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

Delta, American Airlines, 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 46% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 8 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 November 2025, 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 2025/26

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Cheap round-trip flights

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5:14 pm - 11:19 pmABE-DEN

8h 05m1 stop

6:21 am - 3:53 pmDEN-ABE

7h 32m1 stop

$218American Airlines

Find Deal

Sat, Dec 6 - Mon, Dec 8

5:14 pm - 11:19 pmABE-DEN

8h 05m1 stop

9:11 am - 10:58 pmDEN-ABE

11h 47m2 stops

$245American Airlines

Find Deal

Sat, Dec 6 - Mon, Dec 8

5:58 pm - 12:27 amABE-DEN

8h 29m1 stop

1:12 pm - 10:47 pmDEN-ABE

7h 35m1 stop

$253Delta

Find Deal

Wed, Feb 18 - Wed, Feb 25

3:23 pm - 9:50 amABE-DEN

20h 27m1 stop

11:46 am - 3:15 pmDEN-ABE

25h 29m2 stops

$256Multiple Airlines

Find Deal

Fri, Jan 9 - Tue, Jan 13

6:00 pm - 12:07 amABE-DEN

8h 07m1 stop

7:00 am - 5:14 pmDEN-ABE

8h 14m1 stop

$257Delta

Find Deal

Mon, Dec 8 - Sun, Dec 14

5:58 pm - 10:52 pmABE-DEN

6h 54m1 stop

1:12 pm - 10:47 pmDEN-ABE

7h 35m1 stop

$263Delta

Find Deal

Wed, Feb 18 - Thu, Feb 26

5:58 pm - 10:52 pmABE-DEN

6h 54m1 stop

1:12 pm - 10:47 pmDEN-ABE

7h 35m1 stop

$269Delta

Find Deal

Tue, Feb 24 - Wed, Feb 25

5:07 pm - 11:38 pmABE-DEN

8h 31m1 stop

6:00 am - 1:55 pmDEN-ABE

5h 55m1 stop

$289United Airlines

Find Deal

Sat, Dec 20 - Sat, Jan 3

7:00 am - 9:10 amABE-DEN

28h 10m1 stop

11:59 pm - 10:24 pmDEN-ABE

20h 25m2 stops

$291Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

6:33 am - 10:39 amABE-DEN

6h 06m1 stop

7:45 am - 4:48 pmDEN-ABE

7h 03m1 stop

$369United Airlines

Find Deal

Tue, Feb 24 - Sun, Mar 1

Delta flights from Allentown to Colorado

Our best Delta deals on Allentown to Colorado flight tickets

Delta

Feb 18

ABE5:58 pmAllentown-Bethlehem

8h 29m

1 stop

DEN12:27 amDenver Intl

Feb 25

DEN1:12 pmDenver Intl

7h 35m

1 stop

ABE10:47 pmAllentown-Bethlehem

$253

Find similar

Delta

Dec 8

ABE6:00 pmAllentown-Bethlehem

8h 07m

1 stop

DEN12:07 amDenver Intl

Dec 14

DEN7:00 amDenver Intl

8h 14m

1 stop

ABE5:14 pmAllentown-Bethlehem

$257

Find similar

Delta

Feb 18

ABE5:58 pmAllentown-Bethlehem

6h 54m

1 stop

DEN10:52 pmDenver Intl

Feb 26

DEN1:12 pmDenver Intl

7h 35m

1 stop

ABE10:47 pmAllentown-Bethlehem

$263

Find similar

American Airlines flights from Allentown to Colorado

Our best American Airlines deals on Allentown to Colorado flight tickets

American Airlines

Dec 6

ABE5:14 pmAllentown-Bethlehem

8h 05m

1 stop

DEN11:19 pmDenver Intl

Dec 8

DEN6:21 amDenver Intl

7h 32m

1 stop

ABE3:53 pmAllentown-Bethlehem

$218

Find similar

American Airlines

Dec 6

ABE5:14 pmAllentown-Bethlehem

8h 05m

1 stop

DEN11:19 pmDenver Intl

Dec 8

DEN9:11 amDenver Intl

11h 47m

2 stops

ABE10:58 pmAllentown-Bethlehem

$245

Find similar

American Airlines

Dec 5

ABE4:30 pmAllentown-Bethlehem

8h 35m

1 stop

DEN11:05 pmDenver Intl

Dec 7

DEN6:45 amDenver Intl

7h 59m

1 stop

ABE4:44 pmAllentown-Bethlehem

$307

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 12/6

5:14 pm-11:19 pm

1 stop8h 05m

Denver Intl

Mon 12/8

6:21 am-3:53 pm

1 stop7h 32m

$218

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 12/6

5:14 pm-11:19 pm

1 stop8h 05m

Denver Intl

Mon 12/8

9:11 am-10:58 pm

2 stops11h 47m

$245

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 2/18

5:58 pm-12:27 am

1 stop8h 29m

Denver Intl

Wed 2/25

1:12 pm-10:47 pm

1 stop7h 35m

$253

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Fri 1/9

3:23 pm-9:50 am

1 stop20h 27m

Denver Intl

Tue 1/13

11:46 am-3:15 pm

2 stops25h 29m

$256

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Mon 12/8

6:00 pm-12:07 am

1 stop8h 07m

Denver Intl

Sun 12/14

7:00 am-5:14 pm

1 stop8h 14m

$257

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Wed 2/18

5:58 pm-10:52 pm

1 stop6h 54m

Denver Intl

Thu 2/26

1:12 pm-10:47 pm

1 stop7h 35m

$263

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 2/24

5:58 pm-10:52 pm

1 stop6h 54m

Denver Intl

Wed 2/25

1:12 pm-10:47 pm

1 stop7h 35m

$269

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Sat 12/20

5:07 pm-11:38 pm

1 stop8h 31m

Denver Intl

Sat 1/3

6:00 am-1:55 pm

1 stop5h 55m

$289

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Fri 12/5

7:00 am-9:10 am

1 stop28h 10m

Denver Intl

Sun 12/7

11:59 pm-10:24 pm

2 stops20h 25m

$291

AllentownDenver

ABE - DEN

ABEDEN

Allentown-Bethlehem

Tue 2/24

6:33 am-10:39 am

1 stop6h 06m

Denver Intl

Sun 3/1

7:45 am-4:48 pm

1 stop7h 03m

$369

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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

Other information

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 $232.

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

The cheapest day to depart from Allentown to Colorado is on a Friday when prices can be found for as low as $189. On the other hand, Tuesday 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 $297.

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 $219. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $431 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 $329 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 $202 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	$106
Direct flights	None

The best one-way flight to Colorado from Allentown in the past 72 hours is $106. The best round-trip flight deal from Allentown to Colorado found on momondo in the last 72 hours is $228.

There are no direct flights from Allentown to Colorado. There are no popular flight routes from Allentown to Colorado.

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 November 2025, 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 54.55% of the total bookings. Other popular models include Airbus A321neo with 9.09%, Airbus A320neo with 7.79%, and Boeing 737-800 with 6.93%.

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 5.8 3,116 reviews	Search Frontier flights
Allegiant Air	PriceFrom $120	Free Cancellation	Rating 7.2 694 reviews	Search Allegiant Air flights
American Airlines	PriceFrom $198	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines flights
United Airlines	PriceFrom $269	Free Cancellation	Rating 7.4 8,998 reviews	Search United Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 7.9 8,002 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.

An easier way to manage your Colorado trip

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Find better results for your trip to Colorado

Popular cities in Colorado

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Cheap flights from Allentown to Colorado from $119

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 Colorado departing on 12/3. 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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Filter for what you want

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Delta flights from Allentown to Colorado

Our best Delta deals on Allentown to Colorado flight tickets

American Airlines flights from Allentown to Colorado

Our best American Airlines deals on Allentown to Colorado flight tickets

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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

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 $232.

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

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 $219. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $431 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?

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.

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

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

What airlines fly 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

Direct flights

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

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

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

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

What is the most popular plane model from Allentown to Colorado?

Best airlines flying from Allentown to Colorado

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

Why use momondo?

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

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

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

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

An easier way to manage your Colorado 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 Colorado

Popular cities in Colorado

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