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

Allegiant Air and American Airlines 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 August 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.

$57 Cheap Flights from Allentown to Denver in 2026

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

Enter your travel dates to find the best prices.

7:30 am - 9:22 amABE Allentown-Bethlehem-DEN Denver Intl

3h 52mnonstop

9:36 am - 3:08 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 32mnonstop

$119Allegiant Air

Mon, Aug 31 - Fri, Sep 11

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

3h 46mnonstop

9:36 am - 3:08 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 32mnonstop

$134Allegiant Air

Mon, Sep 14 - Fri, Sep 25

4:31 pm - 8:07 amABE Allentown-Bethlehem-DEN Denver Intl

17h 36m1 stop Orlando Sanford Intl

9:36 am - 3:08 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 32mnonstop

$186Multiple Airlines

Mon, Aug 31 - Fri, Sep 11

6:46 pm - 5:16 pmABE Allentown-Bethlehem-DEN Denver Intl

24h 30m1 stop Nashville Intl

9:36 am - 3:08 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 32mnonstop

$190Multiple Airlines

Mon, Sep 21 - Fri, Sep 25

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

9h 07m1 stop Chicago O'Hare Intl

7:16 am - 4:40 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 24m1 stop Chicago O'Hare Intl

$237American Airlines

Wed, Sep 16 - Wed, Sep 23

2:25 pm - 7:09 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 44m1 stop Charlotte Douglas

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

6h 22m1 stop Chicago O'Hare Intl

$237American Airlines

Sat, Sep 19 - Wed, Sep 23

6:03 pm - 10:32 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 29m1 stop Atlanta Hartsfield-Jackson

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

8h 16m1 stop Atlanta Hartsfield-Jackson

$237Delta

Wed, Oct 21 - Sat, Oct 24

6:04 pm - 11:24 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 20m1 stop Atlanta Hartsfield-Jackson

8:00 am - 5:18 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 18m1 stop Atlanta Hartsfield-Jackson

$237Delta

Wed, Dec 2 - Tue, Dec 8

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

8h 11m1 stop Chicago O'Hare Intl

8:51 am - 5:08 pmDEN Denver Intl-ABE Allentown-Bethlehem

6h 17m1 stop Chicago O'Hare Intl

$350United Airlines

Fri, Sep 25 - Sat, Sep 26

5:36 pm - 10:30 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 54m1 stop Chicago O'Hare Intl

7:45 am - 4:56 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 11m1 stop Chicago O'Hare Intl

$359United Airlines

Sat, Oct 31 - Tue, Nov 3

Cheap last minute flights

Enter your travel dates to find the best prices.

2:54 pm - 4:56 pmABE Allentown-Bethlehem-DEN Denver Intl

4h 02mnonstop

10:12 am - 3:41 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 29mnonstop

$218Allegiant Air

Mon, Aug 17 - Mon, Aug 31

2:54 pm - 4:56 pmABE Allentown-Bethlehem-DEN Denver Intl

4h 02mnonstop

9:42 am - 3:11 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 29mnonstop

$246Allegiant Air

Mon, Aug 17 - Fri, Aug 28

2:54 pm - 4:56 pmABE Allentown-Bethlehem-DEN Denver Intl

4h 02mnonstop

6:30 am - 3:45 pmDEN Denver Intl-ABE Allentown-Bethlehem

31h 15m2 stops Atlanta Hartsfield-Jackson Orlando

$315Multiple Airlines

Mon, Aug 17 - Mon, Aug 31

2:54 pm - 4:56 pmABE Allentown-Bethlehem-DEN Denver Intl

4h 02mnonstop

11:59 pm - 3:45 pmDEN Denver Intl-ABE Allentown-Bethlehem

13h 46m1 stop Orlando

$326Multiple Airlines

Mon, Aug 17 - Mon, Aug 31

6:16 am - 1:17 pmABE Allentown-Bethlehem-DEN Denver Intl

9h 01m1 stop Atlanta Hartsfield-Jackson

1:15 pm - 10:23 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 08m1 stop Atlanta Hartsfield-Jackson

$457Delta

Wed, Aug 19 - Mon, Aug 31

5:12 pm - 11:59 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 47m1 stop Chicago O'Hare Intl

3:02 pm - 11:25 pmDEN Denver Intl-ABE Allentown-Bethlehem

6h 23m1 stop Charlotte Douglas

$479American Airlines

Wed, Aug 19 - Wed, Aug 26

5:12 pm - 11:59 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 47m1 stop Chicago O'Hare Intl

9:05 am - 4:42 pmDEN Denver Intl-ABE Allentown-Bethlehem

5h 37m1 stop Chicago O'Hare Intl

$479American Airlines

Tue, Aug 18 - Wed, Aug 26

6:08 pm - 11:02 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 54m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:23 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 23m1 stop Atlanta Hartsfield-Jackson

$479Delta

Tue, Aug 18 - Sat, Aug 29

5:36 pm - 11:54 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 18m1 stop Chicago O'Hare Intl

1:25 pm - 9:00 pmDEN Denver Intl-ABE Allentown-Bethlehem

5h 35m1 stop Chicago O'Hare Intl

$515United Airlines

Mon, Aug 17 - Mon, Aug 31

5:36 pm - 11:53 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 17m1 stop Chicago O'Hare Intl

7:45 am - 4:56 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 11m1 stop Chicago O'Hare Intl

$634United Airlines

Wed, Aug 19 - Sun, Aug 30

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Allegiant Air flights from Allentown to Denver

Our best Allegiant Air deals on Allentown to Denver flight tickets

Allegiant Air

Aug 31

ABE7:30 amAllentown-Bethlehem

3h 52m

DEN9:22 amDenver Intl

Sep 11

DEN9:36 amDenver Intl

3h 32m

ABE3:08 pmAllentown-Bethlehem

$119

Allegiant Air

Sep 14

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

Sep 25

DEN9:36 amDenver Intl

3h 32m

ABE3:08 pmAllentown-Bethlehem

$134

Allegiant Air

Sep 21

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

Sep 25

DEN9:36 amDenver Intl

3h 32m

ABE3:08 pmAllentown-Bethlehem

$146

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 8/31

7:30 am-9:22 am

Nonstop3h 52m

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

$119

Quickest round-trip

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 9/14

7:30 am-9:16 am

Nonstop3h 46m

Denver Intl

Fri 9/25

9:36 am-3:08 pm

Nonstop3h 32m

$134

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 8/31

4:31 pm-8:07 am

1 stop17h 36m

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

$186

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 9/21

6:46 pm-5:16 pm

1 stop24h 30m

Denver Intl

Fri 9/25

9:36 am-3:08 pm

Nonstop3h 32m

$190

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Wed 9/16

5:10 pm-12:17 am

1 stop9h 07m

Denver Intl

Wed 9/23

7:16 am-4:40 pm

1 stop7h 24m

$237

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Sat 9/19

2:25 pm-7:09 pm

1 stop6h 44m

Denver Intl

Wed 9/23

8:18 am-4:40 pm

1 stop6h 22m

$237

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Wed 10/21

6:03 pm-10:32 pm

1 stop6h 29m

Denver Intl

Sat 10/24

7:00 am-5:16 pm

1 stop8h 16m

$237

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Wed 12/2

6:04 pm-11:24 pm

1 stop7h 20m

Denver Intl

Tue 12/8

8:00 am-5:18 pm

1 stop7h 18m

$237

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Fri 9/25

5:43 pm-11:54 pm

1 stop8h 11m

Denver Intl

Sat 9/26

8:51 am-5:08 pm

1 stop6h 17m

$350

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Sat 10/31

5:36 pm-10:30 pm

1 stop6h 54m

Denver Intl

Tue 11/3

7:45 am-4:56 pm

1 stop7h 11m

$359

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 low for flights on this route.

Typical prices usually range from $176 to $319.
The lowest price recently found on this route was $119.

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 $207, 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 August to fly from Allentown, when ticket prices are also cheap, with an average price of $216.

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 $158. 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 $281.

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 $257.

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 $326 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 $247 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 August 2026, prices for Allentown to Denver flights are approximately 9% 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	$99
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 $99. The best round-trip flight deal from Allentown to Denver found on momondo in the last 72 hours is $164.

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?
The number of operators available for flights from Allentown-Bethlehem Airport to Denver Intl Airport is 4 as of August 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 Airbus A320-100/200 (40.81% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (17.30%), Airbus A321neo (11.08%), and Boeing 737-800 (6.76%).
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 70% of the total bookings. Other popular airlines include American Airlines with 18%, Delta with 8%, 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 $143	Free Cancellation	Rating 7.3 677 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $177	Free Cancellation	Rating 7.4 10,112 reviews	Search United Airlines flights
American Airlines	PriceFrom $185	Free Cancellation	Rating 7.1 11,939 reviews	Search American Airlines flights
Delta	PriceFrom $244	Free Cancellation	Rating 7.8 8,509 reviews	Search Delta flights

Breckenridge

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Black Hawk

Aurora

Fort Collins

Boulder

Westminster

Longmont

Manitou Springs

Lakewood

Greeley

Keystone

Thornton

Cripple Creek

Centennial

Littleton

Englewood

Frisco

Winter Park

Golden

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 $57

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 8/31. 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

momondo Fare Finder

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

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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

Fly to other destinations from Allentown

According to popular flight searches on momondo this year

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