ABE - DEN

$92 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 9/14. 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 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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Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Allentown to Denver

Sun, Oct 12 - Thu, Oct 16
Allegiant Air Logo
7:30 am - 9:25 amABE-DEN
3h 55mnonstop
Allegiant Air Logo
10:15 am - 3:42 pmDEN-ABE
3h 27mnonstop
$106Allegiant Air
Find Deal
Thu, Sep 4 - Thu, Sep 11
Allegiant Air Logo
8:00 am - 9:45 amABE-DEN
3h 45mnonstop
Allegiant Air Logo
10:35 am - 4:05 pmDEN-ABE
3h 30mnonstop
$120Allegiant Air
Find Deal
Sun, Aug 31 - Thu, Sep 4
Allegiant Air Logo
7:00 am - 9:01 amABE-DEN
4h 01mnonstop
Allegiant Air Logo
10:35 am - 4:05 pmDEN-ABE
3h 30mnonstop
$124Allegiant Air
Find Deal
Thu, Sep 11 - Sun, Sep 14
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
Sun, Aug 24 - Thu, Aug 28
Allegiant Air Logo
7:00 am - 9:01 amABE-DEN
4h 01mnonstop
Allegiant Air Logo
9:51 am - 3:13 pmDEN-ABE
3h 22mnonstop
$128Allegiant Air
Find Deal
Sun, Aug 24 - Thu, Aug 28
Allegiant Air Logo
7:00 am - 9:01 amABE-DEN
4h 01mnonstop
Allegiant Air Logo
9:51 am - 3:13 pmDEN-ABE
3h 22mnonstop
$136Allegiant Air
Find Deal
Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
1:56 pm - 8:08 pmABE-DEN
8h 12m1 stop
American Airlines Logo
7:09 am - 6:01 pmDEN-ABE
8h 52m1 stop
$221American Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
8:00 am - 5:47 pmABE-DEN
11h 47m2 stops
American Airlines Logo
7:09 am - 6:01 pmDEN-ABE
8h 52m1 stop
$226American Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
1:56 pm - 8:22 pmABE-DEN
8h 26m2 stops
American Airlines Logo
10:31 am - 10:29 pmDEN-ABE
9h 58m2 stops
$231American Airlines
Find Deal
Thu, Sep 11 - Sun, Sep 14
 Logo
8:00 am - 9:45 amABE-DEN
3h 45mnonstop
 Logo
6:25 pm - 8:40 pmDEN-ABE
24h 15m2 stops
Booking Insights

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 Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from Allentown to Denver. For your return ticket, we recommend flying on a Tuesday and avoiding Thursdays 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 September, where tickets cost $197 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $493 and $438 respectively.

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

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 $225, prices are generally cheapest when you fly direct.

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 5 weeks before departure, which saves you about 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$92
Best time to beat the crowds but there is an average 50% increase in price.
Most popular time to fly and prices are also 40% 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

  • 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 $92 for a one-way ticket and $106 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?

    Only American Airlines offers 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 $394 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 $448 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 $83 or less one-way and $127 or less round-trip.

Prefer to fly direct from Allentown to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Allentown-Bethlehem to Denver Intl.
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

Reviews of the 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 7981 reviews
7.3Food
7.9Entertainment
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

2.0 MediocreGim, Jul 2025BGM - DTW
Read more Delta reviews

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

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.

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

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

We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

It’s a great flight. Service is good. Staff is awesome.

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.

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!

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.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

My tickets got canceled on me by your site and I didn't have a flight. Then you kept sending me emails on the status of q flight I didn't have tickets for.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

This was one of the first frontier airline flights this spring that wasn't delayed. It actually left on time. Some of the flight crew did not look happy, they didn't smile when the passengers were boarding or getting off the plane, and the passengers initiated greetings, not the staff. To me this was an odd experience to have with any flight/airline. I had a bad experience booking this flight. The price didn't solidify until late hours into the night. Ever time I purchased the ticket, I either received a denial email or an error because the price has changed, but it was never reflected on the flyfrontier or kayak websites until way after midnight on the date of travel. This caused me anxiety and irritation with the websites. Then I noticed a mishap with my name on my voucher as I went to check in, it was incorrect. When I proceeded to correct it, Frontier had no easy, let alone free, way to remedy it. I couldn't correct my name without a $75 charge, I couldn't cancel my voucher to repurchase it with the correct name without a $100 charge, because it was too close to departure. Then calling frontier was nearly impossible to remedy the situation with a human. It's already difficult to want to choose frontier because of all the upcharges, but you feel kinda trapped into doing so because it's the more affordable airline.

Our flight was cancelled. They could do nothing to help us get another flight that was timely. Because the first leg was cancelled we were unable to get to our connection. We had to book on an entirely different airline for today. So we spent more money, lost a day of vacation and will never fly Frontier again, so the 'we are sorry, here is $100 credit' is a joke since we won't be flying on Frontier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

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

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