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$106+ Cheap flights from Allentown to Denver (ABE - DEN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Allentown-Bethlehem to Denver Intl are usually found in October or September, booked 59 days in advance, depart on a Saturday or Monday 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 June 12, 2025.

Round-trip from

$106
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$305

Good round-trip deal

$158 or less

Good one-way deal

$77 or less
From Allentown-Bethlehem to Denver Intl
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Highest demand for flights based on searches. 24% potential increase in price ($104 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 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 June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
Sun 8/317:00 amABE - DEN
Nonstop4h 01mAllegiant Air
Thu 9/1110:35 amDEN - ABE
Nonstop3h 30mAllegiant Air
Deal found 6/10$106
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:14 pmABE - DEN
1 stop6h 41mDelta
Sat 8/237:05 amDEN - ABE
1 stop8h 29mDelta
Deal found 6/10$257
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 9/122:37 pmABE - DEN
2 stops9h 32mAmerican Airlines
Tue 9/165:44 amDEN - ABE
2 stops10h 46mAmerican Airlines
Deal found 6/11$278
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1111:46 amABE - DEN
3 stops31h 45mMultiple Airlines
Thu 9/1810:35 amDEN - ABE
Nonstop3h 30mMultiple Airlines
Deal found 6/10$296

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 June 12, 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

Sun 8/31

7:00 am-9:01 am

Nonstop4h 01m

Denver Intl

Thu 9/11

10:35 am-4:05 pm

Nonstop3h 30m

$106

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 8/16

6:14 pm-10:55 pm

1 stop6h 41m

Denver Intl

Sat 8/23

7:05 am-5:34 pm

1 stop8h 29m

$257

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Fri 9/12

2:37 pm-10:09 pm

2 stops9h 32m

Denver Intl

Tue 9/16

5:44 am-6:30 pm

2 stops10h 46m

$278

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Thu 9/11

11:46 am-5:31 pm

3 stops31h 45m

Denver Intl

Thu 9/18

10:35 am-4:05 pm

Nonstop3h 30m

$296

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 8/9

6:14 pm-10:29 pm

1 stop6h 15m

$129

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Thu 7/3

7:00 am-9:01 am

Nonstop4h 01m

$144

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Fri 8/22

2:56 pm-10:15 pm

2 stops9h 19m

$150

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 8/9

2:37 pm-9:01 am

3 stops44h 24m

$263

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 6/28

5:35 pm-11:22 pm

1 stop7h 47m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 9, 2025.

Booking 14 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, October is the cheapest month in which you can book a flight from Allentown to Denver (average of $197). Flying from Allentown to Denver in March is currently the most expensive (average of $278). 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 June 12, 2025.

It’s typically best to fly out from Allentown to Denver in the morning. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, 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 June 8, 2025.

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

Rainfall in Denver by month

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

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

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

If weather is an important factor for your trip to Denver, 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 30.2 F).

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 June 12, 2025.
See what other customers who have flown with Delta, United Airlines and Allegiant Air from Allentown to Denver 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
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
725 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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 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 1 times in the past calendar month.

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

    Allegiant Air, at $106, was found to be the cheapest airline from Allentown to Denver.Alternate airlines to your destination round-trip include Delta and American Airlines. Allegiant Air is priced at 67% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from Allentown to Denver are Delta ($129), Allegiant Air ($144), and American Airlines ($150).

  • What are the cheapest flights from Allentown to Denver?

    While on average a flight from Allentown to Denver is generally $153, our data shows the cheapest flight currently is $49. When looking at the most popular route, (Allentown-Bethlehem - Denver Intl), you can expect to pay $106 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, October is the cheapest month in which you can book a flight from Allentown to Denver (average of $197). Flying from Allentown to Denver in March is currently the most expensive (average of $278). 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 Allentown?

Book flights to Allentown if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Greeley
Limon

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$44Average$124FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$106Average$214FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$199Average$451FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$226Average$362FlexibilityNo cancel feeOn-time71%
DeltaCheapest$259Average$396FlexibilityNo cancel feeOn-timeN/A

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