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Cheap flights from Portland to Decatur from $320

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Decatur departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to Decatur

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 6:10 pmPDX  Portland-DEC Decatur Arpt
9h 10m1 stop Chicago O'Hare Intl
United Airlines Logo
7:02 pm - 7:12 pmDEC  Decatur Arpt-PDX Portland
26h 10m1 stop Chicago O'Hare Intl
$473United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
7:00 am - 6:10 pmPDX  Portland-DEC Decatur Arpt
9h 10m1 stop Chicago O'Hare Intl
United Airlines Logo
7:02 pm - 9:02 pmDEC  Decatur Arpt-PDX Portland
28h 00m2 stops Chicago O'Hare Intl San Francisco
$479United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
8:15 am - 5:59 pmPDX  Portland-DEC Decatur Arpt
7h 44m1 stop Chicago O'Hare Intl
United Airlines Logo
7:20 pm - 12:00 pmDEC  Decatur Arpt-PDX Portland
18h 40m2 stops Chicago O'Hare Intl San Francisco
$483United Airlines
Fri, Sep 4 - Tue, Sep 8
United Airlines Logo
7:26 pm - 8:35 amPDX  Portland-DEC Decatur Arpt
11h 09m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
7:02 pm - 6:20 pmDEC  Decatur Arpt-PDX Portland
25h 18m2 stops Chicago O'Hare Intl San Francisco
$488United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
8:15 am - 5:59 pmPDX  Portland-DEC Decatur Arpt
7h 44m1 stop Chicago O'Hare Intl
United Airlines Logo
7:20 pm - 10:52 pmDEC  Decatur Arpt-PDX Portland
29h 32m1 stop Chicago O'Hare Intl
$508United Airlines
Fri, Aug 28 - Tue, Sep 1
United Airlines Logo
7:16 am - 5:59 pmPDX  Portland-DEC Decatur Arpt
8h 43m1 stop Chicago O'Hare Intl
United Airlines Logo
7:20 pm - 9:32 amDEC  Decatur Arpt-PDX Portland
16h 12m2 stops Chicago O'Hare Intl Denver Intl
$518United Airlines
Fri, Aug 28 - Tue, Sep 1
United Airlines Logo
7:26 pm - 8:35 amPDX  Portland-DEC Decatur Arpt
11h 09m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
7:02 pm - 11:47 amDEC  Decatur Arpt-PDX Portland
18h 45m1 stop Chicago O'Hare Intl
$539United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
7:26 pm - 6:10 pmPDX  Portland-DEC Decatur Arpt
20h 44m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
9:10 am - 9:02 pmDEC  Decatur Arpt-PDX Portland
13h 52m2 stops Chicago O'Hare Intl San Francisco
$542United Airlines
Mon, Oct 26 - Thu, Nov 5
United Airlines Logo
7:26 pm - 8:35 amPDX  Portland-DEC Decatur Arpt
11h 09m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
7:02 pm - 6:20 pmDEC  Decatur Arpt-PDX Portland
25h 18m2 stops Chicago O'Hare Intl San Francisco
$544United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
7:00 am - 6:10 pmPDX  Portland-DEC Decatur Arpt
9h 10m1 stop Chicago O'Hare Intl
United Airlines Logo
7:02 pm - 7:12 pmDEC  Decatur Arpt-PDX Portland
26h 10m1 stop Chicago O'Hare Intl
$545United Airlines
Tue, Oct 27 - Tue, Nov 3

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United Airlines flights from Portland to Decatur, Illinois

Our best United Airlines deals on Portland to Decatur, Illinois flight tickets
United Airlines
Oct 27
PDX7:00 amPortland
9h 10m
1 stop
DEC6:10 pmDecatur Arpt
Nov 3
DEC7:02 pmDecatur Arpt
26h 10m
1 stop
PDX7:12 pmPortland
$473
United Airlines
Oct 27
PDX7:00 amPortland
9h 10m
1 stop
DEC6:10 pmDecatur Arpt
Nov 3
DEC7:02 pmDecatur Arpt
28h 00m
2 stops
PDX9:02 pmPortland
$479
United Airlines
Sep 4
PDX8:15 amPortland
7h 44m
1 stop
DEC5:59 pmDecatur Arpt
Sep 8
DEC7:20 pmDecatur Arpt
18h 40m
2 stops
PDX12:00 pmPortland
$483

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Decatur, Illinois 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, momondo users made 832,500 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Portland to Decatur, Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Tue 10/27

7:00 am-6:10 pm

1 stop9h 10m

Decatur Arpt

Tue 11/3

7:02 pm-7:12 pm

1 stop26h 10m

$473

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Tue 10/27

7:00 am-6:10 pm

1 stop9h 10m

Decatur Arpt

Tue 11/3

7:02 pm-9:02 pm

2 stops28h 00m

$479

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Fri 9/4

8:15 am-5:59 pm

1 stop7h 44m

Decatur Arpt

Tue 9/8

7:20 pm-12:00 pm

2 stops18h 40m

$483

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Tue 10/27

7:26 pm-8:35 am

2 stops11h 09m

Decatur Arpt

Tue 11/3

7:02 pm-6:20 pm

2 stops25h 18m

$488

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Fri 8/28

8:15 am-5:59 pm

1 stop7h 44m

Decatur Arpt

Tue 9/1

7:20 pm-10:52 pm

1 stop29h 32m

$508
Quickest round-trip

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Fri 8/28

7:16 am-5:59 pm

1 stop8h 43m

Decatur Arpt

Tue 9/1

7:20 pm-9:32 am

2 stops16h 12m

$518

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Tue 10/27

7:26 pm-8:35 am

2 stops11h 09m

Decatur Arpt

Tue 11/3

7:02 pm-11:47 am

1 stop18h 45m

$539

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Mon 10/26

7:26 pm-6:10 pm

2 stops20h 44m

Decatur Arpt

Thu 11/5

9:10 am-9:02 pm

2 stops13h 52m

$542

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Tue 10/27

7:26 pm-8:35 am

2 stops11h 09m

Decatur Arpt

Tue 11/3

7:02 pm-6:20 pm

2 stops25h 18m

$544

PortlandDecatur

PDX Portland - DEC Decatur Arpt

PDXDEC

Portland

Tue 10/27

7:00 am-6:10 pm

1 stop9h 10m

Decatur Arpt

Tue 11/3

7:02 pm-7:12 pm

1 stop26h 10m

$545

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Decatur from

How to get the cheapest flight ticket from Portland to Decatur, Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Portland to Decatur Arpt?

United Airlines is the most popular carrier operating from Portland to Decatur Arpt

When to book flights from Portland to Decatur, Illinois

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Decatur, Illinois according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Decatur, Illinois (PDX to DEC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Decatur, Illinois

Fastest flight time

7h 44m

Direct flights

None
The fastest flight from Portland to Decatur, Illinois takes 7h 44m
There are no direct flights from Portland to Decatur, Illinois. There are no popular flight routes from Portland to Decatur, Illinois.
Search flight deals

Frequently asked questions about flying from Portland to Decatur, Illinois

  • How far is Portland to Decatur Arpt by plane?

    Portland and Decatur Arpt are 1742.3 mi apart from one another. Typically, this will take 7h 44m by plane in normal conditions.

  • When did momondo last update prices for flights from Portland Airport to Decatur Arpt Airport?

    Prices for flights from Portland Airport to Decatur Arpt Airport refresh daily.

  • How old do you have to be to fly from Portland Airport to Decatur Arpt Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Decatur Arpt Airport.

  • What documentation or ID do you need to fly to Decatur Arpt Airport?

    The necessary travel and health documents for your Decatur Arpt Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
Effingham
Mattoon
Forsyth

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Decatur?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Decatur from Portland.

Can I find flights from Portland to Decatur with flexible booking policies on momondo?

All flight searches from Portland to Decatur on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Decatur?

Once you have performed a search for Portland to Decatur flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to Decatur right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Decatur flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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