HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$79+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — MIA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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 September or August, booked 23 days in advance, depart on a Thursday or Saturday and return on a Wednesday

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 June 12, 2025.

Round-trip from

$160
(Cheapflightsfares)

One-way from

$79
(Frontier)

Popular in

March

Cheapest in

September

Average price

$291
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. 11% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 6/241:25 pmLAS - MIA
Nonstop4h 50mSpirit Airlines
Fri 6/278:55 pmMIA - LAS
Nonstop5h 34mSpirit Airlines
Deal found 6/11$160
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/3110:00 pmLAS - MIA
Nonstop4h 38mMultiple Airlines
Sat 8/97:15 amMIA - LAS
Nonstop5h 05mMultiple Airlines
Deal found 6/11$166
This Southwest deal was found by Cheapflights users on 6/10. 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.
Thu 7/106:15 amLAS - MIA
1 stop12h 20mSouthwest
Tue 7/157:10 amMIA - LAS
1 stop7h 05mSouthwest
Deal found 6/10$168
This American Airlines deal was found by Cheapflights users on 6/10. 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 11/410:56 pmLAS - MIA
Nonstop4h 34mAmerican Airlines
Wed 11/127:30 pmMIA - LAS
Nonstop5h 33mAmerican Airlines
Deal found 6/10$175
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 7/29:48 pmLAS - MIA
Nonstop4h 57mFrontier
Wed 7/96:00 amMIA - LAS
1 stop8h 02mFrontier
Deal found 6/11$194
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2512:40 amLAS - MIA
1 stop9h 58mDelta
Sat 8/212:46 pmMIA - LAS
1 stop10h 28mDelta
Deal found 6/11$257

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 June 12, 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

Tue 6/24

1:25 pm-9:15 pm

Nonstop4h 50m

Miami

Fri 6/27

8:55 pm-11:29 pm

Nonstop5h 34m

$160

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Thu 7/31

10:00 pm-5:38 am

Nonstop4h 38m

Miami

Sat 8/9

7:15 am-9:20 am

Nonstop5h 05m

$166

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Thu 7/10

6:15 am-9:35 pm

1 stop12h 20m

Miami

Tue 7/15

7:10 am-11:15 am

1 stop7h 05m

$168

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Thu 7/31

9:48 pm-5:45 am

Nonstop4h 57m

Miami

Tue 8/12

6:00 am-11:02 am

1 stop8h 02m

$177

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Wed 7/16

11:23 pm-7:16 am

Nonstop4h 53m

Miami

Wed 7/23

8:14 pm-10:23 pm

Nonstop5h 09m

$229

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Fri 7/25

12:40 am-1:38 pm

1 stop9h 58m

Miami

Sat 8/2

12:46 pm-8:14 pm

1 stop10h 28m

$257

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Fri 7/4

9:48 pm-5:45 am

Nonstop4h 57m

$79

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Thu 7/17

11:50 am-11:55 pm

1 stop9h 05m

$81

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Mon 7/7

12:44 am-6:00 pm

1 stop14h 16m

$82

Las VegasMiami

LAS - MIA

LASMIA

Las Vegas Harry Reid Intl

Tue 9/9

12:35 am-1:33 pm

1 stop9h 58m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 14 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 June 9, 2025.

The best time to book flights from Las Vegas to Key Largo is 23 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 $228). 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 June 12, 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 June 12, 2025.

The most flights from LAS to KE9 are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Las Vegas to Key Largo, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 13 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, 30 users have taken a look at flights from Las Vegas Harry Reid Intl to Key Largo.

  • 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 Frontier ($79), Southwest ($81), and Spirit Airlines ($82).

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

    Consider Royal Air Maroc (89%), Spirit Airlines (89%) or Qatar Airways (88%) 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 $947 for a flight from Las Vegas to Key Largo. The cheapest flight overall is $75 while the most popular route, (Las Vegas Harry Reid Intl - Miami) is currently priced at $88.

  • 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 $228). 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.

Alternative routes for Las Vegas to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Las Vegas to Orlando flights
Las Vegas to Fort Lauderdale flights
Las Vegas to Miami flights
Las Vegas to Tampa flights
Las Vegas to Jacksonville flights
Reno to Miami flights
Las Vegas to West Palm Beach flights
Reno to Fort Lauderdale flights
Las Vegas to Fort Myers flights
Reno to Orlando flights
Las Vegas to Key West flights
Las Vegas to Pensacola flights
Reno to Tampa flights
Las Vegas to Panama City flights
Reno to Jacksonville flights
Las Vegas to Tallahassee flights
Las Vegas to Sarasota flights
Las Vegas to Melbourne flights
Las Vegas to Daytona Beach flights
Las Vegas to Valparaiso flights
Reno to Gainesville flights
Reno to Pensacola flights
Las Vegas to Gainesville flights
Las Vegas to Valdosta flights
Reno to Fort Myers flights
Reno to Tallahassee flights
Reno to Daytona Beach flights
Reno to West Palm Beach flights
Reno to Sarasota flights
Twin Falls to Orlando flights
Reno to Panama City flights
Reno to Valdosta flights
Reno to Valparaiso flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$81Average$171FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$94Average$214FlexibilityNo cancel feeOn-time65%
DeltaCheapest$138Average$351FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$179Average$324FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$218Average$372FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$226Average$369FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$271Average$395FlexibilityNo cancel feeOn-time63%

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.