What are the cheapest airlines to fly from Key Largo to Saint Lucia one-way?

$248 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Caribbean Airlines and American Airlines, with prices starting from $271 and $304, respectively.

What are the cheapest flights from Key Largo to Saint Lucia?

While on average a flight from Key Largo to Saint Lucia is generally $918, our data shows the cheapest flight currently is $303. When looking at the most popular route, (Miami - Castries Hewanorra), you can expect to pay $497 for that flight.

What is the cheapest month to fly from Key Largo to Saint Lucia?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to Saint Lucia. Flights to Saint Lucia from Key Largo in January are about $622 on average during January, but can be found for as low as $458.

Can I find deals for flights from Key Largo to Saint Lucia that include hotel bookings?

Yes. In addition to deals on Key Largo to Saint Lucia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Key Largo to Saint Lucia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Saint Lucia.

Can I find deals for business class flights from Key Largo to Saint Lucia?

Yes. Cheapflights offers flight deals from Key Largo to Saint Lucia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$616+ Flights from Key Largo to Saint Lucia

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Cheap flight deals from Key Largo to Saint Lucia

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$513 (Vliegwinkel)
One-way from	$248 (Air Canada)
Popular in	December
Cheapest in	January
Average price	$641

Provider with most accurate pricing for Miami-Castries George F. L. Charle flight deals.

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Provider most trusted by Cheapflights users for Miami-Castries George F. L. Charle flights.

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From Key Largo to Saint Lucia

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One-way flight from Key Largo to Saint Lucia

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High demand for flights, 0% potential price rise

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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from Key Largo to Saint Lucia

Cheapest flights from Key Largo to Saint Lucia
Explore the most affordable flight options available from Key Largo to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

mer. 9/310:05 amMIA - UVF

Nonstop3h 38mAmerican Airlines

mer. 9/103:34 pmUVF - MIA

Nonstop3h 51mAmerican Airlines

Deal found 4/17

$483

mer. 9/36:00 amMIA - UVF

1 stop8h 15mDelta

mer. 9/103:38 pmUVF - MIA

1 stop9h 14mDelta

Deal found 4/17

$497

ven. 5/303:10 pmMIA - SLU

1 stop22h 00mCaribbean Airlines

dim. 6/812:30 pmSLU - MIA

1 stop24h 45mCaribbean Airlines

Deal found 4/16

$513

jeu. 7/39:40 pmMIA - UVF

1 stop16h 35mAir Canada

mar. 7/83:10 pmUVF - MIA

2 stops22h 01mAir Canada

Deal found 4/17

$606

lun. 8/187:00 pmMIA - UVF

1 stop18h 35mBritish Airways

sam. 8/233:43 pmUVF - MIA

Nonstop3h 42mBritish Airways

Deal found 4/16

$631

lun. 6/97:00 amMIA - UVF

2 stops31h 15mMultiple Airlines

dim. 6/152:35 pmUVF - MIA

2 stops32h 48mMultiple Airlines

Deal found 4/16

$636

mer. 5/148:53 amMIA - SLU

2 stops28h 17mMultiple Airlines

dim. 5/255:00 amSLU - MIA

1 stop8h 15mMultiple Airlines

Deal found 4/17

$652

ven. 4/257:00 amMIA - UVF

1 stop8h 45mJetBlue

mar. 4/291:12 pmUVF - MIA

1 stop10h 43mJetBlue

Deal found 4/15

$716

Best flights from Key Largo to Saint Lucia
Discover carefully curated flight deals from Key Largo to Saint Lucia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated avril 17, 2025.

ven. 5/303:10 pmMIA - SLU

1 stop22h 00mCaribbean Airlines

dim. 6/812:30 pmSLU - MIA

1 stop24h 45mCaribbean Airlines

Deal found 4/16

$513

mer. 7/95:10 amMIA - UVF

1 stop9h 05mAmerican Airlines

mer. 7/163:15 pmUVF - MIA

1 stop8h 13mAmerican Airlines

Deal found 4/17

$557

jeu. 7/39:40 pmMIA - UVF

1 stop16h 35mAir Canada

mar. 7/83:10 pmUVF - MIA

2 stops22h 01mAir Canada

Deal found 4/17

$606

mar. 6/105:30 amMIA - UVF

1 stop8h 46mDelta

mar. 6/173:36 pmUVF - MIA

1 stop9h 21mDelta

Deal found 4/17

$632

ven. 5/303:10 pmMIA - SLU

1 stop22h 00mMultiple Airlines

dim. 6/812:30 pmSLU - MIA

3 stops31h 28mMultiple Airlines

Deal found 4/16

$655

ven. 5/302:30 pmMIA - UVF

1 stop20h 35mJetBlue

dim. 6/83:08 pmUVF - MIA

1 stop21h 58mJetBlue

Deal found 4/17

$775

jeu. 7/33:10 pmMIA - UVF

2 stops28h 35mMultiple Airlines

mar. 7/83:10 pmUVF - MIA

2 stops22h 01mMultiple Airlines

Deal found 4/17

$687

Last-minute flights from Key Largo to Saint Lucia
Discover last-minute flight deals from Key Largo to Saint Lucia. Data last updated avril 17, 2025 and is based on user searches.

mer. 4/237:12 amMIA - UVF

1 stop7h 16mAmerican Airlines

mer. 4/302:45 pmUVF - MIA

Nonstop3h 50mAmerican Airlines

Deal found 4/16

$882

mer. 4/239:55 pmMIA - UVF

3 stops40h 50mMultiple Airlines

dim. 4/273:45 pmUVF - MIA

2 stops26h 18mMultiple Airlines

Deal found 4/16

$1,079

jeu. 4/2412:05 pmMIA - UVF

1 stop26h 40mAir Canada

dim. 4/273:45 pmUVF - MIA

1 stop21h 34mAir Canada

Deal found 4/16

$910

jeu. 4/243:10 pmMIA - SLU

1 stop20h 20mCaribbean Airlines

dim. 4/275:00 amSLU - MIA

1 stop8h 15mCaribbean Airlines

Deal found 4/16

$989

ven. 4/257:00 amMIA - UVF

1 stop8h 45mJetBlue

mar. 4/291:12 pmUVF - MIA

1 stop10h 43mJetBlue

Deal found 4/15

$716

ven. 4/256:00 amMIA - UVF

1 stop7h 59mDelta

mar. 4/293:19 pmUVF - MIA

1 stop9h 29mDelta

Deal found 4/16

$992

dim. 4/276:00 amMIA - SLU

2 stops33h 50mMultiple Airlines

dim. 5/45:00 amSLU - MIA

3 stops34h 25mMultiple Airlines

Deal found 4/17

$825

mer. 5/147:00 amMIA - UVF

1 stop7h 06mDelta

lun. 5/193:26 pmUVF - MIA

1 stop9h 11mDelta

Deal found 4/17

$642

mer. 5/148:53 amMIA - SLU

2 stops28h 17mMultiple Airlines

dim. 5/255:00 amSLU - MIA

1 stop8h 15mMultiple Airlines

Deal found 4/17

$652

lun. 5/192:18 pmMIA - UVF

1 stop23h 53mAmerican Airlines

ven. 5/233:14 pmUVF - MIA

1 stop29h 31mAmerican Airlines

Deal found 4/17

$636

jeu. 5/222:15 pmMIA - UVF

2 stops24h 00mAir Canada

mar. 5/273:10 pmUVF - MIA

2 stops22h 08mAir Canada

Deal found 4/17

$845

ven. 5/303:10 pmMIA - SLU

1 stop22h 00mCaribbean Airlines

dim. 6/812:30 pmSLU - MIA

1 stop24h 45mCaribbean Airlines

Deal found 4/16

$513

One-way flights from Key Largo to Saint Lucia
Search for one-way flight options from Key Largo to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated avril 17, 2025.

jeu. 6/199:40 pmMIA - UVF

1 stop16h 35mAir Canada

Deal found 4/16

$248

jeu. 6/193:10 pmMIA - SLU

1 stop20h 20mCaribbean Airlines

Deal found 4/16

$271

ven. 5/165:54 pmMIA - UVF

2 stops43h 51mMultiple Airlines

Deal found 4/17

$275

mar. 6/1710:00 amMIA - UVF

Nonstop3h 45mAmerican Airlines

Deal found 4/16

$304

mar. 5/137:00 amMIA - UVF

1 stop7h 06mDelta

Deal found 4/16

$308

jeu. 5/156:27 pmMIA - SLU

2 stops17h 03mMultiple Airlines

Deal found 4/15

$346

ven. 5/235:59 pmMIA - UVF

2 stops43h 46mWestJet

Deal found 4/16

$1,293

Cheapflights Fare Finder

Use the filters below to find and compare flights from Key Largo to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiCastries

MIA - SLU

MIASLU

Miami

ven. 5/30

3:10 pm-1:10 pm

1 stop22h 00m

Castries George F. L. Charle

dim. 6/8

12:30 pm-1:15 pm

1 stop24h 45m

$513

MiamiCastries

MIA - UVF

MIAUVF

Miami

mer. 7/9

5:10 am-2:15 pm

1 stop9h 05m

Castries Hewanorra

mer. 7/16

3:15 pm-12:33 am

1 stop9h 18m

$557

MiamiCastries

MIA - UVF

MIAUVF

Miami

jeu. 7/3

9:40 pm-2:15 pm

1 stop16h 35m

Castries Hewanorra

mar. 7/8

3:10 pm-1:11 pm

2 stops22h 01m

$606

MiamiCastries

MIA - UVF

MIAUVF

Miami

mar. 6/10

5:30 am-2:16 pm

1 stop8h 46m

Castries Hewanorra

mar. 6/17

3:36 pm-12:57 am

1 stop9h 21m

$632

MiamiCastries

MIA - UVF

MIAUVF

Miami

lun. 6/9

7:00 am-2:15 pm

2 stops31h 15m

Castries Hewanorra

dim. 6/15

2:35 pm-11:23 pm

2 stops32h 48m

$636

MiamiCastries

MIA - SLU

MIASLU

Miami

mer. 5/14

8:53 am-1:10 pm

2 stops28h 17m

Castries George F. L. Charle

dim. 5/25

5:00 am-1:15 pm

1 stop8h 15m

$652

MiamiCastries

MIA - UVF

MIAUVF

Miami

ven. 4/25

7:00 am-3:45 pm

1 stop8h 45m

Castries Hewanorra

mar. 4/29

1:12 pm-11:55 pm

1 stop10h 43m

$716

MiamiCastries

MIA - UVF

MIAUVF

Miami

jeu. 6/19

9:40 pm-2:15 pm

1 stop16h 35m

$248

MiamiCastries

MIA - SLU

MIASLU

Miami

jeu. 6/19

3:10 pm-11:30 am

1 stop20h 20m

$271

MiamiCastries

MIA - UVF

MIAUVF

Miami

ven. 5/16

5:54 pm-1:45 pm

2 stops43h 51m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 14 results

Best time to book a flight from Key Largo to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Key Largo with our price prediction graph.

Estimated round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from Key Largo to Saint Lucia

What is the cheapest month to book a flight from Key Largo to Saint Lucia?

Currently, January is the cheapest month in which you can book a flight from Key Largo to Saint Lucia (average of $556). Flying from Key Largo to Saint Lucia in December is currently the most expensive (average of $730). 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.

What is the cheapest time of day to fly from KE9 to LC?

When flying from Key Largo to Saint Lucia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Key Largo to Saint Lucia?

Travelers seeking maximum savings on their Key Largo to Saint Lucia flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Saint Lucia

To help decide which airline to fly from Key Largo to Saint Lucia, see what other customers have to say about Caribbean Airlines, Delta and JetBlue. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Caribbean Airlines

8.2

Very good

150 reviews

Reviews

1 / 9

6.0

Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

Caribbean Airlines

8.2

Very good

150 reviews

Caribbean Airlines

8.2

Very good

150 reviews

Reviews

1 / 9

6.0

Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

Delta

8.0

Very good

7,917 reviews

Caribbean Airlines

8.2

Very good

150 reviews

Reviews

1 / 9

6.0

Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

JetBlue

7.3

Good

2,926 reviews

Caribbean Airlines

8.2

Very good

150 reviews

Reviews

1 / 9

6.0

Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

American Airlines

7.2

Good

10,000 reviews

Caribbean Airlines

8.2

Very good

150 reviews

Reviews

1 / 9

6.0

Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

WestJet

7.2

Good

2,809 reviews

Caribbean Airlines

8.2

Very good

150 reviews

Reviews

1 / 9

6.0

Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

Related info for your journey

What are the cheapest airlines to fly from Key Largo to Saint Lucia one-way?
$248 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Caribbean Airlines and American Airlines, with prices starting from $271 and $304, respectively.
What are the cheapest flights from Key Largo to Saint Lucia?
While on average a flight from Key Largo to Saint Lucia is generally $918, our data shows the cheapest flight currently is $303. When looking at the most popular route, (Miami - Castries Hewanorra), you can expect to pay $497 for that flight.
Can I find deals for flights from Key Largo to Saint Lucia that include hotel bookings?
Yes. In addition to deals on Key Largo to Saint Lucia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Key Largo to Saint Lucia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Saint Lucia.
Can I find deals for business class flights from Key Largo to Saint Lucia?
Yes. Cheapflights offers flight deals from Key Largo to Saint Lucia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Key Largo to Saint Lucia?
Currently, January is the cheapest month in which you can book a flight from Key Largo to Saint Lucia (average of $556). Flying from Key Largo to Saint Lucia in December is currently the most expensive (average of $730). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Key Largo to Saint Lucia

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Top 3 airlines flying from Key Largo to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$393	Average$622	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$475	Average$725	FlexibilityNo cancel fee	On-timeN/A
Caribbean Airlines	Cheapest$554	Average$697	FlexibilityNo cancel fee	On-timeN/A

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$248+ Cheap flights from Key Largo, FL to Saint Lucia

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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Key Largo to Saint Lucia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Key Largo to Saint Lucia

Keep the following information in mind while searching for Key Largo to Saint Lucia flight deals. Data was last updated avril 17, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Key Largo to Saint Lucia

Cheapest flights from Key Largo to Saint LuciaExplore the most affordable flight options available from Key Largo to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

Explore the most affordable flight options available from Key Largo to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Key Largo to Saint Lucia that are best for you.

Best time to book a flight from Key Largo to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Key Largo with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Key Largo to Saint Lucia

What is the cheapest month to book a flight from Key Largo to Saint Lucia?

What is the cheapest time of day to fly from KE9 to LC?

Find hourly flight availability from Key Largo to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated avril 17, 2025.

What is the cheapest day to fly from Key Largo to Saint Lucia?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Saint Lucia. Price data was last updated on December 1, 2024.

Reviews of airlines servicing Saint Lucia

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Key Largo to Saint Lucia one-way?

What are the cheapest flights from Key Largo to Saint Lucia?

Can I find deals for flights from Key Largo to Saint Lucia that include hotel bookings?

How can I find direct flights from Key Largo to Saint Lucia?

Can I find deals for business class flights from Key Largo to Saint Lucia?

What is the cheapest month to book a flight from Key Largo to Saint Lucia?

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 Key Largo to Saint Lucia

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

Top 3 airlines flying from Key Largo to Saint Lucia

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Travel Smart

Cheapest flights from Key Largo to Saint Lucia
Explore the most affordable flight options available from Key Largo to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.