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Key Largo

Cheap flights from Atlantic City (ACY) to Key Largo, FL

ACY — MIA
Dec 5 — Dec 121
Sat 12/5
Sat 12/12
1 adult, Economy
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Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

March

Average price

$273
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Highest demand for flights based on searches. 20% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Cheapflights Insights

Everything you need to know about your flight from Atlantic City to Key Largo

What is the cheapest time of day to fly from ACY to KE9?

Unlike in the morning, when flights are generally more expensive, you can save up to 15% on flights from Atlantic City to Key Largo by exploring options for tickets at noon.

What is the cheapest day to fly from Atlantic City to Key Largo?

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

Reviews of airlines servicing Key Largo

See what other customers who have flown with Allegiant Air,American Airlines, andFrontier from Atlantic City to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Allegiant Air
7.3
Good
678 reviews

Boarding

7.7

Food

5.9

Overall

7.3

Comfort

6.9

Crew

8.1

Entertainment

5.5

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.
Allegiant Air
7.3
Good
678 reviews
Allegiant Air
7.3
Good
678 reviews

Boarding

7.7

Food

5.9

Overall

7.3

Comfort

6.9

Crew

8.1

Entertainment

5.5

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.
American Airlines
7.0
Good
12,230 reviews
Allegiant Air
7.3
Good
678 reviews

Boarding

7.7

Food

5.9

Overall

7.3

Comfort

6.9

Crew

8.1

Entertainment

5.5

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.
Frontier
5.5
Fair
2,512 reviews
Allegiant Air
7.3
Good
678 reviews

Boarding

7.7

Food

5.9

Overall

7.3

Comfort

6.9

Crew

8.1

Entertainment

5.5

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.

Related info for your journey

  • What airport do you fly from for flights from Atlantic City to Key Largo?

    If you book a flight to Key Largo from Atlantic City, you will be flying from Atlantic City, which is the city’s only airport. Atlantic City (ACY) is located 10.5 mi from the center of Atlantic City. There are 0 flights from Atlantic City to Key Largo per day from 3 different airlines.

  • How popular is this Atlantic City to Key Largo flight route?

    This flight path from Atlantic City to Key Largo was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest flights from Atlantic City to Key Largo?

    On average you can expect to pay $148 for a flight from Atlantic City to Key Largo. The cheapest flight overall is $146 while the most popular route, (Atlantic City - Miami) is currently priced at $239.

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

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

  • How can I find direct flights from Atlantic City to Key Largo?

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

  • Can I find deals for business class flights from Atlantic City to Key Largo?

    Yes. Cheapflights offers flight deals from Atlantic City 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.

See more FAQs

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Top 3 airlines flying from Atlantic City to Key Largo

AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$38Average$139FlexibilityNo cancel feeOn-time88%
FrontierCheapest$86Average$187FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$139Average$521FlexibilityNo cancel feeOn-time71%

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