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$110+ Cheap flights from Allentown to Denver (ABE - DEN)

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — DEN
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Allentown-Bethlehem to Denver Intl are usually found in September or October, booked 66 days in advance, depart on a Thursday or Friday and return on a Monday

Cheap flight deals from Allentown to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to Denver (DEN). 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$205
(Kiwi.com)

One-way from

$110
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$232

Good round-trip deal

$228 or less

Good one-way deal

$106 or less
Provider with most accurate pricing for Allentown-Bethlehem-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Allentown-Bethlehem-Denver Intl flights.
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From Allentown-Bethlehem to Denver Intl
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One-way flight from Allentown-Bethlehem to Denver Intl
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Highest demand for flights based on searches. 22% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Allentown-Bethlehem to Denver Intl.
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Price to beat on a one-way flight from Allentown-Bethlehem to Denver Intl.
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Find flight deals from Allentown to Denver

Cheapest flights from Allentown to Denver
Explore the most affordable flight options available from Allentown to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:30 pmABE - DEN
1 stop6h 38mAmerican Airlines
Tue 11/187:49 amDEN - ABE
1 stop6h 02mAmerican Airlines
Deal found 10/27$224
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:23 pmABE - DEN
1 stop7h 30mDelta
Sat 12/67:00 amDEN - ABE
1 stop8h 14mDelta
Deal found 10/25$237
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:54 pmABE - DEN
1 stop6h 58mDelta
Sun 12/77:00 amDEN - ABE
1 stop8h 14mDelta
Deal found 10/25$247
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Thu 12/47:30 amABE - DEN
1 stop16h 19mMultiple Airlines
Thu 12/119:00 pmDEN - ABE
2 stops23h 24mMultiple Airlines
Deal found 10/25$248
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:00 pmABE - DEN
1 stop8h 07mDelta
Sun 12/77:00 amDEN - ABE
1 stop8h 14mDelta
Deal found 10/25$257
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Thu 12/47:30 amABE - DEN
1 stop16h 19mMultiple Airlines
Wed 12/1011:59 pmDEN - ABE
1 stop18h 37mMultiple Airlines
Deal found 10/25$260
This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:30 pmABE - DEN
1 stop8h 39mAmerican Airlines
Tue 12/96:21 amDEN - ABE
1 stop7h 32mAmerican Airlines
Deal found 10/25$269
This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:30 pmABE - DEN
1 stop8h 39mAmerican Airlines
Sat 12/69:11 amDEN - ABE
2 stops11h 55mAmerican Airlines
Deal found 10/25$274
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Sun 12/72:37 pmABE - DEN
1 stop10h 27mMultiple Airlines
Thu 12/119:00 pmDEN - ABE
2 stops23h 24mMultiple Airlines
Deal found 10/25$283
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 pmABE - DEN
1 stop8h 07mDelta
Sat 12/67:00 amDEN - ABE
1 stop8h 14mDelta
Deal found 10/25$288
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:00 pmABE - DEN
1 stop7h 04mAmerican Airlines
Sat 11/156:47 amDEN - ABE
1 stop7h 52mAmerican Airlines
Deal found 10/26$289

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to Denver 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 October 28, 2025.
Use the filters below to find and compare flights from Allentown to Denver that are best for you.

Fly from

Allentown

Fly to

Denver

Route

Depart

Return

Price

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 12/3

5:23 pm-10:53 pm

1 stop7h 30m

Denver Intl

Sat 12/6

7:00 am-5:14 pm

1 stop8h 14m

$237

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 12/3

12:54 pm-5:52 pm

1 stop6h 58m

Denver Intl

Sun 12/7

7:00 am-5:14 pm

1 stop8h 14m

$247

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Thu 12/4

6:00 pm-12:07 am

1 stop8h 07m

Denver Intl

Sat 12/6

7:00 am-5:14 pm

1 stop8h 14m

$288

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Thu 12/4

6:00 pm-12:07 am

1 stop8h 07m

Denver Intl

Sun 12/7

7:00 am-5:14 pm

1 stop8h 14m

$298

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 12/6

5:14 pm-11:19 pm

1 stop8h 05m

Denver Intl

Thu 12/11

6:45 am-4:44 pm

1 stop7h 59m

$308

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 12/2

4:30 pm-11:09 pm

1 stop8h 39m

Denver Intl

Thu 12/11

6:45 am-4:44 pm

1 stop7h 59m

$308

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sun 12/7

7:30 am-6:37 pm

2 stops13h 07m

Denver Intl

Wed 12/10

11:59 pm-8:36 pm

1 stop18h 37m

$314

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 12/17

1:48 pm-10:22 pm

2 stops10h 34m

Denver Intl

Thu 12/25

8:07 am-4:33 pm

1 stop6h 26m

$314

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 1/6

12:47 pm-7:25 pm

1 stop8h 38m

Denver Intl

Sun 1/11

7:05 am-5:18 pm

1 stop8h 13m

$314

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 12/3

5:23 pm-10:53 pm

1 stop7h 30m

Denver Intl

Thu 12/11

1:16 pm-10:11 pm

1 stop6h 55m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 21 results
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Compare providers for flights from Allentown to Denver

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 Allentown to Denver in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice 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 Allentown-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Allentown-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-Denver flights, Cheapflights users trust eDreams the most. eDreams 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 Allentown-Denver 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 Allentown to Denver

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

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

Use this chart to determine the optimal time to book a round-trip flight from Allentown to Denver. Price data was last updated on October 24, 2025.

Booking 66 days in advance of your planned departure date is, on average, the best time to get cheap flights from Allentown to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Allentown to Denver (average of $103). Flying from Allentown to Denver in July is currently the most expensive (average of $175). 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 ABE to DEN?

Find hourly flight availability from Allentown to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

It’s typically best to fly out from Allentown to Denver in the morning. Doing so could potentially save you 55% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Allentown to Denver?

Use this chart to determine the cheapest time to fly round-trip from Allentown to Denver. Price data was last updated on October 26, 2025.

Travelers seeking maximum savings on their Allentown to Denver flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated October 28, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Allentown to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,995 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,996 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,033 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Allegiant Air
7.2
Good
695 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Frontier
5.8
Fair
3,122 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Allentown to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Allentown to Denver flight route?

    Flights from Allentown-Bethlehem to Denver Intl have been viewed 9 times in the past calendar month.

  • How long is the flight from Allentown to Denver?

    A quick flight from Allentown to Denver can take about 7h 30m. Delta provides one of the quickest options available for as low as $237. The distance between Allentown and Denver 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 Allentown to Denver round-trip?

    Frontier, at $75, was found to be the cheapest airline from Allentown to Denver.Alternate airlines to your destination round-trip include Allegiant Air and American Airlines. Frontier is priced at 77% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Allentown to Denver?

    While on average a flight from Allentown to Denver is generally $209, our data shows the cheapest flight currently is $60. When looking at the most popular route, (Allentown-Bethlehem - Denver Intl), you can expect to pay $251 for that flight.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Allentown to Denver (average of $103). Flying from Allentown to Denver in July is currently the most expensive (average of $175). 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

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Central City
Manitou Springs
Fort Morgan
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to Denver

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Top 5 airlines flying from Allentown to Denver

Discover the top 5 airlines that operate flights from Allentown to Denver. 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$75Average$192FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$120Average$220FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$199Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$269Average$474FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$397FlexibilityNo cancel feeOn-timeN/A

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