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$225+ Cheap flights from Decatur, IL to Portland (DEC - PDX)

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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — PDX
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Decatur to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to Portland (PDX). 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 September 11, 2025.

Round-trip from

$384
(United Airlines)

One-way from

$225
(United Airlines)
From Decatur Arpt to Portland
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One-way flight from Decatur Arpt to Portland
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Find flight deals from Decatur to Portland

Cheapest flights from Decatur to Portland
Explore the most affordable flight options available from Decatur to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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 11/187:08 pmDEC - PDX
1 stop18h 40mUnited Airlines
Sat 11/2211:59 pmPDX - DEC
1 stop6h 49mUnited Airlines
Deal found 9/11$404
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/259:38 amDEC - PDX
2 stops13h 12mUnited Airlines
Mon 9/2911:59 pmPDX - DEC
1 stop6h 52mUnited Airlines
Deal found 9/10$434
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/269:38 amDEC - PDX
2 stops12h 42mUnited Airlines
Sun 9/2811:59 pmPDX - DEC
1 stop6h 52mUnited Airlines
Deal found 9/10$460

Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur to Portland 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 September 11, 2025.
Use the filters below to find and compare flights from Decatur to Portland that are best for you.

Fly from

Decatur

Fly to

Portland

Route

Depart

Return

Price

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Wed 3/4

11:35 am-6:05 pm

1 stop8h 30m

Portland

Sun 3/8

10:56 pm-2:31 pm

2 stops13h 35m

$384

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Tue 11/18

7:08 pm-11:48 am

1 stop18h 40m

Portland

Sat 11/22

11:59 pm-8:48 am

1 stop6h 49m

$404

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Thu 9/25

9:38 am-8:50 pm

2 stops13h 12m

Portland

Mon 9/29

11:59 pm-8:51 am

1 stop6h 52m

$434

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Sat 10/25

9:38 am-10:30 pm

1 stop14h 52m

$225

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Tue 9/16

9:42 am-9:28 am

2 stops25h 46m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Decatur to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Decatur with our price prediction graph.
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 Decatur to Portland

What is the cheapest month to book a flight from Decatur, Illinois to Portland?

Currently, November is the cheapest month in which you can book a flight from Decatur, Illinois to Portland (average of $277). Flying from Decatur, Illinois to Portland in March is currently the most expensive (average of $368). 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.

Related info for your journey

Find useful and relevant information for your journey from Decatur to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Decatur, Illinois to Portland?

    Airlines like United Airlines fly from Decatur, Illinois to Portland in about 8h 30m. The time it takes to get you to your destination can typically vary by up to . The distance from Decatur, Illinois to Portland is about 1743 mi.

  • Can I find deals for flights from Decatur to Portland that include hotel bookings?

    Yes. In addition to deals on Decatur to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Decatur to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Decatur to Portland.

  • Can I find deals for business class flights from Decatur to Portland?

    Yes. Cheapflights offers flight deals from Decatur to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Decatur, Illinois to Portland?

    Currently, November is the cheapest month in which you can book a flight from Decatur, Illinois to Portland (average of $277). Flying from Decatur, Illinois to Portland in March is currently the most expensive (average of $368). 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.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
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Clackamas
McMinnville
Lake Oswego
Hillsboro
Cannon Beach
Long Beach
Longview
Lincoln City
Tigard
Depoe Bay
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Gresham
Silverton

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