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

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

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 49% 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.

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

The number of flights available between Denver and Allentown is 1 per week as of September 2026. The most frequent departure day is Fri, with 100% of weekly flights leaving on this day.

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 September 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.

$93 Cheap Flights from Denver to Allentown in 2026

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.

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

3h 28mnonstop

6:30 am - 8:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

$159Allegiant Air

Fri, Oct 2 - Mon, Oct 5

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

3h 32mnonstop

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

3h 46mnonstop

$173Allegiant Air

Fri, Sep 25 - Mon, Sep 28

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

3h 32mnonstop

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

3h 46mnonstop

$181Allegiant Air

Fri, Sep 25 - Mon, Sep 28

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

3h 28mnonstop

3:32 pm - 8:04 amABE Allentown-Bethlehem-DEN Denver Intl

42h 32m2 stops Orlando Atlanta Hartsfield-Jackson

$253Multiple Airlines

Fri, Oct 2 - Mon, Oct 5

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

3h 32mnonstop

9:55 pm - 5:16 pmABE Allentown-Bethlehem-DEN Denver Intl

21h 21m1 stop Nashville Intl

$266Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

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

3h 32mnonstop

9:55 pm - 7:52 amABE Allentown-Bethlehem-DEN Denver Intl

35h 57m2 stops Nashville Intl Orlando

$301Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

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

7h 55m1 stop Chicago O'Hare Intl

6:44 pm - 10:52 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 08m1 stop Chicago O'Hare Intl

$341American Airlines

Wed, Oct 7 - Wed, Oct 14

8:00 am - 6:14 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 14m1 stop Chicago O'Hare Intl

6:47 pm - 12:36 amABE Allentown-Bethlehem-DEN Denver Intl

7h 49m1 stop Chicago O'Hare Intl

$341American Airlines

Thu, Oct 22 - Mon, Oct 26

11:15 am - 8:55 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 40m1 stop Chicago O'Hare Intl

6:10 am - 10:35 amABE Allentown-Bethlehem-DEN Denver Intl

6h 25m1 stop Chicago O'Hare Intl

$451United Airlines

Fri, Jan 8 - Sun, Jan 10

11:15 am - 8:55 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 40m1 stop Chicago O'Hare Intl

5:20 pm - 11:47 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 27m1 stop Chicago O'Hare Intl

$458United Airlines

Fri, Jan 8 - Sun, Jan 10

Cheap last minute flights

Enter your travel dates to find the best prices.

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

3h 32mnonstop

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

3h 46mnonstop

$259Allegiant Air

Fri, Sep 18 - Mon, Sep 21

6:30 am - 11:23 pmDEN Denver Intl-ABE Allentown-Bethlehem

14h 53m2 stops Dallas/Fort Worth Nashville Intl

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

3h 46mnonstop

$357Multiple Airlines

Fri, Sep 18 - Mon, Sep 21

6:38 pm - 11:23 pmDEN Denver Intl-ABE Allentown-Bethlehem

26h 45m2 stops Las Vegas Harry Reid Intl Nashville Intl

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

3h 46mnonstop

$366Multiple Airlines

Thu, Sep 17 - Mon, Sep 21

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

3h 32mnonstop

9:55 pm - 10:07 amABE Allentown-Bethlehem-DEN Denver Intl

38h 12m2 stops Nashville Intl Las Vegas Harry Reid Intl

$391Multiple Airlines

Fri, Sep 18 - Sun, Sep 20

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

6h 22m1 stop Chicago O'Hare Intl

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

9h 07m1 stop Chicago O'Hare Intl

$499American Airlines

Tue, Sep 15 - Wed, Sep 16

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

7h 24m1 stop Chicago O'Hare Intl

9:13 am - 5:42 pmABE Allentown-Bethlehem-DEN Denver Intl

10h 29m2 stops Chicago O'Hare Intl Dallas/Fort Worth

$504American Airlines

Tue, Sep 15 - Wed, Sep 16

12:29 pm - 11:22 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 53m2 stops Chicago O'Hare Intl Charlotte Douglas

9:13 am - 5:42 pmABE Allentown-Bethlehem-DEN Denver Intl

10h 29m2 stops Chicago O'Hare Intl Dallas/Fort Worth

$558American Airlines

Tue, Sep 15 - Wed, Sep 16

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

7h 11m1 stop Chicago O'Hare Intl

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

8h 11m1 stop Chicago O'Hare Intl

$609United Airlines

Tue, Sep 15 - Fri, Sep 25

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

7h 11m1 stop Chicago O'Hare Intl

5:36 pm - 11:28 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 52m1 stop Chicago O'Hare Intl

$609United Airlines

Tue, Sep 15 - Wed, Sep 23

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

7h 11m1 stop Chicago O'Hare Intl

5:36 pm - 11:28 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 52m1 stop Chicago O'Hare Intl

$723United Airlines

Tue, Sep 15 - Mon, Sep 21

Cheap direct flights

Enter your travel dates to find the best prices.

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

3h 28mnonstop

6:30 am - 8:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

$159Allegiant Air

Fri, Oct 2 - Mon, Oct 5

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

3h 32mnonstop

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

3h 46mnonstop

$173Allegiant Air

Fri, Sep 25 - Mon, Sep 28

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

3h 32mnonstop

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

3h 46mnonstop

$181Allegiant Air

Fri, Sep 25 - Mon, Sep 28

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

3h 28mnonstop

6:30 am - 8:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

$196Allegiant Air

Fri, Oct 2 - Mon, Oct 5

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

3h 28mnonstop

6:30 am - 8:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

$206Allegiant Air

Fri, Oct 2 - Mon, Oct 5

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

3h 28mnonstop

6:30 am - 8:24 amABE Allentown-Bethlehem-DEN Denver Intl

3h 54mnonstop

$210Allegiant Air

Fri, Oct 2 - Mon, Oct 5

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

3h 32mnonstop

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

3h 46mnonstop

$216Allegiant Air

Fri, Sep 25 - Mon, Sep 28

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

3h 28mnonstop

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

3h 54mnonstop

$337Allegiant Air

Fri, Oct 16 - Mon, Oct 19

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

3h 28mnonstop

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

3h 54mnonstop

$344Allegiant Air

Fri, Oct 16 - Mon, Oct 19

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

3h 28mnonstop

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

3h 54mnonstop

$347Allegiant Air

Fri, Oct 16 - Mon, Oct 19

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Allegiant Air flights from Denver to Allentown

Our best Allegiant Air deals on Denver to Allentown flight tickets

Allegiant Air

Oct 2

DEN10:14 amDenver Intl

3h 28m

ABE3:42 pmAllentown-Bethlehem

Oct 5

ABE6:30 amAllentown-Bethlehem

3h 54m

DEN8:24 amDenver Intl

$159

Allegiant Air

Sep 25

DEN9:36 amDenver Intl

3h 32m

ABE3:08 pmAllentown-Bethlehem

Sep 28

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

$173

Allegiant Air

Sep 25

DEN9:36 amDenver Intl

3h 32m

ABE3:08 pmAllentown-Bethlehem

Sep 28

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

$181

American Airlines flights from Denver to Allentown

Our best American Airlines deals on Denver to Allentown flight tickets

American Airlines

Oct 7

DEN12:17 pmDenver Intl

7h 55m

1 stop

ABE10:12 pmAllentown-Bethlehem

Oct 14

ABE6:44 pmAllentown-Bethlehem

6h 08m

1 stop

DEN10:52 pmDenver Intl

$341

American Airlines

Oct 2

DEN10:47 amDenver Intl

10h 35m

2 stops

ABE11:22 pmAllentown-Bethlehem

Oct 5

ABE5:14 pmAllentown-Bethlehem

7h 44m

1 stop

DEN10:58 pmDenver Intl

$357

American Airlines

Oct 7

DEN12:17 pmDenver Intl

7h 55m

1 stop

ABE10:12 pmAllentown-Bethlehem

Oct 14

ABE6:00 amAllentown-Bethlehem

10h 21m

2 stops

DEN2:21 pmDenver Intl

$367

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 10/2

10:14 am-3:42 pm

Nonstop3h 28m

Allentown-Bethlehem

Mon 10/5

6:30 am-8:24 am

Nonstop3h 54m

$159

Quickest round-trip

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 9/25

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Mon 9/28

7:30 am-9:16 am

Nonstop3h 46m

$173

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 9/25

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Mon 9/28

7:30 am-9:16 am

Nonstop3h 46m

$181

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 10/2

10:14 am-3:42 pm

Nonstop3h 28m

Allentown-Bethlehem

Mon 10/5

3:32 pm-8:04 am

2 stops42h 32m

$253

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 9/25

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Sun 9/27

9:55 pm-5:16 pm

1 stop21h 21m

$266

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 9/25

9:36 am-3:08 pm

Nonstop3h 32m

Allentown-Bethlehem

Sun 9/27

9:55 pm-7:52 am

2 stops35h 57m

$301

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Wed 10/7

12:17 pm-10:12 pm

1 stop7h 55m

Allentown-Bethlehem

Wed 10/14

6:44 pm-10:52 pm

1 stop6h 08m

$341

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Thu 10/22

8:00 am-6:14 pm

1 stop8h 14m

Allentown-Bethlehem

Mon 10/26

6:47 pm-12:36 am

1 stop7h 49m

$341

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 1/8

11:15 am-8:55 pm

1 stop7h 40m

Allentown-Bethlehem

Sun 1/10

6:10 am-10:35 am

1 stop6h 25m

$451

DenverAllentown

DEN Denver Intl - ABE Allentown-Bethlehem

DENABE

Denver Intl

Fri 1/8

11:15 am-8:55 pm

1 stop7h 40m

Allentown-Bethlehem

Sun 1/10

5:20 pm-11:47 pm

1 stop8h 27m

$458

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?

Prices are currently low for flights on this route.

Typical prices usually range from $205 to $370.
The lowest price recently found on this route was $159.

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 $188. 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 $205.

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

The cheapest day to depart from Denver to Allentown is on a Friday when prices can be found for as low as $173. 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 $289.

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 $188. 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 $227.

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	$93
Fastest flight time	3h 28m
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 $93. The best round-trip flight deal from Denver to Allentown found on momondo in the last 72 hours is $159.

The fastest flight from Denver to Allentown takes 3h 28m

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 28m 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 September 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 Boeing 737 MAX 8, making up 29.41% of the total bookings. Other popular models include Airbus A320-100/200 with 22.06%, Boeing 737-800 with 13.24%, and Airbus A321neo with 10.29%.
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 51% of all bookings. The subsequent popular airlines are American Airlines at 38% 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 $124	Free Cancellation	Rating 7.3 679 reviews	Search Allegiant Air flights
American Airlines	PriceFrom $178	Free Cancellation	Rating 7.1 12,050 reviews	Search American Airlines flights
United Airlines	PriceFrom $188	Free Cancellation	Rating 7.4 10,205 reviews	Search United Airlines flights

Allegiant Air Flights From Denver to Allentown
Allegiant Air flies from Denver to Allentown around 1 time per week, with 679 momondo users rating the airline 7.3/10. The cheapest Allegiant Air deal from Denver to Allentown in the last 72 hours was $124 (round-trip), much lower than the average airfare cost of $205 for Allegiant Air flights on this route.

Lehighton

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.