Key Largo

$113+ Cheap flights from Las Vegas (LAS) to Key Largo, FL

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — MIA
Feb 28 — Mar 71
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Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Key Largo are usually found in August or June, booked 32 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Las Vegas to Key Largo

Cheapest flights from Las Vegas to Key Largo
Explore the most affordable flight options available from Las Vegas to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:56 pm
LAS
-
MIA
1 stop10h 33m
Frontier
Wed 4/158:42 am
MIA
-
LAS
Nonstop5h 44m
Frontier
Deal found 1/28$189
This Frontier deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:49 pm
LAS
-
MIA
Nonstop4h 43m
Frontier
Thu 4/305:45 pm
MIA
-
LAS
1 stop9h 05m
Frontier
Deal found 1/27$190
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1811:59 pm
LAS
-
MIA
1 stop7h 29m
Frontier
Mon 2/237:16 pm
MIA
-
LAS
2 stops21h 50m
Frontier
Deal found 1/27$191
This Cheapflightsfares deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:05 am
LAS
-
MIA
1 stop9h 55m
Frontier
Sat 3/78:08 pm
MIA
-
LAS
1 stop26h 07m
Frontier
Deal found 1/28$192
This CheapOair deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1111:51 am
LAS
-
MIA
1 stop22h 37m
Spirit Airlines
Mon 2/239:18 pm
MIA
-
LAS
1 stop24h 24m
Spirit Airlines
Deal found 1/27$194
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/303:35 pm
LAS
-
MIA
1 stop24h 58m
Multiple Airlines
Tue 3/37:05 am
MIA
-
LAS
2 stops19h 39m
Multiple Airlines
Deal found 1/27$195
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:00 am
LAS
-
MIA
1 stop6h 04m
Multiple Airlines
Thu 4/305:45 pm
MIA
-
LAS
1 stop9h 05m
Multiple Airlines
Deal found 1/27$196
This Mytrip deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/241:53 pm
LAS
-
MIA
2 stops18h 47m
Spirit Airlines
Tue 3/39:18 pm
MIA
-
LAS
2 stops16h 08m
Spirit Airlines
Deal found 1/27$197
This Cheapflightsfares deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:41 pm
LAS
-
MIA
1 stop29h 33m
Frontier
Sat 2/286:25 am
MIA
-
LAS
1 stop29h 16m
Frontier
Deal found 1/27$198
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:29 pm
LAS
-
MIA
Nonstop4h 36m
American Airlines
Tue 3/177:40 pm
MIA
-
LAS
Nonstop5h 49m
American Airlines
Deal found 1/27$199
This Frontier deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:49 pm
LAS
-
MIA
Nonstop4h 43m
Frontier
Fri 5/18:42 am
MIA
-
LAS
Nonstop5h 44m
Frontier
Deal found 1/27$200

Find flight deals from Las Vegas to Key Largo

Keep the following information in mind while searching for Las Vegas to Key Largo flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$189
(Cheapflightsfares)

One-way from

$113
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$320
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Miami flight deals.
Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Miami flights.
From Las Vegas Harry Reid Intl to Key Largo
One-way flight from Las Vegas Harry Reid Intl to Key Largo
Highest demand for flights based on searches. 12% potential increase in price ($44 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in January 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Las Vegas to Key Largo 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 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Las Vegas to Key Largo that are best for you.

Fly from

Las Vegas

Fly to

Key Largo

Route

Depart

Return

Price

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Sat 4/18

10:33 am-9:40 pm

1 stop8h 07m

Miami

Sat 4/25

3:47 pm-10:54 pm

1 stop10h 07m

$195

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 4/21

11:49 pm-7:32 am

Nonstop4h 43m

Miami

Sun 4/26

8:42 am-11:26 am

Nonstop5h 44m

$200

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 3/10

6:00 am-5:38 am

1 stop20h 38m

Miami

Sat 3/14

5:05 am-7:20 pm

2 stops17h 15m

$220

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 2/23

10:21 am-8:51 pm

1 stop7h 30m

Miami

Mon 3/2

7:50 am-9:42 pm

1 stop16h 52m

$228

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 3/25

8:20 am-10:15 pm

2 stops10h 55m

Miami

Tue 3/31

5:30 am-12:25 pm

2 stops9h 55m

$229

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 3/11

10:15 am-9:40 pm

2 stops8h 25m

Miami

Tue 3/17

5:30 am-12:25 pm

2 stops9h 55m

$229

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 2/10

6:00 am-3:30 pm

1 stop6h 30m

Miami

Tue 2/17

7:00 am-1:10 pm

2 stops9h 10m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 6/16

11:25 pm-11:31 am

1 stop9h 06m

Miami

Sat 6/20

7:15 am-12:43 pm

1 stop8h 28m

$317

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Sat 4/18

11:10 pm-5:18 pm

2 stops15h 08m

Miami

Sat 4/25

3:59 pm-11:01 pm

1 stop10h 02m

$318

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 3/17

10:15 am-9:40 pm

2 stops8h 25m

Miami

Thu 3/19

2:00 pm-9:45 pm

2 stops10h 45m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 24 results
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Best time to book a flight from Las Vegas to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Las Vegas 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 Las Vegas to Key Largo

How far ahead should I book a flight from Las Vegas to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Las Vegas to Key Largo. Price data was last updated on January 23, 2026.

The best time to book flights from Las Vegas to Key Largo is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Las Vegas to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Las Vegas to Key Largo (average of $66). Flying from Las Vegas to Key Largo in October is currently the most expensive (average of $168). 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 LAS to KE9?

Find hourly flight availability from Las Vegas to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 36% on flights from Las Vegas to Key Largo by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Las Vegas to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Las Vegas to Key Largo. Price data was last updated on January 24, 2026.

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

Weekly flight availability from Las Vegas to Key Largo

Explore weekly flight availability from Las Vegas to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 29, 2026.

The most flights from LAS to KE9 are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated January 29, 2026.
Read through reviews of airlines operating flights from Las Vegas to Key Largo, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Las Vegas to Key Largo?

    If you book a flight to Key Largo from Las Vegas, you will be flying from Harry Reid Intl, which is the city’s only airport. Las Vegas Harry Reid Intl (LAS) is located 6.2 mi from the center of Las Vegas. There are 8 flights from Harry Reid Intl to Key Largo per day from 8 different airlines.

  • How popular is this Las Vegas to Key Largo flight route?

  • How long is the flight from Las Vegas to Key Largo?

    There are many flights that can get you from Las Vegas to Key Largo in 4h 43m. Fly via Frontier or Southwest to get the fastest option. The distance between Las Vegas and Key Largo is about 2170 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Las Vegas to Key Largo one-way?

    The cheapest airlines for a one-way flight from Las Vegas to Key Largo are Spirit Airlines ($65), Frontier ($67), and Southwest ($89).

  • What are the most reliable airlines from Las Vegas to Key Largo?

    Consider Delta (100%), Finnair (94%) or Royal Air Maroc (92%) when booking your flight. These represent the most reliable airlines when flying from Las Vegas to Key Largo.

  • What are the cheapest flights from Las Vegas to Key Largo?

    On average you can expect to pay $1,234 for a flight from Las Vegas to Key Largo. The cheapest flight overall is $113 while the most popular route, (Las Vegas Harry Reid Intl - Miami) is currently priced at $129.

  • Can I find deals for flights from Las Vegas to Key Largo that include hotel bookings?

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

  • How can I find direct flights from Las Vegas to Key Largo?

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

  • Can I find deals for business class flights from Las Vegas to Key Largo?

    Yes. Cheapflights offers flight deals from Las Vegas to Key Largo 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 Las Vegas to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Las Vegas to Key Largo (average of $66). Flying from Las Vegas to Key Largo in October is currently the most expensive (average of $168). 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

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Top 8 airlines flying from Las Vegas to Key Largo

Discover the top 8 airlines that operate flights from Las Vegas to Key Largo. 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 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$63Average$190FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$78Average$203FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$129Average$444FlexibilityNo cancel feeOn-time75%
DeltaCheapest$133Average$301FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$158Average$329FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$182Average$358FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$192Average$361FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$198Average$373FlexibilityNo cancel feeOn-time71%

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