Las Vegas

$77+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LAS
Oct 15 — Oct 221
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to Las Vegas 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 Key Largo to Las Vegas Harry Reid Intl are usually found in January or February, booked 26 days in advance, depart on a Saturday or Friday 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 September 15, 2025.

Round-trip from

$160
(Mytrip)

One-way from

$77
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$329
From Key Largo to Las Vegas Harry Reid Intl
One-way flight from Key Largo to Las Vegas Harry Reid Intl
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in September 2025

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 September 15, 2025.

This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:00 amMIA - LAS
1 stop20h 29mFrontier
Thu 11/611:11 amLAS - MIA
1 stop24h 12mFrontier
Deal found 9/15$160
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.
Sun 9/286:00 amMIA - LAS
1 stop29h 02mFrontier
Thu 10/210:41 amLAS - MIA
1 stop24h 50mFrontier
Deal found 9/14$161
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Sat 10/186:00 amMIA - LAS
1 stop20h 29mFrontier
Fri 10/2412:59 amLAS - MIA
1 stop12h 15mFrontier
Deal found 9/15$162
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 11/143:47 pmMIA - LAS
Nonstop5h 29mSpirit Airlines
Mon 11/177:00 amLAS - MIA
Nonstop4h 42mSpirit Airlines
Deal found 9/14$163
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:51 pmMIA - LAS
1 stop28h 03mFrontier
Sat 10/412:59 amLAS - MIA
1 stop20h 45mFrontier
Deal found 9/13$165
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:05 amMIA - LAS
1 stop9h 29mFrontier
Wed 11/512:59 amLAS - MIA
1 stop26h 20mFrontier
Deal found 9/15$166
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/37:25 amMIA - LAS
1 stop9h 20mFrontier
Wed 11/128:00 amLAS - MIA
1 stop10h 22mFrontier
Deal found 9/14$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.
Tue 10/74:05 pmMIA - LAS
1 stop7h 42mFrontier
Fri 10/1010:56 pmLAS - MIA
1 stop19h 23mFrontier
Deal found 9/14$168
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 11/143:47 pmMIA - LAS
Nonstop5h 29mSpirit Airlines
Mon 11/1712:15 amLAS - MIA
1 stop7h 22mSpirit Airlines
Deal found 9/14$169
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:00 amMIA - LAS
1 stop12h 46mFrontier
Wed 11/198:00 amLAS - MIA
1 stop9h 58mFrontier
Deal found 9/14$170
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:05 amMIA - LAS
1 stop9h 29mFrontier
Wed 11/128:00 amLAS - MIA
1 stop10h 22mFrontier
Deal found 9/14$171

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 September 15, 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

Tue 10/14

3:15 pm-8:00 pm

1 stop7h 45m

Las Vegas Harry Reid Intl

Tue 10/21

11:05 am-10:15 pm

1 stop8h 10m

$193

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 10/15

4:35 pm-10:05 pm

1 stop8h 30m

Las Vegas Harry Reid Intl

Mon 10/20

11:35 pm-2:30 pm

1 stop11h 55m

$198

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 12/3

11:40 am-6:40 pm

2 stops10h 00m

Las Vegas Harry Reid Intl

Sat 12/6

11:40 pm-11:50 am

1 stop9h 10m

$198

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Sat 10/4

5:36 pm-10:19 pm

1 stop7h 43m

Las Vegas Harry Reid Intl

Mon 10/6

12:45 am-11:04 am

1 stop7h 19m

$267

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 10/1

6:30 pm-11:29 pm

1 stop7h 59m

Las Vegas Harry Reid Intl

Sat 10/4

11:35 am-9:23 pm

1 stop6h 48m

$267

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Wed 10/29

8:11 am-12:11 pm

1 stop7h 00m

Las Vegas Harry Reid Intl

Sun 11/2

5:05 am-4:30 pm

1 stop8h 25m

$277

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Thu 10/2

6:30 pm-11:29 pm

1 stop7h 59m

Las Vegas Harry Reid Intl

Mon 10/6

12:45 am-11:04 am

1 stop7h 19m

$277

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Fri 10/24

6:45 pm-11:30 pm

1 stop7h 45m

Las Vegas Harry Reid Intl

Tue 10/28

9:53 am-9:27 pm

1 stop8h 34m

$277

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Mon 11/24

3:40 pm-9:28 pm

1 stop8h 48m

Las Vegas Harry Reid Intl

Thu 11/27

6:00 am-5:20 pm

1 stop8h 20m

$277

MiamiLas Vegas

MIA - LAS

MIALAS

Miami

Sat 11/1

7:36 am-12:54 pm

1 stop8h 18m

Las Vegas Harry Reid Intl

Mon 11/3

12:35 am-1:28 pm

1 stop9h 53m

$296

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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 September 12, 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 26 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, August is the cheapest month in which you can book a flight from Key Largo to Las Vegas (average of $198). Flying from Key Largo to Las Vegas in March is currently the most expensive (average of $269). 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to Las Vegas as you normally would.

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 Tuesday evenings 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 September 15, 2025.

The most flights from KE9 to LAS are scheduled on a Thursday (12 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (10 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 September 15, 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.
8.0
Very good

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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.
8.0
Very good
8.0
Very good

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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.
8.0
Very good

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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.
8.0
Very good

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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.
8.0
Very good

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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.
8.0
Very good

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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?

  • 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 43m. The time it takes to get you to your destination can typically vary by up to 02m. 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%), Spirit Airlines (80%), American Airlines (63%).

  • 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 $625, our data indicates the cheapest price to be $76. The most popular route (Miami - Las Vegas Harry Reid Intl), is priced around $143.

  • 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, August is the cheapest month in which you can book a flight from Key Largo to Las Vegas (average of $198). Flying from Key Largo to Las Vegas in March is currently the most expensive (average of $269). 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
Sunrise Manor
Winchester
Kingman
Primm
Mount Charleston
Mesquite
Needles
Boulder City

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 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$116Average$216FlexibilityNo cancel feeOn-time65%
FrontierCheapest$126Average$190FlexibilityNo cancel feeOn-time62%
DeltaCheapest$139Average$329FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$159Average$388FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$179Average$367FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$184Average$365FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$350FlexibilityNo 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.