ABE - DEN

$116 Find Cheap Flights from Allentown to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Allentown to Denver departing on 5/20. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Denver

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

Cheap Flight Deals from Allentown to Denver (ABE-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Allentown to Denver 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.

Recent round-trip flight deals from Allentown to Denver

KAYAK's recommended round-trip deals from the most popular airlines that fly from Allentown to Denver.
Discover the best prices for you by selecting your travel dates on KAYAK.
Allegiant Air Logo
8:00 am - 9:45 amABE-DEN
3h 45mnonstop
Allegiant Air Logo
10:35 am - 4:05 pmDEN-ABE
3h 30mnonstop
$127Allegiant Air
Find Deal
Thu, Sep 4 - Thu, Sep 11
Allegiant Air Logo
7:00 am - 9:01 amABE-DEN
4h 01mnonstop
Allegiant Air Logo
9:51 am - 3:13 pmDEN-ABE
3h 22mnonstop
$178Allegiant Air
Find Deal
Sun, Aug 3 - Thu, Aug 14
American Airlines Logo
5:27 pm - 10:59 pmABE-DEN
7h 32m1 stop
American Airlines Logo
4:06 pm - 12:40 amDEN-ABE
6h 34m1 stop
$229American Airlines
Find Deal
Sun, May 25 - Thu, May 29
American Airlines Logo
5:25 am - 2:19 pmABE-DEN
10h 54m2 stops
American Airlines Logo
4:06 pm - 12:40 amDEN-ABE
6h 34m1 stop
$234American Airlines
Find Deal
Sun, May 25 - Thu, May 29
Delta Logo
12:57 pm - 6:09 pmABE-DEN
7h 12m1 stop
Delta Logo
12:15 pm - 10:29 pmDEN-ABE
8h 14m1 stop
$257Delta
Find Deal
Wed, Jun 18 - Wed, Jun 25
Delta Logo
6:00 am - 11:04 amABE-DEN
7h 04m1 stop
Delta Logo
1:41 pm - 10:30 pmDEN-ABE
6h 49m1 stop
$265Delta
Find Deal
Thu, Jul 31 - Tue, Aug 5
United Airlines Logo
5:35 pm - 11:30 pmABE-DEN
7h 55m1 stop
United Airlines Logo
11:25 am - 9:55 pmDEN-ABE
8h 30m1 stop
$406United Airlines
Find Deal
Wed, Jun 11 - Tue, Jun 17
 Logo
6:00 am - 11:30 amABE-DEN
31h 30m2 stops
 Logo
6:31 pm - 11:23 pmDEN-ABE
26h 52m2 stops
Mon, May 12 - Fri, May 16
 Logo
10:08 pm - 4:01 pmABE-DEN
19h 53m3 stops
 Logo
8:00 am - 10:37 amDEN-ABE
24h 37m2 stops
Thu, Jun 5 - Mon, Jun 9
United Airlines Logo
6:30 am - 11:22 pmABE-DEN
18h 52m1 stop
United Airlines Logo
11:25 am - 9:55 pmDEN-ABE
8h 30m1 stop
$516United Airlines
Find Deal
Thu, Jul 10 - Sat, Jul 12
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KAYAK's insights & trends for Allentown to Denver flights

Get data-powered insights and trends into flights from Allentown to Denver 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 Allentown to Denver?

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

If your flying dates are flexible, you should consider flying to Denver on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Allentown to Denver. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Allentown to Denver, 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 Allentown to Denver is October, where tickets cost $170 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $506 and $398 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Allentown to Denver, 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 Allentown to Denver, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonDecember
High seasonSeptember
Cheapest flight$116
Best time to beat the crowds but there is an average 56% increase in price.
Most popular time to fly and prices are also 39% lower on average.
Flight from Allentown to Denver

When to book flights from Allentown to Denver

Are your dates flexible? Find out the best times to travel from Allentown to Denver 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 Allentown to Denver

  • How many flights are there between Allentown and Denver per day?

    There is a maximum of 1 nonstop flight a day that takes off from Allentown and lands in Denver, with an average flight time of 4h 01m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 2 flights.

  • What is the cheapest flight from Allentown to Denver?

    In the last 3 days, the lowest price for a flight from Allentown to Denver was $116 for a one-way ticket and $127 for a round-trip.

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

    No

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

    Delta, JetBlue, and American Airlines offer inflight Wi-Fi service on the Allentown to Denver flight route.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Allentown to Denver are Delta and United Airlines. With an average price for the route of $417 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $441 and an overall rating of 7.4.

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

    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 Allentown to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Allentown 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 Allentown to Denver?

    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 Denver with an airline and back to Allentown with another airline. Booking your flights between Allentown and DEN 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 Allentown to Denver?

    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 Denver from Allentown 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 Allentown to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $72 or less one-way and $173 or less round-trip.

Prefer to fly direct from Allentown to Denver?

Find which airlines fly direct from Allentown-Bethlehem Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Allentown-Bethlehem to Denver Intl

Thursday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Denver Intl to Allentown-Bethlehem

Thursday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights
See more direct flights

Top 5 airlines serving from Allentown to Denver

 
See real verified KAYAK customer reviews for airlines flying from Allentown to Denver. 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 Allentown to Denver? 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.
8.0
DeltaOverall score based on 7934 reviews
7.3Food
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

8.0 ExcellentFredrick, Apr 2025GSO - DTW
Read more Delta reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Liked that we left on time for each flight. Snacks not the best, but we're okay.

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!

First time flying with them and will definitely fly again in the future. Crew was so nice and friendly, fought was seamless. They are simple planes, no entertainment, but it’s fine for a short flight or if you have personal devices Rates are competitive, and they did so well with keeping the flight on time after a tropical storm, where other airlines had delays and cancellations.

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

I didn't even take this flight. My plans changed and I couldn't get ahold of customer service and the website kept breaking down during the attempt to change the flight. I wound up taking another airline entirely and eating the cost.

The worst flying experience ever 3 delays. No accommodations. Had to deboard the plane after being delayed.

Posted a 20minute delay but didn’t delay at all. Caused boarding issues and confusion. Also, didn’t release baggage. Took over an hour and 20 minutes to get luggage.

Flight was good, boarding was a breeze, flight attendants were friendly and professional. There was a medical issue with another passenger and the crew handled it in a calm and professional way.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

One of the best flights I’ve had. So smooth.

late again! but its my only option to not take 9 hours to get to Memphis

Almost everything was outstanding. First, we boarded on time and the flight crew did a great job getting everyone seated. Then the pilots took their time and care to make sure the plane was full de-iced three times as there was a bad ice storm a few hours earlier. The plane ride was smooth and comfortable and even the economy seats had decent room and comfort. Flight Attendant Lisa went above and beyond to make sure I was comfortable - she is outstanding. The only thing wrong with the flight, and it is something which needs to be addressed, is that the gate to gate time was over 6.5 hours and not one meal was served. The only thing offered to eat were two small cookies for a transcontinental flight - unacceptable. Charge me more but give me a meal for a long flight. Thankfully Lisa found something for me.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

The flight left a bit late, but arrived close to time expected…With the flight being close to full the crew did well serving drinks to all in a very timely fashion. The flight was a pleasure…

They didn't have any gluten-free snacks, oddly, which I require...or any flavored soda water or decaf tea options, which seems to be standard.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Stuck in Phoenix for two days, not even a hotel voucher offered.

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Flight got delayed for 3.5 hours, and for the first hour after the departure time there was no update from the gate folks...

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