How long is the flight from Louisville to Allentown?

There are many flights that can get you from Louisville to Allentown in 4h 10m. 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 is the cheapest airline to fly from Louisville to Allentown round-trip?

Delta, at $340, was found to be the cheapest airline from Louisville to Allentown.. Delta is priced at 30% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in Allentown ranges from 2.7 - 5.0 inches per month. July is typically the wettest month, when rainfall can reach 5.0 in. February is typically the driest time to visit Allentown when rainfall is around 2.7 in.

If weather is an important factor for your trip to Allentown, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

What is the cheapest time of day to fly from SDF to ABE?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Louisville to Allentown as you normally would.

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.

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.

$333+ Cheap Flights from Louisville to Allentown

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Louisville to Allentown 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 Louisville to Allentown

Cheapest

Best

Last-minute

One-way

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 October 27, 2026.

Thu 12/1010:25 am -

1 stop6h 32m

Tue 12/155:32 pm -

1 stop6h 17m

Deal found 10/24

$371

Fri 12/181:04 pm -

1 stop4h 10m

Sun 12/276:25 am -

1 stop5h 02m

Deal found 10/25

$411

Sun 11/158:37 pm -

1 stop23h 55m

Thu 11/198:00 am -

1 stop9h 36m

Deal found 10/26

$525

Sat 10/245:59 pm -

1 stop4h 20m

Sun 10/256:39 am -

1 stop6h 15m

Deal found 10/23

$533

Sun 11/159:09 pm -

2 stops25h 20m

Thu 11/198:00 am -

1 stop9h 36m

Deal found 10/26

$555

Sun 11/88:37 pm -

1 stop15h 08m

Thu 11/1210:33 am -

1 stop9h 08m

Deal found 10/24

$572

Sun 11/88:37 pm -

1 stop15h 08m

Thu 11/123:05 pm -

2 stops18h 40m

Deal found 10/24

$598

Wed 11/1110:37 am -

1 stop6h 19m

Thu 11/125:36 pm -

1 stop4h 54m

Deal found 10/27

$616

Mon 11/234:07 pm -

1 stop21h 30m

Sat 11/286:00 am -

1 stop14h 51m

Deal found 10/24

$650

Mon 11/2310:25 am -

2 stops30h 22m

Sat 11/286:00 am -

1 stop14h 51m

Deal found 10/24

$653

Thu 12/109:55 am -

2 stops23h 33m

Mon 12/145:32 pm -

1 stop6h 17m

Deal found 10/24

$708

Fri 12/186:47 pm -

1 stop5h 05m

Sun 12/277:10 am -

1 stop7h 14m

Deal found 10/26

$743

Best flights from Louisville to Allentown
Discover carefully curated flight deals from Louisville to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.

Thu 12/1010:25 am -

1 stop6h 32m

Mon 12/145:32 pm -

1 stop6h 17m

Deal found 10/24

$371

Fri 12/181:04 pm -

1 stop4h 10m

Sun 12/276:25 am -

1 stop5h 02m

Deal found 10/25

$411

Tue 1/123:29 pm -

1 stop5h 22m

Sat 1/1610:10 am -

1 stop8h 19m

Deal found 10/23

$459

Sat 1/910:20 am -

1 stop6h 25m

Tue 1/126:00 am -

1 stop7h 26m

Deal found 10/26

$459

Last-minute flights from Louisville to Allentown
Discover last-minute flight deals from Louisville to Allentown. Data last updated October 27, 2026 and is based on user searches.

Sun 11/88:37 pm -

1 stop15h 08m

Thu 11/1210:33 am -

1 stop9h 08m

Deal found 10/24

$572

Sun 11/88:37 pm -

1 stop15h 08m

Thu 11/123:05 pm -

2 stops18h 40m

Deal found 10/24

$598

Sun 11/82:10 pm -

1 stop6h 52m

Thu 11/125:36 pm -

3 stops20h 46m

Deal found 10/24

$1,086

Wed 11/1110:37 am -

1 stop6h 19m

Thu 11/125:36 pm -

1 stop4h 54m

Deal found 10/27

$616

Sun 11/158:37 pm -

1 stop23h 55m

Thu 11/198:00 am -

1 stop9h 36m

Deal found 10/26

$525

Sun 11/159:09 pm -

2 stops25h 20m

Thu 11/198:00 am -

1 stop9h 36m

Deal found 10/26

$555

Sun 11/156:00 am -

2 stops10h 56m

Thu 11/196:15 am -

2 stops15h 43m

Deal found 10/26

$1,229

Mon 11/234:07 pm -

1 stop21h 30m

Sat 11/286:00 am -

1 stop14h 51m

Deal found 10/24

$650

Mon 11/2310:25 am -

2 stops30h 22m

Sat 11/286:00 am -

1 stop14h 51m

Deal found 10/24

$653

Find flight deals from Louisville to Allentown

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$371 (United Airlines)
One-way from	$333 (Delta)
Popular in	December
Cheapest in	February
Average price	$649

Provider with most accurate pricing for Louisville Intl-Allentown-Bethlehem flight deals.

Search Deals

Provider most trusted by Cheapflights users for Louisville Intl-Allentown-Bethlehem flights.

Search Deals

From Louisville Intl to Allentown-Bethlehem

Search Deals

One-way flight from Louisville Intl to Allentown-Bethlehem

Search Deals

High demand for flights, 2% potential price rise

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Louisville to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Tue 11/17

7:05 am-12:04 pm

1 stop4h 59m

Allentown-Bethlehem

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$333

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Tue 11/17

9:17 am-4:56 pm

1 stop7h 39m

Allentown-Bethlehem

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$344

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Fri 12/18

11:48 am-11:52 pm

1 stop12h 04m

Allentown-Bethlehem

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$345

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Thu 12/10

10:25 am-4:57 pm

1 stop6h 32m

Allentown-Bethlehem

Mon 12/14

5:32 pm-11:49 pm

1 stop6h 17m

$371

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Fri 12/18

1:04 pm-5:14 pm

1 stop4h 10m

Allentown-Bethlehem

Sun 12/27

6:25 am-11:27 am

1 stop5h 02m

$411

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Tue 1/12

3:29 pm-8:51 pm

1 stop5h 22m

Allentown-Bethlehem

Sat 1/16

10:10 am-6:29 pm

1 stop8h 19m

$459

LouisvilleAllentown

SDF Louisville Intl - ABE Allentown-Bethlehem

SDFABE

Louisville Intl

Sat 1/9

10:20 am-4:45 pm

1 stop6h 25m

Allentown-Bethlehem

Tue 1/12

6:00 am-1:26 pm

1 stop7h 26m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Sorted by cheapest first

Compare providers for flights from Louisville to Allentown

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Allentown in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust 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.

SDF-ABE

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.

Reviews of airlines servicing Allentown

See what other customers who have flown with Delta 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

7.8

Good

8,681 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Delta

7.8

Good

8,681 reviews

Delta

7.8

Good

8,681 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Related info for your journey

How long is the flight from Louisville to Allentown?
There are many flights that can get you from Louisville to Allentown in 4h 10m. 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 is the cheapest airline to fly from Louisville to Allentown round-trip?
Delta, at $340, was found to be the cheapest airline from Louisville to Allentown.. Delta is priced at 30% 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Allentown flight routes

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Other flights from Louisville

Popular flights

Other flights to Allentown

Top airline flying from Louisville to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$340	Average$452	FlexibilityNo cancel fee	On-timeN/A

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.

$333+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Louisville to Allentown with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Louisville to Allentown

Cheapest flights from Louisville to AllentownExplore 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 October 27, 2026.

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 October 27, 2026.

Best flights from Louisville to AllentownDiscover carefully curated flight deals from Louisville to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.

Discover carefully curated flight deals from Louisville to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.

Last-minute flights from Louisville to AllentownDiscover last-minute flight deals from Louisville to Allentown. Data last updated October 27, 2026 and is based on user searches.

Discover last-minute flight deals from Louisville to Allentown. Data last updated October 27, 2026 and is based on user searches.

One-way flights from Louisville to AllentownSearch for one-way flight options from Louisville to Allentown. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.

Search for one-way flight options from Louisville to Allentown. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.

Find flight deals from Louisville to Allentown

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Louisville to Allentown that are best for you.

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 October.

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.

Reviews of airlines servicing Allentown

See what other customers who have flown with Delta 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.

Related info for your journey

How long is the flight from Louisville to Allentown?

What is the cheapest airline to fly from Louisville to Allentown round-trip?

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

How can I find direct flights from Louisville to Allentown?

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

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.

Other flights to Allentown

Explore flights to Allentown departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.

Alternative routes for Louisville to Allentown

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Allentown by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Louisville to Allentown by cabin class

Find flights from Louisville to Allentown, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Louisville and Allentown flights

Browse other Louisville and Allentown flight options. Last updated on October 27, 2026.

Other flights from Louisville

Browse through other flights departing from Louisville. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top airline flying from Louisville to Allentown

100% Free

Book with Flexibility

Travel Smart

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 October 27, 2026.

Best flights from Louisville to Allentown
Discover carefully curated flight deals from Louisville to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.

Last-minute flights from Louisville to Allentown
Discover last-minute flight deals from Louisville to Allentown. Data last updated October 27, 2026 and is based on user searches.

One-way flights from Louisville to Allentown
Search for one-way flight options from Louisville to Allentown. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.