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

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

How many flights depart from Denver to Allentown on average per week?

The number of flights available between Denver and Allentown is 2 per week as of June 2026. The most frequent departure day is Mon, with 50% of weekly flights leaving on this day.

What airlines fly to Allentown?

United Airlines, Frontier and American Airlines are the top three most popular airlines that fly to Allentown from Denver according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Allentown. Keep in mind that there are 7 different airlines that fly to Allentown on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Denver Intl Airport to Allentown-Bethlehem Airport are refreshed on a daily basis.

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

The number of operators available for flights from Denver Intl Airport to Allentown-Bethlehem Airport is 3 as of June 2026.

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

What documentation or ID do you need to fly to Allentown-Bethlehem Airport?

The travel and health documents you'll need for your trip to Allentown-Bethlehem 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 Allentown-Bethlehem Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$89 Cheap Flights from Denver to Allentown in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $270 to $403. The lowest price recently found on this route was $123.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Allentown

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:36 am - 3:08 pm

DEN

ABE

3h 32mnonstop

7:30 am - 9:16 am

ABE

DEN

3h 46mnonstop

$123Allegiant Air

Fri, Sep 11 - Mon, Sep 14

5:47 pm - 11:15 pm

DEN

ABE

3h 28mnonstop

2:54 pm - 4:56 pm

ABE

DEN

4h 02mnonstop

$147Allegiant Air

Mon, Aug 3 - Mon, Aug 17

5:46 pm - 11:14 pm

DEN

ABE

3h 28mnonstop

7:00 am - 8:52 am

ABE

DEN

3h 52mnonstop

$186Allegiant Air

Fri, Aug 14 - Fri, Aug 28

5:46 pm - 11:14 pm

DEN

ABE

3h 28mnonstop

2:54 pm - 4:56 pm

ABE

DEN

4h 02mnonstop

$209Allegiant Air

Fri, Aug 7 - Mon, Aug 17

5:46 pm - 11:14 pm

DEN

ABE

3h 28mnonstop

2:54 pm - 4:56 pm

ABE

DEN

4h 02mnonstop

$223Allegiant Air

Mon, Aug 10 - Mon, Aug 17

9:36 am - 3:08 pm

DEN

ABE

3h 32mnonstop

3:32 pm - 10:33 pm

ABE

DEN

33h 01m

2 stops

$245Multiple Airlines

Fri, Sep 11 - Mon, Oct 5

5:46 pm - 11:14 pm

DEN

ABE

3h 28mnonstop

7:00 am - 8:52 am

ABE

DEN

3h 52mnonstop

$267Allegiant Air

Mon, Aug 17 - Fri, Aug 21

8:55 am - 8:34 am

DEN

ABE

21h 39m

2 stops

7:30 am - 9:16 am

ABE

DEN

3h 46mnonstop

$276Allegiant Air

Thu, Sep 17 - Mon, Sep 21

5:46 pm - 11:14 pm

DEN

ABE

3h 28mnonstop

5:25 pm - 10:05 pm

ABE

DEN

30h 40m

2 stops

$283Multiple Airlines

Fri, Aug 14 - Fri, Aug 28

10:20 am - 3:48 pm

DEN

ABE

3h 28mnonstop

2:57 pm - 4:57 pm

ABE

DEN

4h 00mnonstop

$292Allegiant Air

Fri, Jul 24 - Mon, Aug 3

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Allegiant Air flights from Denver to Allentown

Our best Allegiant Air deals on Denver to Allentown flight tickets

Allegiant Air

Sep 11

DEN9:36 amDenver Intl

3h 32m

ABE3:08 pmAllentown-Bethlehem

Sep 14

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

$123

Allegiant Air

Aug 3

DEN5:47 pmDenver Intl

3h 28m

ABE11:15 pmAllentown-Bethlehem

Aug 17

ABE2:54 pmAllentown-Bethlehem

4h 02m

DEN4:56 pmDenver Intl

$147

Allegiant Air

Aug 14

DEN5:46 pmDenver Intl

3h 28m

ABE11:14 pmAllentown-Bethlehem

Aug 28

ABE7:00 amAllentown-Bethlehem

3h 52m

DEN8:52 amDenver Intl

$186

Delta flights from Denver to Allentown

Our best Delta deals on Denver to Allentown flight tickets

Delta

Jul 8

DEN2:10 pmDenver Intl

6h 58m

1 stop

ABE11:08 pmAllentown-Bethlehem

Jul 18

ABE6:05 pmAllentown-Bethlehem

7h 59m

1 stop

DEN12:04 amDenver Intl

$497

Delta

Jul 9

DEN2:10 pmDenver Intl

6h 58m

1 stop

ABE11:08 pmAllentown-Bethlehem

Jul 18

ABE6:05 pmAllentown-Bethlehem

7h 59m

1 stop

DEN12:04 amDenver Intl

$511

Delta

Jul 6

DEN1:15 pmDenver Intl

7h 53m

1 stop

ABE11:08 pmAllentown-Bethlehem

Jul 18

ABE6:05 pmAllentown-Bethlehem

7h 59m

1 stop

DEN12:04 amDenver Intl

$518

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Mon 9/14

7:30 am-9:16 am

Nonstop3h 46m

$123

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Mon 8/3

5:47 pm-11:15 pm

Nonstop3h 28m

Allentown-Bethlehem

Mon 8/17

2:54 pm-4:56 pm

Nonstop4h 02m

$147

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 8/14

5:46 pm-11:14 pm

Nonstop3h 28m

Allentown-Bethlehem

Fri 8/28

7:00 am-8:52 am

Nonstop3h 52m

$186

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 8/7

5:46 pm-11:14 pm

Nonstop3h 28m

Allentown-Bethlehem

Mon 8/17

2:54 pm-4:56 pm

Nonstop4h 02m

$209

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Mon 8/10

5:46 pm-11:14 pm

Nonstop3h 28m

Allentown-Bethlehem

Mon 8/17

2:54 pm-4:56 pm

Nonstop4h 02m

$223

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 9/11

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Mon 10/5

3:32 pm-10:33 pm

2 stops33h 01m

$245

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Mon 8/17

5:46 pm-11:14 pm

Nonstop3h 28m

Allentown-Bethlehem

Fri 8/21

7:00 am-8:52 am

Nonstop3h 52m

$267

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Thu 9/17

8:55 am-8:34 am

2 stops21h 39m

Allentown-Bethlehem

Mon 9/21

7:30 am-9:16 am

Nonstop3h 46m

$276

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 8/14

5:46 pm-11:14 pm

Nonstop3h 28m

Allentown-Bethlehem

Fri 8/28

5:25 pm-10:05 pm

2 stops30h 40m

$283

DenverAllentown

DEN - ABE

DENABE

Denver Intl

Fri 7/24

10:20 am-3:48 pm

Nonstop3h 28m

Allentown-Bethlehem

Mon 8/3

2:57 pm-4:57 pm

Nonstop4h 00m

$292

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 Denver to Allentown

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

Other information

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

What is the cheapest month to fly to Allentown?

The month of October is, on average, the cheapest month to fly to Allentown from Denver, with most prices found around $186. If you aren’t able to travel to Allentown during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $206.

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

The cheapest day to depart from Denver to Allentown is on a Thursday when prices can be found for as low as $188. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Allentown on Monday is $299.

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

In the afternoon is the cheapest time of day to fly from Denver to Allentown when you can find flight prices for as low as $169. Flying to Allentown in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $205.

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

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

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

There is only 1 cabin class available to choose from on Denver to Allentown 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 Denver to Allentown flights?

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

How have Denver to Allentown flight prices changed over time?

When to book flights from Denver to Allentown

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

Estimated round-trip price

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

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

Best Price Found	$145
Fastest flight time	3h 27m
Direct flights	Tue and Sat
Airports in Allentown	1 airport

The best one-way flight to Allentown from Denver in the past 72 hours is $145. The best round-trip flight deal from Denver to Allentown found on momondo in the last 72 hours is $167.

The fastest flight from Denver to Allentown takes 3h 27m

Direct flights go from Denver to Allentown on Tuesday and Saturday. The only airline offering direct flights is Allegiant Air.

There is 1 airport in Allentown. From Denver there are direct flights to Allentown-Bethlehem (ABE).

Search flight deals

Frequently asked questions about flying from Denver to Allentown

How far is Denver Intl to Allentown-Bethlehem by plane?
The straight-line distance from Denver Intl to Allentown-Bethlehem is 1551.0 mi. Typically, this will take 3h 27m by plane in normal conditions.
When did momondo last update prices for flights from Denver Intl Airport to Allentown-Bethlehem Airport?
Prices for flights from Denver Intl Airport to Allentown-Bethlehem Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Denver Intl Airport to Allentown-Bethlehem Airport?
The number of operators available for flights from Denver Intl Airport to Allentown-Bethlehem Airport is 3 as of June 2026.
How old do you have to be to fly from Denver Intl Airport to Allentown-Bethlehem 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 Denver Intl Airport to Allentown-Bethlehem Airport.
What documentation or ID do you need to fly to Allentown-Bethlehem Airport?
The travel and health documents you'll need for your trip to Allentown-Bethlehem 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 Allentown-Bethlehem 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 Denver to Allentown?
Based on momondo bookings for flights between Denver and Allentown, the leading plane model is Airbus A320-100/200, making up 46.55% of the total bookings. Other popular models include Airbus A321neo with 13.79%, Airbus A320neo with 8.62%, and Boeing 737-800 with 8.62%.
What is the most popular airline from Denver to Allentown?
momondo data reveals that the most frequently booked airline on the route from Denver to Allentown is Allegiant Air, representing 53% of all bookings. The subsequent popular airlines are American Airlines at 36% and United Airlines at 11%.

Best airlines flying from Denver to Allentown

Compare and see reviews for airlines that fly from Denver to Allentown with momondo

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $130	Free Cancellation	Rating 7.3 693 reviews	Search Allegiant Air flights
American Airlines	PriceFrom $178	Free Cancellation	Rating 7.1 11,776 reviews	Search American Airlines flights
United Airlines	PriceFrom $188	Free Cancellation	Rating 7.4 9,896 reviews	Search United Airlines flights

Allegiant Air Flights From Denver to Allentown
Allegiant Air flies from Denver to Allentown around 2 times per week, with 693 momondo users rating the airline 7.3/10. The cheapest Allegiant Air deal from Denver to Allentown in the last 72 hours was $130 (round-trip), much lower than the average airfare cost of $205 for Allegiant Air flights on this route.

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Why use momondo?

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

Finding the right flight to Allentown from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Allentown quick and easy, saving you time and money.

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

All flight searches from Denver to Allentown on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Denver to Allentown.

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

Yes momondo offers price alerts on flights to Allentown from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.