HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$127+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — DEN
May 3 — May 101
Sat 5/3
Sat 5/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to Denver with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Allentown-Bethlehem to Denver Intl are usually found in October or September, booked 14 days in advance, depart on a Sunday 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 April 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$127
(Booking.com)

Popular in

December

Cheapest in

October

Average price

$383

Good round-trip deal

$173 or less

Good one-way deal

$72 or less
Provider with most accurate pricing for Allentown-Bethlehem-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-Denver Intl flights.
Search Deals
From Allentown-Bethlehem to Denver Intl
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Allentown-Bethlehem to Denver Intl.
Search Deals
Price to beat on a one-way flight from Allentown-Bethlehem to Denver Intl.
Search Deals

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 April 28, 2025.

This Booking.com deal was found by Cheapflights users on 4/28. 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 9/48:00 amABE - DEN
Nonstop3h 45mAllegiant Air
Thu 9/1110:35 amDEN - ABE
Nonstop3h 30mAllegiant Air
Deal found 4/28$127
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/285:27 pmABE - DEN
1 stop7h 32mAmerican Airlines
Wed 6/412:19 pmDEN - ABE
2 stops10h 21mAmerican Airlines
Deal found 4/28$208
This Delta deal was found by Cheapflights users on 4/28. 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 5/275:50 pmABE - DEN
1 stop6h 07mDelta
Fri 6/612:06 pmDEN - ABE
1 stop8h 49mDelta
Deal found 4/28$273
This Trip.com deal was found by Cheapflights users on 4/28. 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.
Thu 5/226:15 amABE - DEN
1 stop19h 07mMultiple Airlines
Thu 5/299:51 amDEN - ABE
Nonstop3h 22mMultiple Airlines
Deal found 4/28$291
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/155:35 pmABE - DEN
1 stop7h 47mUnited Airlines
Sat 7/1911:25 amDEN - ABE
1 stop8h 30mUnited Airlines
Deal found 4/28$414

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 April 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

Thu 9/4

8:00 am-9:45 am

Nonstop3h 45m

Denver Intl

Thu 9/11

10:35 am-4:05 pm

Nonstop3h 30m

$127

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 5/28

5:27 pm-10:59 pm

1 stop7h 32m

Denver Intl

Wed 6/4

12:19 pm-12:40 am

2 stops10h 21m

$208

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 5/27

5:50 pm-9:57 pm

1 stop6h 07m

Denver Intl

Fri 6/6

12:06 pm-10:55 pm

1 stop8h 49m

$273

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Thu 5/22

6:15 am-11:22 pm

1 stop19h 07m

Denver Intl

Thu 5/29

9:51 am-3:13 pm

Nonstop3h 22m

$291

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 7/15

5:35 pm-11:22 pm

1 stop7h 47m

Denver Intl

Sat 7/19

11:25 am-9:55 pm

1 stop8h 30m

$414

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 8/13

2:56 pm-7:05 pm

1 stop6h 09m

$180

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 6/21

6:05 pm-10:29 pm

1 stop6h 24m

$190

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sun 5/18

6:37 am-1:10 pm

2 stops8h 33m

$629

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-Denver flight deals on Cheapflights vs. FlightHub >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 April 25, 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 April 28, 2025.

It’s typically best to fly out from Allentown to Denver in the morning. Doing so could potentially save you 29% 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 March 30, 2025.

Travelers seeking maximum savings on their Allentown to Denver flight should consider departing on Sunday 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 April 28, 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
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Allegiant Air
7.3
Good
734 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 $127, was found to be the cheapest airline from Allentown to Denver.Alternate airlines to your destination round-trip include American Airlines and Delta. Allegiant Air is priced at 60% 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 American Airlines ($180), Delta ($190), and United Airlines ($629).

  • What are the cheapest flights from Allentown to Denver?

    While on average a flight from Allentown to Denver is generally $160, our data shows the cheapest flight currently is $72. When looking at the most popular route, (Allentown-Bethlehem - Denver Intl), you can expect to pay $121 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
Silverthorne
Brighton
Golden
Greeley
Frisco
Grand Lake
Thornton
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield
Idaho Springs
Limon

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.

Alternative routes for Allentown to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Denver flights
LaGuardia to Denver flights
John F Kennedy Intl to Denver flights
Philadelphia to Denver flights
Dulles Intl to Denver flights
Reagan-National to Denver flights
Pittsburgh to Denver flights
John F Kennedy Intl to Colorado Springs flights
Newark to Colorado Springs flights
Dulles Intl to Colorado Springs flights
John F Kennedy Intl to Aspen flights
Newark to Aspen flights
LaGuardia to Colorado Springs flights
Reagan-National to Colorado Springs flights
Newark to Grand Junction flights
John F Kennedy Intl to Grand Junction flights
LaGuardia to Grand Junction flights
LaGuardia to Aspen flights
Newark to Montrose flights
Harrisburg to Denver flights
LaGuardia to Montrose flights
Philadelphia to Colorado Springs flights
Scranton to Denver flights
Newark to Vail flights
Philadelphia to Grand Junction flights
Dulles Intl to Aspen flights
Newark to Durango flights
Dulles Intl to Durango flights
Dulles Intl to Grand Junction flights
LaGuardia to Durango flights
LaGuardia to Vail flights
State College to Denver flights
Reagan-National to Durango flights
Reagan-National to Aspen flights
Harrisburg to Montrose flights
Philadelphia to Durango flights
John F Kennedy Intl to Vail flights
Dulles Intl to Vail flights
Reagan-National to Grand Junction flights
Newark to Gunnison flights
Dulles Intl to Hayden flights
Dulles Intl to Montrose flights
John F Kennedy Intl to Montrose flights
Harrisburg to Colorado Springs flights
Philadelphia to Aspen flights
Reagan-National to Vail flights
John F Kennedy Intl to Durango flights
LaGuardia to Gunnison flights
Reagan-National to Montrose flights

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 April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$43Average$117FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$105Average$217FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$194Average$441FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$234Average$360FlexibilityNo cancel feeOn-time71%
DeltaCheapest$259Average$417FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.