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Allentown

$55+ Cheap flights from Denver to Allentown (DEN - 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ABE
Sep 9 — Sep 161
Wed 9/9
Wed 9/16
1 adult, Economy
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Cheap flight deals from Denver to Allentown

Cheapest flights from Denver to Allentown
Explore the most affordable flight options available from Denver to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

This Trip.com deal was found by Cheapflights users on 8/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:36 am -
Nonstop3h 32m
Mon 9/147:30 am -
Nonstop3h 46m
Deal found 8/6$106
This Trip.com deal was found by Cheapflights users on 8/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:14 am -
Nonstop3h 28m
Mon 10/56:30 am -
Nonstop3h 54m
Deal found 8/7$120
This Super.com deal was found by Cheapflights users on 8/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:42 am -
Nonstop3h 29m
Mon 8/317:30 am -
Nonstop3h 52m
Deal found 8/8$190
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:36 am -
Nonstop3h 32m
Mon 9/217:30 am -
Nonstop3h 46m
Deal found 8/10$191
This Gotogate deal was found by Cheapflights users on 8/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:06 am -
Nonstop3h 32m
Mon 9/287:30 am -
Nonstop3h 46m
Deal found 8/10$197
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Wed 9/3010:38 am -
1 stop20h 14m
Mon 10/56:30 am -
Nonstop3h 54m
Deal found 8/6$199

Find flight deals from Denver to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 August 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Trip.com)

One-way from

$55
(Trip.com)

Popular in

March

Cheapest in

October

Average price

$433

Good round-trip deal

$124 or less

Good one-way deal

$89 or less
Provider with most accurate pricing for Denver Intl-Allentown-Bethlehem flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Allentown-Bethlehem flights.
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From Denver Intl to Allentown-Bethlehem
Search Deals
One-way flight from Denver Intl to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Allentown-Bethlehem.
Search Deals
Price to beat on a one-way flight from Denver Intl to Allentown-Bethlehem.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 August 10, 2026.
Use the filters below to find and compare flights from Denver to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Mon 9/14

8:00 am-10:35 pm

2 stops16h 35m

$298

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 10/16

2:36 pm-10:29 pm

1 stop5h 53m

Allentown-Bethlehem

Mon 10/19

1:00 pm-8:11 pm

1 stop9h 11m

$359

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Tue 9/8

12:23 pm-11:25 pm

2 stops9h 02m

Allentown-Bethlehem

Tue 9/15

2:25 pm-7:09 pm

1 stop6h 44m

$426
Quickest round-trip

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 10/16

2:19 pm-12:28 am

1 stop8h 09m

Allentown-Bethlehem

Mon 10/19

6:44 pm-10:58 pm

1 stop6h 14m

$451

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Thu 9/10

7:15 am-5:21 pm

1 stop8h 06m

Allentown-Bethlehem

Sun 9/13

6:08 pm-11:14 pm

1 stop7h 06m

$488

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Sat 8/29

7:45 am-5:01 pm

1 stop7h 16m

Allentown-Bethlehem

Mon 8/31

5:36 pm-11:53 pm

1 stop8h 17m

$494

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Mon 9/14

12:29 pm-11:22 pm

2 stops8h 53m

Allentown-Bethlehem

Mon 9/28

2:25 pm-10:34 pm

2 stops10h 09m

$503

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 10/2

7:10 pm-9:35 am

1 stop12h 25m

Allentown-Bethlehem

Mon 10/5

5:43 pm-11:54 pm

1 stop8h 11m

$572

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Tue 9/8

8:46 pm-9:00 pm

2 stops22h 14m

Allentown-Bethlehem

Tue 9/15

5:36 pm-6:56 am

2 stops15h 20m

$656
Cheapest one-way

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

$55

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/8

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Denver 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 Denver to Allentown in August.
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 Denver-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-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 Denver-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 Denver to Allentown

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

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

Currently, October is the cheapest month in which you can book a flight from Denver to Allentown (average of $181). Flying from Denver to Allentown in March is currently the most expensive (average of $767). 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 DEN to ABE?

Find hourly flight availability from Denver to Allentown. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 10, 2026.

When flying from Denver to Allentown, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Airfare is below average for this route at the moment.

Denver to Allentown flights typically cost between $240 and $488 in September.
The cheapest round-trip price found within the last 5 days was $106 on Allegiant Air (Sep 11-Sep 14).

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 August 10, 2026.
Read through reviews of airlines operating flights from Denver to Allentown, such as United Airlines,Allegiant Air, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,103 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
10,103 reviews
United Airlines
7.4
Good
10,103 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Allegiant Air
7.3
Good
679 reviews
United Airlines
7.4
Good
10,103 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.1
Good
11,899 reviews
United Airlines
7.4
Good
10,103 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

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

    There are many flights that can get you from Denver to Allentown in 5h 53m. Fly via Delta or American Airlines to get the fastest option. The distance between Denver and Allentown is about 1534 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 Denver to Allentown round-trip?

    Allegiant Air, at $124, was found to be the cheapest airline from Denver to Allentown.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that Allegiant Air is 68% cheaper than the other options available to this destination.

  • What are the cheapest flights from Denver to Allentown?

    On average you can expect to pay $140 for a flight from Denver to Allentown. The cheapest flight overall is $79 while the most popular route, (Denver Intl - Allentown-Bethlehem) is currently priced at $113.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Denver to Allentown (average of $181). Flying from Denver to Allentown in March is currently the most expensive (average of $767). 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

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Top 3 airlines flying from Denver to Allentown

Discover the top 3 airlines that operate flights from Denver 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 August 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$124Average$204FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$178Average$460FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$188Average$518FlexibilityNo cancel feeOn-time69%

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