ABE - DEN

$208 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 12/11. 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 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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Everything you should know

Cheapest round-trip
$205
Typical prices: $279-$459
Multiple Airlines
Mon 1/26Sun 2/1
ABE - DEN • 1 stop
Cheapest one-way
$110
Typical prices: $257-$444
Multiple Airlines
Thu 12/11
ABE - DEN • 1 stop
Top airlines
American Airlines
Cheapest • from $234 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 37% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Denver!
Flight Deals
Booking Insights
Flight Deals

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

Mon, Jan 26 - Sun, Feb 1
Multiple Airlines Logo
8:30 am - 11:04 pmABE-DEN
16h 34m1 stop
Multiple Airlines Logo
11:59 pm - 9:26 pmDEN-ABE
19h 27m1 stop
$205Multiple Airlines
Find Deal
Mon, Jan 26 - Sun, Feb 1
Multiple Airlines Logo
8:30 am - 11:04 pmABE-DEN
16h 34m1 stop
Multiple Airlines Logo
11:59 pm - 9:26 pmDEN-ABE
19h 27m1 stop
$208Multiple Airlines
Find Deal
Mon, Jan 26 - Mon, Feb 2
Multiple Airlines Logo
8:30 am - 11:04 pmABE-DEN
16h 34m1 stop
Multiple Airlines Logo
9:00 pm - 3:15 pmDEN-ABE
40h 15m2 stops
$221Multiple Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
American Airlines Logo
1:46 pm - 9:08 pmABE-DEN
9h 22m1 stop
American Airlines Logo
7:49 am - 3:51 pmDEN-ABE
6h 02m1 stop
$234American Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
American Airlines Logo
1:46 pm - 10:19 pmABE-DEN
10h 33m2 stops
American Airlines Logo
6:23 am - 3:51 pmDEN-ABE
7h 28m1 stop
$239American Airlines
Find Deal
Tue, Dec 16 - Wed, Jan 7
Delta Logo
12:54 pm - 8:30 pmABE-DEN
9h 36m1 stop
Delta Logo
1:15 pm - 10:50 pmDEN-ABE
7h 35m1 stop
$263Delta
Find Deal
Mon, Jan 26 - Mon, Feb 2
Delta Logo
5:58 pm - 12:28 amABE-DEN
8h 30m1 stop
Delta Logo
1:16 pm - 10:50 pmDEN-ABE
7h 34m1 stop
$277Delta
Find Deal
Tue, Nov 11 - Tue, Nov 18
American Airlines Logo
1:46 pm - 10:22 pmABE-DEN
10h 36m2 stops
American Airlines Logo
12:26 pm - 10:52 pmDEN-ABE
8h 26m2 stops
$279American Airlines
Find Deal
Fri, Jan 30 - Wed, Feb 4
Delta Logo
5:58 pm - 12:28 amABE-DEN
8h 30m1 stop
Delta Logo
2:42 pm - 10:50 pmDEN-ABE
6h 08m1 stop
$283Delta
Find Deal
Tue, Nov 18 - Wed, Nov 19
American Airlines Logo
1:46 pm - 10:19 pmABE-DEN
10h 33m2 stops
American Airlines Logo
6:23 am - 3:51 pmDEN-ABE
7h 28m1 stop
$294American Airlines
Find Deal
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.

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

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

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 Friday, 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 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 September, where tickets cost $208 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $488 and $438 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 6 weeks before departure, which saves you about 42% 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$110
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly and prices are also 23% 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 $110 for a one-way ticket and $205 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?

    American Airlines, and Delta 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.

  • Which airline alliances offer flights from Allentown to Denver?

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

  • 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 $397 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 $474 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 $106 or less one-way and $228 or less round-trip.

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.
7.9
DeltaOverall score based on 7993 reviews
7.9Comfort
7.9Entertainment
8.5Crew
8.2Boarding
7.3Food
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

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.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

We were delayed for a “couple of maintenance issues.” They were resolved rather quickly but a computer glitch caused someone in the airport to have to bring a physical copy of the paperwork so we could leave. I don’t know where they had to drive from to get to our plane but it took forever & we were 1 1/2 hrs late in leaving. The flight itself was fine.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Because the plane was 90 degrees F, they would not let us board. I wish they had, because it meant we were delayed. It's Texas, of course it's hot. We would have survived.

Our bags took a long time to get unloaded once we landed.

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

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 knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

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.

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

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