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Key Largo

$77+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — MIA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 Tuesday 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 December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Mon 12/297:00 pmLAS - MIA
2 stops55h 00mMultiple Airlines
Tue 2/249:18 pmMIA - LAS
1 stop29h 31mMultiple Airlines
Deal found 12/17$224
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Mon 12/297:00 pmLAS - MIA
2 stops55h 00mMultiple Airlines
Sat 2/219:53 pmMIA - LAS
1 stop28h 51mMultiple Airlines
Deal found 12/17$230
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/3110:24 amLAS - MIA
2 stops15h 36mFrontier
Mon 1/510:19 pmMIA - LAS
1 stop13h 20mFrontier
Deal found 12/17$243
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Mon 12/2910:50 amLAS - MIA
1 stop30h 47mMultiple Airlines
Thu 2/269:53 pmMIA - LAS
1 stop14h 31mMultiple Airlines
Deal found 12/17$250
This Travelocity deal was found by Cheapflights users on 12/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:30 pmLAS - MIA
1 stop29h 30mFrontier
Tue 12/309:42 pmMIA - LAS
1 stop25h 13mFrontier
Deal found 12/15$253
This CheapOair deal was found by Cheapflights users on 12/17. 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.
Mon 12/2210:50 amLAS - MIA
1 stop30h 47mFrontier
Mon 1/510:19 pmMIA - LAS
1 stop13h 20mFrontier
Deal found 12/17$254
This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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.
Tue 12/2310:31 pmLAS - MIA
1 stop9h 27mFrontier
Wed 12/3110:32 amMIA - LAS
1 stop26h 12mFrontier
Deal found 12/17$277
This Super.com deal was found by Cheapflights users on 12/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2011:20 pmLAS - MIA
1 stop18h 04mFrontier
Mon 12/2211:44 amMIA - LAS
1 stop12h 05mFrontier
Deal found 12/16$281
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Sun 12/2810:01 pmLAS - MIA
Nonstop4h 34mMultiple Airlines
Fri 2/279:18 pmMIA - LAS
1 stop29h 31mMultiple Airlines
Deal found 12/17$283

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 December 18, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$195
(Kiwi.com)

One-way from

$77
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$378
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
Search Deals
One-way flight from Las Vegas Harry Reid Intl to Key Largo
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Mon 1/26

11:15 pm-10:26 am

1 stop8h 11m

Miami

Sat 2/7

5:50 am-10:35 am

1 stop7h 45m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Fri 4/10

8:32 am-11:18 pm

1 stop11h 46m

Miami

Mon 4/13

3:36 pm-12:00 am

1 stop11h 24m

$258

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Thu 2/26

9:15 am-11:15 pm

2 stops11h 00m

Miami

Tue 3/3

7:15 am-3:05 pm

2 stops10h 50m

$275

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 5/27

6:00 am-5:48 pm

1 stop8h 48m

Miami

Sat 6/6

7:15 am-12:43 pm

1 stop8h 28m

$297

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 4/7

12:45 am-10:40 am

1 stop6h 55m

Miami

Wed 4/15

8:05 am-1:40 pm

1 stop8h 35m

$297

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 4/6

8:42 am-8:43 pm

1 stop9h 01m

Miami

Wed 4/8

3:12 pm-12:00 am

2 stops11h 48m

$312

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 2/10

5:55 pm-10:40 am

2 stops13h 45m

Miami

Wed 2/18

1:28 pm-6:56 pm

1 stop8h 28m

$319

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 1/28

6:14 pm-6:07 am

1 stop8h 53m

Miami

Wed 2/4

5:15 am-7:13 pm

2 stops16h 58m

$352

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 1/27

7:00 am-11:43 pm

2 stops13h 43m

Miami

Wed 2/4

7:00 am-9:00 pm

2 stops17h 00m

$357

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Sat 1/24

7:40 am-11:30 pm

2 stops12h 50m

Miami

Sat 1/31

10:55 am-4:00 pm

1 stop8h 05m

$362

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 22 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 December 12, 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 $167). 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 December 18, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 54% 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 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.

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 December 18, 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
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

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
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

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
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

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
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

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
8,190 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

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
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

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 5 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?

    Within the past month, 34 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 8h 11m. Fly via Delta, 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 ($66), Frontier ($66), and Alaska Airlines ($88).

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

    Consider Finnair (100%), GOL (89%) or British Airways (89%) 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 $1,299 for a flight from Las Vegas to Key Largo. The cheapest flight overall is $143 while the most popular route, (Las Vegas Harry Reid Intl - Miami) is currently priced at $119.

  • 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 $167). 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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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$63Average$185FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$93Average$204FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$129Average$444FlexibilityNo cancel feeOn-time75%
DeltaCheapest$138Average$303FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$172Average$320FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$182Average$359FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$192Average$362FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$198Average$371FlexibilityNo cancel feeOn-time71%

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