$330 Cheap Flights from Portland (PDX) to Decatur (DEC)

View $330 flight on Mon, Nov 3, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Decatur, IL (DEC)

Cheap Flights from Portland to Decatur (PDX-DEC)

Prices were available within the past 7 days and start at $330 for one-way flights and $519 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Dec 25 - Sat, Jan 3
PDX
Portland
DEC
Decatur
$519 Roundtrip, found 4 days ago
$519
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 25 from Portland to Decatur, returning Sat, Jan 3, priced at $519 found 4 days ago
United
Wed, Dec 24 - Sat, Jan 3
PDX
Portland
DEC
Decatur
$529 Roundtrip, found 4 days ago
$529
Roundtrip
found 4 days ago
Select United flight, departing Wed, Dec 24 from Portland to Decatur, returning Sat, Jan 3, priced at $529 found 4 days ago
United
Thu, Dec 25 - Wed, Dec 31
PDX
Portland
DEC
Decatur
$553 Roundtrip, found 4 days ago
$553
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 25 from Portland to Decatur, returning Wed, Dec 31, priced at $553 found 4 days ago
United
Wed, Dec 24 - Wed, Dec 31
PDX
Portland
DEC
Decatur
$563 Roundtrip, found 4 days ago
$563
Roundtrip
found 4 days ago
Select United flight, departing Wed, Dec 24 from Portland to Decatur, returning Wed, Dec 31, priced at $563 found 4 days ago
United
Tue, Dec 23 - Sat, Jan 3
PDX
Portland
DEC
Decatur
$570 Roundtrip, found 4 days ago
$570
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 23 from Portland to Decatur, returning Sat, Jan 3, priced at $570 found 4 days ago
United
Thu, Dec 25 - Mon, Dec 29
PDX
Portland
DEC
Decatur
$594 Roundtrip, found 4 days ago
$594
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 25 from Portland to Decatur, returning Mon, Dec 29, priced at $594 found 4 days ago
United
Wed, Dec 24 - Mon, Dec 29
PDX
Portland
DEC
Decatur
$604 Roundtrip, found 4 days ago
$604
Roundtrip
found 4 days ago
Select United flight, departing Wed, Dec 24 from Portland to Decatur, returning Mon, Dec 29, priced at $604 found 4 days ago

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Decatur Airport (DEC) cost?
Get a cheap one-way flight from $330 or cheap return flight from $519 from Portland Intl. Airport (PDX) to Decatur Airport (DEC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Decatur Airport (DEC)?
The cheapest month to fly from PDX to DEC is December, when demand is low. Off-peak months are generally when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Decatur Airport (DEC)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from PDX to DEC. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Portland Intl. Airport (PDX) to Decatur Airport (DEC)?
You'll need to catch a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Decatur Airport (DEC). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from PDX to DEC?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Decatur Airport (DEC)?
To arrive at Decatur Airport (DEC) on time, book a flight that leaves Portland Intl. Airport (PDX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Decatur Airport (DEC) last-minute?
Last-minute bookings from PDX to DEC are typically more expensive. To secure the best rates, start looking for flights early. That said, if you can play around with your travel dates, you may score a cheap ticket right before your trip.
Is it cheaper to book a PDX to DEC flight and hotel package?
Compared with arranging hotels and flights separately, booking a PDX to DEC flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Decatur Airport (DEC)?
Usually, it's possible to cancel or reschedule your PDX to DEC flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Portland Intl.
Destination airport
Decatur
Roundtrip price
$519
Distance
1743 mi

Book with confidence

Book with confidence

Portland to Decatur Flights

The cheapest times to fly from Portland to Decatur

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Decatur are during the month of December. You can find some of the cheapest flights from Portland to Decatur with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Decatur

Sunday is one of the best days to book for cheap flights from Portland to Decatur: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Decatur

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Decatur in 2025. You can also book with separate airlines for your outbound and return journeys, from $330 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Decatur flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Decatur airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Decatur Flights

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*Available to One Key members.