$151+ Cheap flights from Portland, ME to Denver (PWM - 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DEN
Aug 5 — Aug 121
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 February or November, booked 88 days in advance, depart on a Friday or Tuesday and return on a Thursday
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 July 6, 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 July 6, 2026.
This Delta deal was found by Cheapflights users on 7/3. 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 7/236:59 pm
PWM
- DEN
1 stop7h 24m
Delta
Tue 7/281:10 pm
DEN
- PWM
1 stop8h 04m
Delta
Deal found 7/3![Delta logo]()
$384
This Southwest deal was found by Cheapflights users on 7/2. 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 7/233:20 pm
PWM
- DEN
1 stop8h 40m
Southwest
Tue 7/287:40 am
DEN
- PWM
2 stops8h 50m
Southwest
Deal found 7/2![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 7/1. 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 7/225:30 am
PWM
- DEN
2 stops10h 05m
Southwest
Mon 7/277:05 pm
DEN
- PWM
1 stop12h 50m
Southwest
Deal found 7/1![Southwest logo]()
$394
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 9/263:45 pm
PWM
- DEN
Nonstop4h 33m
United Airlines
Tue 9/291:42 pm
DEN
- PWM
1 stop7h 46m
United Airlines
Deal found 7/2![United Airlines logo]()
$395
This Priceline deal was found by Cheapflights users on 7/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
PWM
- DEN
1 stop9h 11m
JetBlue
Mon 8/2411:55 pm
DEN
- PWM
1 stop10h 35m
JetBlue
Deal found 7/4![JetBlue logo]()
$398
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Fri 9/43:37 pm
PWM
- DEN
Nonstop4h 33m
United Airlines
Wed 9/99:53 am
DEN
- PWM
Nonstop3h 58m
United Airlines
Deal found 7/2![United Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 7/4. 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 8/187:35 pm
PWM
- DEN
1 stop6h 55m
United Airlines
Mon 8/249:53 am
DEN
- PWM
Nonstop3h 58m
United Airlines
Deal found 7/4![United Airlines logo]()
$404
This Priceline deal was found by Cheapflights users on 7/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:25 pm
PWM
- DEN
1 stop11h 19m
JetBlue
Thu 8/62:04 pm
DEN
- PWM
1 stop8h 21m
JetBlue
Deal found 7/5![JetBlue logo]()
$406
This Southwest deal was found by Cheapflights users on 7/3. 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 9/2410:30 am
PWM
- DEN
2 stops9h 15m
Southwest
Mon 9/2811:25 am
DEN
- PWM
2 stops9h 00m
Southwest
Deal found 7/3![Southwest logo]()
$409
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 7/233:37 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Tue 7/2812:40 pm
DEN
- PWM
1 stop8h 50m
United Airlines
Deal found 7/2![United Airlines logo]()
$410
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 July 6, 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 July 6, 2026.
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Thu 7/237:16 pm
PWM
- DEN
1 stop7h 14m
United Airlines
Tue 7/281:41 pm
DEN
- PWM
1 stop7h 49m
United Airlines
Deal found 7/5![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 7/3. 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 8/215:55 am
PWM
- DEN
2 stops7h 30m
Southwest
Mon 8/2412:50 pm
DEN
- PWM
2 stops7h 35m
Southwest
Deal found 7/3![Southwest logo]()
$423
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 11/93:27 pm
PWM
- DEN
Nonstop4h 54m
United Airlines
Mon 11/1610:11 am
DEN
- PWM
Nonstop3h 51m
United Airlines
Deal found 7/1![United Airlines logo]()
$420
This Southwest deal was found by Cheapflights users on 7/2. 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 9/171:05 pm
PWM
- DEN
2 stops8h 50m
Southwest
Sun 9/2012:35 pm
DEN
- PWM
2 stops6h 55m
Southwest
Deal found 7/2![Southwest logo]()
$438
This United Airlines deal was found by Cheapflights users on 7/4. 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 9/93:37 pm
PWM
- DEN
Nonstop4h 33m
United Airlines
Wed 9/2312:40 pm
DEN
- PWM
1 stop8h 52m
United Airlines
Deal found 7/4![United Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 7/2. 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 7/305:35 am
PWM
- DEN
2 stops9h 45m
Southwest
Mon 8/31:20 pm
DEN
- PWM
2 stops8h 50m
Southwest
Deal found 7/2![Southwest logo]()
$457
This United Airlines deal was found by Cheapflights users on 7/4. 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 9/93:37 pm
PWM
- DEN
Nonstop4h 33m
United Airlines
Sat 9/1211:15 am
DEN
- PWM
1 stop8h 08m
United Airlines
Deal found 7/4![United Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 7/4. 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.
Tue 7/215:30 am
PWM
- DEN
2 stops10h 05m
Southwest
Wed 7/291:30 pm
DEN
- PWM
2 stops7h 30m
Southwest
Deal found 7/4![Southwest logo]()
$458
This Southwest deal was found by Cheapflights users on 7/5. 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 8/315:55 am
PWM
- DEN
2 stops7h 30m
Southwest
Thu 9/35:15 am
DEN
- PWM
1 stop7h 45m
Southwest
Deal found 7/5![Southwest logo]()
$478
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Sat 10/313:27 pm
PWM
- DEN
Nonstop4h 54m
United Airlines
Mon 11/1610:11 am
DEN
- PWM
Nonstop3h 51m
United Airlines
Deal found 7/5![United Airlines logo]()
$524
This Southwest deal was found by Cheapflights users on 7/5. 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 7/205:35 am
PWM
- DEN
2 stops10h 05m
Southwest
Mon 7/271:20 pm
DEN
- PWM
2 stops8h 50m
Southwest
Deal found 7/5![Southwest logo]()
$547
Last-minute flights from Portland to DenverDiscover last-minute flight deals from Portland to Denver. Data last updated July 6, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Denver. Data last updated July 6, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/1. 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 7/225:30 am
PWM
- DEN
2 stops10h 05m
Southwest
Mon 7/277:05 pm
DEN
- PWM
1 stop12h 50m
Southwest
Deal found 7/1![Southwest logo]()
$394
This Delta deal was found by Cheapflights users on 7/3. 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 7/236:59 pm
PWM
- DEN
1 stop7h 24m
Delta
Tue 7/281:10 pm
DEN
- PWM
1 stop8h 04m
Delta
Deal found 7/3![Delta logo]()
$384
This Southwest deal was found by Cheapflights users on 7/2. 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 7/233:20 pm
PWM
- DEN
1 stop8h 40m
Southwest
Tue 7/287:40 am
DEN
- PWM
2 stops8h 50m
Southwest
Deal found 7/2![Southwest logo]()
$388
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 7/233:37 pm
PWM
- DEN
Nonstop4h 39m
United Airlines
Tue 7/2812:40 pm
DEN
- PWM
1 stop8h 50m
United Airlines
Deal found 7/2![United Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 7/1. 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 7/2910:30 am
PWM
- DEN
2 stops10h 00m
Southwest
Wed 8/511:15 am
DEN
- PWM
2 stops8h 50m
Southwest
Deal found 7/1![Southwest logo]()
$409
This Priceline deal was found by Cheapflights users on 7/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:25 pm
PWM
- DEN
1 stop11h 19m
JetBlue
Thu 8/62:04 pm
DEN
- PWM
1 stop8h 21m
JetBlue
Deal found 7/5![JetBlue logo]()
$406
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/73:06 pm
PWM
- DEN
1 stop9h 37m
American Airlines
Mon 8/103:13 pm
DEN
- PWM
1 stop6h 24m
American Airlines
Deal found 7/1![American Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 7/4. 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 8/187:35 pm
PWM
- DEN
1 stop6h 55m
United Airlines
Mon 8/249:53 am
DEN
- PWM
Nonstop3h 58m
United Airlines
Deal found 7/4![United Airlines logo]()
$404
This Priceline deal was found by Cheapflights users on 7/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
PWM
- DEN
1 stop9h 11m
JetBlue
Mon 8/2411:55 pm
DEN
- PWM
1 stop10h 35m
JetBlue
Deal found 7/4![JetBlue logo]()
$398
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 July 6, 2026.
Search for one-way flight options from Portland to Denver. Find affordable one-way fares based on user searches. Data last updated July 6, 2026.
This JetBlue deal was found by Cheapflights users on 7/3. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
PWM
- DEN
1 stop8h 57m
JetBlue
Deal found 7/3![JetBlue logo]()
$151
This JetBlue deal was found by Cheapflights users on 7/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:00 am
PWM
- DEN
1 stop10h 18m
JetBlue
Deal found 7/1![JetBlue logo]()
$156
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/292:56 pm
PWM
- DEN
1 stop9h 29m
American Airlines
Deal found 7/1![American Airlines logo]()
$175
This JetBlue deal was found by Cheapflights users on 7/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:00 am
PWM
- DEN
1 stop9h 11m
JetBlue
Deal found 7/1![JetBlue logo]()
$179
This Southwest deal was found by Cheapflights users on 7/3. 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.
Sat 10/39:25 am
PWM
- DEN
2 stops8h 40m
Southwest
Deal found 7/3![Southwest logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Thu 7/238:22 pm
PWM
- DEN
2 stops43h 38m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Tue 7/214:44 pm
PWM
- DEN
2 stops31h 21m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$198
This United Airlines deal was found by Cheapflights users on 7/5. 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 9/23:37 pm
PWM
- DEN
Nonstop4h 33m
United Airlines
Deal found 7/5![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/123:45 pm
PWM
- DEN
1 stop9h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/2. 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
PWM
- DEN
2 stops28h 19m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Thu 8/68:22 pm
PWM
- DEN
2 stops38h 41m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:05 am
PWM
- DEN
1 stop9h 06m
American Airlines
Deal found 7/1![American Airlines logo]()
$209
Find flight deals from Portland to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $384 (Delta) |
One-way from | $151 (JetBlue) |
Popular in | June |
Cheapest in | February |
Average price | $546 |
Good round-trip deal | $462 or less |
Good one-way deal | $363 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 2,558,603 searches. Data last updated July 6, 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
PWM - DEN
PWMDEN
Portland
Thu 7/23
7:16 pm-12:30 am
1 stop7h 14m
Denver Intl
Tue 7/28
1:41 pm-11:30 pm
1 stop7h 49m
$384
Quickest round-trip
PortlandDenver
PWM - DEN
PWMDEN
Portland
Mon 11/9
3:27 pm-6:21 pm
Nonstop4h 54m
Denver Intl
Mon 11/16
10:11 am-4:02 pm
Nonstop3h 51m
$420
PortlandDenver
PWM - DEN
PWMDEN
Portland
Fri 8/21
5:55 am-11:25 am
2 stops7h 30m
Denver Intl
Mon 8/24
12:50 pm-10:25 pm
2 stops7h 35m
$423
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 9/17
1:05 pm-7:55 pm
2 stops8h 50m
Denver Intl
Sun 9/20
12:35 pm-9:30 pm
2 stops6h 55m
$438
PortlandDenver
PWM - DEN
PWMDEN
Portland
Wed 9/9
3:37 pm-6:10 pm
Nonstop4h 33m
Denver Intl
Wed 9/23
12:40 pm-11:32 pm
1 stop8h 52m
$439
PortlandDenver
PWM - DEN
PWMDEN
Portland
Wed 9/9
3:37 pm-6:10 pm
Nonstop4h 33m
Denver Intl
Sat 9/12
11:15 am-9:23 pm
1 stop8h 08m
$439
PortlandDenver
PWM - DEN
PWMDEN
Portland
Thu 7/30
5:35 am-1:20 pm
2 stops9h 45m
Denver Intl
Mon 8/3
1:20 pm-12:10 am
2 stops8h 50m
$457
PortlandDenver
PWM - DEN
PWMDEN
Portland
Tue 7/21
5:30 am-1:35 pm
2 stops10h 05m
Denver Intl
Wed 7/29
1:30 pm-11:00 pm
2 stops7h 30m
$458
PortlandDenver
PWM - DEN
PWMDEN
Portland
Mon 8/31
5:55 am-11:25 am
2 stops7h 30m
Denver Intl
Thu 9/3
5:15 am-3:00 pm
1 stop7h 45m
$478
PortlandDenver
PWM - DEN
PWMDEN
Portland
Sat 10/31
3:27 pm-6:21 pm
Nonstop4h 54m
Denver Intl
Mon 11/16
10:11 am-4:02 pm
Nonstop3h 51m
$524
Showing 1-10 of 20 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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Portland, Maine-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-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, Maine-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.
PWM-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
How far ahead should I book a flight from Portland, Maine to Denver?
Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland, Maine 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 Portland, Maine to Denver?
Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Denver (average of $380). Flying from Portland, Maine to Denver in June is currently the most expensive (average of $599). 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 PWM 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 July 6, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland, Maine to Denver as you normally would.
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 6, 2026.
Read through reviews of airlines operating flights from Portland to Denver, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
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
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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Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 6, 2026.
Search flights from Portland to Denver by cabin class
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Portland and Denver flights
Browse other Portland and Denver flight options. Last updated on July 6, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on July 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Portland to Denver
Discover the top 5 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 2,558,603 searches. Data last updated July 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$242 | Average$406 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$253 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$403 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$294 | Average$494 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$300 | Average$479 | FlexibilityNo cancel fee | On-time63% |