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Allentown

$89+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ABE
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
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 June 28, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 9/119:36 am
DEN
-
ABE
Nonstop3h 32m
Allegiant Air
Mon 9/147:30 am
ABE
-
DEN
Nonstop3h 46m
Allegiant Air
Deal found 6/25$123
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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.
Mon 8/35:47 pm
DEN
-
ABE
Nonstop3h 28m
Allegiant Air
Mon 8/172:54 pm
ABE
-
DEN
Nonstop4h 02m
Allegiant Air
Deal found 6/24$147
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 8/75:46 pm
DEN
-
ABE
Nonstop3h 28m
Allegiant Air
Mon 8/172:54 pm
ABE
-
DEN
Nonstop4h 02m
Allegiant Air
Deal found 6/25$209
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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.
Mon 8/105:46 pm
DEN
-
ABE
Nonstop3h 28m
Allegiant Air
Mon 8/172:54 pm
ABE
-
DEN
Nonstop4h 02m
Allegiant Air
Deal found 6/25$223
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 9/119:36 am
DEN
-
ABE
Nonstop3h 32m
Multiple Airlines
Mon 10/53:32 pm
ABE
-
DEN
2 stops33h 01m
Multiple Airlines
Deal found 6/23$245
This Cheapflightsfares deal was found by Cheapflights users on 6/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:46 pm
DEN
-
ABE
Nonstop3h 28m
Allegiant Air
Fri 8/217:00 am
ABE
-
DEN
Nonstop3h 52m
Allegiant Air
Deal found 6/27$267
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:55 am
DEN
-
ABE
2 stops21h 39m
Allegiant Air
Mon 9/217:30 am
ABE
-
DEN
Nonstop3h 46m
Allegiant Air
Deal found 6/26$276
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:20 am
DEN
-
ABE
Nonstop3h 28m
Allegiant Air
Mon 8/32:57 pm
ABE
-
DEN
Nonstop4h 00m
Allegiant Air
Deal found 6/27$292
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:26 am
DEN
-
ABE
1 stop7h 59m
Multiple Airlines
Mon 9/217:30 am
ABE
-
DEN
Nonstop3h 46m
Multiple Airlines
Deal found 6/26$305

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 June 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$123
(Cheapflightsfares)

One-way from

$89
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$419

Good round-trip deal

$167 or less

Good one-way deal

$115 or less
Provider with most accurate pricing for Denver Intl-Allentown-Bethlehem flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Allentown-Bethlehem flights.
Search Deals
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. 24% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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.
Search Deals

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 June 28, 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 - ABE

DENABE

Denver Intl

Sat 7/25

7:15 am-5:25 pm

1 stop8h 10m

Allentown-Bethlehem

Fri 7/31

6:05 pm-12:23 am

1 stop8h 18m

$411

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 7/24

10:20 am-3:48 pm

Nonstop3h 28m

Allentown-Bethlehem

Thu 7/30

6:00 am-7:13 am

2 stops27h 13m

$412

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 8/14

1:15 pm-10:23 pm

1 stop7h 08m

Allentown-Bethlehem

Mon 8/17

6:08 pm-12:36 am

1 stop8h 28m

$423

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Sat 7/25

7:15 am-5:25 pm

1 stop8h 10m

Allentown-Bethlehem

Sun 8/2

6:05 pm-12:23 am

1 stop8h 18m

$454

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 9/18

7:10 pm-4:56 pm

1 stop19h 46m

Allentown-Bethlehem

Mon 9/21

5:36 pm-11:53 pm

1 stop8h 17m

$566
Quickest round-trip

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Wed 7/15

7:40 am-5:01 pm

2 stops7h 21m

Allentown-Bethlehem

Sat 7/18

5:41 pm-11:49 pm

1 stop8h 08m

$726

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 9/17

5:59 pm-9:39 am

2 stops13h 40m

Allentown-Bethlehem

Mon 9/21

5:36 pm-5:59 pm

2 stops26h 23m

$769

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Mon 8/10

8:54 pm-5:01 pm

2 stops18h 07m

Allentown-Bethlehem

Mon 8/17

5:36 pm-6:35 am

2 stops14h 59m

$775

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Tue 7/14

4:00 pm-9:58 am

2 stops15h 58m

Allentown-Bethlehem

Tue 7/21

10:35 am-6:32 am

2 stops21h 57m

$821

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 7/24

5:38 pm-9:07 pm

2 stops25h 29m

Allentown-Bethlehem

Fri 7/31

10:35 am-6:32 am

2 stops21h 57m

$852

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 20 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 June.
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 $186). 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 June 28, 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?

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 June 28, 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
9,899 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

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
9,899 reviews
United Airlines
7.4
Good
9,899 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

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
691 reviews
United Airlines
7.4
Good
9,899 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

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
11,776 reviews
United Airlines
7.4
Good
9,899 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

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 3h 28m. Fly via Allegiant Air, Delta, or United 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 $130, 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 67% 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 $204 for a flight from Denver to Allentown. The cheapest flight overall is $68 while the most popular route, (Denver Intl - Allentown-Bethlehem) is currently priced at $123.

  • 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 $186). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 June 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$130Average$205FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$178Average$474FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$188Average$518FlexibilityNo cancel feeOn-time69%

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