DEN - ABE

$79 Find Cheap Flights from Denver to Allentown

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Allentown departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Allentown

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Allentown, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Allentown, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$142
Typical prices: $399-$205
Allegiant Air
Fri 9/25Mon 9/28
DEN - ABE • Non-stop
Cheapest non-stop
$167
Allegiant Air
Fri 8/14Mon 8/17
DEN - ABE • Non-stop
Nonstop flights
2 days a week
Mon, Fri
You can fly direct with Allegiant Air. Average duration is 3h 28m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
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Top airlines
Cheapest • from $142 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $411 (round-trip)
Shortest trip • 6h 20m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 52% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Allentown!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Allentown (DEN-ABE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Allentown that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Allentown

Fri, Sep 25 - Mon, Sep 28
Allegiant Air Logo
9:36 am - 3:08 pm
DEN
-
ABE
3h 32mnonstop
Allegiant Air Logo
7:30 am - 9:16 am
ABE
-
DEN
3h 46mnonstop
$142Allegiant Air
Mon, Sep 14 - Mon, Sep 21
Allegiant Air Logo
10:06 am - 3:38 pm
DEN
-
ABE
3h 32mnonstop
Allegiant Air Logo
7:30 am - 9:16 am
ABE
-
DEN
3h 46mnonstop
$144Allegiant Air
Fri, Aug 14 - Mon, Aug 17
Allegiant Air Logo
5:46 pm - 11:14 pm
DEN
-
ABE
3h 28mnonstop
Allegiant Air Logo
2:54 pm - 4:56 pm
ABE
-
DEN
4h 02mnonstop
$167Allegiant Air
Fri, Jul 3 - Fri, Jul 24
Allegiant Air Logo
10:20 am - 3:48 pm
DEN
-
ABE
3h 28mnonstop
Allegiant Air Logo
7:30 am - 9:30 am
ABE
-
DEN
4h 00mnonstop
$239Allegiant Air
Fri, Jul 3 - Fri, Jul 24
Allegiant Air Logo
10:20 am - 3:48 pm
DEN
-
ABE
3h 28mnonstop
Allegiant Air Logo
7:30 am - 9:30 am
ABE
-
DEN
4h 00mnonstop
$242Allegiant Air
Mon, Sep 14 - Mon, Sep 21
Delta Logo
7:15 am - 5:21 pm
DEN
-
ABE
8h 06m
1 stop
Delta Logo
6:13 pm - 10:58 pm
ABE
-
DEN
6h 45m
1 stop
$269Delta
Fri, Jul 31 - Mon, Aug 3
Allegiant Air Logo
5:47 pm - 11:15 pm
DEN
-
ABE
3h 28mnonstop
Allegiant Air Logo
2:57 pm - 4:57 pm
ABE
-
DEN
4h 00mnonstop
$277Allegiant Air
Fri, Jul 17 - Fri, Jul 24
Allegiant Air Logo
10:20 am - 3:48 pm
DEN
-
ABE
3h 28mnonstop
Allegiant Air Logo
7:30 am - 9:30 am
ABE
-
DEN
4h 00mnonstop
$293Allegiant Air
Fri, Aug 14 - Mon, Aug 17
Allegiant Air Logo
8:22 am - 2:23 pm
DEN
-
ABE
28h 01m
2 stops
Allegiant Air Logo
2:54 pm - 4:56 pm
ABE
-
DEN
4h 02mnonstop
$295Allegiant Air
Tue, Jul 28 - Mon, Aug 3
Multiple Airlines Logo
4:40 pm - 11:11 am
DEN
-
ABE
40h 31m
2 stops
Multiple Airlines Logo
2:57 pm - 4:57 pm
ABE
-
DEN
4h 00mnonstop
$301Multiple Airlines
Booking Insights

KAYAK's insights & trends for Denver to Allentown flights

Get data-powered insights and trends into flights from Denver to Allentown to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Denver to Allentown?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Allentown departing in September.

What’s the cheapest day of the week to fly from Denver to Allentown?

The average price of all round-trip flights from Denver to Allentown clicked on KAYAK for each day over the last 12 months.

When flying from Denver to Allentown, you should consider leaving on a Thursday and avoid Mondays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Sundays and the most expensive ones on Fridays.

What is the cheapest month to fly from Denver to Allentown?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Allentown, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Allentown is October, where tickets cost $184 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $767 and $515 respectively.

Can I save money by flying with a layover from Denver to Allentown?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $323, prices are generally cheapest when you fly direct.

Good to know

Low seasonMarch
Cheapest flight$79
Best time to beat the crowds but there is an average 100% increase in price.
Most popular time to fly and prices are also 52% lower on average.
Flight from Denver to Allentown

When to book flights from Denver to Allentown

Are your dates flexible? Find out the best times to travel from Denver to Allentown based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Allentown

  • What is the cheapest flight from Denver to Allentown?

    In the last 5 days, the lowest price for a flight from Denver to Allentown was $79 for a one-way ticket and $142 for a round-trip.

  • Do I need a passport to fly between Denver and Allentown?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to Allentown?

    When flying out of Denver you will be using Denver Intl. You will be landing at Allentown, also known as Allentown-Bethlehem.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Allentown?

    Only American Airlines offers inflight Wi-Fi service on the Denver to Allentown flight route.

  • Which aircraft models fly most regularly from Denver to Allentown?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Denver to Allentown flight route.

  • Which airline alliances offer flights from Denver to Allentown?

    Star Alliance, and oneworld are the airline alliances operating flights between Denver and Allentown, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Denver to Allentown?

    You can catch a nonstop flight from Denver to Allentown on on Monday, and Friday.

  • Which is the best airline for flights from Denver to Allentown, United Airlines or Allegiant Air?

    The two airlines most popular with KAYAK users for flights from Denver to Allentown are United Airlines and Allegiant Air. With an average price for the route of $518 and an overall rating of 7.4, United Airlines is the most popular choice. Allegiant Air is also a great choice for the route, with an average price of $205 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Denver to Allentown?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Allentown.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Allentown?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Allentown?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Allentown with an airline and back to Denver with another airline. Booking your flights between Denver and ABE can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Allentown?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Allentown from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Allentown

  • Looking for a cheap flight? 25% of our users found flights on this route for $145 or less one-way and $188 or less round-trip.

Prefer to fly direct from Denver to Allentown?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to Allentown-Bethlehem.
Find which airlines fly direct from Denver Intl Airport to Allentown-Bethlehem Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Allentown-Bethlehem

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Allentown-Bethlehem to Denver Intl

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 3 airlines serving from Denver to Allentown

 
See real verified KAYAK customer reviews for airlines flying from Denver to Allentown. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Allentown? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9828 reviews
7.7Boarding
6.6Food
7.1Entertainment
7.3Comfort
8.1Crew
Airline reviews

This planes staff was top tier. Everything went great and had a great flight home.

10.0 ExcellentKati, Jun 2026
DEN - DFW
Read more United Airlines reviews

This planes staff was top tier. Everything went great and had a great flight home.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

Cancelled flight. Still waiting to get home for grand daughter’s graduation .

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

When I booked my flight a month ago - I selected a seat. That seat was NOT the one I ended up with when I checked into my flight the day before. This is the second time this has occurred. So, I checked my next flight on Wednesday and Thursday and no seat was assigned. Poor, very poor customer service.

Cleared standby and gave up my seat. Terrible policy and boarding experience

Message about flight cancelation was received late due to being in the air. No explanation, just canceled and booked on morning flight. We had to stay in the airport overnight because there was no transportation offered to get to the hotel that AA had available. Actual inflight was fine.

Bag drop was very disorganized in Miami. All main cabin passengers were shunted to just a few lanes and they had an equal number of lanes for first class passengers but there was nobody on those lines. They did nothing to bring the main cab and passengers over to the open lines and they just had employees standing there and doing nothing

Everything you need to know for your flight from Denver to Allentown

Information on your arrival and departure airports