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$331+ Cheap flights from Louisville to Allentown (SDF - ABE)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ABE
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Louisville to Allentown

Cheapest flights from Louisville to Allentown
Explore the most affordable flight options available from Louisville to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/115:35 am
SDF
-
ABE
1 stop5h 06m
United Airlines
Sun 2/156:28 am
ABE
-
SDF
1 stop6h 55m
United Airlines
Deal found 1/27$331
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/145:35 am
SDF
-
ABE
1 stop6h 15m
United Airlines
Wed 2/185:23 pm
ABE
-
SDF
1 stop4h 50m
United Airlines
Deal found 1/26$344
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/307:00 am
SDF
-
ABE
1 stop5h 05m
Delta
Mon 2/25:59 pm
ABE
-
SDF
1 stop5h 51m
Delta
Deal found 1/28$413
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/123:33 pm
SDF
-
ABE
1 stop28h 47m
Multiple Airlines
Sun 3/1510:00 am
ABE
-
SDF
1 stop10h 50m
Multiple Airlines
Deal found 1/28$435
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:19 pm
SDF
-
ABE
1 stop14h 25m
Allegiant Air
Fri 6/2612:39 pm
ABE
-
SDF
1 stop23h 37m
Allegiant Air
Deal found 1/28$446
This Delta deal was found by Cheapflights users on 1/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/135:35 pm
SDF
-
ABE
1 stop5h 21m
Delta
Sun 3/155:58 pm
ABE
-
SDF
1 stop4h 45m
Delta
Deal found 1/27$463
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:03 pm
SDF
-
ABE
1 stop9h 12m
Multiple Airlines
Sun 3/1510:00 am
ABE
-
SDF
1 stop25h 08m
Multiple Airlines
Deal found 1/28$469
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 2/14:39 pm
SDF
-
ABE
1 stop28h 47m
Allegiant Air
Wed 2/44:05 pm
ABE
-
SDF
1 stop23h 44m
Allegiant Air
Deal found 1/29$473

Find flight deals from Louisville to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$331
(United Airlines)

Popular in

August

Cheapest in

November

Average price

$354
Provider with most accurate pricing for Louisville Intl-Allentown-Bethlehem flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Allentown-Bethlehem flights.
Search Deals
From Louisville Intl to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Allentown 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 29, 2026.
Use the filters below to find and compare flights from Louisville to Allentown that are best for you.

Fly from

Louisville

Fly to

Allentown

Route

Depart

Return

Price

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

Wed 2/11

5:35 am-10:41 am

1 stop5h 06m

Allentown-Bethlehem

Sun 2/15

6:28 am-1:23 pm

1 stop6h 55m

$331

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

Sat 2/14

5:35 am-11:50 am

1 stop6h 15m

Allentown-Bethlehem

Wed 2/18

5:23 pm-10:13 pm

1 stop4h 50m

$344

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

Fri 3/13

5:35 pm-10:56 pm

1 stop5h 21m

Allentown-Bethlehem

Sun 3/15

5:58 pm-10:43 pm

1 stop4h 45m

$463

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

Fri 3/13

12:03 pm-9:15 pm

1 stop9h 12m

Allentown-Bethlehem

Sun 3/15

10:00 am-11:08 am

1 stop25h 08m

$469

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

Thu 3/12

3:33 pm-2:37 pm

2 stops23h 04m

Allentown-Bethlehem

Sun 3/15

10:00 am-8:50 pm

1 stop10h 50m

$490

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

Mon 3/23

5:35 pm-10:56 pm

1 stop5h 21m

Allentown-Bethlehem

Wed 3/25

6:32 am-11:58 am

1 stop5h 26m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Compare providers for flights from Louisville to Allentown

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Allentown in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Louisville-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Allentown flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Louisville to Allentown

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

What is the cheapest month to book a flight from Louisville to Allentown?

Currently, May is the cheapest month in which you can book a flight from Louisville to Allentown (average of $71). Flying from Louisville to Allentown in January is currently the most expensive (average of $139). 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.

How much does it cost to fly round-trip from Louisville to Allentown?

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. 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 Allentown. Reviews last updated January 29, 2026.
See what other customers who have flown with Delta and United Airlines from Louisville to Allentown have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,127 reviews
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,214 reviews
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Louisville to Allentown?

    There are many flights that can get you from Louisville to Allentown in 5h 06m. Fly via United Airlines or Delta to get the fastest option. The distance from Louisville to Allentown is about 575 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 flying from Louisville to Allentown round-trip?

    Delta, at $248, was found to be the cheapest airline from Louisville to Allentown. An alternate airline flying to your destination would be United Airlines. Delta is priced at 36% lower than the current average price of a flight leaving 3 months from now.

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

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

  • How can I find direct flights from Louisville to Allentown?

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

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

    Yes. Cheapflights offers flight deals from Louisville to Allentown 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 Louisville to Allentown?

    Currently, May is the cheapest month in which you can book a flight from Louisville to Allentown (average of $71). Flying from Louisville to Allentown in January is currently the most expensive (average of $139). 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

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Top 2 airlines flying from Louisville to Allentown

Discover the top 2 airlines that operate flights from Louisville to Allentown. 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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$308FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$273Average$385FlexibilityNo cancel feeOn-time69%

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