Daily cleaning, installation of cabin HEPA filters
|August||Best time to beat the crowds with an average 4% drop in price.|
|December||Most popular time to fly with an average 14% increase in price.|
Average price round-trip
|$286||(avg. price over the last 2 weeks)|
Good deal round-trip
Good deal one-way
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 Colorado to Allentown.
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from Colorado is likely to change within 7 days, so travelers know whether to wait or book now.
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 Colorado with another airline.
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 Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
Scores according to KAYAK customer reviews
Pros: "We arrived eventually."
Cons: "Flight delayed three hours. Payed extra for an earlier flight. Very disappointing."
Cons: "Delayed 4 hours"
Pros: "Flight left on time and landed on time"
Pros: "Quick flight...ahead of schedule"
Cons: "Cheese It’s are boring...miss the snack mix"
Pros: "Flight was delayed for more than 3 hours."
Cons: "Could have left on or close to schedule."
Pros: "The service, on time, employees very nice."
Cons: "Getting to Venice on time. Our late arrival cost me a 90 euro shutle."
Pros: "On time flight, bag made it, great price, can’t complain."
Cons: "Seat pretty tight for an average size adult man. No inflight phone charger."
Pros: "The flight attendants were all helpful and pleasant. The seats were comfortable. We were provided with plenty of liquids."
Cons: "The landing was pretty tough and we took off almost a half hour late."
Pros: "Very friendly gate attendants helped us fix the problem that our frequent flyer number had not been entered on the boarding pass. This may have been because of the booking co., Just Fly."
Cons: "Would have liked more seat options, like when I book on Delta's website. Didn't have enough advance warning."
Pros: "Food and entertainment was good"
Cons: "The bathroom I used was disgusting."
Pros: "Anything from free WiFi, entertainment, leg room, commentary drinks and snacks. Great service!"
Pros: "Ran smoothly, typical flight, everything was as to be expected. Everyone was polite and courteous."
Cons: "Tight seats, boarding process was a bit lengthy, and we hit some turbulence (obviously beyond anyone's control). The pilot and crew handled it well."
Pros: "What a city.. Unique for hell sure..."
Cons: "That I couldn't reschedule due to the hurricane. I got stuck in Texas because of the hurricane. They didn't want to reschedule the flight because Denver was not apart of the affected area."
Pros: "Staff was courteous, flight uneventful but that's a good thing!"
Cons: "Long flight, difficult to sit that long (3 hrs plus)"
Pros: "Excellent crew and comfortable flight"
Pros: "Friendly Staff"
Cons: "Check in was very hectic due to limited staff and getting bumped by the red carpet flyers. Boarding is always a little congested due to the lines. Better snacks please!!"
Pros: "It's a nice, comfortable flight with plenty of entertainment options."
Cons: "The coffee on board is lousy, but I'm not sure that is much of a surprise."
Pros: "We purchased economy tickets in Delta. With these tickets you don't know where you are sitting until you get to the airport. Well, we lucked out and got the Plus seats! We got free alcoholic drinks, and big plush seats! We left right on time and got there early! Overall a great experience!"
Pros: "Great,I loved it!"
Pros: "Food, crew, boarding"
Cons: "I had a screen in front of me that did not work. It was annoying. Fix it."
Cons: "I fly Delta quite often, and am usually pleased with their service, but the morning of June 23 was terrible. I got to the airport in Denver at 5:30 am for a 7:30 am flight to Atlanta, and the line to check a bag was about 40 people long. I waited 55minutes to check my bag, as they kept moving the ski priority people, and people in danger of missing their flight, to the head of the line. There were obviously not enough Delta workers on staff to process all the flights at that time."
Pros: "The moviea"
Cons: "The time of night"
Pros: "Everything else fine."
Cons: "Made me check my bag - even though ther was plenty of overhead bin space."
Pros: "I didn't like anything because the fly leat 3 hours"
Pros: "First we had a mechanical after boarding. I was rerouted through Atlanta. That flight is now delayed by 2hours. I then had to reroute to West Palm Beach instead of Ft Lauderdale. I will leave 9 hours after my original flight time and arrive 8 hours later. Just ridiculous"
Cons: "See above"
Pros: "The cabin crew serving the main cabin were exceptional. They were efficient, kind and FUN. We were an hour late leaving and 2/3 of the plane was worried about tight connections. They handled it with grace giving each person their departing gate and asking everyone to let a gentleman off with a 10 minute connection. They made the flight memorably enjoyable."
Cons: "Being an hour late isn't ideal and I understand that it wasn't their fault (the plane was late arriving into Denver. Those things happen. They still goto people to Detroit in time to make connections--barely."
Pros: "Smooth ride. Delta got everything right from takeoff to landing."
Pros: "Entertainment options"
Pros: "The flight attendants were so nice and accomadating. Even came by to refill our waters! I've never been on a flight with such friendly flight attendants!"
Pros: "Reassignment was pretty easy."
Cons: "No accommodations were available for overnight stay due to delayed flight."
Pros: "Comfortable as plane was half empty."
Cons: "No entertainment available at all."
Pros: "Upgraded to first class"
Cons: "No entertainment system, no power outlet...for first class this is disgraceful"
Pros: "The flight crew was great"
Cons: "I drove 5 hours to get to the airport and unfortunately ended up delayed because of traffic and slow shuttles from parking. I arrived 1 hour before the flight, but security was so slow I didn't get to the gat until 10 minutes before arrival. There were no gate agents present and despite banging on the gateway door and other Delta agents at the adjacent gate, no one helped me. I can only surmise that they had already given away our seats, which were award tickets, GAINED BY BEING A LOYAL DELTA CUSTOMER. The gate agents were unapologetic and useless at rebooking, and I bought a ticket from Southwest instead. As i was trying to get to my sister's wedding, and repeatedly told the agents this, their behavior was particularly abominable. DELTA, YOU'VE LOST A LOYAL CUSTOMER."
Cons: "Seats too close - I'm not that tall and my knees were jammed against the seat in front of me."
Pros: "Was able to get on a flight after ours was cancelled. Delta was in scramble mode and their gate staff worked hard ot deal with a frustrated flying populaiton"
Cons: "After paying for first class round trip airfare, we were given seats in coach in the rear of the plane, in spite of empty seats (plenty of them) in first class and economy comfort."
Pros: "Plane was clean and staff were friendly"
Cons: "The snack options were quite average"
Pros: "Flight attendants were lovely"
Pros: "The crew was very nice"
Cons: "Most of the food on the menu was not available"
Pros: "Excellent customer service. That doesn't seem to happen too often with airlines. Delta has been outstanding."
Cons: "No complaints."
Cons: "Delta didn't fulfill our trip from Atlanta to Allentown"
Pros: "Flight took off on time and arrived about 30 minutes early."
Pros: "on time travel care in treating my visitors from Kenya Africa"
Pros: "The flights back to anchorage were much better than the flights out of anchorage. They were on time and everyone was very helpful."
Pros: "you still get a complimentary snack and drink"
Cons: "I had no room to move and my legs were stuck"
Pros: "Only 15 mins."
Cons: "Seats were tight."
Pros: "Good seat. Good films."
Cons: "A broader range of free snack types would be nice."
Pros: "It got me to my destination safely."
Cons: "Very abrupt service. Not much room."
Cons: "My inflight entertainment wouldnt work."
Cons: "Flight attendant was exceptional."
Cons: "Was not allowed to get on slightly early with a car seat and a 3 year old to get situated in the seats, though on every other flight we have been allowed to. There was a delay that caused us to miss our connecting flight."
Pros: "Crew kept very calm and courteous during a delay."
Cons: "There were a ton of angry people about the amount of delays that happened today. There was no reason given and it caused issues."
Cons: "Commuter jet—no comfort. No jetway, we were on airplane stairs."
Pros: "I liked the big 787 plane and the in flight entertainment with individual TVs!"
Cons: "Not a huge fan of the captive audience announcements for the credit card and the meal pre-orders"
Pros: "Crew was good."
Cons: "The seat was tiny. It took forever. I hate you people."
Pros: "Flight attendants were helpful"
Cons: "I missed my flight because of crew shortage."
Pros: "I was in first class thanks to an upgrade. The flight attendant was very nice. But the amenities are total garbage - no seatback in-flight entertainment, no power."
Cons: "No in-flight entertainment except on your own device. No power, ensuring your device will die on a long flight. The old US Airways fleet from the Northeast is awful."
Pros: "The gate crew very efficient boarding Very quick and efficient takeoff No electronic check of boarding passes Flight attendant somewhat responsive. Our luggage was charge 120 twice in a round trip !!!!"
Pros: "Flight was pleasant. Good leg room."
Cons: "Entertainment touch system did not work. Glad I brought my own, otherwise would not have had any. ☹️"
Pros: "Nice quick, timely flight."
Cons: "BARELY made the flight..delays leading to it. Ridiculous waiting on the Tarmac."
Pros: "Only one screaming kid. I was allowed to move to another seat"
Cons: "Food was good. Crew nice"
Cons: "No one knew what was going on. We boarded late, then sat there for 40 minutes with no communication, then we had to de-plane. But they couldn't get the jet way to work, so it took forever."
Pros: "The food choices were good and the entertainment."
Cons: "The seats were uncomfortable and the tray table was really low."
Cons: "7pm flight, received flight delayed notification at 11am that day. How do you anticipate a delay 8 hours prior to a flight. Delay allowed me about 10 minutes to sprint through the lovely Charlotte airport. To finish off my trip, American Airlines manages to misplace my carry on that was required to be tagged and stowed. I handed it to the individual right outside the plane to be stowed. How does the bag not get in the same plane?!?"
Pros: "Entertainment selection"
Cons: "Minimal leg room Not allowed to bring bag aboard. Told bins were full even though there was AMPLE Space in the overhead in my row. Onboard crew unhelpful. Baggage intended for carry on got “temporarily” delayed 45 min additional at baggage claim. wait was 1 1/2 hours."
Cons: "Flight to and from AL on American Airlines were both canceled - I was switched to Delta on the ‘to’ trip and was in AL another night on ‘home’ trip"
Pros: "Friendly staff great pilots we got up and down safely...."
Cons: "No time to grab lunch all I had was pretzels do you"
Cons: "No entertainment. Everything got somehow disconnect d. No one could reboot it and there was no explanation or concessions given. The staff were not forthcoming. The flight also took incredibly long to land. The landing was very bumpy like the plane slammed into the concrete."
Cons: "I got tranafered to 4 different gates aand my flight was delayed for 3 hrs with no explaination and the staff didn't try to help"
Pros: "Landed on time. AA is mostly on or before schedule. Definitely like that part. Smooth flying as well."
Cons: "No interactions with the crew this time. Boarding is okay."
Pros: "Crew updates during a technical issue investigation."
Cons: "This plane is very small for an international flight, and it does not have the proper entertainment system for long flights. To top it off, the plane was very smelly; I got a headache because of it. We also had to return to the gate due to a technical issue and ended up leaving almost two hours late, which defeated the purpose of picking this flight over the rest as it was the one that was supposed to land in Milan the earliest. I will be careful next time I pick a flight to check what kind of airplane they're using. My assumption that international flights have the best airplanes seems to be wrong :(."
Cons: "The fact that one could not book either an aisle or a window without paying significant sums is ridiculous - an additional $74 for a window seat and some were considerably more than that."
Pros: "Flight was great. Crew was very attentive and the flight was under booked giving my wife and I an empty middle seat. The entertainment was vast consisting of movies and TV shows to pass the time."
Cons: "No tvs!!"
Pros: "In general it was fine"
Cons: "The flight was not cheap and when I went to select my seat, it revealed that to not sit in the middle row would cost me an extra $60 each way. A bit much on the misc charges folks."
Pros: "Rapid boarding. On time performance. Plane was reasonably clean."
Cons: "Seats were tight but OK for a 3 hr flight. AA allows first passengers to carry excessive carry-on forcing later boarding passengers to check everything."
Pros: "The British Airways flight to Europe had on-demand movies, with a screen on the back of the seat in front of you. The American Airlines return flight only had a cabin screen, where everyone watched the same movie. I will say, however, that the two movies I watched were excellent, so the outcome was fine (but given the option, I'd take the BA option of on-demand viewing!)."
Cons: "The seats on the AA weren't quite as comfortable as the BA flight (seats sat pretty straight upright, and not too plush... but all in all, not terribly uncomfortable)."
Pros: "Ground delay but we still got there in time and I made a close connectionshort flight"
Cons: "I booked the flight with Kayak and it showed the airline as Finnair, the flight was actually with American, no complains about it. The issue was that Kayak did not update me with the Flight number for American Airlines and kept sending me information about the flight with Finnair which was not going to actually take place. I had to actually call American and spend time with a Representative providing all the data to be able to get my American Airlines flight booking code so I could check in online. American as always was great! Shame on Kayak!"
Cons: "I was forced to check my carry-on bag because it was too big according to the gate agent. I travel weekly, always carry-on my luggage and I have never been told it needed to be checked. AA had a ticket counter agent that was on a mission because she had a roll away cart parked by the jet way door to collect all the luggage she wouldn't allow on the plane. Very customer unfriendly!"
Pros: "Very efficient boarding, new plane"
Pros: "Sea was decent and flight on time wot"
Cons: "Entertainment system ridiculous. Doesn't work on Android or 64 bit Windows. Useless"
Pros: "Spacious seats, excellent service and the food was great for an aeroplane meal. Lots of bathrooms and I was always able to access food and water."
Cons: "They still use the dual port for headphones for the entertainment system so you are unable to use your own headphones. I didn't watch anything because of this."
Cons: "I selected an aisle seat because I have very bad anxiety and when I got there to print off my ticket I was assigned a middle seat. It was very uncomfortable"
Pros: "The plane boarded quickly and on time, the flight went smoothly."
Cons: "The plane seating layout was crammed. I had to sit uncomfortably the entire flight to avoid cuddling with the passenger next to me. Total sardine can."
Pros: "AA provided free headphones, free movies, music, and such."
Pros: "Considering Mathew was on the way, we did excellent."
Cons: "Internal America Airlines connection was delayed so my luggage never made it on to my international flight and then it took 2days for them to get it sent over!"
Pros: "Normal flight"
Cons: "The flight was ,the plane was small. And I was charged for my baggage when I used my card"
Pros: "The crew was friendly and helpful"
Cons: "Paying extra for seating and not sitting next to my wife"
Cons: "Fight was cancelled as reported a light near the exit sign was out. Had to sit in the airport 8 hours a regular delay of the this route."
Cons: "American cancelled flight after all day wait because they could not find a first officer."
Cons: "Our luggage was lost for about 22 hours, we kept getting coflcting information each time we called to check on it. The rental car that was also booked through the KAyak was junk. We requested a mid-size car, they tried to give us an old mini-van that was dented up, we called Enterprise instead and got a 2016 Ford Focus with unlimited mileage for only 15.00 more for the the 5 days of rental."
Pros: "One of the attendants was nice the other lady was mean."
Cons: "We had to wait over 40 min before we can get out of the airplane. It ruined my whole flight, they didn't have a gate for us to exit. Most likely I will not be flying with American Airlines again."
Pros: "That I was still able to get to PA, even though I had to go to a different airport."
Cons: "Because I had to go to a different airport (supposedly there were no other flights into Allentown until the next day), I had to get a car rental, (which at that point did not get a discount for reserving on internet), and mysteriously one of our bags ended up in Allentown anyway. Which was a nightmare."
Pros: "Service was outstanding, stewardess was funny, plane was very clean. I will switch from Southwest! Good job!"
Pros: "Easy flight"
Cons: "If the flight had not been cancelled!"
Cons: "Flight leaving on time and not over fueling the plane and missing my connection in Houston!"
Pros: "Updated us on cause of delay."
Cons: "Food was bare minimum for an international flight. Crew barely smiled and attitude was dry. Seats horrible for long flight."
Cons: "15 hours late! Terrible communication about the flight, conflicting messages, and no concern for the customers. What more CanIsay!"
Cons: "Upon checking in a boarding time was given of 0530. A line formed to get in a row 1/2. I would think business class would have a separate boarding rather than line 1. Once in line there was over an hour delay in boarding with no I repeat no information coming from the boarding agents, people were not happy as I heard many complaints. I was lucky and got a electronic notification but no reason. What a way to start a vacation!"
Pros: "Female captain. Make lead sturard. Smooth flight"
Pros: "frequency of drink/food service. Appreciated the ice cream."
Cons: "Food was not good. chicken or pasta were the choices, we sampled both. Neither was good - some of the worst airplane food Ive had. On our return flight from Munich to Houston we had same choices but it was a different type of chicken - curry chicken - and that was excellent. I would recommend you serve the same thing on your Houston - Munich flights! Seat comfort (bottoms) not so good."
Pros: "The movie selection was great. I did start to feel quite ill as we were taxiing to the gate and the attendant was kind enough to open the restroom door"
Cons: "This flight was operated by United ugh!, we didn’t get the extra leg room seats we requested. The flight attendants were not very helpful"
Pros: "Movies galore. Pleasant attendants."
Cons: "Crying babies"
Pros: "We actually left on time"
Cons: "Had no power in the seat which is an issue on a 6 hour flight. There was no meal provided or first drink even though I am a premier member. United is so cheap and the service shows it."
Pros: "Boarding was easy."
Cons: "WiFi was available."
Cons: "Plane sat on runway & subsequently returned to gate due to mechanical issue resulting in 2.5 hour departure delay. Boarding was chaotic - flight attendant said procedure not consistent with UA practices. Food only available is purchased from UA, and what food was available ran out (I never did get fed on the 11+ hour flight). Cabin very cold."
Pros: "Very professional staff at Montrose Regional. Special assistance was given by the ticket agent at the gate to help get a disabled co-travelor on board. Super smooth takeoff, best ever from Montrose."
Cons: "Everything went as expected. No issues."
Pros: "Your new plane was really nice. Finally enough leg room! Flight was on time, landed great, and service on the plan was great too."
Pros: "Crew was very friendly"
Cons: "Seats even smaller than I thought they could even go. Nickel and dime for everything, flight was delayed and just overall very mediocre."
Pros: "My flight was cancelled for bad weather. It was the ONLY FLIGHT going to or from Chicago cancelled. Typical United. Never flying United again."
Pros: "Crew at the airport and on the plane were wonderful!"
Pros: "Overall it was a good experience."
Cons: "No inflight entertainment at all. Not even music."
Pros: "Overall the service was great. I don't like being charged for having minimal luggage charges. The seats seemed worn and very limited space. The same amount for Econmy plus"
Cons: ". I don't like being charged for having minimal luggage charges. The seats seemed worn and very limited space. The same amount for Econmy plus"
Pros: "Clean. Punctual."
Pros: "The flight attendant was exceptionally nice and polite."
Pros: "Horrible check in process. Arrived 2-1/2 hours before flight, and spent the entire time in line waiting to check in. Was very chaotic and extremely frustrating. The staff were great, and thanks to their help we surprisingly didn't miss our flight. I cannot stress enough how awful this experience was."
Cons: "Very small plane with very small seats"
Pros: "The flight attendant was fantastic, she was up beat and very nice. It was a nice quick flight."
Pros: "Everything and everyone was great with United Airlines. The flights were on time.. thanks"
Pros: "Enjoyed the free movies"
Pros: "the plane was on time, smooth take off and landing, crew was efficient and friendly. it was great !"
Cons: "I have to endure 10+ hours without the chance to purchase on flight wifi"
Pros: "Customer service was excellent,very friendly."
Cons: "Delay of the plane and every show you have to pay for even the flight map, that was very disappointing."
Cons: "Awful. No crew. Horrible accommodations."
Cons: "Old huge plane. Sat in back. Awful. Didnt move for what seemed like half an hour or more before we even started moving toward runway. Then did the same thing once we landed. Chlosterphobic and awful."
Pros: "The food was and entertainment was good. They had direct tv in every seat and I was able to watch a good show."
Cons: "The flight was delayed a few hours and they ran out of drinks."
Cons: "I wished there was a snack."
Pros: "I liked that I was given spacious accommodations for myself and my service animal."
Cons: "I didn't like that we then sat on the plane for 2 hours, then had to get back off. I don't really blame United Airlines for this because there was a storm. But if Kayak wants me to rate the flight I'd have to say it was bad because it didn't even occur."
Pros: "Everything was fine"
Cons: "Didn't like the attitude at check in. Bag was over weight and they were not at all helpful in helping with that situation."
Pros: "Both flights were on time."
Cons: "I had to pay a separate fee for one suitcase! They do not provide any food for the long flights."
Cons: "Flight was canceled due to not enough staff and it caused me to miss out on money and I wasted my time because I was not informed until 7hours later"
Cons: "My flight was cancelled due to plane operational issues, could not get a flight out until the following day. Very disappointing"
Pros: "The flight attendant was great! Pleasant, polite and professional!"
Cons: "The flight from ORD to ABE was on a plane with expired maintenance logs or inspections? We were delayed 2 hours in arriving for what seemed like a pilots lax in paperwork. But what does a customer expect from an airline who knows they that customer by the balls?"
Pros: "My stuartist was wonderful."
Cons: "They over booked my flight, so I would have missed it had someone not gave up their seat for me. This was extremely disappointing begin that I had booked months in advance. I even picked my seats!"
Cons: "flight attendants rude, pilots landing scarey 2 times, Cabin freezing whole flight and everyone complained!!"
Cons: "My flight out of montrose to Denver was late by 50 minutes or more. So I didn't have a chance to take my flight from Denver to Austin. So I was at the Denver airport for five hours. To catch the next flight. But I understand that things happens. All of the personnel was really help full. No complains about that. I will do it again. I hop to have better luck whit my intineray"
Pros: "Easy boarding process"
Cons: "Not enough legroom"
Cons: "No entertainment"
Pros: "The boarding staff in the airport were excellent and very helpful. Wish I would have got the gate attendant name because she was great. There was a 30 minute delay for departure due to a maintenance issue but we arrived in Cincinnati only 10 minutes late."
Cons: "The aircraft was very cramped and uncomfortable the seats were terrible. The flight crew was being very unprofessional laughing and giggling while giving the mandatory safety instructions. The pilots did a great job getting us to Cincinnati only 10 minutes late after 30 minute delay in DC"
Cons: "Delays caused missed connections in not directions and terrible rerouting plus lost luggage"
Pros: "The direct flight. The new plane."
Airlines flying from Colorado to Allentown have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.
Daily cleaning, installation of cabin HEPA filters
Masks required on board, masks provided
Social distancing seating
Middle seats unavailable to book
Testing for antibodies, testing for symptoms
Waiving of change fees. Search flexible flights