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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — MIA
Oct 15 — Oct 221
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Las Vegas to Key Largo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Key Largo are usually found in October or August, 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 September 15, 2025.

Round-trip from

$158
(Cheapflightsfares)

One-way from

$89
(Spirit)

Popular in

March

Cheapest in

October

Average price

$279
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. 11% potential increase in price ($36 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in September 2025

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 September 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 10/174:01 pmLAS - MIA
1 stop21h 13mFrontier
Mon 10/278:00 amMIA - LAS
1 stop15h 04mFrontier
Deal found 9/12$158
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 10/168:32 amLAS - MIA
1 stop12h 10mFrontier
Tue 10/214:05 pmMIA - LAS
1 stop7h 42mFrontier
Deal found 9/12$159
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:59 amLAS - MIA
1 stop20h 45mFrontier
Mon 10/68:00 amMIA - LAS
1 stop13h 28mFrontier
Deal found 9/13$160
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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.
Sat 10/184:44 pmLAS - MIA
1 stop13h 35mSpirit Airlines
Fri 10/249:30 pmMIA - LAS
Nonstop5h 18mSpirit Airlines
Deal found 9/12$161
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/47:59 pmLAS - MIA
1 stop9h 55mSpirit Airlines
Fri 10/179:30 pmMIA - LAS
Nonstop5h 18mSpirit Airlines
Deal found 9/14$162
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 10/1011:00 amLAS - MIA
Nonstop4h 42mSpirit Airlines
Mon 10/139:30 pmMIA - LAS
Nonstop5h 18mSpirit Airlines
Deal found 9/12$163
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:59 amLAS - MIA
1 stop12h 15mFrontier
Sat 10/256:00 amMIA - LAS
1 stop12h 29mFrontier
Deal found 9/13$164
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/1010:56 pmLAS - MIA
1 stop19h 23mFrontier
Sun 10/196:00 amMIA - LAS
1 stop11h 58mFrontier
Deal found 9/14$165
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Fri 10/312:59 amLAS - MIA
1 stop20h 45mFrontier
Fri 10/105:56 pmMIA - LAS
1 stop27h 00mFrontier
Deal found 9/13$166
This Frontier deal was found by Cheapflights users on 9/13. 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 10/248:51 amLAS - MIA
1 stop12h 59mFrontier
Sun 10/266:43 pmMIA - LAS
1 stop8h 01mFrontier
Deal found 9/13$167
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:59 pmLAS - MIA
1 stop13h 16mFrontier
Sun 10/126:00 amMIA - LAS
1 stop15h 55mFrontier
Deal found 9/14$168
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/2410:56 pmLAS - MIA
1 stop19h 23mMultiple Airlines
Fri 10/319:30 pmMIA - LAS
Nonstop5h 18mMultiple Airlines
Deal found 9/14$169

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 September 15, 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

Wed 12/3

5:35 am-7:50 pm

2 stops11h 15m

Miami

Thu 12/4

1:30 pm-9:40 pm

1 stop11h 10m

$183

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Sun 11/2

10:33 pm-9:19 am

1 stop7h 46m

Miami

Mon 11/3

7:22 pm-11:11 pm

1 stop6h 49m

$233

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 10/6

12:59 am-11:00 am

1 stop7h 01m

Miami

Tue 10/7

4:56 pm-12:04 am

2 stops10h 08m

$252

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 10/6

12:45 am-1:11 pm

1 stop9h 26m

Miami

Tue 10/14

6:15 pm-10:29 pm

1 stop7h 14m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Fri 10/3

12:45 am-1:34 pm

1 stop9h 49m

Miami

Wed 10/8

6:45 pm-11:30 pm

1 stop7h 45m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 10/27

12:35 am-1:28 pm

1 stop9h 53m

Miami

Mon 11/10

7:25 pm-12:25 am

1 stop8h 00m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Fri 10/17

12:35 am-1:28 pm

1 stop9h 53m

Miami

Sat 10/25

7:36 am-12:54 pm

1 stop8h 18m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 12/2

6:00 am-3:50 pm

1 stop6h 50m

Miami

Tue 12/9

3:50 pm-8:24 pm

1 stop7h 34m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 9/30

6:20 am-5:07 pm

1 stop7h 47m

Miami

Tue 10/7

4:35 pm-10:29 pm

1 stop8h 54m

$269

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 11/18

11:40 pm-1:05 pm

1 stop10h 25m

$97

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 19 results
1
2

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 September 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 $232). Flying from Las Vegas to Key Largo in March is currently the most expensive (average of $289). 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 September 15, 2025.

When flying from Las Vegas to Key Largo, 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 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 Friday afternoons when fares are most often at their lowest. Sunday 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 September 15, 2025.

The most flights from LAS to KE9 are scheduled on a Friday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip from Las Vegas to Key Largo?

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 September 15, 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.

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

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.

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

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.
8.0
Very good

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

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.

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

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.

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

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.

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

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 10 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?

  • 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 7h 01m. Fly via Southwest, Spirit Airlines, 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 Qatar Airways (87%), GOL (83%) or American Airlines (81%) 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 $940 for a flight from Las Vegas to Key Largo. The cheapest flight overall is $97 while the most popular route, (Las Vegas Harry Reid Intl - Miami) is currently priced at $153.

  • 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 $232). Flying from Las Vegas to Key Largo in March is currently the most expensive (average of $289). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$81Average$171FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$100Average$210FlexibilityNo cancel feeOn-time65%
DeltaCheapest$158Average$338FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$172Average$371FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$174Average$308FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$200Average$371FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$224Average$367FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.