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$90+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ABE
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Allentown-Bethlehem are usually found in October or August, booked 34 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Cheap 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 September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(American Airlines)

One-way from

$90
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$283

Good round-trip deal

$174 or less

Good one-way deal

$67 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
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One-way flight from Denver Intl to Allentown-Bethlehem
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Highest demand for flights based on searches. 21% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Denver Intl to Allentown-Bethlehem.
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Price to beat on a one-way flight from Denver Intl to Allentown-Bethlehem.
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Find 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 September 25, 2025.

This American Airlines deal was found by Cheapflights users on 9/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:47 amDEN - ABE
1 stop7h 52mAmerican Airlines
Tue 11/187:30 amABE - DEN
1 stop7h 17mAmerican Airlines
Deal found 9/23$179
This Booking.com deal was found by Cheapflights users on 9/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:15 amDEN - ABE
Nonstop3h 27mAllegiant Air
Sun 10/57:30 amABE - DEN
Nonstop3h 55mAllegiant Air
Deal found 9/22$190
This American Airlines deal was found by Cheapflights users on 9/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:00 amDEN - ABE
1 stop6h 44mAmerican Airlines
Sat 12/65:14 pmABE - DEN
1 stop8h 05mAmerican Airlines
Deal found 9/23$219
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/1910:15 amDEN - ABE
Nonstop3h 27mAllegiant Air
Sun 10/267:30 amABE - DEN
Nonstop3h 55mAllegiant Air
Deal found 9/22$227
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/26:10 amDEN - ABE
2 stops14h 05mMultiple Airlines
Sun 10/57:30 amABE - DEN
Nonstop3h 55mMultiple Airlines
Deal found 9/22$247
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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.
Thu 10/2310:15 amDEN - ABE
Nonstop3h 27mAllegiant Air
Sun 10/267:30 amABE - DEN
Nonstop3h 55mAllegiant Air
Deal found 9/24$249
This American Airlines deal was found by Cheapflights users on 9/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:47 amDEN - ABE
1 stop7h 52mAmerican Airlines
Sun 11/95:10 pmABE - DEN
1 stop8h 10mAmerican Airlines
Deal found 9/23$259
This American Airlines deal was found by Cheapflights users on 9/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:20 amDEN - ABE
2 stops10h 46mAmerican Airlines
Sun 1/111:39 pmABE - DEN
1 stop8h 09mAmerican Airlines
Deal found 9/23$274

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 September 25, 2025.
Use the filters below to find and compare flights from Denver to Allentown that are best for you.

Fly from

Denver

Fly to

Allentown

Route

Depart

Return

Price

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 12/4

12:30 pm-11:06 pm

2 stops8h 36m

Allentown-Bethlehem

Sat 12/6

5:14 pm-11:19 pm

1 stop8h 05m

$224

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 10/2

6:10 am-10:15 pm

2 stops14h 05m

Allentown-Bethlehem

Sun 10/5

7:30 am-9:25 am

Nonstop3h 55m

$247

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Sat 11/8

6:47 am-4:39 pm

1 stop7h 52m

Allentown-Bethlehem

Sun 11/9

5:10 pm-11:20 pm

1 stop8h 10m

$259

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 10/30

11:03 am-9:40 pm

1 stop8h 37m

Allentown-Bethlehem

Sun 11/2

5:10 pm-11:20 pm

1 stop8h 10m

$299

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Sun 10/19

8:56 pm-2:17 pm

2 stops15h 21m

Allentown-Bethlehem

Sun 10/26

7:30 am-9:25 am

Nonstop3h 55m

$305

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 10/17

7:00 am-8:36 am

2 stops23h 36m

Allentown-Bethlehem

Sun 10/26

7:30 am-9:25 am

Nonstop3h 55m

$314

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Wed 10/22

12:36 am-10:15 pm

1 stop19h 39m

Allentown-Bethlehem

Mon 10/27

12:52 pm-7:11 am

2 stops20h 19m

$340

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Sun 10/19

10:15 am-3:42 pm

Nonstop3h 27m

Allentown-Bethlehem

Fri 10/24

8:00 am-9:49 pm

2 stops15h 49m

$364

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Tue 11/4

7:49 am-3:51 pm

1 stop6h 02m

$90

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Wed 2/4

11:59 pm-10:54 am

1 stop8h 55m

$135

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 17 results
1
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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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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

How far ahead should I book a flight from Denver to Allentown?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Allentown. Price data was last updated on September 19, 2025.

The price you pay for your flight from Denver to Allentown may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Denver to Allentown (average of $289). Flying from Denver to Allentown in December is currently the most expensive (average of $380). 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 September 25, 2025.

One of the essential ways to save on airfare from Denver to Allentown is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 27% on airfare.

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 September 25, 2025.
Read through reviews of airlines operating flights from Denver to Allentown, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

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
8,926 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

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!
Allegiant Air
7.2
Good
699 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

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 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 8h 36m. Fly via American Airlines to get the fastest option. The distance between Denver and Allentown is about 1534 mi.

  • What are the cheapest airlines flying from Denver to Allentown round-trip?

    Allegiant Air, at $110, 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 63% 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 $136 for a flight from Denver to Allentown. The cheapest flight overall is $53 while the most popular route, (Denver Intl - Allentown-Bethlehem) is currently priced at $289.

  • 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, February is the cheapest month in which you can book a flight from Denver to Allentown (average of $289). Flying from Denver to Allentown in December is currently the most expensive (average of $380). 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 4 airlines flying from Denver to Allentown

Discover the top 4 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 September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$110Average$197FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$160Average$392FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$163Average$468FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$488FlexibilityNo cancel feeOn-timeN/A

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