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$67+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ABE
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Allentown-Bethlehem are usually found in October or May, booked 61 days in advance, depart on a Monday or Wednesday and return on a Monday

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 June 18, 2025.

Round-trip from

$93
(Booking.com)

One-way from

$67
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$235

Good round-trip deal

$128 or less

Good one-way deal

$92 or less
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. 22% potential increase in price ($87 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 June 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 June 18, 2025.

This Booking.com deal was found by Cheapflights users on 6/18. 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 10/910:15 amDEN - ABE
Nonstop3h 27mAllegiant Air
Sun 10/127:30 amABE - DEN
Nonstop3h 55mAllegiant Air
Deal found 6/18$93
This Delta deal was found by Cheapflights users on 6/16. 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.
Tue 8/267:05 amDEN - ABE
1 stop8h 29mDelta
Sat 8/3012:56 pmABE - DEN
1 stop9h 20mDelta
Deal found 6/16$283
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Wed 7/91:49 pmDEN - ABE
1 stop8h 38mAmerican Airlines
Fri 7/116:15 amABE - DEN
1 stop8h 44mAmerican Airlines
Deal found 6/17$307
This Mytrip deal was found by Cheapflights users on 6/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/249:51 amDEN - ABE
Nonstop3h 30mMultiple Airlines
Sun 7/276:30 amABE - DEN
3 stops27h 05mMultiple Airlines
Deal found 6/18$380
This Trip.com deal was found by Cheapflights users on 6/17. 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.
Tue 9/307:48 amDEN - ABE
1 stop7h 05mUnited Airlines
Mon 10/65:28 pmABE - DEN
1 stop8h 02mUnited Airlines
Deal found 6/17$540

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 18, 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 7/24

9:51 am-3:21 pm

Nonstop3h 30m

Allentown-Bethlehem

Sun 7/27

7:00 am-9:01 am

Nonstop4h 01m

$176

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Tue 8/26

7:05 am-5:34 pm

1 stop8h 29m

Allentown-Bethlehem

Sat 8/30

12:56 pm-8:16 pm

1 stop9h 20m

$283

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Wed 7/9

1:49 pm-12:27 am

1 stop8h 38m

Allentown-Bethlehem

Fri 7/11

6:15 am-12:59 pm

1 stop8h 44m

$307

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 7/24

9:51 am-3:21 pm

Nonstop3h 30m

Allentown-Bethlehem

Sun 7/27

6:30 am-7:35 am

3 stops27h 05m

$380

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Tue 9/30

7:48 am-4:53 pm

1 stop7h 05m

Allentown-Bethlehem

Mon 10/6

5:28 pm-11:30 pm

1 stop8h 02m

$540

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 8/21

9:51 am-3:13 pm

Nonstop3h 22m

$67

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Sun 8/31

5:00 am-6:07 pm

2 stops11h 07m

$120

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 9/4

12:10 pm-10:39 pm

1 stop8h 29m

$150

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 7/31

10:27 am-10:02 pm

3 stops33h 35m

$263

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Wed 8/6

6:00 am-5:00 pm

1 stop9h 00m

$448

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

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 June 13, 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 61 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 $291). Flying from Denver to Allentown in December is currently the most expensive (average of $395). 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 18, 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 35% on airfare.

Rainfall in Allentown by month

Plan your trip to Allentown by taking into account the average rainfall totals by month.

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.

Temperature in Allentown by month

Plan your trip to Allentown by taking into account the average temperature totals by month.

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).

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 18, 2025.
See what other customers who have flown with Delta, United Airlines and Allegiant Air from Denver to Allentown have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
8,810 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
7.3
Good
722 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
7,964 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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.

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

    Allegiant Air, at $93, was found to be the cheapest airline from Denver to Allentown.Alternate airlines to your destination round-trip include Delta and American Airlines. Users have found that Allegiant Air is 70% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Denver to Allentown one-way?

    One-way options have recently been found by users for as low as $67 on Allegiant Air. Other airlines that offer cheap prices include American Airlines from $120 and Delta from $150 one-way.

  • What are the cheapest flights from Denver to Allentown?

    On average you can expect to pay $176 for a flight from Denver to Allentown. The cheapest flight overall is $50 while the most popular route, (Denver Intl - Allentown-Bethlehem) is currently priced at $118.

  • 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 $291). Flying from Denver to Allentown in December is currently the most expensive (average of $395). 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 5 airlines flying from Denver to Allentown

Discover the top 5 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$42Average$150FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$74Average$220FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$162Average$364FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$163Average$459FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$393FlexibilityNo cancel feeOn-timeN/A

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