HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$99+ Cheap flights from Allentown (ABE) 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — MIA
nov. 13 — nov. 201
jue. 11/13
jue. 11/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown 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.

Cheapflights Tip: The best prices from Allentown-Bethlehem to Key Largo are usually found in May or November, booked 45 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Allentown to Key Largo

Keep the following information in mind while searching for Allentown to Key Largo flight deals. Data was last updated octubre 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$167
(American Airlines)

One-way from

$99
(Delta)

Popular in

April

Cheapest in

May

Average price

$453
Provider with most accurate pricing for Allentown-Bethlehem-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-Miami flights.
Search Deals
From Allentown-Bethlehem to Key Largo
Search Deals
One-way flight from Allentown-Bethlehem to Key Largo
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Allentown to Key Largo

Cheapest flights from Allentown to Key Largo
Explore the most affordable flight options available from Allentown to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 14, 2025.

This American Airlines deal was found by Cheapflights users on 10/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/85:10 pmABE - MIA
1 stop5h 27mAmerican Airlines
mar. 11/115:45 amMIA - ABE
1 stop7h 30mAmerican Airlines
Deal found 10/12$189
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/116:00 pmABE - MIA
1 stop6h 46mDelta
mar. 11/184:52 pmMIA - ABE
1 stop5h 20mDelta
Deal found 10/12$197
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/286:00 pmABE - MIA
1 stop6h 29mDelta
mar. 11/46:00 amMIA - ABE
1 stop6h 06mDelta
Deal found 10/13$213
This American Airlines deal was found by Cheapflights users on 10/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/115:14 pmABE - MIA
1 stop5h 19mAmerican Airlines
lun. 12/155:45 amMIA - ABE
1 stop7h 33mAmerican Airlines
Deal found 10/12$221
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/286:00 pmABE - MIA
1 stop6h 29mDelta
mié. 10/297:10 amMIA - ABE
1 stop4h 56mDelta
Deal found 10/13$247
This American Airlines deal was found by Cheapflights users on 10/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/104:30 pmABE - MIA
1 stop5h 48mAmerican Airlines
sáb. 12/139:30 amMIA - ABE
1 stop7h 14mAmerican Airlines
Deal found 10/12$249
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/256:00 pmABE - MIA
1 stop6h 29mDelta
mié. 10/297:10 amMIA - ABE
1 stop4h 56mDelta
Deal found 10/13$252
This American Airlines deal was found by Cheapflights users on 10/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/46:10 amABE - MIA
1 stop7h 01mAmerican Airlines
jue. 12/44:34 pmMIA - ABE
2 stops6h 32mAmerican Airlines
Deal found 10/13$253
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
dom. 10/2612:14 pmABE - MIA
1 stop23h 31mMultiple Airlines
jue. 10/307:38 pmMIA - ABE
2 stops45h 07mMultiple Airlines
Deal found 10/13$255
This American Airlines deal was found by Cheapflights users on 10/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/265:53 pmABE - MIA
1 stop5h 16mAmerican Airlines
mar. 10/288:23 amMIA - ABE
1 stop5h 50mAmerican Airlines
Deal found 10/13$272

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown 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 octubre 14, 2025.
Use the filters below to find and compare flights from Allentown to Key Largo that are best for you.

Fly from

Allentown

Fly to

Key Largo

Route

Depart

Return

Price

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

mar. 10/28

6:00 pm-12:29 am

1 stop6h 29m

Miami

mar. 11/4

7:10 am-12:06 pm

1 stop4h 56m

$213

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

sáb. 12/6

6:00 pm-12:46 am

1 stop6h 46m

Miami

sáb. 12/13

7:00 am-12:14 pm

1 stop5h 14m

$298

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

vie. 12/5

3:46 pm-11:57 pm

3 stops32h 11m

Miami

lun. 12/8

6:05 am-10:24 pm

2 stops16h 19m

$356

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

jue. 10/23

6:00 am-11:04 am

1 stop5h 04m

Miami

mié. 10/29

7:10 am-12:06 pm

1 stop4h 56m

$383

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

dom. 3/8

6:44 am-1:00 pm

1 stop6h 16m

Miami

mar. 3/10

9:00 am-5:01 pm

1 stop8h 01m

$405

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

mié. 1/21

4:57 pm-3:40 pm

2 stops22h 43m

Miami

mar. 1/27

9:00 am-4:22 pm

1 stop7h 22m

$406

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

lun. 12/22

2:30 pm-10:15 pm

1 stop7h 45m

Miami

lun. 12/29

9:00 am-4:30 pm

1 stop7h 30m

$461

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

dom. 11/2

5:32 am-1:51 pm

1 stop8h 19m

Miami

mié. 2/11

9:00 am-4:22 pm

1 stop7h 22m

$463

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

vie. 4/3

5:40 pm-12:57 am

1 stop7h 17m

Miami

mar. 4/7

3:35 pm-10:52 pm

1 stop7h 17m

$465

AllentownMiami

ABE - MIA

ABEMIA

Allentown-Bethlehem

vie. 1/16

4:57 pm-10:35 pm

2 stops29h 38m

Miami

mar. 1/20

9:00 am-4:22 pm

1 stop7h 22m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 19 results
1
2

Best time to book a flight from Allentown to Key Largo

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

How far ahead should I book a flight from Allentown to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Allentown to Key Largo. Price data was last updated on October 10, 2025.

To ensure you get the cheapest price possible for a flight from Allentown to Key Largo, you should look to book at least 45 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 Allentown to Key Largo?

Currently, December is the cheapest month in which you can book a flight from Allentown to Key Largo (average of $26). Flying from Allentown to Key Largo in June is currently the most expensive (average of $86). 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 ABE to KE9?

Find hourly flight availability from Allentown 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 octubre 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Allentown to Key Largo at noon. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Allentown to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Allentown to Key Largo. Price data was last updated on December 16, 2024.

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

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 octubre 14, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Allentown 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.
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
8,973 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.2
Good
11,043 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Allegiant Air
7.2
Good
693 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Frontier
5.8
Fair
3,135 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from Allentown 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 Allentown to Key Largo?

    Allentown-Bethlehem (ABE) is the airport you will fly out of if you book a flight from Allentown to Key Largo. You should not have trouble finding flights to Key Largo from Allentown-Bethlehem; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Allentown airport to Key Largo. It is only a 3.9 mi journey to Allentown-Bethlehem (ABE) from Allentown’s city center.

  • How long is the flight from Allentown to Key Largo?

    Departing from Allentown to Key Largo will take you 6h 29m. Allentown and Key Largo are separated by a distance of 1063 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Allentown 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.

  • What is the cheapest month to book a flight from Allentown to Key Largo?

    Currently, December is the cheapest month in which you can book a flight from Allentown to Key Largo (average of $26). Flying from Allentown to Key Largo in June is currently the most expensive (average of $86). 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

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 Allentown to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to Miami flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Fort Lauderdale flights
LaGuardia to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Miami flights
Newark to Orlando flights
John F Kennedy Intl to Tampa flights
LaGuardia to Orlando flights
Philadelphia to Orlando flights
John F Kennedy Intl to West Palm Beach flights
Reagan-National to Miami flights
Dulles Intl to Orlando flights
LaGuardia to Tampa flights
Newark to Tampa flights
Dulles Intl to Miami flights
Reagan-National to Orlando flights
Newark to West Palm Beach flights
Philadelphia to Miami flights
LaGuardia to West Palm Beach flights
Philadelphia to Fort Lauderdale flights
Dulles Intl to Fort Lauderdale flights
Newark to Fort Myers flights
Dulles Intl to Tampa flights
John F Kennedy Intl to Fort Myers flights
Reagan-National to Fort Lauderdale flights
Philadelphia to Tampa flights
John F Kennedy Intl to Sarasota flights
Reagan-National to Tampa flights
Pittsburgh to Orlando flights
Newark to Sarasota flights
Newark to Key West flights
John F Kennedy Intl to Jacksonville flights
LaGuardia to Fort Myers flights
Reagan-National to West Palm Beach flights
LaGuardia to Jacksonville flights
LaGuardia to Sarasota flights
Newark to Jacksonville flights
Dulles Intl to Fort Myers flights
Philadelphia to Fort Myers flights
Pittsburgh to Miami flights
Pittsburgh to Fort Lauderdale flights
Philadelphia to West Palm Beach flights
Dulles Intl to West Palm Beach flights
John F Kennedy Intl to Key West flights
Reagan-National to Fort Myers flights
Dulles Intl to Jacksonville flights
Dulles Intl to Key West flights
Philadelphia to Key West flights

Top 6 airlines flying from Allentown to Key Largo

Discover the top 6 airlines that operate flights from Allentown 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 octubre 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$47Average$131FlexibilityNo cancel feeOn-time65%
FrontierCheapest$49Average$130FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$57Average$184FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$177Average$405FlexibilityNo cancel feeOn-time71%
DeltaCheapest$209Average$470FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$358FlexibilityNo 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.