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$87+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LAS
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
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 May or June, booked 78 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

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 January 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$187
(Kiwi.com)

One-way from

$87
(CheapOair)

Popular in

December

Cheapest in

May

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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Highest demand for flights based on searches. 10% potential increase in price ($40 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 January 2026
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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 January 15, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/14. 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.
Sun 2/16:40 am
MIA
-
LAS
1 stop20h 04m
Multiple Airlines
Wed 2/41:53 pm
LAS
-
MIA
2 stops17h 38m
Multiple Airlines
Deal found 1/14$187
This Cheapflightsfares deal was found by Cheapflights users on 1/14. 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.
Wed 2/41:01 pm
MIA
-
LAS
1 stop13h 00m
Spirit Airlines
Fri 2/610:23 am
LAS
-
MIA
1 stop6h 23m
Spirit Airlines
Deal found 1/14$188
This Cheapflightsfares deal was found by Cheapflights users on 1/14. 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.
Thu 1/291:00 pm
MIA
-
LAS
1 stop9h 57m
Frontier
Mon 2/26:00 am
LAS
-
MIA
1 stop7h 37m
Frontier
Deal found 1/14$189
This Mytrip deal was found by Cheapflights users on 1/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/36:45 am
MIA
-
LAS
2 stops19h 59m
Spirit Airlines
Tue 2/107:07 am
LAS
-
MIA
2 stops25h 49m
Spirit Airlines
Deal found 1/14$190
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 4/108:35 pm
MIA
-
LAS
1 stop20h 44m
Multiple Airlines
Mon 4/1312:41 pm
LAS
-
MIA
1 stop9h 08m
Multiple Airlines
Deal found 1/14$191
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/86:45 am
MIA
-
LAS
2 stops43h 18m
Multiple Airlines
Wed 2/1112:59 am
LAS
-
MIA
1 stop10h 57m
Multiple Airlines
Deal found 1/15$192
This Southwest deal was found by Cheapflights users on 1/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/109:00 am
MIA
-
LAS
1 stop8h 15m
Southwest
Tue 2/1711:45 pm
LAS
-
MIA
1 stop9h 20m
Southwest
Deal found 1/15$193
This Kiwi.com deal was found by Cheapflights users on 1/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/68:36 pm
MIA
-
LAS
2 stops30h 23m
Frontier
Tue 2/1011:41 pm
LAS
-
MIA
1 stop8h 29m
Frontier
Deal found 1/13$194
This Cheapflightsfares deal was found by Cheapflights users on 1/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/169:53 pm
MIA
-
LAS
1 stop14h 31m
Spirit Airlines
Wed 2/1810:21 am
LAS
-
MIA
1 stop7h 30m
Spirit Airlines
Deal found 1/15$195
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:18 pm
MIA
-
LAS
1 stop29h 26m
Multiple Airlines
Tue 3/311:30 am
LAS
-
MIA
2 stops14h 44m
Multiple Airlines
Deal found 1/15$196
This Mytrip deal was found by Cheapflights users on 1/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/316:02 am
MIA
-
LAS
2 stops17h 56m
Spirit Airlines
Tue 2/39:35 pm
LAS
-
MIA
2 stops14h 43m
Spirit Airlines
Deal found 1/14$197
This Cheapflightsfares deal was found by Cheapflights users on 1/14. 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 2/612:11 pm
MIA
-
LAS
1 stop13h 46m
Frontier
Fri 2/2012:59 am
LAS
-
MIA
1 stop25h 15m
Frontier
Deal found 1/14$198

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 January 15, 2026.
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

Tue 2/17

6:25 am-11:42 am

1 stop8h 17m

Las Vegas Harry Reid Intl

Thu 2/19

4:10 pm-10:28 am

2 stops39h 18m

$208

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 4/9

12:55 pm-8:56 pm

1 stop11h 01m

Las Vegas Harry Reid Intl

Sat 4/11

12:59 am-11:49 am

1 stop7h 50m

$215

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Fri 2/20

5:05 am-10:50 pm

1 stop20h 45m

Las Vegas Harry Reid Intl

Mon 2/23

7:00 am-6:06 pm

1 stop8h 06m

$227

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Fri 2/13

11:35 am-10:50 pm

1 stop14h 15m

Las Vegas Harry Reid Intl

Tue 2/17

12:59 am-5:14 am

1 stop25h 15m

$243

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 1/28

1:05 pm-5:51 pm

1 stop7h 46m

Las Vegas Harry Reid Intl

Sat 1/31

12:59 am-10:54 am

1 stop6h 55m

$247

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 3/19

2:00 pm-9:45 pm

1 stop10h 45m

Las Vegas Harry Reid Intl

Sat 3/28

6:25 am-7:05 pm

1 stop9h 40m

$262

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 3/12

6:27 pm-11:35 pm

1 stop8h 08m

Las Vegas Harry Reid Intl

Sun 3/15

10:33 pm-10:35 am

1 stop9h 02m

$267

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 3/12

6:27 pm-11:35 pm

1 stop8h 08m

Las Vegas Harry Reid Intl

Mon 3/16

10:33 pm-10:35 am

1 stop9h 02m

$267

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Tue 2/10

7:55 am-5:10 pm

2 stops12h 15m

Las Vegas Harry Reid Intl

Tue 2/17

11:10 am-9:55 pm

2 stops7h 45m

$274

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Fri 3/27

9:45 pm-8:44 am

1 stop13h 59m

Las Vegas Harry Reid Intl

Wed 4/1

9:45 pm-3:24 pm

1 stop14h 39m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 24 results
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2
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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 January 9, 2026.

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 January 15, 2026.

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 afternoon tend to be the most expensive. A flight at noon could potentially save you up to 47% 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 January 10, 2026.

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 January 15, 2026.

The most flights from KE9 to LAS are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, 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 January 15, 2026.
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
8,051 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
8,051 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
11,136 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
2,887 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
8,322 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
5.7
Fair
3,057 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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 53 times in the past calendar month.

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

    Airlines like Frontier and United Airlines fly from Key Largo to Las Vegas in about 7h 46m. The time it takes to get you to your destination can typically vary by up to 31m. 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 cheapest airlines to fly from Key Largo to Las Vegas one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $56. Frontier flights start at $70 while deals on Southwest start at $86 one-way.

  • 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 (86%), Volaris (86%), GOL (81%).

  • 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 $945, our data indicates the cheapest price to be $116. The most popular route (Miami - Las Vegas Harry Reid Intl), is priced around $124.

  • 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
North Las Vegas
Kingman
Winchester
Primm
Sunrise Manor
Mesquite
Boulder City
Needles

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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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$246FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$89Average$212FlexibilityNo cancel feeOn-time65%
DeltaCheapest$128Average$322FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$144Average$364FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$178Average$326FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$178Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$192Average$324FlexibilityNo cancel feeOn-time69%

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