DEN - ABE

$90 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 10/18. 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

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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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

Thu, Oct 23 - Sun, Oct 26
Allegiant Air Logo
10:15 am - 3:42 pmDEN-ABE
3h 27mnonstop
Allegiant Air Logo
7:30 am - 9:25 amABE-DEN
3h 55mnonstop
$161Allegiant Air
Find Deal
Sat, Oct 18 - Sat, Oct 25
American Airlines Logo
1:52 pm - 10:40 pmDEN-ABE
6h 48m1 stop
American Airlines Logo
1:56 pm - 8:08 pmABE-DEN
8h 12m1 stop
$179American Airlines
Find Deal
Sat, Oct 18 - Sat, Oct 25
American Airlines Logo
7:08 am - 5:23 pmDEN-ABE
8h 15m1 stop
American Airlines Logo
1:56 pm - 8:27 pmABE-DEN
8h 31m2 stops
$184American Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 4
American Airlines Logo
5:45 am - 5:23 pmDEN-ABE
9h 38m2 stops
American Airlines Logo
1:46 pm - 10:22 pmABE-DEN
10h 36m2 stops
$189American Airlines
Find Deal
Wed, Oct 22 - Sun, Oct 26
Multiple Airlines Logo
12:36 am - 10:15 pmDEN-ABE
19h 39m1 stop
Multiple Airlines Logo
7:30 am - 9:25 amABE-DEN
3h 55mnonstop
$190Multiple Airlines
Find Deal
Wed, Oct 15 - Sun, Oct 19
Multiple Airlines Logo
8:21 pm - 11:24 amDEN-ABE
13h 03m1 stop
Multiple Airlines Logo
7:30 am - 9:25 amABE-DEN
3h 55mnonstop
$196Multiple Airlines
Find Deal
Sat, Oct 25 - Fri, Oct 31
American Airlines Logo
7:08 am - 5:23 pmDEN-ABE
8h 15m1 stop
American Airlines Logo
2:43 pm - 7:34 pmABE-DEN
6h 51m1 stop
$204American Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 19
Allegiant Air Logo
10:15 am - 3:42 pmDEN-ABE
3h 27mnonstop
Allegiant Air Logo
7:30 am - 9:25 amABE-DEN
3h 55mnonstop
$227Allegiant Air
Find Deal
Sat, Oct 18 - Sat, Oct 25
Delta Logo
7:05 am - 5:20 pmDEN-ABE
8h 15m1 stop
Delta Logo
12:46 pm - 8:15 pmABE-DEN
9h 29m1 stop
$257Delta
Find Deal
Sat, Oct 18 - Mon, Oct 27
Delta Logo
7:05 am - 5:20 pmDEN-ABE
8h 15m1 stop
Delta Logo
6:00 pm - 11:59 pmABE-DEN
7h 59m1 stop
$258Delta
Find Deal

Everything you should know

Top airlines
Allegiant Air
Cheapest • from $161 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 41% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
2 days a week
There are direct flights from Denver to Allentown 2 days a week: Thu, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$161
Overall average: $179
Allegiant Air
Thu 10/23Sun 10/26
DEN - ABE • Non-stop
Cheapest one-way
$90
Typical prices: $95-166
American Airlines
Sat 10/18
DEN - ABE • 1 stop
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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!
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.

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 Monday and avoid Thursdays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Fridays and the most expensive ones on Tuesdays.

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 $179 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $488 and $403 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 $184, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Denver to Allentown?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Denver to Allentown, you should book around 3 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$90
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 41% 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 3 days, the lowest price for a flight from Denver to Allentown was $90 for a one-way ticket and $161 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.

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

    You can catch a nonstop flight from Denver to Allentown on on Thursday, and Sunday.

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

    The two airlines most popular with KAYAK users for flights from Denver to Allentown are Delta and United Airlines. With an average price for the route of $448 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $468 and an overall rating of 7.4.

  • 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 $67 or less one-way and $167 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

Thursday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Allentown-Bethlehem to Denver Intl

Thursday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 4 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.
7.9
DeltaOverall score based on 7954 reviews
7.9Comfort
8.2Boarding
7.9Entertainment
7.3Food
8.5Crew
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Internet was a bit expensive and did not work ask that week otherwise a good flight

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

Mechanical delay and no compensation. Missed connection as a result of their delay. Mediocre performance and service. Horrible airline currently with horrible culture.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

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

Information on your arrival and departure airports

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