Cheap Flights from Allentown to Denver International

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Flight deals from Allentown to Denver International

Looking for a cheap last-minute deal or the best return flight from Allentown Airport to Denver International Airport? If you want to travel next month, return fares start from $252. Find the lowest prices on one-way and return tickets right here.

Denver.$201 per passenger.Departing Fri, 28 Aug, returning Fri, 11 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Allentown on Fri, 28 Aug, arriving in Denver International.Inbound direct flight with Allegiant Air departs from Denver International on Fri, 11 Sep, arriving in Allentown.Price includes taxes and charges.From $201, select.

Denver.$252 per passenger.Departing Mon, 14 Sep, returning Fri, 25 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Allentown on Mon, 14 Sep, arriving in Denver International.Inbound direct flight with Allegiant Air departs from Denver International on Fri, 25 Sep, arriving in Allentown.Price includes taxes and charges.From $252, select.

Denver.$271 per passenger.Departing Mon, 5 Oct, returning Fri, 9 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Allentown on Mon, 5 Oct, arriving in Denver International.Inbound direct flight with Allegiant Air departs from Denver International on Fri, 9 Oct, arriving in Allentown.Price includes taxes and charges.From $271, select.

Denver.$282 per passenger.Departing Mon, 28 Sep, returning Fri, 9 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Allentown on Mon, 28 Sep, arriving in Denver International.Inbound direct flight with Allegiant Air departs from Denver International on Fri, 9 Oct, arriving in Allentown.Price includes taxes and charges.From $282, select.

Denver.$438 per passenger.Departing Fri, 28 Aug, returning Mon, 31 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Allentown on Fri, 28 Aug, arriving in Denver International.Inbound direct flight with Allegiant Air departs from Denver International on Mon, 31 Aug, arriving in Allentown.Price includes taxes and charges.From $438, select.

Denver.$777 per passenger.Departing Thu, 12 Nov, returning Sun, 15 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Allentown on Thu, 12 Nov, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Sun, 15 Nov, arriving in Allentown.Price includes taxes and charges.From $777, select.

Denver.$1,533 per passenger.Departing Fri, 30 Oct, returning Sun, 1 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Allentown on Fri, 30 Oct, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Sun, 1 Nov, arriving in Allentown.Price includes taxes and charges.From $1,533, select.

Find the cheapest month to fly from Allentown to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Allentown to Denver International flights are currently cheapest in September.

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Direct flights from Allentown to Denver International

Allentown to Denver International: Alternative routes

Compare routes from Allentown to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Denver International

30km from central Denver

ClosestCheapest

from $201

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Allentown to Denver: Flight information

The things to know before you go.

Cheapest flight found	$201
Cheapest month to fly	August
Average flight time	3 hrs, 53 mins
Most popular airline	Allegiant Air
Average flights per week	2

Finding cheap flights from Allentown to Denver International: Frequently asked questions

How much are return flights from Allentown to Denver International?

The best price we found for a return flight from Allentown to Denver International is $201. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Allentown to Denver International?

3 hours and 53 minutes is the average flight time from Allentown to Denver International.

Which airlines fly direct from Allentown to Denver International?

Allegiant Air flies direct from Allentown to Denver International.

How many flights are there a week from Allentown to Denver International?

As of August 2026, there are 2 flights per week flying from Allentown to Denver International.

When is the cheapest time to fly from Allentown to Denver International?

The cheapest month to fly from Allentown to Denver International is usually August.

Which upcoming date is cheapest to fly from Allentown Airport to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Allentown Airport to Denver International Airport on Friday, 28 August 2026.

Can I get a direct flight from Allentown Airport to Denver International Airport?

Yes – the average flight time is 3 hours and 53 minutes.

How can I find the best flight deal to Denver International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Allentown Airport to Denver International with?

Currently, Allegiant Air offers the cheapest flight tickets to Denver International.

Flying from Allentown Airport (ABE) to Denver International Airport (DEN): what you need to know

Around 3 hours 55 minutes is how long you'll be travelling on a direct flight from Allentown Airport to Denver International Airport.
The timezone in Denver is UTC-7, which is two hours behind Allentown.
Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Be at the airport on time to board your ABE to DEN flight.
Be prepared for bigger queues during popular months like July. Arriving up to four hours ahead of an international flight and two hours for domestic departures will give you ample time for security and boarding.
Allegiant Air offers direct flights from Allentown Airport to Denver International Airport. Book with this popular carrier, then get ready to check out the sights in Denver — and maybe even more of the United States if you have time.
The airline most travellers prefer to fly with on this route is Allegiant Air.
Allegiant Air is the most punctual carrier that offers ABE to DEN flights.
If you'd like to explore another city along the way, just uncheck 'Direct flights only' when searching for your ticket from Allentown Airport to Denver International Airport. These are the top stopovers between ABE and DEN:
- Chicago O'Hare International Airport
- Atlanta Hartsfield-Jackson Airport
- Myrtle Beach International Airport

Handy information about Allentown Airport (ABE)

ABE is located at 3311 Airport Road.
When it comes to the on-time performance of Allentown Airport, data shows 78% of flights arrive within the scheduled timeframe.
Allentown Airport is about 13 kilometres from central Allentown. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.
You can expect a trip time of around 45 minutes on public transport.
Looking for a handy hotel close to ABE? If you're boarding an early flight from Allentown Airport to Denver International Airport, these accommodation options will have you moments from your check-in counter:

Arriving at Denver International Airport (DEN)

Consider a stay at Baymont by Wyndham Denver International Airport after your Allentown Airport to Denver International Airport flight. It's not too far from DEN and a handy option if you want to get some rest right away.
Travel at your own speed with a Denver International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and see more of Denver and beyond.
For the lowest price, reserve your vehicle from Denver International Airport around one week before travelling.

When to fly to Denver International Airport (DEN)

The quietest month for a flight from Allentown Airport to Denver International Airport is January, while July is the busiest. Pick the ideal time to visit Denver based on whether you prefer a faster pace or a more relaxed vibe.
The warmest month in Denver is July, with the temperature ranging between 14ºC and 32ºC. Book your flights from Allentown Airport to Denver International Airport in this month if you enjoy this type of weather.
January sees average temperatures of between -9ºC and 7ºC. Look for cheap tickets from ABE to DEN around that time if you want to travel in cooler conditions.

Explore more of the United States

You've visited Denver, now it's time to explore other parts of the United States. Travel about 105 kilometres south to Colorado Springs to tick off its must-visit sights. From Garden of the Gods to Pikes Peak Region Attractions and Red Rock Canyon, you'll have a full itinerary ahead.
Aurora is another essential stop in the United States and is around 13 kilometres east of Denver. No trip is complete without dropping by Plains Conservation Centre, DeLaney Homestead Historic District and Aircraft viewing.