$106+ Cheap flights from Portland to Denver (PDX - 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.
PDX — DEN
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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 Portland to Denver Intl are usually found in January or October, booked 77 days in advance, depart on a Friday or Thursday and return on a Saturday
Cheap flight deals from Portland to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to DenverExplore the most affordable flight options available from Portland to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from Portland to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:02 am -
1 stop21h 30m
Thu 9/2410:00 am -
Nonstop2h 43m
Deal found 8/17![Frontier logo]()
$173
This Booking.com deal was found by Cheapflights users on 8/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:02 am -
1 stop5h 57m
Thu 9/2410:00 am -
Nonstop2h 43m
Deal found 8/17![Frontier logo]()
$174
This Trip.com deal was found by Cheapflights users on 8/19. 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.
Thu 9/2411:02 am -
1 stop5h 57m
Mon 9/2810:00 am -
Nonstop2h 43m
Deal found 8/19![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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.
Sat 9/1212:24 pm -
1 stop10h 20m
Sat 9/2610:44 pm -
1 stop12h 23m
Deal found 8/17![Frontier logo]()
$176
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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 9/2512:38 pm -
Nonstop2h 40m
Mon 9/2810:00 am -
Nonstop2h 43m
Deal found 8/17![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:49 am -
Nonstop2h 38m
Sat 10/1710:55 pm -
1 stop12h 16m
Deal found 8/19![Frontier logo]()
$178
This Super.com deal was found by Cheapflights users on 8/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:38 pm -
Nonstop2h 40m
Mon 9/2110:00 am -
Nonstop2h 43m
Deal found 8/18![Frontier logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:38 pm -
Nonstop2h 40m
Thu 9/241:05 pm -
1 stop23h 49m
Deal found 8/18![Frontier logo]()
$182
This Expedia deal was found by Cheapflights users on 8/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/211:02 am -
1 stop21h 30m
Mon 10/510:00 am -
Nonstop2h 43m
Deal found 8/19![Frontier logo]()
$184
Best flights from Portland to DenverDiscover carefully curated flight deals from Portland to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Portland to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:58 pm -
Nonstop2h 48m
Sat 9/128:08 am -
Nonstop2h 42m
Deal found 8/17![Alaska Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:10 pm -
1 stop7h 30m
Mon 10/262:55 pm -
2 stops6h 40m
Deal found 8/19![Southwest logo]()
$282
This Delta deal was found by Cheapflights users on 8/21. 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.
Fri 9/253:21 pm -
1 stop7h 26m
Mon 9/286:00 am -
1 stop5h 40m
Deal found 8/21![Delta logo]()
$288
This United Airlines deal was found by Cheapflights users on 8/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am -
Nonstop2h 38m
Sat 10/31:25 pm -
Nonstop2h 40m
Deal found 8/21![United Airlines logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/292:51 pm -
Nonstop2h 41m
Mon 10/512:31 pm -
1 stop6h 47m
Deal found 8/20![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:55 pm -
1 stop7h 10m
Mon 11/28:30 am -
2 stops7h 30m
Deal found 8/18![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:50 am -
2 stops6h 55m
Thu 9/2412:30 pm -
1 stop5h 05m
Deal found 8/17![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:05 pm -
2 stops7h 20m
Sat 10/311:00 am -
2 stops9h 30m
Deal found 8/21![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:00 am -
2 stops7h 55m
Mon 10/126:35 pm -
1 stop7h 45m
Deal found 8/18![Southwest logo]()
$313
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:00 am -
2 stops6h 50m
Thu 11/54:55 pm -
1 stop7h 25m
Deal found 8/20![Southwest logo]()
$322
Last-minute flights from Portland to DenverDiscover last-minute flight deals from Portland to Denver. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Denver. Data last updated August 22, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:02 am -
1 stop5h 57m
Sat 9/1210:44 pm -
1 stop12h 23m
Deal found 8/17![Frontier logo]()
$178
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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.
Sat 9/1212:24 pm -
1 stop10h 20m
Sat 9/2610:44 pm -
1 stop12h 23m
Deal found 8/17![Frontier logo]()
$176
This Booking.com deal was found by Cheapflights users on 8/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:02 am -
1 stop5h 57m
Thu 9/2410:00 am -
Nonstop2h 43m
Deal found 8/17![Frontier logo]()
$174
This Super.com deal was found by Cheapflights users on 8/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:38 pm -
Nonstop2h 40m
Mon 9/2110:00 am -
Nonstop2h 43m
Deal found 8/18![Frontier logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:38 pm -
Nonstop2h 40m
Thu 9/241:05 pm -
1 stop23h 49m
Deal found 8/18![Frontier logo]()
$182
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:02 am -
1 stop21h 30m
Thu 9/2410:00 am -
Nonstop2h 43m
Deal found 8/17![Frontier logo]()
$173
This Trip.com deal was found by Cheapflights users on 8/19. 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.
Thu 9/2411:02 am -
1 stop5h 57m
Mon 9/2810:00 am -
Nonstop2h 43m
Deal found 8/19![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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 9/2512:38 pm -
Nonstop2h 40m
Mon 9/2810:00 am -
Nonstop2h 43m
Deal found 8/17![Frontier logo]()
$177
One-way flights from Portland to DenverSearch for one-way flight options from Portland to Denver. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Portland to Denver. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/1411:02 am -
1 stop21h 30m
Deal found 8/18![Frontier logo]()
$106
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:49 am -
Nonstop2h 38m
Deal found 8/18![Frontier logo]()
$107
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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 9/2812:38 pm -
Nonstop2h 40m
Deal found 8/17![Frontier logo]()
$108
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:06 am -
1 stop5h 55m
Deal found 8/21![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 8/17. 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.
Sun 10/1811:49 am -
Nonstop2h 38m
Deal found 8/17![Frontier logo]()
$112
This Cheapflightsfares deal was found by Cheapflights users on 8/21. 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.
Thu 10/2912:31 pm -
1 stop10h 18m
Deal found 8/21![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:39 pm -
1 stop10h 05m
Deal found 8/21![Frontier logo]()
$115
This Cheapflightsfares deal was found by Cheapflights users on 8/21. 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.
Fri 9/1111:02 am -
1 stop5h 57m
Deal found 8/21![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:25 pm -
1 stop6h 25m
Deal found 8/21![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Sun 11/15:30 pm -
1 stop29h 55m
Deal found 8/17![Frontier logo]()
$121
Find flight deals from Portland to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $173 (Expedia) |
One-way from | $106 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $264 |
Good round-trip deal | $304 or less |
Good one-way deal | $176 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland 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 7,457,451 searches. Data last updated August 22, 2026.
Use the filters below to find and compare flights from Portland to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Thu 9/10
5:58 pm-9:46 pm
Nonstop2h 48m
Denver Intl
Sat 9/12
8:08 am-9:50 am
Nonstop2h 42m
$257
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Tue 9/29
2:51 pm-6:32 pm
Nonstop2h 41m
Denver Intl
Mon 10/5
12:31 pm-6:18 pm
1 stop6h 47m
$267
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Thu 10/22
4:10 pm-12:40 am
1 stop7h 30m
Denver Intl
Mon 10/26
2:55 pm-8:35 pm
2 stops6h 40m
$282
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Fri 9/25
3:21 pm-11:47 pm
1 stop7h 26m
Denver Intl
Mon 9/28
6:00 am-10:40 am
1 stop5h 40m
$288
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Fri 10/30
2:55 pm-11:05 pm
1 stop7h 10m
Denver Intl
Mon 11/2
8:30 am-3:00 pm
2 stops7h 30m
$293
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Wed 9/23
7:50 am-3:45 pm
2 stops6h 55m
Denver Intl
Thu 9/24
12:30 pm-4:35 pm
1 stop5h 05m
$293
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Wed 9/30
1:05 pm-9:25 pm
2 stops7h 20m
Denver Intl
Sat 10/3
11:00 am-7:30 pm
2 stops9h 30m
$297
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Mon 9/28
5:00 am-1:55 pm
2 stops7h 55m
Denver Intl
Mon 10/12
6:35 pm-1:20 am
1 stop7h 45m
$313
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Sun 11/1
5:00 am-12:50 pm
2 stops6h 50m
Denver Intl
Thu 11/5
4:55 pm-11:20 pm
1 stop7h 25m
$322
Quickest round-trip
PortlandDenver
PDX Portland - DEN Denver Intl
PDXDEN
Portland
Wed 9/30
5:00 am-8:38 am
Nonstop2h 38m
Denver Intl
Sat 10/3
1:25 pm-3:05 pm
Nonstop2h 40m
$337
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Portland 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 Portland to Denver in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Portland with our price prediction graph.
PDX-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 Portland to Denver
Prices
Airlines
Delays
How far ahead should I book a flight from Portland to Denver?
The best time to book flights from Portland to Denver is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland to Denver?
Currently, January is the cheapest month in which you can book a flight from Portland to Denver (average of $202). Flying from Portland to Denver in June is currently the most expensive (average of $317). 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 PDX to DEN?
Find hourly flight availability from Portland 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 August 22, 2026.
A simple way to save on the total cost of your ticket is to fly from Portland to Denver in the afternoon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from Portland to Denver?
Use this chart to determine the cheapest time to fly round-trip from Portland to Denver. Price data was last updated on August 15, 2026.
Travelers seeking maximum savings on their Portland to Denver flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Portland to Denver delayed?
About 13% of weekly flights between Portland and Denver have experienced delays in the past year, with the average delay time being 133 minutes.
What is the most punctual flight time for Portland to Denver flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Sunday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Portland to Denver flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 6% of flights being delayed.
The best insider tips for Portland to Denver flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Portland to Denver trip
Our travel experts
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 August 22, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andHawaiian Airlines from Portland to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Portland 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
Westminster
Black Hawk
Lakewood
Centennial
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Greeley
Cripple Creek
Winter Park
Limon
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
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Top 7 airlines flying from Portland to Denver
Discover the top 7 airlines that operate flights from Portland 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$186 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$236 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$126 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$143 | Average$278 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$147 | Average$299 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$147 | Average$296 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$173 | Average$255 | FlexibilityNo cancel fee | On-time85% |