What is the cheapest airline that flies from Allentown-Bethlehem to Denver Intl?

Allegiant Air and Delta are the most popular carriers operating from Allentown-Bethlehem to Denver Intl

What airlines fly to Denver?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Denver from Allentown according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 7 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Allentown-Bethlehem Airport to Denver Intl Airport is 4 as of September 2026.

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.

$138 Cheap Flights from Allentown to Denver in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Allentown to Denver

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One-way

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Cheap round-trip flights

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6:00 am - 5:21 pmABE Allentown-Bethlehem-DEN Denver Intl

13h 21m1 stop Nashville Intl

9:12 pm - 8:33 amDEN Denver Intl-ABE Allentown-Bethlehem

33h 21m2 stops Houston George Bush Intcntl Orlando

$308Multiple Airlines

Thu, Oct 22 - Tue, Oct 27

4:32 pm - 3:54 pmABE Allentown-Bethlehem-DEN Denver Intl

25h 22m2 stops Orlando Dallas/Fort Worth

7:02 pm - 8:33 amDEN Denver Intl-ABE Allentown-Bethlehem

11h 31m1 stop Orlando

$310Multiple Airlines

Mon, Oct 19 - Wed, Oct 21

7:30 am - 9:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

10:14 am - 3:42 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 28mnonstop

$324Allegiant Air

Fri, Oct 16 - Mon, Oct 19

6:00 am - 11:37 amABE Allentown-Bethlehem-DEN Denver Intl

7h 37m1 stop Chicago O'Hare Intl

2:30 pm - 10:25 pmDEN Denver Intl-ABE Allentown-Bethlehem

5h 55m1 stop Chicago O'Hare Intl

$341American Airlines

Sat, Oct 24 - Sat, Oct 31

6:20 pm - 10:58 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 38m1 stop Chicago O'Hare Intl

3:59 pm - 12:28 amDEN Denver Intl-ABE Allentown-Bethlehem

6h 29m1 stop Charlotte Douglas

$341American Airlines

Thu, Feb 25 - Wed, Mar 3

6:00 pm - 11:22 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 22m1 stop Atlanta Hartsfield-Jackson

7:15 am - 5:13 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 58m1 stop Atlanta Hartsfield-Jackson

$341Delta

Sat, Dec 5 - Thu, Dec 10

6:03 pm - 11:12 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 09m1 stop Atlanta Hartsfield-Jackson

7:00 am - 5:16 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 16m1 stop Atlanta Hartsfield-Jackson

$341Delta

Thu, Oct 22 - Mon, Oct 26

7:30 am - 9:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

10:14 am - 3:42 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 28mnonstop

$348Allegiant Air

Fri, Oct 16 - Mon, Oct 19

5:36 pm - 9:48 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 12m1 stop Chicago O'Hare Intl

11:15 am - 9:02 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 47m1 stop Chicago O'Hare Intl

$379United Airlines

Tue, Oct 27 - Tue, Nov 3

5:25 pm - 11:53 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 28m1 stop Chicago O'Hare Intl

7:40 am - 4:45 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 05m1 stop Chicago O'Hare Intl

$393United Airlines

Sat, Jan 2 - Wed, Jan 6

Cheap last minute flights

Enter your travel dates to find the best prices.

7:30 am - 9:16 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

10:14 am - 3:42 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 28mnonstop

$326Allegiant Air

Mon, Sep 28 - Fri, Oct 9

7:30 am - 9:16 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

10:14 am - 3:42 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 28mnonstop

$326Allegiant Air

Mon, Sep 28 - Fri, Oct 2

7:30 am - 9:16 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

6:40 am - 9:28 pmDEN Denver Intl-ABE Allentown-Bethlehem

12h 48m1 stop Orlando

$336Multiple Airlines

Mon, Sep 28 - Mon, Oct 5

7:30 am - 9:16 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

10:40 am - 9:22 amDEN Denver Intl-ABE Allentown-Bethlehem

20h 42m2 stops Dallas/Fort Worth Nashville Intl

$343Multiple Airlines

Mon, Sep 28 - Wed, Oct 14

5:10 pm - 12:17 amABE Allentown-Bethlehem-DEN Denver Intl

9h 07m1 stop Chicago O'Hare Intl

8:18 am - 4:40 pmDEN Denver Intl-ABE Allentown-Bethlehem

6h 22m1 stop Chicago O'Hare Intl

$519American Airlines

Tue, Sep 29 - Wed, Sep 30

5:10 pm - 12:17 amABE Allentown-Bethlehem-DEN Denver Intl

9h 07m1 stop Chicago O'Hare Intl

12:17 pm - 10:12 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 55m1 stop Chicago O'Hare Intl

$519American Airlines

Tue, Sep 29 - Tue, Oct 6

6:25 am - 1:21 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 56m1 stop Atlanta Hartsfield-Jackson

1:15 pm - 10:16 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 01m1 stop Atlanta Hartsfield-Jackson

$568Delta

Wed, Sep 30 - Sat, Oct 3

6:25 am - 11:05 amABE Allentown-Bethlehem-DEN Denver Intl

6h 40m1 stop Atlanta Hartsfield-Jackson

7:00 am - 5:16 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 16m1 stop Atlanta Hartsfield-Jackson

$579Delta

Wed, Sep 30 - Tue, Oct 6

5:43 pm - 11:54 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 11m1 stop Chicago O'Hare Intl

8:00 am - 9:00 pmDEN Denver Intl-ABE Allentown-Bethlehem

11h 00m2 stops Omaha Eppley Airfield Chicago O'Hare Intl

$717United Airlines

Sat, Oct 3 - Wed, Oct 7

10:37 am - 3:17 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 40m1 stop Chicago O'Hare Intl

8:00 am - 9:00 pmDEN Denver Intl-ABE Allentown-Bethlehem

11h 00m2 stops Omaha Eppley Airfield Chicago O'Hare Intl

$717United Airlines

Wed, Sep 30 - Wed, Oct 7

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Allegiant Air flights from Allentown to Denver

Our best Allegiant Air deals on Allentown to Denver flight tickets

Allegiant Air

Oct 5

ABE6:30 amAllentown-Bethlehem

3h 54m

DEN8:24 amDenver Intl

Oct 9

DEN10:14 amDenver Intl

3h 28m

ABE3:42 pmAllentown-Bethlehem

$322

Allegiant Air

Oct 16

ABE7:30 amAllentown-Bethlehem

3h 54m

DEN9:24 amDenver Intl

Oct 19

DEN10:14 amDenver Intl

3h 28m

ABE3:42 pmAllentown-Bethlehem

$324

Allegiant Air

Sep 28

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

Oct 9

DEN10:14 amDenver Intl

3h 28m

ABE3:42 pmAllentown-Bethlehem

$326

Delta flights from Allentown to Denver

Our best Delta deals on Allentown to Denver flight tickets

Delta

Oct 20

ABE6:03 pmAllentown-Bethlehem

6h 29m

1 stop

DEN10:32 pmDenver Intl

Oct 24

DEN2:36 pmDenver Intl

5h 43m

1 stop

ABE10:19 pmAllentown-Bethlehem

$341

Delta

Nov 21

ABE6:00 pmAllentown-Bethlehem

7h 15m

1 stop

DEN11:15 pmDenver Intl

Dec 2

DEN8:15 amDenver Intl

6h 58m

1 stop

ABE5:13 pmAllentown-Bethlehem

$372

Delta

Oct 21

ABE6:03 pmAllentown-Bethlehem

6h 29m

1 stop

DEN10:32 pmDenver Intl

Oct 27

DEN2:36 pmDenver Intl

5h 43m

1 stop

ABE10:19 pmAllentown-Bethlehem

$380

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Thu 10/22

6:00 am-5:21 pm

1 stop13h 21m

Denver Intl

Tue 10/27

9:12 pm-8:33 am

2 stops33h 21m

$308

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 10/19

4:32 pm-3:54 pm

2 stops25h 22m

Denver Intl

Wed 10/21

7:02 pm-8:33 am

1 stop11h 31m

$310

Quickest round-trip

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

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

$324

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Sat 10/24

6:00 am-11:37 am

1 stop7h 37m

Denver Intl

Sat 10/31

2:30 pm-10:25 pm

1 stop5h 55m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Thu 2/25

6:20 pm-10:58 pm

1 stop6h 38m

Denver Intl

Wed 3/3

3:59 pm-12:28 am

1 stop6h 29m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Sat 12/5

6:00 pm-11:22 pm

1 stop7h 22m

Denver Intl

Thu 12/10

7:15 am-5:13 pm

1 stop7h 58m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Thu 10/22

6:03 pm-11:12 pm

1 stop7h 09m

Denver Intl

Mon 10/26

7:00 am-5:16 pm

1 stop8h 16m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

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

$348

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Tue 10/27

5:36 pm-9:48 pm

1 stop6h 12m

Denver Intl

Tue 11/3

11:15 am-9:02 pm

1 stop7h 47m

$379

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Sat 1/2

5:25 pm-11:53 pm

1 stop8h 28m

Denver Intl

Wed 1/6

7:40 am-4:45 pm

1 stop7h 05m

$393

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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

Prices are currently typical for flights on this route.

Typical prices usually range from $195 to $338.
The lowest price recently found on this route was $295.

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Allentown is in August. Flight prices, which tend to average around $216, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in August, then you should wait until September to fly from Allentown, when ticket prices are also cheap, with an average price of $224.

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 Thursday when prices can be found for as low as $243. 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 at noon when flights can be purchased for as low as $250. Flights in the morning are often more expensive with an average ticket price of $270.

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 $336 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 $256 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.

Can stopping save me money on Allentown to Denver flights?

No. A direct flight is the cheapest option for a flight between Allentown to Denver.

How have Allentown to Denver flight prices changed over time?

As of September 2026, prices for Allentown to Denver flights are approximately 20% more expensive 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	$138
Fastest flight time	3h 54m
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 $138. The best round-trip flight deal from Allentown to Denver found on momondo in the last 72 hours is $308.

The fastest flight from Allentown to Denver takes 3h 54m

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 54m 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?
The number of operators available for flights from Allentown-Bethlehem Airport to Denver Intl Airport is 4 as of September 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Allentown to Denver is Boeing 737 MAX 8 (35.74% of total bookings). The next most popular plane models are Airbus A320-100/200 (29.36%), Airbus A321neo (7.66%), and Boeing 737-800 (7.23%).
What is the most popular airline from Allentown to Denver?
Based on momondo bookings for flights between Allentown and Denver, the leading airline is Allegiant Air, making up 71% of the total bookings. Other popular airlines include American Airlines with 17%, Delta with 9%, and United Airlines with 4%.

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 Air	PriceFrom $146	Free Cancellation	Rating 7.3 678 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $177	Free Cancellation	Rating 7.4 10,242 reviews	Search United Airlines flights
American Airlines	PriceFrom $220	Free Cancellation	Rating 7.0 12,098 reviews	Search American Airlines flights
Delta	PriceFrom $244	Free Cancellation	Rating 7.8 8,607 reviews	Search Delta flights

Breckenridge

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Black Hawk

Aurora

Fort Collins

Westminster

Boulder

Longmont

Lakewood

Manitou Springs

Greeley

Keystone

Thornton

Centennial

Cripple Creek

Littleton

Englewood

Winter Park

Golden

Greenwood Village

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.

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Airports servicing Colorado

Alamosa Airport

Aspen Pitkin County Airport

Cortez Montezuma County Airport

Colorado Springs Airport

Durango La Plata County Airport

Vail Eagle County Airport

Grand Junction Regnl Airport

Gunnison Airport

Hayden Yampa Valley Airport

Montrose County Airport

Telluride Airport

Cheap flights from Allentown to Denver from $138

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 10/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Allegiant Air flights from Allentown to Denver

Our best Allegiant Air deals on Allentown to Denver flight tickets

Delta flights from Allentown to Denver

Our best Delta deals on Allentown to Denver flight tickets

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Use the filters below to find and compare flights from Allentown to Denver that are best for you.

See travel insights to Denver from

How to get the cheapest flight ticket from Allentown to Denver

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

What is the cheapest month to fly to Denver?

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

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

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

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

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

Can stopping save me money on Allentown to Denver flights?

How have Allentown to Denver flight prices changed over time?

What is the cheapest airline that flies from Allentown-Bethlehem to Denver Intl?

What airlines fly to Denver?

When to book flights from Allentown to Denver

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

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

Frequently asked questions about flying 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

Traveling to a place near Denver?

Why use momondo?

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Colorado

Fly your favorite airline to Denver

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denver

List of cabin classes available on flights landing in Denver. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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