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$239+ Cheap flights from Louisville to Allentown (SDF - ABE)

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ABE
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap 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 septiembre 11, 2025.

Round-trip from

$499
(Delta)

One-way from

$239
(Delta)

Popular in

December

Cheapest in

July

Average price

$293
From Louisville Intl to Allentown-Bethlehem
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One-way flight from Louisville Intl to Allentown-Bethlehem
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Highest demand for flights based on searches. 19% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 11, 2025.

This Delta deal was found by Cheapflights users on 9/9. 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.
vie. 9/195:53 pmSDF - ABE
1 stop4h 48mDelta
dom. 9/216:00 amABE - SDF
1 stop5h 43mDelta
Deal found 9/9$439
This Delta deal was found by Cheapflights users on 9/9. 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.
jue. 10/25:53 pmSDF - ABE
1 stop4h 48mDelta
mié. 10/86:00 pmABE - SDF
1 stop6h 01mDelta
Deal found 9/9$499
This Delta deal was found by Cheapflights users on 9/10. 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.
vie. 10/105:58 pmSDF - ABE
1 stop4h 17mDelta
lun. 10/136:00 pmABE - SDF
1 stop6h 01mDelta
Deal found 9/10$809
This United Airlines deal was found by Cheapflights users on 9/9. 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.
vie. 9/191:00 pmSDF - ABE
2 stops21h 37mUnited Airlines
dom. 9/216:37 amABE - SDF
1 stop6h 40mUnited Airlines
Deal found 9/9$816
This American Airlines deal was found by Cheapflights users on 9/9. 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.
vie. 12/269:20 amSDF - ABE
1 stop7h 13mAmerican Airlines
mar. 12/305:15 pmABE - SDF
1 stop7h 01mAmerican Airlines
Deal found 9/9$887
This United Airlines deal was found by Cheapflights users on 9/9. 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.
vie. 12/269:05 amSDF - ABE
1 stop7h 25mUnited Airlines
mar. 12/305:07 pmABE - SDF
2 stops26h 04mUnited Airlines
Deal found 9/9$1,037
This Delta deal was found by Cheapflights users on 9/10. 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.
lun. 9/155:53 pmSDF - ABE
1 stop4h 48mDelta
mar. 9/166:12 pmABE - SDF
1 stop5h 40mDelta
Deal found 9/10$1,090
This United Airlines deal was found by Cheapflights users on 9/10. 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.
lun. 9/153:35 pmSDF - ABE
2 stops20h 23mUnited Airlines
mar. 9/165:28 pmABE - SDF
1 stop4h 56mUnited Airlines
Deal found 9/10$1,389

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 septiembre 11, 2025.
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

jue. 10/2

5:53 pm-10:41 pm

1 stop4h 48m

Allentown-Bethlehem

mié. 10/8

6:00 pm-12:01 am

1 stop6h 01m

$499

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

vie. 10/10

5:58 pm-10:15 pm

1 stop4h 17m

Allentown-Bethlehem

lun. 10/13

6:00 pm-12:01 am

1 stop6h 01m

$809

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

vie. 12/26

9:20 am-4:33 pm

1 stop7h 13m

Allentown-Bethlehem

mar. 12/30

5:15 pm-12:16 am

1 stop7h 01m

$887

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

vie. 12/26

9:05 am-4:30 pm

1 stop7h 25m

Allentown-Bethlehem

mar. 12/30

5:07 pm-7:11 pm

2 stops26h 04m

$1,037

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

sáb. 10/4

5:56 pm-10:22 pm

1 stop4h 26m

$239

LouisvilleAllentown

SDF - ABE

SDFABE

Louisville Intl

jue. 9/25

7:10 am-12:04 pm

1 stop4h 54m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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, February is the cheapest month in which you can book a flight from Louisville to Allentown (average of $289). Flying from Louisville to Allentown in December is currently the most expensive (average of $382). 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.

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 septiembre 11, 2025.
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
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 4h 48m. Fly via Delta, American Airlines, or United Airlines 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 $238, 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 38% 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, February is the cheapest month in which you can book a flight from Louisville to Allentown (average of $289). Flying from Louisville to Allentown in December is currently the most expensive (average of $382). 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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Other flights to Allentown

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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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$238Average$408FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$273Average$385FlexibilityNo cancel feeOn-time69%

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