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$88+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LAS
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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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 Tuesday or Saturday and return on a Saturday

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 November 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$176
(Kiwi.com)

One-way from

$88
(Kiwi.com)

Popular in

October

Cheapest in

January

Average price

$346
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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Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/23. 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 12/146:05 amMIA - LAS
1 stop18h 47mMultiple Airlines
Tue 12/1610:58 pmLAS - MIA
1 stop10h 19mMultiple Airlines
Deal found 11/23$176
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 12/122:50 pmMIA - LAS
1 stop21h 23mMultiple Airlines
Mon 12/156:30 amLAS - MIA
2 stops22h 53mMultiple Airlines
Deal found 11/24$178
This Booking.com deal was found by Cheapflights users on 11/25. 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.
Thu 12/187:05 amMIA - LAS
Nonstop5h 37mMultiple Airlines
Tue 12/2311:16 amLAS - MIA
1 stop6h 48mMultiple Airlines
Deal found 11/25$179
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/156:05 amMIA - LAS
2 stops17h 40mMultiple Airlines
Fri 12/1910:01 pmLAS - MIA
Nonstop4h 34mMultiple Airlines
Deal found 11/25$180
This Priceline deal was found by Cheapflights users on 11/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:36 pmMIA - LAS
1 stop11h 10mMultiple Airlines
Thu 12/1110:58 pmLAS - MIA
1 stop9h 14mMultiple Airlines
Deal found 11/24$181
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/176:00 amMIA - LAS
1 stop7h 41mFrontier
Sun 12/2111:00 pmLAS - MIA
1 stop8h 49mFrontier
Deal found 11/25$182
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/172:10 pmMIA - LAS
1 stop7h 16mMultiple Airlines
Sat 12/2010:31 pmLAS - MIA
1 stop9h 27mMultiple Airlines
Deal found 11/25$183
This Frontier deal was found by Cheapflights users on 11/25. 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.
Mon 12/157:05 amMIA - LAS
1 stop14h 14mFrontier
Sun 12/2111:00 pmLAS - MIA
1 stop8h 49mFrontier
Deal found 11/25$185
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/1612:00 pmMIA - LAS
1 stop8h 18mMultiple Airlines
Fri 12/1910:01 pmLAS - MIA
Nonstop4h 34mMultiple Airlines
Deal found 11/25$186
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/155:05 amMIA - LAS
1 stop15h 13mMultiple Airlines
Tue 12/236:50 amLAS - MIA
1 stop9h 40mMultiple Airlines
Deal found 11/25$187
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/155:05 amMIA - LAS
1 stop15h 13mSpirit Airlines
Tue 12/2311:16 amLAS - MIA
1 stop6h 48mSpirit Airlines
Deal found 11/25$188

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 November 26, 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

Sat 2/14

6:50 pm-11:00 pm

1 stop7h 10m

Las Vegas Harry Reid Intl

Thu 2/19

12:55 pm-10:10 pm

1 stop6h 15m

$179

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Mon 12/22

7:50 am-1:25 pm

1 stop8h 35m

Las Vegas Harry Reid Intl

Wed 12/31

10:04 pm-9:28 am

1 stop8h 24m

$307

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 2/11

12:00 pm-7:30 pm

2 stops10h 30m

Las Vegas Harry Reid Intl

Thu 2/12

5:05 am-5:55 pm

2 stops9h 50m

$311

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 12/17

9:30 am-3:45 pm

2 stops9h 15m

Las Vegas Harry Reid Intl

Mon 12/22

5:50 am-6:40 pm

1 stop9h 50m

$318

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Sat 2/14

6:35 am-1:00 pm

2 stops9h 25m

Las Vegas Harry Reid Intl

Mon 2/16

9:15 am-11:15 pm

2 stops11h 00m

$321

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Tue 12/16

6:00 am-4:53 pm

2 stops13h 53m

Las Vegas Harry Reid Intl

Tue 12/23

10:04 pm-10:23 am

1 stop9h 19m

$340

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 1/22

11:58 am-8:45 am

1 stop23h 47m

Las Vegas Harry Reid Intl

Sun 1/25

11:59 pm-10:58 am

1 stop7h 59m

$350

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Sat 12/20

4:43 pm-9:40 pm

1 stop7h 57m

Las Vegas Harry Reid Intl

Sun 12/21

12:59 am-10:54 am

1 stop6h 55m

$355

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 5/20

3:35 pm-9:11 pm

1 stop8h 36m

Las Vegas Harry Reid Intl

Sat 5/23

12:45 am-1:30 pm

1 stop9h 45m

$360

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Tue 5/19

1:25 pm-5:00 pm

1 stop6h 35m

Las Vegas Harry Reid Intl

Wed 5/20

6:35 am-3:50 pm

1 stop6h 15m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 20 results
1
2

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 November 21, 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 $102). 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 November 26, 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 21% 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. Sunday afternoons 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 November 26, 2025.

The most flights from KE9 to LAS are scheduled on a Tuesday (14 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (7 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 November 26, 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
7.9
Good
8,003 reviews

Overall

7.9

Boarding

8.1

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
7.9
Good
8,003 reviews
Delta
7.9
Good
8,003 reviews

Overall

7.9

Boarding

8.1

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
11,037 reviews
Delta
7.9
Good
8,003 reviews

Overall

7.9

Boarding

8.1

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
2,905 reviews
Delta
7.9
Good
8,003 reviews

Overall

7.9

Boarding

8.1

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
8,156 reviews
Delta
7.9
Good
8,003 reviews

Overall

7.9

Boarding

8.1

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
3,101 reviews
Delta
7.9
Good
8,003 reviews

Overall

7.9

Boarding

8.1

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

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 10 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 74 times in the past calendar month.

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

    Airlines like Southwest and Delta fly from Key Largo to Las Vegas in about 7h 10m. The time it takes to get you to your destination can typically vary by up to 1h 25m. 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: Royal Air Maroc (83%), GOL (79%), British Airways (79%).

  • 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 $1,113, our data indicates the cheapest price to be $108. The most popular route (Miami - Las Vegas Harry Reid Intl), is priced around $129.

  • 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 $102). 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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Winchester
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Primm
Sunrise Manor
Mount Charleston
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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$117Average$217FlexibilityNo cancel feeOn-time65%
FrontierCheapest$126Average$199FlexibilityNo cancel feeOn-time62%
DeltaCheapest$140Average$334FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$177Average$373FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$178Average$369FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$182Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$192Average$344FlexibilityNo cancel feeOn-time69%

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