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 54% 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.

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

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

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 September 2026, there are 4 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.

$100 Cheap Flights from Allentown to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

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.

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

3h 46mnonstop

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

3h 28mnonstop

$181Allegiant Air

Mon, Sep 28 - Fri, Oct 2

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

3h 54mnonstop

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

3h 28mnonstop

$214Allegiant Air

Mon, Oct 5 - Fri, Oct 16

3:32 pm - 7:52 amABE Allentown-Bethlehem-DEN Denver Intl

18h 20m1 stop Orlando

7:12 pm - 3:44 pmDEN Denver Intl-ABE Allentown-Bethlehem

18h 32m1 stop Orlando

$241Multiple Airlines

Mon, Oct 5 - Tue, Oct 6

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

3h 54mnonstop

6:56 pm - 2:34 pmDEN Denver Intl-ABE Allentown-Bethlehem

17h 38m1 stop Tampa

$257Multiple Airlines

Mon, Oct 5 - Mon, Oct 5

6:15 pm - 12:26 amABE Allentown-Bethlehem-DEN Denver Intl

8h 11m1 stop Chicago O'Hare Intl

3:41 pm - 11:24 pmDEN Denver Intl-ABE Allentown-Bethlehem

5h 43m1 stop Charlotte Douglas

$341American Airlines

Thu, Dec 10 - Mon, Dec 14

6:47 pm - 10:58 pmABE Allentown-Bethlehem-DEN Denver Intl

6h 11m1 stop Chicago O'Hare Intl

9:11 am - 5:41 pmDEN Denver Intl-ABE Allentown-Bethlehem

6h 30m1 stop Chicago O'Hare Intl

$341American Airlines

Thu, Oct 29 - Tue, Nov 3

6:30 am - 1:19 pmABE Allentown-Bethlehem-DEN Denver Intl

8h 49m1 stop Atlanta Hartsfield-Jackson

8:10 am - 5:15 pmDEN Denver Intl-ABE Allentown-Bethlehem

7h 05m1 stop Atlanta Hartsfield-Jackson

$341Delta

Tue, Nov 10 - Tue, Nov 17

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

6h 29m1 stop Atlanta Hartsfield-Jackson

7:05 am - 5:15 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 10m1 stop Atlanta Hartsfield-Jackson

$341Delta

Sat, Nov 7 - Wed, Nov 18

5:36 pm - 10:44 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 08m1 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

Mon, Nov 23 - Fri, Nov 27

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

8h 11m1 stop Chicago O'Hare Intl

1:25 pm - 9:02 pmDEN Denver Intl-ABE Allentown-Bethlehem

5h 37m1 stop Chicago O'Hare Intl

$379United Airlines

Fri, Oct 23 - Sat, Oct 31

Cheap last minute flights

Enter your travel dates to find the best prices.

7:00 am - 8:46 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

10:06 am - 3:38 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 32mnonstop

$255Allegiant Air

Fri, Sep 11 - Mon, Sep 14

7:00 am - 8:46 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

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

3h 32mnonstop

$277Allegiant Air

Fri, Sep 11 - Fri, Sep 25

9:55 pm - 11:44 pmABE Allentown-Bethlehem-DEN Denver Intl

27h 49m2 stops Nashville Intl Las Vegas Harry Reid Intl

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

3h 32mnonstop

$417Multiple Airlines

Sun, Sep 13 - Fri, Sep 18

6:28 am - 12:14 pmABE Allentown-Bethlehem-COS Colorado Springs

7h 46m1 stop Atlanta Hartsfield-Jackson

12:55 pm - 10:16 pmCOS Colorado Springs-ABE Allentown-Bethlehem

7h 21m1 stop Atlanta Hartsfield-Jackson

$474Delta

Sat, Sep 12 - Sat, Sep 19

7:00 am - 8:46 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

9:19 pm - 9:37 pmDEN Denver Intl-ABE Allentown-Bethlehem

46h 18m3 stops Dallas/Fort Worth Atlanta Hartsfield-Jackson Fort Lauderdale

$480Multiple Airlines

Fri, Sep 11 - Fri, Sep 25

5:45 am - 2:39 pmABE Allentown-Bethlehem-COS Colorado Springs

10h 54m2 stops Charlotte Douglas Dallas/Fort Worth

12:37 pm - 10:18 pmCOS Colorado Springs-ABE Allentown-Bethlehem

7h 41m1 stop Chicago O'Hare Intl

$484American Airlines

Sat, Sep 12 - Sat, Sep 19

5:45 am - 2:39 pmABE Allentown-Bethlehem-COS Colorado Springs

10h 54m2 stops Charlotte Douglas Dallas/Fort Worth

10:17 am - 11:22 pmCOS Colorado Springs-ABE Allentown-Bethlehem

11h 05m2 stops Dallas/Fort Worth Charlotte Douglas

$538American Airlines

Sat, Sep 12 - Sat, Sep 19

5:36 pm - 11:29 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 53m1 stop Chicago O'Hare Intl

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

7h 11m1 stop Chicago O'Hare Intl

$599United Airlines

Tue, Sep 8 - Wed, Sep 9

5:36 pm - 11:29 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 53m1 stop Chicago O'Hare Intl

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

7h 11m1 stop Chicago O'Hare Intl

$619United Airlines

Tue, Sep 8 - Sat, Sep 19

1:50 pm - 7:05 pmABE Allentown-Bethlehem-DEN Denver Intl

7h 15m1 stop Atlanta Hartsfield-Jackson

12:10 pm - 10:16 pmDEN Denver Intl-ABE Allentown-Bethlehem

8h 06m1 stop Atlanta Hartsfield-Jackson

$739Delta

Sat, Sep 12 - Thu, Sep 17

Cheap direct flights

Enter your travel dates to find the best prices.

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

3h 46mnonstop

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

3h 28mnonstop

$181Allegiant Air

Mon, Sep 28 - Fri, Oct 2

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

3h 54mnonstop

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

3h 28mnonstop

$214Allegiant Air

Mon, Oct 5 - Fri, Oct 16

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

$222Allegiant Air

Mon, Sep 21 - Fri, Sep 25

7:00 am - 8:46 amABE Allentown-Bethlehem-DEN Denver Intl

3h 46mnonstop

10:06 am - 3:38 pmDEN Denver Intl-ABE Allentown-Bethlehem

3h 32mnonstop

$263Allegiant Air

Fri, Sep 25 - Mon, Sep 28

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

3h 54mnonstop

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

3h 28mnonstop

$268Allegiant Air

Mon, Oct 5 - Fri, Oct 9

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

3h 54mnonstop

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

3h 28mnonstop

$268Allegiant Air

Mon, Oct 5 - Fri, Oct 9

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

3h 54mnonstop

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

3h 28mnonstop

$276Allegiant Air

Mon, Oct 5 - Fri, Oct 9

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

3h 54mnonstop

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

3h 28mnonstop

$282Allegiant Air

Fri, Oct 2 - Fri, Oct 9

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

3h 54mnonstop

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

3h 28mnonstop

$286Allegiant Air

Mon, Oct 5 - Mon, Oct 12

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

3h 54mnonstop

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

3h 28mnonstop

$303Allegiant Air

Mon, Oct 5 - Mon, Oct 12

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Allegiant Air flights from Allentown to Colorado

Our best Allegiant Air deals on Allentown to Colorado flight tickets

Allegiant Air

Sep 28

ABE7:30 amAllentown-Bethlehem

3h 46m

DEN9:16 amDenver Intl

Oct 2

DEN10:14 amDenver Intl

3h 28m

ABE3:42 pmAllentown-Bethlehem

$181

Allegiant Air

Oct 5

ABE6:30 amAllentown-Bethlehem

3h 54m

DEN8:24 amDenver Intl

Oct 16

DEN10:14 amDenver Intl

3h 28m

ABE3:42 pmAllentown-Bethlehem

$214

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

$222

Delta flights from Allentown to Colorado

Our best Delta deals on Allentown to Colorado flight tickets

Delta

Oct 10

ABE6:03 pmAllentown-Bethlehem

6h 29m

1 stop

DEN10:32 pmDenver Intl

Oct 13

DEN2:36 pmDenver Intl

5h 43m

1 stop

ABE10:19 pmAllentown-Bethlehem

$341

Delta

Nov 6

ABE6:03 pmAllentown-Bethlehem

6h 29m

1 stop

DEN10:32 pmDenver Intl

Nov 17

DEN7:05 amDenver Intl

8h 10m

1 stop

ABE5:15 pmAllentown-Bethlehem

$353

Delta

Oct 26

ABE1:00 pmAllentown-Bethlehem

9h 16m

1 stop

COS8:16 pmColorado Springs

Oct 31

COS1:26 pmColorado Springs

6h 53m

1 stop

ABE10:19 pmAllentown-Bethlehem

$379

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 9/28

7:30 am-9:16 am

Nonstop3h 46m

Denver Intl

Fri 10/2

10:14 am-3:42 pm

Nonstop3h 28m

$181

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 10/5

6:30 am-8:24 am

Nonstop3h 54m

Denver Intl

Fri 10/16

10:14 am-3:42 pm

Nonstop3h 28m

$214

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 10/5

3:32 pm-7:52 am

1 stop18h 20m

Denver Intl

Tue 10/6

7:12 pm-3:44 pm

1 stop18h 32m

$241

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 10/5

6:30 am-8:24 am

Nonstop3h 54m

Denver Intl

Mon 10/5

6:56 pm-2:34 pm

1 stop17h 38m

$257

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Thu 12/10

6:15 pm-12:26 am

1 stop8h 11m

Denver Intl

Mon 12/14

3:41 pm-11:24 pm

1 stop5h 43m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Thu 10/29

6:47 pm-10:58 pm

1 stop6h 11m

Denver Intl

Tue 11/3

9:11 am-5:41 pm

1 stop6h 30m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Tue 11/10

6:30 am-1:19 pm

1 stop8h 49m

Denver Intl

Tue 11/17

8:10 am-5:15 pm

1 stop7h 05m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Sat 11/7

6:03 pm-10:32 pm

1 stop6h 29m

Denver Intl

Wed 11/18

7:05 am-5:15 pm

1 stop8h 10m

$341

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Mon 11/23

5:36 pm-10:44 pm

1 stop7h 08m

Denver Intl

Fri 11/27

7:45 am-4:56 pm

1 stop7h 11m

$359

AllentownDenver

ABE Allentown-Bethlehem - DEN Denver Intl

ABEDEN

Allentown-Bethlehem

Fri 10/23

5:43 pm-11:54 pm

1 stop8h 11m

Denver Intl

Sat 10/31

1:25 pm-9:02 pm

1 stop5h 37m

$379

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 August is, on average, the cheapest month to fly to Colorado from Allentown, with most prices found around $227. The month of October is another great option to travel to Colorado, with average flight prices from Allentown averaging around $238.

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

The cheapest day to depart from Allentown to Colorado is on a Sunday when prices can be found for as low as $194. 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 $275.

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

The cheapest time of day to fly to Colorado is at noon when flights can be purchased for as low as $250. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $263 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 from Allentown 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 $253 on momondo.

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

There is only 1 cabin class available to choose from on Allentown 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	$100
Fastest flight time	3h 46m
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 $100. The best round-trip flight deal from Allentown to Colorado found on momondo in the last 72 hours is $181.

The fastest flight from Allentown to Colorado takes 3h 46m

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

Frequently asked questions about flying from Allentown to Colorado

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 September 2026, there are 4 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 33.22% of the total bookings. Other popular models include Boeing 737 MAX 8 with 30.10%, Airbus A321neo with 9.34%, and Boeing 737-800 with 6.57%.

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
Allegiant Air	PriceFrom $146	Free Cancellation	Rating 7.3 677 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $177	Free Cancellation	Rating 7.4 10,173 reviews	Search United Airlines flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.1 12,042 reviews	Search American Airlines flights
Delta	PriceFrom $252	Free Cancellation	Rating 7.8 8,552 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.