to fly from MCI to SLU are

  • January 8th to February 11th
  • May 28th to June 24th
  • August 20th to December 16th

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 MCI to SLU is early November. Prices can be as high as $2111 for Wednesday flights during mid July, or as low as $750 for Monday flights around early November.


When to Fly to Saint Lucia

Flying from Kansas City, MO (MCI) to St. Lucia (SLU) will usually cost between $833 to $1396 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early November with an average ticket price of $855. Due to high demand the most expensive time to fly is mid July, with an average price of $1697. Planning your trip to low-cost times can easily save you $842 on economy flights and even more on first-class flights. Generally, any price below $963 can be considered a good price for a round-trip MCI to SLU flight.

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

MCI to SLU Flight Prices

Compared to other flights, the MCI to SLU flight is priced close to the average and costs about as much as the average flight leaving from Kansas City. The average price per mile (for a direct flight) is $0.22, which is below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to SLU, and Tuesday the cheapest day to fly back into MCI. Wednesdays are the most expensive days to fly to Saint Lucia, and Saturdays are the most expensive days to return to Kansas City. Selecting flights on the least expensive days could save you up to $92 (8%) 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 $1000. Return trip prices are from the SLU to MCI 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 MCI to SLU can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 49 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from MCI to SLU while comparing.

Destination alternative #1: Grantley Adams International Airport (BGI) in Barbados/Bridgetown

  • 120 miles (193 km) away from SLU
  • Usually 25.44% less expensive than SLU
  • 1-layover flights available

See MCI to BGI flights

Destination alternative #2: Maurice Bishop International Airport (GND) in Grenada

  • 149 miles (240 km) away from SLU
  • Usually 24.77% less expensive than SLU
  • 1-layover flights available

See MCI to GND flights

Destination alternative #3: Hewanorra International Airport (UVF) in St. Lucia

  • 20 miles (32 km) away from SLU
  • Usually 10.80% less expensive than SLU
  • 1-layover flights available

See MCI to UVF flights


Flight Hacking MCI to SLU

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 MCI to SLU — but Champion Traveler does!

Hack #1: Port of Spain (MCI > POS > SLU)

  • Price for both tickets: $918
  • Average savings: $46 (4.72%)

See MCI to POS flights

Hack #2: Fort Lauderdale, FL (MCI > FLL > SLU)

  • Price for both tickets: $926
  • Average savings: $37 (3.84%)

See MCI to FLL flights

Hack #3: Miami, FL (MCI > MIA > SLU)

  • Price for both tickets: $949
  • Average savings: $15 (1.51%)

See MCI to MIA flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Air Canada, Air France, Caribbean Airlines, Delta, LIAT, United, and potentially more during busy seasons.

How far away is it from George F Charles Airport to Kansas City International Airport?

The distance between the two airports is roughly 2689 miles or 4328 kilometers.

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

The real-world flight time for a nonstop MCI to SLU flight is about 5 hour 49 minutes.

How many flights go between Kansas City, MO and St. Lucia?

It depends on the day of the week and the date, but a typical day might have around 32 available flights from MCI to SLU.


Airport Location Info


Departing Airport

Origination codeMCI
Origination airport nameKansas City International Airport
CityKansas City, MO
Countrythe United States

Return Airport

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


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.