HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Decatur

$394+ Cheap flights from Portland to Decatur, IL (PDX - DEC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — DEC
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Decatur with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portland to Decatur

Cheapest flights from Portland to Decatur
Explore the most affordable flight options available from Portland to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This United Airlines deal was found by Cheapflights users on 2/2. 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 10/2810:59 pm
PDX
-
DEC
1 stop7h 47m
United Airlines
Sat 10/316:55 pm
DEC
-
PDX
1 stop6h 57m
United Airlines
Deal found 2/2$394
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/1411:59 pm
PDX
-
DEC
1 stop6h 53m
United Airlines
Tue 3/177:15 pm
DEC
-
PDX
1 stop29h 30m
United Airlines
Deal found 2/2$414

Find flight deals from Portland to Decatur

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Decatur (DEC). 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$414
(United Airlines)
Provider with most accurate pricing for Portland-Decatur Arpt flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Decatur Arpt flights.
Search Deals
From Portland to Decatur Arpt
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Decatur 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 February 3, 2026.
Use the filters below to find and compare flights from Portland to Decatur that are best for you.

Fly from

Portland

Fly to

Decatur

Route

Depart

Return

Price

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Sat 3/14

11:59 pm-8:52 am

1 stop6h 53m

Decatur Arpt

Tue 3/17

7:15 pm-10:45 pm

1 stop29h 30m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Compare providers for flights from Portland to Decatur

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Decatur in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Decatur, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Decatur, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Decatur, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Decatur, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub 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 Portland-Decatur, Illinois 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 Portland to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Portland 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 Portland to Decatur

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

Currently, April is the cheapest month in which you can book a flight from Portland to Decatur, Illinois (average of $228). Flying from Portland to Decatur, Illinois in March is currently the most expensive (average of $958). 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.

Reviews of airlines servicing Decatur

Get insights into the airlines that provide service to Decatur. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Decatur. Reviews last updated February 3, 2026.
Get a feel of what it's like to fly with United Airlines from Portland to Decatur by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,236 reviews
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Portland to Decatur. 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 Portland to Decatur, Illinois?

    Airlines like United Airlines fly from Portland to Decatur, Illinois in about 6h 53m. The time it takes to get you to your destination can typically vary by up to . The distance from Portland to Decatur, Illinois is about 1743 mi.

  • What is the cheapest airline to fly from Portland to Decatur, Illinois round-trip?

    Our cheapest airline available from Portland to Decatur, Illinois is United Airlines. Our recent data shows that you can find tickets from as low as $331 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Decatur 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 Portland to Decatur, Illinois?

    Currently, April is the cheapest month in which you can book a flight from Portland to Decatur, Illinois (average of $228). Flying from Portland to Decatur, Illinois in March is currently the most expensive (average of $958). 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 Decatur?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Decatur

See prices for flight routes from nearby airports that may be better suited for you.
Portland to O'Hare Intl flights
Boise to O'Hare Intl flights
Portland to Midway flights
Portland to St. Louis flights
Boise to Midway flights
Boise to St. Louis flights
Eugene to O'Hare Intl flights
Eugene to St. Louis flights
Medford to O'Hare Intl flights
Eugene to Midway flights
Medford to Midway flights
Redmond to O'Hare Intl flights
Redmond to St. Louis flights
Portland to Peoria flights
Portland to Paducah flights
Portland to Champaign flights
Portland to Bloomington flights
Portland to Evansville flights
Redmond to Midway flights
Medford to St. Louis flights
Portland to Moline flights
Portland to Dubuque flights
Yakima to O'Hare Intl flights
Eugene to Moline flights
Boise to Peoria flights
Boise to Bloomington flights
Portland to Rockford flights
Boise to Springfield flights
Boise to Champaign flights
Boise to Moline flights
Boise to Paducah flights
Redmond to Evansville flights
Redmond to Bloomington flights
Portland to Springfield flights
North Bend to O'Hare Intl flights
Boise to Quincy flights
Eugene to Dubuque flights
Portland to Marion flights
Eugene to Peoria flights
Eugene to Springfield flights
Medford to Bloomington flights

Top airline flying from Portland to Decatur

Discover the top airline that operate flights from Portland to Decatur. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$331Average$426FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights