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

Delta, Allegiant Air, and United Airlines are the most popular carriers operating from Allentown-Bethlehem to Colorado

What airlines fly to Colorado?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Colorado from Allentown 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 Colorado. Keep in mind that there are 7 different airlines that fly to Colorado 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 Colorado?

Prices for flights from Allentown-Bethlehem Airport to Colorado are updated daily.

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

As of February 2026, there are 5 operators available to choose from for flights from Allentown-Bethlehem Airport to Colorado.

How old do you have to be to fly from Allentown-Bethlehem Airport to Colorado?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Allentown-Bethlehem Airport to Colorado.

What documentation or ID do you need to fly to Colorado?

The travel and health documents required for your trip to Colorado can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Colorado. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$119 Cheap Flights from Allentown to Colorado in 2026

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Find the cheapest flights from Allentown to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:50 pm - 4:52 pm

ABE

DEN

4h 02mnonstop

10:22 am - 3:49 pm

DEN

ABE

3h 27mnonstop

$143Allegiant Air

Mon, May 25 - Fri, Jun 5

2:50 pm - 4:52 pm

ABE

DEN

4h 02mnonstop

5:42 pm - 11:04 pm

DEN

ABE

3h 22mnonstop

$163Allegiant Air

Mon, May 25 - Fri, May 29

8:30 am - 11:03 pm

ABE

DEN

40h 33m

2 stops

5:42 pm - 11:04 pm

DEN

ABE

3h 22mnonstop

$201Multiple Airlines

Mon, May 11 - Fri, May 22

8:30 am - 10:59 pm

ABE

DEN

16h 29m

1 stop

5:42 pm - 11:04 pm

DEN

ABE

3h 22mnonstop

$213Multiple Airlines

Mon, May 11 - Fri, May 22

5:38 pm - 10:05 pm

ABE

DEN

6h 27m

1 stop

6:00 am - 1:38 pm

DEN

ABE

5h 38m

1 stop

$215United Airlines

Tue, Apr 28 - Sat, May 9

5:38 pm - 9:50 pm

ABE

COS

6h 12m

1 stop

11:42 am - 9:17 pm

COS

ABE

7h 35m

1 stop

$302United Airlines

Tue, Apr 14 - Sat, Apr 18

12:57 pm - 10:25 pm

ABE

COS

11h 28m

2 stops

1:39 pm - 12:22 am

COS

ABE

8h 43m

2 stops

$415American Airlines

Tue, Apr 14 - Sat, Apr 18

6:04 am - 4:23 pm

ABE

COS

12h 19m

2 stops

1:39 pm - 12:22 am

COS

ABE

8h 43m

2 stops

$467American Airlines

Wed, Apr 22 - Sat, Apr 25

6:30 am - 12:59 pm

ABE

COS

8h 29m

1 stop

1:40 pm - 10:56 pm

COS

ABE

7h 16m

1 stop

$527Delta

Sat, Jun 20 - Thu, Jun 25

12:53 pm - 9:54 pm

ABE

GJT

11h 01m

2 stops

7:40 am - 10:18 pm

GJT

ABE

12h 38m

2 stops

$1,226Delta

Mon, May 4 - Fri, May 8

Allegiant Air flights from Allentown to Colorado

Our best Allegiant Air deals on Allentown to Colorado flight tickets

Allegiant Air

May 25

ABE2:50 pmAllentown-Bethlehem

4h 02m

DEN4:52 pmDenver Intl

Jun 5

DEN10:22 amDenver Intl

3h 27m

ABE3:49 pmAllentown-Bethlehem

$143

Allegiant Air

May 25

ABE2:50 pmAllentown-Bethlehem

4h 02m

DEN4:52 pmDenver Intl

May 29

DEN5:42 pmDenver Intl

3h 22m

ABE11:04 pmAllentown-Bethlehem

$163

Allegiant Air

May 25

ABE2:50 pmAllentown-Bethlehem

4h 02m

DEN4:52 pmDenver Intl

Jun 1

DEN5:42 pmDenver Intl

3h 22m

ABE11:04 pmAllentown-Bethlehem

$185

United Airlines flights from Allentown to Colorado

Our best United Airlines deals on Allentown to Colorado flight tickets

United Airlines

Apr 28

ABE5:38 pmAllentown-Bethlehem

6h 27m

1 stop

DEN10:05 pmDenver Intl

May 9

DEN6:00 amDenver Intl

5h 38m

1 stop

ABE1:38 pmAllentown-Bethlehem

$215

United Airlines

Apr 15

ABE10:35 amAllentown-Bethlehem

7h 25m

1 stop

DEN4:00 pmDenver Intl

Apr 18

DEN1:25 pmDenver Intl

5h 52m

1 stop

ABE9:17 pmAllentown-Bethlehem

$260

United Airlines

Apr 14

ABE5:38 pmAllentown-Bethlehem

6h 12m

1 stop

COS9:50 pmColorado Springs

Apr 18

COS11:42 amColorado Springs

7h 35m

1 stop

ABE9:17 pmAllentown-Bethlehem

$302

Fly from

Fly to

Route

Depart

Return

Price

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 5/25

2:50 pm-4:52 pm

Nonstop4h 02m

Denver Intl

Fri 6/5

10:22 am-3:49 pm

Nonstop3h 27m

$143

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 5/25

2:50 pm-4:52 pm

Nonstop4h 02m

Denver Intl

Fri 5/29

5:42 pm-11:04 pm

Nonstop3h 22m

$163

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 5/11

8:30 am-11:03 pm

2 stops40h 33m

Denver Intl

Fri 5/22

5:42 pm-11:04 pm

Nonstop3h 22m

$201

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 5/11

8:30 am-10:59 pm

1 stop16h 29m

Denver Intl

Fri 5/22

5:42 pm-11:04 pm

Nonstop3h 22m

$213

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 4/28

5:38 pm-10:05 pm

1 stop6h 27m

Denver Intl

Sat 5/9

6:00 am-1:38 pm

1 stop5h 38m

$215

AllentownColorado Springs

ABE - COS

ABECOS

Allentown-Bethlehem

Tue 4/14

5:38 pm-9:50 pm

1 stop6h 12m

Colorado Springs

Sat 4/18

11:42 am-9:17 pm

1 stop7h 35m

$302

AllentownColorado Springs

ABE - COS

ABECOS

Allentown-Bethlehem

Tue 4/14

12:57 pm-10:25 pm

2 stops11h 28m

Colorado Springs

Sat 4/18

1:39 pm-12:22 am

2 stops8h 43m

$415

AllentownColorado Springs

ABE - COS

ABECOS

Allentown-Bethlehem

Wed 4/22

6:04 am-4:23 pm

2 stops12h 19m

Colorado Springs

Sat 4/25

1:39 pm-12:22 am

2 stops8h 43m

$467

AllentownColorado Springs

ABE - COS

ABECOS

Allentown-Bethlehem

Sat 6/20

6:30 am-12:59 pm

1 stop8h 29m

Colorado Springs

Thu 6/25

1:40 pm-10:56 pm

1 stop7h 16m

$527

AllentownGrand Junction

ABE - GJT

ABEGJT

Allentown-Bethlehem

Mon 5/4

12:53 pm-9:54 pm

2 stops11h 01m

Grand Junction Regnl

Fri 5/8

7:40 am-10:18 pm

2 stops12h 38m

$1,226

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 Colorado

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 cheapest month to fly to Colorado?

The month of September is, on average, the cheapest month to fly to Colorado from Allentown, with most prices found around $208. The month of October is another great option to travel to Colorado, with average flight prices from Allentown averaging around $213.

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

The cheapest day to depart from Allentown to Colorado is on a Wednesday when prices can be found for as low as $128. On the other hand, Friday is the most expensive day to depart from Allentown because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $323.

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

The cheapest time of day to fly to Colorado is in the morning when flights can be purchased for as low as $211. At noon is when there is more demand to fly to Colorado, so prices are often more expensive at around $331 per ticket.

What is the cheapest Allentown-Bethlehem to Colorado flight route?

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

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Allentown when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $291 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Allentown for as low as $201 on momondo.

What cabin class options are available on Allentown-Bethlehem to Colorado flights?

There is only 1 cabin class available to choose from on Allentown-Bethlehem to Colorado 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 Colorado flights?

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

Cheap Allentown to Colorado flight deals and tips

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

Best Price Found	$133
Fastest flight time	4h 00m
Direct flights	Tue and Sat
Airports in Colorado	87 airports

The best one-way flight to Colorado from Allentown in the past 72 hours is $133. The best round-trip flight deal from Allentown to Colorado found on momondo in the last 72 hours is $204.

The fastest flight from Allentown to Colorado takes 4h 00m

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

There are 87 airports in Colorado. From Allentown there are direct flights to Denver Intl (DEN).

Search flight deals

When did momondo last update prices for flights from Allentown-Bethlehem Airport to Colorado?
Prices for flights from Allentown-Bethlehem Airport to Colorado are updated daily.
How many operators does momondo search for flights from Allentown-Bethlehem Airport to Colorado?
As of February 2026, there are 5 operators available to choose from for flights from Allentown-Bethlehem Airport to Colorado.
How old do you have to be to fly from Allentown-Bethlehem Airport to Colorado?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Allentown-Bethlehem Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The travel and health documents required for your trip to Colorado can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Colorado. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Allentown to Colorado?
Based on momondo bookings for flights between Allentown and Colorado, the leading plane model is Airbus A320-100/200, making up 70.93% of the total bookings. Other popular models include Airbus A321neo with 5.81%, Airbus A321-100/200 with 4.65%, and Boeing 737 MAX 8 with 3.49%.

Best airlines flying from Allentown to Colorado

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $75	Free Cancellation	Rating 5.7 3,041 reviews	Search Frontier flights
Allegiant Air	PriceFrom $115	Free Cancellation	Rating 7.2 715 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $177	Free Cancellation	Rating 7.4 9,362 reviews	Search United Airlines flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,367 reviews	Search American Airlines flights
Delta	PriceFrom $256	Free Cancellation	Rating 7.9 8,245 reviews	Search Delta flights

Why use momondo?

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

It is quick and easy to find Allentown to Colorado flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Colorado that suits you.

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

Yes. momondo allows you to filter the results for Allentown to Colorado flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Colorado from Allentown. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Allentown to Colorado flights. All you need is a valid email address and we will do the rest; it is that quick and easy.