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$81+ Cheap flights from Key Largo, FL to Las Vegas (LAS)

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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LAS
Nov 6 — Nov 131
Thu 11/6
Thu 11/13
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Key Largo to Las Vegas Harry Reid Intl are usually found in January or February, booked 78 days in advance, depart on a Saturday or Tuesday and return on a Thursday

Cheap flight deals from Key Largo to Las Vegas

Keep the following information in mind while searching for Key Largo to Las Vegas flight deals. Data was last updated October 7, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$176
(American Airlines)

One-way from

$81
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$356
Provider with most accurate pricing for Miami-Las Vegas Harry Reid Intl flight deals.
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Provider most trusted by Cheapflights users for Miami-Las Vegas Harry Reid Intl flights.
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From Key Largo to Las Vegas Harry Reid Intl
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One-way flight from Key Largo to Las Vegas Harry Reid Intl
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($5 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 Key Largo to Las Vegas

Cheapest flights from Key Largo to Las Vegas
Explore the most affordable flight options available from Key Largo to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 7, 2025.

This American Airlines deal was found by Cheapflights users on 10/5. 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.
Sat 11/19:33 pmMIA - LAS
Nonstop5h 26mAmerican Airlines
Tue 11/412:50 pmLAS - MIA
Nonstop4h 33mAmerican Airlines
Deal found 10/5$176
This Cheapflightsfares deal was found by Cheapflights users on 10/5. 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 11/412:17 pmMIA - LAS
1 stop10h 35mSpirit Airlines
Fri 11/711:59 pmLAS - MIA
1 stop13h 23mSpirit Airlines
Deal found 10/5$177
This Cheapflightsfares deal was found by Cheapflights users on 10/5. 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 11/12:35 pmMIA - LAS
1 stop11h 35mSpirit Airlines
Tue 11/42:10 pmLAS - MIA
1 stop6h 58mSpirit Airlines
Deal found 10/5$178
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Mon 11/105:27 pmMIA - LAS
1 stop17h 54mSpirit Airlines
Fri 11/142:10 pmLAS - MIA
1 stop6h 58mSpirit Airlines
Deal found 10/6$179
This Cheapflightsfares deal was found by Cheapflights users on 10/6. 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 10/2512:50 pmMIA - LAS
1 stop11h 46mSpirit Airlines
Tue 10/289:00 amLAS - MIA
1 stop6h 11mSpirit Airlines
Deal found 10/6$180
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 11/512:17 pmMIA - LAS
1 stop10h 35mMultiple Airlines
Fri 11/78:48 pmLAS - MIA
1 stop6h 31mMultiple Airlines
Deal found 10/6$181
This Mytrip deal was found by Cheapflights users on 10/7. 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.
Wed 11/56:25 amMIA - LAS
3 stops16h 27mSpirit Airlines
Sat 11/159:00 amLAS - MIA
1 stop12h 08mSpirit Airlines
Deal found 10/7$182
This Southwest deal was found by Cheapflights users on 10/6. 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 11/67:25 pmMIA - LAS
1 stop7h 30mSouthwest
Mon 11/106:00 amLAS - MIA
1 stop7h 30mSouthwest
Deal found 10/6$183
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 10/256:41 pmMIA - LAS
1 stop27h 21mSpirit Airlines
Sat 11/19:00 amLAS - MIA
1 stop9h 07mSpirit Airlines
Deal found 10/7$184
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 11/45:27 pmMIA - LAS
2 stops16h 59mSpirit Airlines
Thu 11/63:10 pmLAS - MIA
1 stop17h 12mSpirit Airlines
Deal found 10/6$185
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 11/37:20 amMIA - LAS
1 stop20h 24mMultiple Airlines
Tue 11/42:10 pmLAS - MIA
1 stop6h 58mMultiple Airlines
Deal found 10/7$187

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Las Vegas 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 7, 2025.
Use the filters below to find and compare flights from Key Largo to Las Vegas that are best for you.

Fly from

Key Largo

Fly to

Las Vegas

Route

Depart

Return

Price

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 12/11

1:30 pm-9:40 pm

1 stop11h 10m

Las Vegas Harry Reid Intl

Sat 12/13

11:40 pm-1:35 pm

1 stop10h 55m

$188

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 1/29

12:55 pm-8:55 pm

1 stop11h 00m

Las Vegas Harry Reid Intl

Sat 1/31

6:30 am-3:50 pm

1 stop6h 20m

$205

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 11/6

7:25 pm-11:55 pm

1 stop7h 30m

Las Vegas Harry Reid Intl

Thu 11/13

6:55 am-6:45 pm

1 stop8h 50m

$215

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 10/30

8:00 am-12:33 pm

1 stop7h 33m

Las Vegas Harry Reid Intl

Mon 11/3

12:59 am-10:53 am

1 stop6h 54m

$247

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 10/22

12:09 pm-6:46 pm

1 stop9h 37m

Las Vegas Harry Reid Intl

Tue 10/28

6:00 am-5:10 pm

1 stop8h 10m

$257

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Mon 11/10

4:52 pm-9:29 pm

1 stop7h 37m

Las Vegas Harry Reid Intl

Mon 11/17

10:20 pm-11:05 am

1 stop9h 45m

$257

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Tue 10/28

2:27 pm-9:00 pm

1 stop9h 33m

Las Vegas Harry Reid Intl

Tue 11/4

6:00 am-4:30 pm

1 stop7h 30m

$257

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Mon 11/24

6:20 am-11:25 am

1 stop8h 05m

Las Vegas Harry Reid Intl

Tue 12/2

10:45 am-9:50 pm

2 stops8h 05m

$260

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Tue 2/24

9:00 am-2:15 pm

1 stop8h 15m

Las Vegas Harry Reid Intl

Sat 2/28

8:15 am-10:30 pm

2 stops11h 15m

$264

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 11/12

11:40 am-6:40 pm

2 stops10h 00m

Las Vegas Harry Reid Intl

Wed 11/19

10:45 am-9:50 pm

2 stops8h 05m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/4

Showing 1-10 of 23 results
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Best time to book a flight from Key Largo to Las Vegas

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Las Vegas. Price data was last updated on October 3, 2025.

To ensure you get the cheapest price possible for a flight from Key Largo to Las Vegas, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Key Largo to Las Vegas (average of $104). Flying from Key Largo to Las Vegas in September is currently the most expensive (average of $138). 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 KE9 to LAS?

Find hourly flight availability from Key Largo to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 7, 2025.

One of the essential ways to save on airfare from Key Largo to Las Vegas is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 15% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Las Vegas. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Key Largo to Las Vegas

Explore weekly flight availability from Key Largo to Las Vegas. 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 October 7, 2025.

The most flights from KE9 to LAS are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (11 on average).

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. 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 Las Vegas. Reviews last updated October 7, 2025.
Get a feel of what it's like to fly with Delta, American Airlines, and JetBlue from Key Largo to Las Vegas by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
American Airlines
7.2
Good
11,041 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
JetBlue
7.2
Good
2,908 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Spirit Airlines
6.3
Okay
8,080 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Frontier
5.8
Fair
3,144 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Las Vegas. 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 into for flights to Las Vegas from Key Largo?

    For a flight from Key Largo to Las Vegas, you will be flying into Harry Reid Intl. Las Vegas Harry Reid Intl (LAS) is just 6.2 mi from the center of the city. Harry Reid Intl is the only Las Vegas airport and it handles 11 inbound flights from Key Largo per day. 7 airlines have flights to Las Vegas Harry Reid Intl from Key Largo on a regular basis.

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

    Flights from Key Largo to Las Vegas Harry Reid Intl have been viewed 81 times in the past calendar month.

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

    Airlines like Southwest, United Airlines, and Delta fly from Key Largo to Las Vegas in about 7h 33m. The time it takes to get you to your destination can typically vary by up to 3h 37m. Key Largo and Las Vegas are separated by a distance of 2170 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Key Largo to Las Vegas on time: Frontier (100%), British Airways (73%), American Airlines (72%).

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

    Looking for the cheapest flight from Key Largo to Las Vegas? While on average our users pay $1,071, our data indicates the cheapest price to be $82. The most popular route (Miami - Las Vegas Harry Reid Intl), is priced around $113.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Key Largo to Las Vegas (average of $104). Flying from Key Largo to Las Vegas in September is currently the most expensive (average of $138). 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

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Henderson
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Primm
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Mesquite
Needles
Boulder City

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Top 7 airlines flying from Key Largo to Las Vegas

Discover the top 7 airlines that operate flights from Key Largo to Las Vegas. 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 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$117Average$217FlexibilityNo cancel feeOn-time65%
FrontierCheapest$125Average$187FlexibilityNo cancel feeOn-time62%
DeltaCheapest$140Average$327FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$168Average$398FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$179Average$369FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$182Average$363FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$192Average$348FlexibilityNo cancel feeOn-time69%

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