HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$102+ Cheap flights from Atlantic City (ACY) to Key Largo, FL

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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ACY — MIA
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Atlantic City to Key Largo 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.

Cheap flight deals from Atlantic City to Key Largo

Cheapest flights from Atlantic City to Key Largo
Explore the most affordable flight options available from Atlantic City to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 2, 2026.

This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sun 5/107:12 pm
ACY
-
MIA
2 stops21h 58m
Spirit Airlines
Fri 5/159:33 am
MIA
-
ACY
2 stops25h 17m
Spirit Airlines
Deal found 4/29$254
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/237:12 pm
ACY
-
MIA
2 stops21h 58m
Spirit Airlines
Mon 6/19:33 am
MIA
-
ACY
2 stops27h 55m
Spirit Airlines
Deal found 4/30$255
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Thu 7/26:20 pm
ACY
-
MIA
1 stop26h 08m
Multiple Airlines
Tue 7/73:39 pm
MIA
-
ACY
2 stops31h 36m
Multiple Airlines
Deal found 4/29$262
This Mytrip deal was found by Cheapflights users on 4/29. 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 6/37:50 pm
ACY
-
MIA
2 stops19h 04m
Spirit Airlines
Fri 6/59:33 am
MIA
-
ACY
2 stops25h 55m
Spirit Airlines
Deal found 4/29$281
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 7/266:20 pm
ACY
-
MIA
1 stop26h 10m
Multiple Airlines
Thu 8/65:28 pm
MIA
-
ACY
2 stops41h 54m
Multiple Airlines
Deal found 4/30$284
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:10 am
ACY
-
MIA
2 stops16h 10m
Spirit Airlines
Tue 6/234:15 pm
MIA
-
ACY
2 stops31h 00m
Spirit Airlines
Deal found 4/29$297
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/216:20 pm
ACY
-
MIA
1 stop26h 18m
Multiple Airlines
Fri 6/268:30 am
MIA
-
ACY
2 stops26h 42m
Multiple Airlines
Deal found 4/27$298
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/286:20 pm
ACY
-
MIA
1 stop26h 18m
Multiple Airlines
Fri 7/32:54 pm
MIA
-
ACY
2 stops20h 18m
Multiple Airlines
Deal found 4/29$310
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:20 am
ACY
-
MIA
2 stops23h 09m
Spirit Airlines
Tue 9/18:55 pm
MIA
-
ACY
2 stops26h 20m
Spirit Airlines
Deal found 4/28$314

Find flight deals from Atlantic City to Key Largo

Keep the following information in mind while searching for Atlantic City to Key Largo flight deals. Data was last updated May 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(Mytrip)

One-way from

$102
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$292
Provider with most accurate pricing for Philadelphia-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Miami flights.
Search Deals
From Atlantic City to Key Largo
Search Deals
One-way flight from Atlantic City to Key Largo
Search Deals
Highest demand for flights based on searches. 35% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 20% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Atlantic City to Key Largo 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 May 2, 2026.
Use the filters below to find and compare flights from Atlantic City to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Tue 5/26

7:12 pm-7:48 pm

3 stops24h 36m

Miami

Thu 5/28

9:33 am-10:50 am

2 stops25h 17m

$359

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Fri 6/5

7:15 am-8:28 am

2 stops25h 13m

Miami

Sun 6/7

9:33 am-1:28 pm

3 stops27h 55m

$362

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Mon 6/22

7:10 am-9:29 am

2 stops26h 19m

Miami

Fri 6/26

3:20 pm-11:20 pm

2 stops32h 00m

$373

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Sun 6/21

7:10 am-9:29 am

2 stops26h 19m

Miami

Fri 6/26

9:05 pm-11:15 pm

2 stops26h 10m

$389

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Thu 6/25

7:10 am-3:02 pm

2 stops31h 52m

Miami

Sun 6/28

9:05 pm-11:15 pm

2 stops26h 10m

$399

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Thu 5/28

7:12 pm-2:54 pm

2 stops19h 42m

Miami

Sun 5/31

11:06 am-3:28 pm

3 stops28h 22m

$417

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Fri 5/15

6:56 am-8:27 am

3 stops25h 31m

Miami

Sun 5/17

9:33 am-10:50 am

3 stops25h 17m

$418

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Thu 7/30

9:22 am-9:29 am

2 stops24h 07m

Miami

Mon 8/3

3:58 pm-11:15 pm

2 stops31h 17m

$428

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Fri 6/12

6:56 am-1:04 pm

3 stops30h 08m

Miami

Fri 6/19

3:58 pm-11:15 pm

2 stops31h 17m

$428
Quickest round-trip

Atlantic CityMiami

ACY - MIA

ACYMIA

Atlantic City

Sun 8/23

10:20 am-1:29 pm

2 stops27h 09m

Miami

Sun 8/30

5:05 am-5:30 pm

1 stop12h 25m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Atlantic City to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Atlantic City 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 Atlantic City to Key Largo

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

Find hourly flight availability from Atlantic City to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 2, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 39% 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?

Use this chart to determine the cheapest time to fly round-trip from Atlantic City to Key Largo. Price data was last updated on April 25, 2026.

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

How much does it cost to fly round-trip from Atlantic City to Key Largo?

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated May 2, 2026.
See what other customers who have flown with Allegiant Air,American Airlines, andSpirit Airlines 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
707 reviews

Food

5.8

Comfort

6.9

Crew

8.1

Overall

7.3

Boarding

7.6

Entertainment

5.4

Reviews

1 / 20
2.0
Mediocre

larry,Apr 2026

PSC - SNA

After waiting more than 6 hours our flight was delayed until the next day. The flight was extremely uncomfortable. Like riding on hard plastic lawn chairs in the sky.
Allegiant Air
7.3
Good
707 reviews
Allegiant Air
7.3
Good
707 reviews

Food

5.8

Comfort

6.9

Crew

8.1

Overall

7.3

Boarding

7.6

Entertainment

5.4

Reviews

1 / 20
2.0
Mediocre

larry,Apr 2026

PSC - SNA

After waiting more than 6 hours our flight was delayed until the next day. The flight was extremely uncomfortable. Like riding on hard plastic lawn chairs in the sky.
American Airlines
7.1
Good
11,679 reviews
Allegiant Air
7.3
Good
707 reviews

Food

5.8

Comfort

6.9

Crew

8.1

Overall

7.3

Boarding

7.6

Entertainment

5.4

Reviews

1 / 20
2.0
Mediocre

larry,Apr 2026

PSC - SNA

After waiting more than 6 hours our flight was delayed until the next day. The flight was extremely uncomfortable. Like riding on hard plastic lawn chairs in the sky.
Spirit Airlines
6.3
Okay
8,641 reviews
Allegiant Air
7.3
Good
707 reviews

Food

5.8

Comfort

6.9

Crew

8.1

Overall

7.3

Boarding

7.6

Entertainment

5.4

Reviews

1 / 20
2.0
Mediocre

larry,Apr 2026

PSC - SNA

After waiting more than 6 hours our flight was delayed until the next day. The flight was extremely uncomfortable. Like riding on hard plastic lawn chairs in the sky.
Frontier
5.7
Fair
2,971 reviews
Allegiant Air
7.3
Good
707 reviews

Food

5.8

Comfort

6.9

Crew

8.1

Overall

7.3

Boarding

7.6

Entertainment

5.4

Reviews

1 / 20
2.0
Mediocre

larry,Apr 2026

PSC - SNA

After waiting more than 6 hours our flight was delayed until the next day. The flight was extremely uncomfortable. Like riding on hard plastic lawn chairs in the sky.

Related info for your journey

Find useful and relevant information for your journey from Atlantic City to Key Largo. 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 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 4 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.

  • How long is the flight from Atlantic City to Key Largo?

    For as low as $359, Spirit Airlines can have you in Key Largo from Atlantic City in 24h 36m. The distance from Atlantic City to Key Largo is about 999 mi.

  • 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 $281.

  • 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

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.

Alternative routes for Atlantic City to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Fort Lauderdale flights
Newark to Fort Lauderdale flights
LaGuardia to Miami flights
Newark to Miami flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to West Palm Beach flights
Newark to Orlando flights
LaGuardia to Orlando flights
Newark to Tampa flights
Newark to West Palm Beach flights
LaGuardia to Tampa flights
Philadelphia to Orlando flights
John F Kennedy Intl to Tampa flights
LaGuardia to West Palm Beach flights
Philadelphia to Fort Lauderdale flights
Philadelphia to Miami flights
Newark to Jacksonville flights
Philadelphia to Tampa flights
Newark to Fort Myers flights
Atlantic City to Orlando flights
Newark to Sarasota flights
John F Kennedy Intl to Fort Myers flights
John F Kennedy Intl to Sarasota flights
LaGuardia to Fort Myers flights
LaGuardia to Sarasota flights
LaGuardia to Jacksonville flights
John F Kennedy Intl to Jacksonville flights
Atlantic City to Fort Lauderdale flights
Newark to Key West flights
Trenton to Orlando flights
John F Kennedy Intl to Daytona Beach flights
Atlantic City to West Palm Beach flights
Philadelphia to Jacksonville flights
LaGuardia to Pensacola flights
John F Kennedy Intl to Key West flights
Atlantic City to Tampa flights
Philadelphia to West Palm Beach flights
Philadelphia to Sarasota flights
Philadelphia to Key West flights
LaGuardia to Panama City flights
Philadelphia to Fort Myers flights
Newark to Daytona Beach flights
Newark to Pensacola flights
Philadelphia to Daytona Beach flights
John F Kennedy Intl to Panama City flights
Newark to Melbourne flights
John F Kennedy Intl to Pensacola flights
Newark to Panama City flights

Top 4 airlines flying from Atlantic City to Key Largo

Discover the top 4 airlines that operate flights from Atlantic City to Key Largo. 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 May 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$38Average$103FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$69Average$171FlexibilityNo cancel feeOn-time65%
FrontierCheapest$70Average$142FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$206Average$372FlexibilityNo cancel feeOn-time71%

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.