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Key Largo

$89+ 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — MIA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Key Largo are usually found in August or January, booked 29 days in advance, depart on a Thursday or Saturday and return on a Saturday

Cheap 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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$174
(Kiwi.com)

One-way from

$89
(Travelocity)

Popular in

March

Cheapest in

August

Average price

$285
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Miami flight deals.
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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Miami flights.
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From Las Vegas Harry Reid Intl to Key Largo
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One-way flight from Las Vegas Harry Reid Intl to Key Largo
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Highest demand for flights based on searches. 9% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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.
Fri 11/149:00 amLAS - MIA
1 stop6h 44mSpirit Airlines
Thu 11/2010:45 amMIA - LAS
1 stop11h 57mSpirit Airlines
Deal found 10/28$173
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/511:30 amLAS - MIA
2 stops10h 16mFrontier
Mon 12/87:05 amMIA - LAS
1 stop14h 14mFrontier
Deal found 10/30$174
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Thu 11/279:00 amLAS - MIA
1 stop7h 25mMultiple Airlines
Mon 12/12:00 pmMIA - LAS
1 stop12h 04mMultiple Airlines
Deal found 10/29$175
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:32 pmLAS - MIA
1 stop9h 16mFrontier
Mon 1/57:05 amMIA - LAS
Nonstop5h 37mFrontier
Deal found 10/28$176
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:47 amLAS - MIA
1 stop9h 07mMultiple Airlines
Fri 12/197:05 amMIA - LAS
Nonstop5h 37mMultiple Airlines
Deal found 10/28$177
This Southwest deal was found by Cheapflights users on 10/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1411:40 pmLAS - MIA
1 stop10h 25mSouthwest
Wed 12/179:30 amMIA - LAS
1 stop6h 50mSouthwest
Deal found 10/29$178
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Thu 11/1311:56 pmLAS - MIA
2 stops31h 02mMultiple Airlines
Mon 11/178:25 amMIA - LAS
1 stop8h 20mMultiple Airlines
Deal found 10/29$179
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/272:32 pmLAS - MIA
1 stop29h 36mMultiple Airlines
Wed 12/35:13 pmMIA - LAS
1 stop9h 33mMultiple Airlines
Deal found 10/28$180
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/118:00 amLAS - MIA
1 stop26h 20mFrontier
Fri 11/1410:15 pmMIA - LAS
1 stop15h 16mFrontier
Deal found 10/29$181
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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 12/46:58 pmLAS - MIA
1 stop10h 25mSpirit Airlines
Sun 12/79:59 pmMIA - LAS
1 stop12h 20mSpirit Airlines
Deal found 10/29$182
This Frontier deal was found by Cheapflights users on 10/30. 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 11/148:48 pmLAS - MIA
1 stop6h 31mFrontier
Thu 11/208:36 amMIA - LAS
1 stop8h 33mFrontier
Deal found 10/30$183

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 October 30, 2025.
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 1/17

6:35 am-8:40 pm

1 stop11h 05m

Miami

Sun 1/25

7:55 am-4:20 pm

2 stops11h 25m

$248

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 12/1

12:35 am-11:21 am

1 stop7h 46m

Miami

Tue 12/9

3:50 pm-8:45 pm

1 stop7h 55m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 12/10

12:59 am-10:53 am

1 stop6h 54m

Miami

Sat 12/20

6:15 pm-12:57 am

1 stop9h 42m

$306

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Thu 11/27

12:30 pm-12:46 am

1 stop9h 16m

Miami

Wed 12/3

7:39 am-1:05 pm

1 stop8h 26m

$313

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Sun 12/14

11:40 pm-1:05 pm

1 stop10h 25m

Miami

Fri 12/19

7:00 am-12:55 pm

2 stops8h 55m

$324

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Fri 1/16

12:00 pm-10:10 pm

2 stops7h 10m

Miami

Sun 1/25

7:55 am-4:20 pm

2 stops11h 25m

$329

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 1/21

6:00 am-9:26 pm

1 stop12h 26m

Miami

Mon 1/26

6:04 am-7:13 pm

2 stops16h 09m

$352

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 12/2

6:55 pm-6:04 am

1 stop8h 09m

Miami

Tue 12/9

7:15 am-7:36 pm

2 stops15h 21m

$358

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Sat 1/17

8:50 am-9:35 pm

2 stops9h 45m

Miami

Mon 1/19

7:00 am-1:10 pm

2 stops9h 10m

$369

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 11/12

6:00 am-9:58 pm

2 stops12h 58m

Miami

Sat 11/15

9:00 am-5:02 pm

2 stops11h 02m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 21 results
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2
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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 October 24, 2025.

The best time to book flights from Las Vegas to Key Largo is 29 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 $143). 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 October 30, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 57% 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 December 16, 2024.

Travelers seeking maximum savings on their Las Vegas to Key Largo flight should consider departing on Monday afternoons 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.

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 October 30, 2025.
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.
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

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.
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

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.
Delta
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

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.
American Airlines
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

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.
Spirit Airlines
6.3
Okay
8,116 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

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.
Frontier
5.8
Fair
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

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 7 flights from Harry Reid Intl to Key Largo per day from 7 different airlines.

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

    Within the past month, 31 users have taken a look at flights from Las Vegas Harry Reid Intl to Key Largo.

  • 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 6h 54m. Fly via Southwest, Delta, or United Airlines 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 most reliable airlines from Las Vegas to Key Largo?

    Consider Frontier (100%), British Airways (87%) or American Airlines (85%) 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 $748 for a flight from Las Vegas to Key Largo. The cheapest flight overall is $126 while the most popular route, (Las Vegas Harry Reid Intl - Miami) is currently priced at $130.

  • 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 $143). 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.

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Alternative routes for Las Vegas to Key Largo

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Top 7 airlines flying from Las Vegas to Key Largo

Discover the top 7 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$63Average$183FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$97Average$212FlexibilityNo cancel feeOn-time65%
DeltaCheapest$133Average$309FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$176Average$363FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$176Average$308FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$192Average$363FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$198Average$375FlexibilityNo cancel feeOn-time71%

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