68 € Cheap Flights from Portland (PDX) to Denver International (DEN)

Q: How much are return flights from Portland to Denver International?

The best price we found for a return flight from Portland to Denver International is 68 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Q: How long does it take to fly from Portland to Denver International?

2 hours and 32 minutes is the average flight time from Portland to Denver International.

Q: Which airlines fly direct from Portland to Denver International?

Southwest Airlines, United and Alaska Airlines fly direct from Portland to Denver International.

Q: How many flights are there a week from Portland to Denver International?

As of August 2025, there are 100 flights per week flying from Portland to Denver International.

Q: When is the cheapest time to fly from Portland to Denver International?

The cheapest month to fly from Portland to Denver International is usually September.

Q: Which upcoming date is cheapest to fly from Portland Airport to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Denver International Airport on Tuesday, 23 September 2025 .

Q: Can I get a direct flight from Portland Airport to Denver International Airport?

Yes – the average flight time is 2 hours and 32 minutes.

Q: How can I find the best flight deal to Denver International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

Q: When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Q: Which is the cheapest airline to fly from Portland Airport to Denver International with?

Currently, Frontier Airlines offers the cheapest flight tickets to Denver International.

Compare Portland to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

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Flight deals from Portland to Denver International

Looking for a cheap last-minute deal or the best return flight from Portland to Denver International? Find the lowest prices on one-way and return tickets right here.

Denver.68 € per passenger.Departing Tue, 23 Sep, returning Tue, 30 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Tue, 23 Sep, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 30 Sep, arriving in Portland.Price includes taxes and charges.From 68 €, select.

Denver.75 € per passenger.Departing Thu, 16 Oct, returning Tue, 21 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Thu, 16 Oct, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 21 Oct, arriving in Portland.Price includes taxes and charges.From 75 €, select.

Denver.83 € per passenger.Departing Thu, 13 Nov, returning Sun, 16 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Thu, 13 Nov, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 16 Nov, arriving in Portland.Price includes taxes and charges.From 83 €, select.

Denver.83 € per passenger.Departing Thu, 30 Oct, returning Sun, 2 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Thu, 30 Oct, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 2 Nov, arriving in Portland.Price includes taxes and charges.From 83 €, select.

Denver.85 € per passenger.Departing Sat, 30 Aug, returning Wed, 3 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Sat, 30 Aug, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 3 Sep, arriving in Portland.Price includes taxes and charges.From 85 €, select.

Denver.85 € per passenger.Departing Thu, 18 Sep, returning Wed, 1 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Thu, 18 Sep, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 1 Oct, arriving in Portland.Price includes taxes and charges.From 85 €, select.

Denver.117 € per passenger.Departing Wed, 27 Aug, returning Sun, 31 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Portland on Wed, 27 Aug, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 31 Aug, arriving in Portland.Price includes taxes and charges.From 117 €, select.

Denver.134 € per passenger.Departing Sat, 13 Dec, returning Wed, 17 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Portland on Sat, 13 Dec, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Wed, 17 Dec, arriving in Portland.Price includes taxes and charges.From 134 €, select.

Find the cheapest month to fly from Portland to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Denver International flights are currently cheapest in September.

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Direct flights from Portland to Denver International

Portland to Denver International: Alternative routes

Compare routes from Portland to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Portland to Denver: Flight information

The things to know before you go.

Cheapest flight found	68 €
Cheapest month to fly	September
Average flight time	2 hrs, 32 mins
Most popular airline	Southwest Airlines
Average flights per week	145

Finding cheap flights from Portland to Denver International: Frequently asked questions

How much are return flights from Portland to Denver International?

How long does it take to fly from Portland to Denver International?

Which airlines fly direct from Portland to Denver International?

How many flights are there a week from Portland to Denver International?

When is the cheapest time to fly from Portland to Denver International?

Which upcoming date is cheapest to fly from Portland Airport to Denver International Airport on?

Can I get a direct flight from Portland Airport to Denver International Airport?

How can I find the best flight deal to Denver International?

When is the best time to book flights to Denver?

Which is the cheapest airline to fly from Portland Airport to Denver International with?

Flying from Portland International Airport (PDX) to Denver International Airport (DEN): what you need to know

Jump on a direct flight from Portland International Airport to Denver International Airport and you'll be in the air for an average of 2 hours 30 minutes.
Denver's timezone is UTC-6, making Denver one hour ahead of Portland.
Every week, there are 103 Portland International Airport to Denver International Airport flights. If you want to take off early, jump on the 00:28 Frontier Airlines flight. If you'd rather make the most of your time before flying, the latest flight is at 21:40 with Southwest Airlines.
Leave enough time to catch your PDX to DEN flight. A good rule of thumb is to arrive two hours before international departures and an hour ahead for domestic flights.
During popular months such as July, you'll want to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight when you travel during a high season in general.
You'll find a range of airlines operating direct flights from Portland International Airport to Denver International Airport. When you're ready to start your Denver holiday, let one of these carriers fly you to this must-see corner of United States:
The airline with the highest number of bookings on this route is Alaska Airlines.
Alaska Airlines is the most punctual carrier that operates PDX to DEN flights. A reliable 91.86% of its services on this route arrive without delay.
Think about adding a stopover when booking your ticket from Portland International Airport to Denver International Airport. Just deselect 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here are some options between PDX and DEN:
- Salt Lake City International Airport
- Seattle-Tacoma International Airport
- Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from Portland International Airport (PDX) to Denver International Airport (DEN)

The lowest price we've found for a one-way Portland International Airport to Denver International Airport flight is 38 €. A round-trip plane ticket is currently 68 €. Depending on the availability and when you book, these fares could change.
Book six months before you want to fly. After looking at the numbers on our calendar, this is how far you should book ahead to find cheap tickets from PDX to DEN.
Plan your trip for May. That's the cheapest month for flights from Portland International Airport to Denver International Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the lowest airfare across every month.
Finding cheap flights from PDX to DEN is a cinch with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when a new deal comes up.
Tailor your flights with filters. Pick your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Portland International Airport to Denver International Airport.

Handy information about Portland International Airport (PDX)

The address for PDX is 7000 NE Airport Way.
Portland International Airport gets top marks for on-time performance. 83.65% of flights that depart PDX reach their destination on time.
Central Portland to Portland International Airport is around 12 miles. Depending on traffic, it'll take about 20 minutes to get there if you're driving, ride-sharing or catching a cab.
The journey on public transport typically takes 45 minutes.
Catching an early flight from Portland International Airport to Denver International Airport? Avoid rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these hotels close to PDX:

Arriving at Denver International Airport (DEN)

Consider checking in to Baymont by Wyndham Denver International Airport after touching down from your Portland International Airport to Denver International Airport flight. It's a quick drive from DEN and a comfy option if you want to catch some z's soon after landing.
Go wherever you want, whenever you want with a Denver International Airport rental car. Book your wheels from Routes Car Rentals, Dollar or Budget and venture far and wide through Denver and beyond.
Lock in the best rate by booking your vehicle from Denver International Airport about one week ahead of your trip.

Getting from Denver International Airport (DEN) to central Denver

DEN is located at 8500 Pena Boulevard.
Denver International Airport to the centre of Denver has a drive time of around 35 minutes. It's approximately 25 miles away.
It typically takes 1 hour 30 minutes if you're travelling on public transport.

When to fly to Denver International Airport (DEN)

The quietest month for a flight from Portland International Airport to Denver International Airport is April, while July is the busiest. Pick the best time to go to Denver based on whether you prefer a laid-back vibe or a more bustling atmosphere.
When reserving your flight from Portland International Airport to Denver International Airport, think about the type of weather you like. July is the warmest month in Denver, with the temperature ranging from 14ºC (57ºF) to 32ºC (90ºF).
Look for cheap tickets from PDX to DEN in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between -9ºC (16ºF) and 7ºC (45ºF) on average.

Explore more of United States

Denver is always a good idea, but there are so many other corners of United States you'll want to see. About 65 miles south of Denver, a trip to Colorado Springs will fill your itinerary to the brim. Start with popular sights like US Northern Command (USNORTHCOM) / North American Aerospace Defence Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).
Aurora is another favourite destination in United States and is around 8 miles east of Denver. No journey is complete without a visit to Magellan's Travel Solutions and Gear, The Fairways at Lowry and Retired Enlisted Association Inc.