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Cheap flights from Allentown to Denver from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to Denver departing on 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Allentown to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
7:30 am - 9:16 am
ABE
-
DEN
3h 46mnonstop
Allegiant Air Logo
10:14 am - 3:42 pm
DEN
-
ABE
3h 28mnonstop
$117Allegiant Air
Mon, Sep 28 - Fri, Oct 2
Allegiant Air Logo
7:30 am - 9:22 am
ABE
-
DEN
3h 52mnonstop
Allegiant Air Logo
10:06 am - 3:38 pm
DEN
-
ABE
3h 32mnonstop
$128Allegiant Air
Mon, Aug 31 - Fri, Sep 4
Allegiant Air Logo
7:30 am - 9:22 am
ABE
-
DEN
3h 52mnonstop
Allegiant Air Logo
10:06 am - 3:38 pm
DEN
-
ABE
3h 32mnonstop
$133Allegiant Air
Mon, Aug 31 - Fri, Sep 4
Allegiant Air Logo
7:30 am - 9:22 am
ABE
-
DEN
3h 52mnonstop
Allegiant Air Logo
10:06 am - 3:38 pm
DEN
-
ABE
3h 32mnonstop
$136Allegiant Air
Mon, Aug 31 - Fri, Sep 4
Allegiant Air Logo
7:30 am - 9:22 am
ABE
-
DEN
3h 52mnonstop
Allegiant Air Logo
10:06 am - 3:38 pm
DEN
-
ABE
3h 32mnonstop
$144Allegiant Air
Mon, Aug 31 - Fri, Sep 4
Allegiant Air Logo
8:00 am - 9:46 am
ABE
-
DEN
3h 46mnonstop
Allegiant Air Logo
9:36 am - 3:08 pm
DEN
-
ABE
3h 32mnonstop
$148Allegiant Air
Mon, Sep 7 - Fri, Sep 11
Allegiant Air Logo
7:00 am - 8:52 am
ABE
-
DEN
3h 52mnonstop
Allegiant Air Logo
10:06 am - 3:38 pm
DEN
-
ABE
3h 32mnonstop
$153Allegiant Air
Fri, Aug 28 - Fri, Sep 4
Allegiant Air Logo
6:30 am - 8:24 am
ABE
-
DEN
3h 54mnonstop
Allegiant Air Logo
10:14 am - 3:42 pm
DEN
-
ABE
3h 28mnonstop
$163Allegiant Air
Mon, Oct 5 - Fri, Oct 9
Allegiant Air Logo
7:30 am - 9:24 am
ABE
-
DEN
3h 54mnonstop
Allegiant Air Logo
10:14 am - 3:42 pm
DEN
-
ABE
3h 28mnonstop
$168Allegiant Air
Fri, Oct 16 - Mon, Oct 19
Allegiant Air Logo
7:00 am - 8:52 am
ABE
-
DEN
3h 52mnonstop
Allegiant Air Logo
9:42 am - 3:11 pm
DEN
-
ABE
3h 29mnonstop
$173Allegiant Air
Mon, Aug 24 - Fri, Aug 28

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Allegiant Air flights from Allentown to Denver

Our best Allegiant Air deals on Allentown to Denver flight tickets
Allegiant Air
Sep 28
ABE7:30 amAllentown-Bethlehem
3h 46m
DEN9:16 amDenver Intl
Oct 2
DEN10:14 amDenver Intl
3h 28m
ABE3:42 pmAllentown-Bethlehem
$117
Allegiant Air
Aug 31
ABE7:30 amAllentown-Bethlehem
3h 52m
DEN9:22 amDenver Intl
Sep 4
DEN10:06 amDenver Intl
3h 32m
ABE3:38 pmAllentown-Bethlehem
$128
Allegiant Air
Aug 31
ABE7:30 amAllentown-Bethlehem
3h 52m
DEN9:22 amDenver Intl
Sep 4
DEN10:06 amDenver Intl
3h 32m
ABE3:38 pmAllentown-Bethlehem
$136

Delta flights from Allentown to Denver

Our best Delta deals on Allentown to Denver flight tickets
Delta
Jul 4
ABE7:00 amAllentown-Bethlehem
9h 04m
1 stop
DEN2:04 pmDenver Intl
Jul 29
DEN2:10 pmDenver Intl
6h 58m
1 stop
ABE11:08 pmAllentown-Bethlehem
$411
Delta
Jul 2
ABE1:12 pmAllentown-Bethlehem
6h 41m
1 stop
DEN5:53 pmDenver Intl
Aug 4
DEN7:19 amDenver Intl
8h 04m
1 stop
ABE5:23 pmAllentown-Bethlehem
$460
Delta
Jul 1
ABE1:12 pmAllentown-Bethlehem
6h 41m
1 stop
DEN5:53 pmDenver Intl
Jul 11
DEN1:10 pmDenver Intl
7h 58m
1 stop
ABE11:08 pmAllentown-Bethlehem
$469

momondo 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, momondo users made 832,500 searches. Data last updated June 28, 2026.
Use the filters below to find and compare flights from Allentown to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 9/28

7:30 am-9:16 am

Nonstop3h 46m

Denver Intl

Fri 10/2

10:14 am-3:42 pm

Nonstop3h 28m

$117

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 8/31

7:30 am-9:22 am

Nonstop3h 52m

Denver Intl

Fri 9/4

10:06 am-3:38 pm

Nonstop3h 32m

$128

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 8/31

7:30 am-9:22 am

Nonstop3h 52m

Denver Intl

Fri 9/4

10:06 am-3:38 pm

Nonstop3h 32m

$133

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 8/31

7:30 am-9:22 am

Nonstop3h 52m

Denver Intl

Fri 9/4

10:06 am-3:38 pm

Nonstop3h 32m

$136

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 8/31

7:30 am-9:22 am

Nonstop3h 52m

Denver Intl

Fri 9/4

10:06 am-3:38 pm

Nonstop3h 32m

$144

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 9/7

8:00 am-9:46 am

Nonstop3h 46m

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

$148

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Fri 8/28

7:00 am-8:52 am

Nonstop3h 52m

Denver Intl

Fri 9/4

10:06 am-3:38 pm

Nonstop3h 32m

$153

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 10/5

6:30 am-8:24 am

Nonstop3h 54m

Denver Intl

Fri 10/9

10:14 am-3:42 pm

Nonstop3h 28m

$163

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Fri 10/16

7:30 am-9:24 am

Nonstop3h 54m

Denver Intl

Mon 10/19

10:14 am-3:42 pm

Nonstop3h 28m

$168

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 8/24

7:00 am-8:52 am

Nonstop3h 52m

Denver Intl

Fri 8/28

9:42 am-3:11 pm

Nonstop3h 29m

$173

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Allentown to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Allentown and Denver?

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Allentown is in October. Flight prices, which tend to average around $197, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in October, then you should wait until September to fly from Allentown, when ticket prices are also cheap, with an average price of $210.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Sunday when prices can be found for as low as $164. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Friday, with ticket prices averaging around $278.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the morning when flights can be purchased for as low as $243. Flights at noon are often more expensive with an average ticket price of $249.

What is the cheapest Allentown-Bethlehem to Denver Intl flight route?

Fly from Allentown-Bethlehem to Denver Intl for the best Allentown-Bethlehem - Denver Intl flight prices

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

You are more likely to see cheaper flights to Denver from Allentown when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $313 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Allentown for as low as $203 on momondo.

What cabin class options are available on Allentown to Denver flights?

There is only 1 cabin class available to choose from on Allentown to Denver flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Allentown to Denver flight prices changed over time?

As of June 2026, prices for Allentown to Denver flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from Allentown to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Allentown to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Allentown to Denver (ABE to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Allentown to Denver

Best Price Found

$109

Fastest flight time

3h 46m

Direct flights

Tue and Sat

Airports in Denver

1 airport
The best one-way flight to Denver from Allentown in the past 72 hours is $109. The best round-trip flight deal from Allentown to Denver found on momondo in the last 72 hours is $188.
The fastest flight from Allentown to Denver takes 3h 46m
Direct flights go from Allentown to Denver on Tuesday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Denver. From Allentown there are direct flights to Denver Intl (DEN).
Search flight deals

Frequently asked questions about flying from Allentown to Denver

  • How far is Allentown-Bethlehem to Denver Intl by plane?

    Denver Intl is 1551.0 mi away from Allentown-Bethlehem. 3h 46m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Allentown-Bethlehem Airport to Denver Intl Airport?

    Prices for flights from Allentown-Bethlehem Airport to Denver Intl Airport refresh daily.

  • How many operators does momondo search for flights from Allentown-Bethlehem Airport to Denver Intl Airport?

  • How old do you have to be to fly from Allentown-Bethlehem Airport to Denver Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Allentown to Denver?

  • What is the most popular airline from Allentown to Denver?

Best airlines flying from Allentown to Denver

Compare and see reviews for airlines that fly from Allentown to Denver with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $127Free CancellationRating
7.3
692 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $177Free CancellationRating
7.4
9,901 reviews
Search United Airlines flights
American AirlinesPriceFrom $188Free CancellationRating
7.1
11,779 reviews
Search American Airlines flights
DeltaPriceFrom $252Free CancellationRating
7.8
8,455 reviews
Search Delta flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Longmont
Boulder
Manitou Springs
Westminster
Greeley
Lakewood
Keystone
Thornton
Cripple Creek
Englewood
Frisco
Centennial
Winter Park
Littleton
Copper Mountain

Why use momondo?

Why should I use momondo to find a flight deal from Allentown to Denver?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Allentown to Denver. momondo saves you time and could save you money on your trip.

Can I find flights from Allentown to Denver with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Denver from Allentown with this policy.

How can momondo help me find flights from Allentown to Denver?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Denver from Allentown.

I’m not ready to book a flight from Allentown to Denver right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Denver, momondo offers a useful price alert feature which will track prices for flights to Denver from Allentown and alert you when they change.

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