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$406+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — PDX
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Cheap 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 July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/23. 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 8/76:45 pm
DEC
-
PDX
1 stop16h 49m
United Airlines
Tue 8/1111:02 pm
PDX
-
DEC
1 stop6h 07m
United Airlines
Deal found 7/23$594
This United Airlines deal was found by Cheapflights users on 7/24. 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 8/86:45 pm
DEC
-
PDX
1 stop18h 52m
United Airlines
Wed 8/127:16 am
PDX
-
DEC
1 stop8h 43m
United Airlines
Deal found 7/24$617
This United Airlines deal was found by Cheapflights users on 7/22. 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 10/276:55 pm
DEC
-
PDX
1 stop18h 58m
United Airlines
Fri 10/3010:59 pm
PDX
-
DEC
1 stop16h 52m
United Airlines
Deal found 7/22$641
This United Airlines deal was found by Cheapflights users on 7/24. 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 8/129:12 am
DEC
-
PDX
1 stop11h 41m
United Airlines
Sun 8/1611:02 pm
PDX
-
DEC
1 stop16h 57m
United Airlines
Deal found 7/24$664
This United Airlines deal was found by Cheapflights users on 7/22. 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 8/66:45 pm
DEC
-
PDX
1 stop16h 49m
United Airlines
Mon 8/1011:40 pm
PDX
-
DEC
1 stop16h 19m
United Airlines
Deal found 7/22$752

Find 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 July 27, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$566
(United Airlines)

One-way from

$406
(United Airlines)
Provider with most accurate pricing for Decatur Arpt-Portland flight deals.
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Provider most trusted by Cheapflights users for Decatur Arpt-Portland flights.
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From Decatur Arpt to Portland
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One-way flight from Decatur Arpt to Portland
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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 July 27, 2026.
Use the filters below to find and compare flights from Decatur to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Fri 8/7

6:45 pm-9:47 am

2 stops17h 02m

Portland

Tue 8/11

11:02 pm-7:09 am

1 stop6h 07m

$604

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Sat 8/8

6:45 pm-11:37 am

1 stop18h 52m

Portland

Wed 8/12

7:16 am-5:59 pm

1 stop8h 43m

$617

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Tue 10/27

6:55 pm-11:53 am

1 stop18h 58m

Portland

Fri 10/30

10:59 pm-5:51 pm

1 stop16h 52m

$641

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Wed 8/12

9:12 am-6:53 pm

1 stop11h 41m

Portland

Sun 8/16

11:02 pm-5:59 pm

1 stop16h 57m

$664

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Thu 8/6

6:45 pm-9:34 am

1 stop16h 49m

Portland

Mon 8/10

11:40 pm-5:59 pm

1 stop16h 19m

$752
Cheapest one-way
Quickest one-way

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Tue 8/4

6:45 pm-6:47 pm

1 stop26h 02m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Decatur, Illinois-Portland flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Decatur, Illinois-Portland flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Decatur, Illinois-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Decatur, Illinois-Portland flights, Cheapflights users trust Expedia the most. Expedia 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 Decatur, Illinois-Portland 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 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.

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 17h 02m. 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.

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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Hillsboro
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Clackamas
Troutdale
Cannon Beach
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Gresham

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