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Flights from Portland to Denver

Find cheap airlines flights from Portland to Denver

Choose from 3 carriers that fly from Portland to Denver, including Alaska Airlines, Frontier Airlines, and United Airlines. Enjoy the cheapest tickets on this route with Frontier Airlines.
Alaska Airlines logo Alaska Airlines Frontier Airlines logo Frontier Airlines United Airlines logo United Airlines

Book direct flights from Portland to Denver: One way flights from $20, round trip flights from $58. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        PDX 12:51 PM
        2h 28m
        Nonstop
        DEN 4:19 PM
        Portland - Denver | Thu, Dec 4 | Frontier Airlines
        DEN 9:56 AM
        3h
        Nonstop
        PDX 11:56 AM
        Denver - Portland | Sun, Dec 7 | Frontier Airlines
        $58 $118
        51% OFF
        51% OFF
        $118 $58
      • PDX 2:30 PM
        2h 35m
        Nonstop
        DEN 6:05 PM
        Portland - Denver | Sat, Nov 22 | Frontier Airlines
        DEN 1:10 PM
        2h 57m
        Nonstop
        PDX 3:07 PM
        Denver - Portland | Sun, Nov 23 | Frontier Airlines
        $59 $118
        50% OFF
        50% OFF
        $118 $59
      • PDX 12:47 PM
        2h 28m
        Nonstop
        DEN 4:15 PM
        Portland - Denver | Thu, Dec 18 | Frontier Airlines
        DEN 9:43 AM
        3h
        Nonstop
        PDX 11:43 AM
        Denver - Portland | Thu, Dec 25 | Frontier Airlines
        $59 $118
        50% OFF
        50% OFF
        $118 $59
      • PDX 12:51 PM
        2h 28m
        Nonstop
        DEN 4:19 PM
        Portland - Denver | Thu, Dec 11 | Frontier Airlines
        DEN 9:43 AM
        3h
        Nonstop
        PDX 11:43 AM
        Denver - Portland | Thu, Dec 18 | Frontier Airlines
        $60
        50% OFF
        $118 $60
      • PDX 12:55 PM
        2h 28m
        Nonstop
        DEN 4:23 PM
        Portland - Denver | Fri, Dec 12 | Frontier Airlines
        DEN 9:43 AM
        3h
        Nonstop
        PDX 11:43 AM
        Denver - Portland | Thu, Dec 18 | Frontier Airlines
        $61
        49% OFF
        $118 $61
      • PDX 12:55 PM
        2h 28m
        Nonstop
        DEN 4:23 PM
        Portland - Denver | Fri, Dec 5 | Frontier Airlines
        DEN 9:56 AM
        3h
        Nonstop
        PDX 11:56 AM
        Denver - Portland | Sun, Dec 7 | Frontier Airlines
        $61
        49% OFF
        $118 $61
      • PDX 12:05 PM
        2h 28m
        Nonstop
        DEN 3:33 PM
        Portland - Denver | Thu, Jan 8 | Frontier Airlines
        DEN 9:05 AM
        2h 59m
        Nonstop
        PDX 11:04 AM
        Denver - Portland | Thu, Jan 15 | Frontier Airlines
        $61
        49% OFF
        $118 $61
      • PDX 12:47 PM
        2h 28m
        Nonstop
        DEN 4:15 PM
        Portland - Denver | Sun, Jan 4 | Frontier Airlines
        DEN 9:15 AM
        3h
        Nonstop
        PDX 11:15 AM
        Denver - Portland | Sun, Jan 11 | Frontier Airlines
        $87
        26% OFF
        $118 $87
      • PDX 12:51 PM
        2h 28m
        Nonstop
        DEN 4:19 PM
        Portland - Denver | Sun, Dec 14 | Frontier Airlines
        DEN 9:43 AM
        3h
        Nonstop
        PDX 11:43 AM
        Denver - Portland | Thu, Dec 18 | Frontier Airlines
        $95
        19% OFF
        $118 $95
      • PDX 1:26 PM
        2h 47m
        Nonstop
        DEN 5:13 PM
        Portland - Denver | Tue, Nov 18 | Frontier Airlines
        DEN 9:52 AM
        4h 43m
        1 stop
        PDX 1:35 PM
        Denver - Portland | Sat, Nov 22 | Frontier Airlines
        $100
        15% OFF
        $118 $100
      • PDX 1:00 PM
        17h 25m
        1 stop
        DEN Invalid Date
        Portland - Denver | Tue, Nov 18 | Normal Airline
        DEN 3:00 PM
        6h
        Nonstop
        PDX 4:00 PM
        Denver - Portland | Thu, Nov 20 | Normal Airline
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Portland to Denver

The distance between Portland and Denver is about 1,592.49 km. It takes around 2 hours 45 minutes on average to fly from Portland to Denver. The most popular month to Denver is July. The off-season for travel is November.

Cheapest one-way flight price$20
Cheapest round-trip ticket price$58
Off-season for travelNovember
Peak season for travelJuly
Flight distance1,592.49 km
Average flight time2 hours 45 minutes
Popular airlineAlaska Airlines

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

The cheapest time for Portland to Denver flights: Nov 30 to Dec 7 — one way flight prices from $20.

Cheapest flights
From price
Search
  • 1623
  • 2330

  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer direct flights from Portland to Denver?

    At the moment, you can catch a nonstop flight from Portland to Denver with the following airlines, including: Frontier Airlines Alaska Airlines United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 2 hours 45 minutes to fly from Portland (PDX) to Denver (DEN).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to Denver is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 42 flight per week flying from Portland to Denver. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS684 (07:07) United Airlines: S/M/T/W/T/F/S -- UA459 (05:02)
  • The cheapest months to fly from Portland to Denver is November, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Portland to Denver on November 22, 2025 with Frontier Airlines, with prices starting at $58.
  • You can land at any one of the following hubs in Denver, with Portland International Airport to Denver International Airport (PDX-DEN) is by far the most common option on this route: Denver International Airport (DEN) Rocky Mountain Metropolitan Airport (BJC).
  • The time difference between Denver and Portland is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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