$58+ Cheap flights from Allentown to Denver (ABE - DEN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — DEN
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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Find cheap flights from Allentown to Denver with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Allentown-Bethlehem to Denver Intl are usually found in October or September, booked 66 days in advance, depart on a Friday or Thursday and return on a Tuesday
Cheap flight deals from Allentown to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Allentown to DenverExplore the most affordable flight options available from Allentown to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.
Explore the most affordable flight options available from Allentown to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:30 am
ABE
- DEN
Nonstop3h 46m
Allegiant Air
Fri 10/210:14 am
DEN
- ABE
Nonstop3h 28m
Allegiant Air
Deal found 7/19![Allegiant Air logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:30 am
ABE
- DEN
Nonstop3h 46m
Allegiant Air
Fri 10/210:14 am
DEN
- ABE
Nonstop3h 28m
Allegiant Air
Deal found 7/20![Allegiant Air logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:30 am
ABE
- DEN
Nonstop3h 46m
Allegiant Air
Fri 10/210:14 am
DEN
- ABE
Nonstop3h 28m
Allegiant Air
Deal found 7/21![Allegiant Air logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Fri 9/410:06 am
DEN
- ABE
Nonstop3h 32m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:30 am
ABE
- DEN
Nonstop3h 54m
Allegiant Air
Fri 10/910:14 am
DEN
- ABE
Nonstop3h 28m
Allegiant Air
Deal found 7/21![Allegiant Air logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:30 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Fri 9/410:06 am
DEN
- ABE
Nonstop3h 32m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:30 am
ABE
- DEN
Nonstop3h 46m
Allegiant Air
Fri 9/189:36 am
DEN
- ABE
Nonstop3h 32m
Allegiant Air
Deal found 7/22![Allegiant Air logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:00 am
ABE
- DEN
Nonstop3h 46m
Allegiant Air
Fri 10/210:14 am
DEN
- ABE
Nonstop3h 28m
Allegiant Air
Deal found 7/19![Allegiant Air logo]()
$167
This Cheapflightsfares deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Mon 8/3110:12 am
DEN
- ABE
Nonstop3h 29m
Allegiant Air
Deal found 7/21![Allegiant Air logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Mon 8/3110:12 am
DEN
- ABE
Nonstop3h 29m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$175
Best flights from Allentown to DenverDiscover carefully curated flight deals from Allentown to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
Discover carefully curated flight deals from Allentown to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:36 pm
ABE
- DEN
1 stop8h 18m
United Airlines
Tue 8/258:35 am
DEN
- ABE
1 stop6h 25m
United Airlines
Deal found 7/19![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:09 pm
ABE
- DEN
1 stop6h 53m
Delta
Sat 8/227:19 am
DEN
- ABE
1 stop8h 04m
Delta
Deal found 7/20![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:25 am
ABE
- DEN
1 stop6h 40m
Delta
Tue 9/157:15 am
DEN
- ABE
1 stop8h 06m
Delta
Deal found 7/21![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/171:10 pm
ABE
- DEN
1 stop6h 47m
Delta
Tue 8/259:39 am
DEN
- ABE
1 stop5h 44m
Delta
Deal found 7/21![Delta logo]()
$375
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:09 pm
ABE
- DEN
1 stop6h 53m
Delta
Wed 8/269:39 am
DEN
- ABE
1 stop5h 44m
Delta
Deal found 7/21![Delta logo]()
$375
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:04 pm
ABE
- DEN
1 stop8h 32m
Delta
Sat 9/52:10 pm
DEN
- ABE
1 stop6h 13m
Delta
Deal found 7/18![Delta logo]()
$395
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:10 pm
ABE
- DEN
1 stop6h 47m
Delta
Fri 9/117:15 am
DEN
- ABE
1 stop8h 06m
Delta
Deal found 7/22![Delta logo]()
$405
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:16 am
ABE
- DEN
2 stops13h 59m
Delta
Sat 9/52:10 pm
DEN
- ABE
1 stop6h 13m
Delta
Deal found 7/18![Delta logo]()
$436
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:04 pm
ABE
- DEN
2 stops16h 45m
Delta
Tue 9/11:15 pm
DEN
- ABE
1 stop7h 08m
Delta
Deal found 7/18![Delta logo]()
$438
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:16 am
ABE
- DEN
2 stops13h 59m
Delta
Tue 9/17:19 am
DEN
- ABE
1 stop8h 04m
Delta
Deal found 7/18![Delta logo]()
$438
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:16 am
ABE
- DEN
1 stop7h 09m
Delta
Tue 8/187:19 am
DEN
- ABE
1 stop8h 04m
Delta
Deal found 7/22![Delta logo]()
$448
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:56 pm
ABE
- DEN
1 stop8h 51m
Delta
Mon 9/1412:10 pm
DEN
- ABE
1 stop8h 06m
Delta
Deal found 7/21![Delta logo]()
$448
Last-minute flights from Allentown to DenverDiscover last-minute flight deals from Allentown to Denver. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Allentown to Denver. Data last updated July 23, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:54 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Fri 8/289:42 am
DEN
- ABE
Nonstop3h 29m
Allegiant Air
Deal found 7/20![Allegiant Air logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Mon 8/3110:12 am
DEN
- ABE
Nonstop3h 29m
Allegiant Air
Deal found 7/21![Allegiant Air logo]()
$173
This Trip.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 am
ABE
- DEN
Nonstop3h 52m
Multiple Airlines
Thu 8/278:31 am
DEN
- ABE
1 stop10h 36m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Fri 8/289:42 am
DEN
- ABE
Nonstop3h 29m
Allegiant Air
Deal found 7/19![Allegiant Air logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Fri 9/410:06 am
DEN
- ABE
Nonstop3h 32m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Mon 8/3110:12 am
DEN
- ABE
Nonstop3h 29m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:30 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Fri 9/410:06 am
DEN
- ABE
Nonstop3h 32m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$155
One-way flights from Allentown to DenverSearch for one-way flight options from Allentown to Denver. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
Search for one-way flight options from Allentown to Denver. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:30 am
ABE
- DEN
Nonstop3h 46m
Allegiant Air
Deal found 7/21![Allegiant Air logo]()
$58
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:30 am
ABE
- DEN
Nonstop3h 54m
Allegiant Air
Deal found 7/20![Allegiant Air logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Deal found 7/20![Allegiant Air logo]()
$71
This Cheapflightsfares deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:54 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Deal found 7/20![Allegiant Air logo]()
$88
This Super.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:54 pm
ABE
- DEN
Nonstop4h 02m
Allegiant Air
Deal found 7/22![Allegiant Air logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 am
ABE
- DEN
Nonstop3h 52m
Allegiant Air
Deal found 7/21![Allegiant Air logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:50 pm
ABE
- DEN
2 stops38h 29m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$120
Find flight deals from Allentown to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Cheapflightsfares) |
One-way from | $58 (Cheapflightsfares) |
Popular in | March |
Cheapest in | October |
Average price | $309 |
Good round-trip deal | $208 or less |
Good one-way deal | $99 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Allentown to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Allentown to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Tue 8/18
5:36 pm-11:54 pm
1 stop8h 18m
Denver Intl
Tue 8/25
8:35 am-5:00 pm
1 stop6h 25m
$349
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Wed 8/19
6:09 pm-11:02 pm
1 stop6h 53m
Denver Intl
Sat 8/22
7:19 am-5:23 pm
1 stop8h 04m
$353
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Wed 9/9
6:25 am-11:05 am
1 stop6h 40m
Denver Intl
Tue 9/15
7:15 am-5:21 pm
1 stop8h 06m
$363
Quickest round-trip
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Mon 8/17
1:10 pm-5:57 pm
1 stop6h 47m
Denver Intl
Tue 8/25
9:39 am-5:23 pm
1 stop5h 44m
$375
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Wed 8/19
6:09 pm-11:02 pm
1 stop6h 53m
Denver Intl
Wed 8/26
9:39 am-5:23 pm
1 stop5h 44m
$375
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Thu 8/27
6:04 pm-12:36 am
1 stop8h 32m
Denver Intl
Sat 9/5
2:10 pm-10:23 pm
1 stop6h 13m
$395
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Fri 9/4
1:10 pm-5:57 pm
1 stop6h 47m
Denver Intl
Fri 9/11
7:15 am-5:21 pm
1 stop8h 06m
$405
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Wed 8/26
6:16 am-6:15 pm
2 stops13h 59m
Denver Intl
Sat 9/5
2:10 pm-10:23 pm
1 stop6h 13m
$436
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Thu 8/27
6:04 pm-8:49 am
2 stops16h 45m
Denver Intl
Tue 9/1
1:15 pm-10:23 pm
1 stop7h 08m
$438
AllentownDenver
ABE - DEN
ABEDEN
Allentown-Bethlehem
Wed 8/26
6:16 am-6:15 pm
2 stops13h 59m
Denver Intl
Tue 9/1
7:19 am-5:23 pm
1 stop8h 04m
$438
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Allentown to Denver
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Allentown to Denver in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Allentown-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Allentown-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Allentown-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Allentown-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Allentown to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Allentown with our price prediction graph.
ABE-DEN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Allentown to Denver
How far ahead should I book a flight from Allentown to Denver?
Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Allentown to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Allentown to Denver?
Currently, October is the cheapest month in which you can book a flight from Allentown to Denver (average of $197). Flying from Allentown to Denver in March is currently the most expensive (average of $580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ABE to DEN?
Find hourly flight availability from Allentown to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2026.
When flying from Allentown to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated July 23, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAllegiant Air from Allentown to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Allentown to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Black Hawk
Westminster
Centennial
Lakewood
Broomfield
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
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Allentown and Denver flights
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Top 4 airlines flying from Allentown to Denver
Discover the top 4 airlines that operate flights from Allentown to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$143 | Average$254 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$177 | Average$498 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$185 | Average$448 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$244 | Average$359 | FlexibilityNo cancel fee | On-timeN/A |