$202 Cheap Flights from Phoenix (PHX) to Decatur (DEC)

View $202 flight on Thu, Mar 19, 2026Opens in a new window

Popular airlines from Phoenix Sky Harbor Intl. Airport (PHX) to Decatur, IL (DEC)

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Cheap Flights from Phoenix to Decatur (PHX-DEC)

Prices were available within the past 7 days and start at $202 for one-way flights and $284 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, May 16 - Mon, May 18
PHX
Phoenix
DEC
Decatur
$284 Roundtrip, found 5 days ago
$284
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Phoenix to Decatur, returning Mon, May 18, priced at $284 found 5 days ago
United
Sat, May 16 - Mon, May 18
PHX
Phoenix
DEC
Decatur
$294 Roundtrip, found 5 days ago
$294
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Phoenix to Decatur, returning Mon, May 18, priced at $294 found 5 days ago
United
Sat, May 16 - Mon, May 18
PHX
Phoenix
DEC
Decatur
$323 Roundtrip, found 5 days ago
$323
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Phoenix to Decatur, returning Mon, May 18, priced at $323 found 5 days ago
United
Sat, May 16 - Mon, May 18
PHX
Phoenix
DEC
Decatur
$332 Roundtrip, found 5 days ago
$332
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Phoenix to Decatur, returning Mon, May 18, priced at $332 found 5 days ago
United
Wed, Jul 1 - Thu, Jul 30
PHX
Phoenix
DEC
Decatur
$360 Roundtrip, found 5 days ago
$360
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jul 1 from Phoenix to Decatur, returning Thu, Jul 30, priced at $360 found 5 days ago
United
Sat, May 16 - Mon, May 18
PHX
Phoenix
DEC
Decatur
$364 Roundtrip, found 5 days ago
$364
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Phoenix to Decatur, returning Mon, May 18, priced at $364 found 5 days ago
United
Sat, Feb 14 - Wed, Feb 18
PHX
Phoenix
DEC
Decatur
$369 Roundtrip, found 3 days ago
$369
Roundtrip
found 3 days ago
Select United flight, departing Sat, Feb 14 from Phoenix to Decatur, returning Wed, Feb 18, priced at $369 found 3 days ago
United
Sat, Mar 14 - Thu, Apr 2
PHX
Phoenix
DEC
Decatur
$374 Roundtrip, found 2 days ago
$374
Roundtrip
found 2 days ago
Select United flight, departing Sat, Mar 14 from Phoenix to Decatur, returning Thu, Apr 2, priced at $374 found 2 days ago
United
Sat, Feb 14 - Wed, Feb 18
PHX
Phoenix
DEC
Decatur
$379 Roundtrip, found 3 days ago
$379
Roundtrip
found 3 days ago
Select United flight, departing Sat, Feb 14 from Phoenix to Decatur, returning Wed, Feb 18, priced at $379 found 3 days ago
United
Mon, May 18 - Sat, May 23
PHX
Phoenix
DEC
Decatur
$380 Roundtrip, found 1 day ago
$380
Roundtrip
found 1 day ago
Select United flight, departing Mon, May 18 from Phoenix to Decatur, returning Sat, May 23, priced at $380 found 1 day ago
Flights from Phoenix (PHX) to Decatur (DEC)
Origin airport
Sky Harbor Intl.
Destination airport
Decatur
Airlines serving
United
Roundtrip price
$284
Distance
1351 mi

Phoenix to Decatur Flights

The cheapest times to fly from Phoenix 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 Phoenix to Decatur are during the month of May. You can find some of the cheapest flights from Phoenix to Decatur with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Phoenix to Decatur

Sunday is one of the best days to book for cheap flights from Phoenix 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 Phoenix 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 Phoenix to Decatur in 2026. You can also book with separate airlines for your outbound and return journeys, from $202 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 Phoenix 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 Phoenix 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.

 

Frequently asked questions

How much does a flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) cost?
You can find cheap one-way flights from $202 and cheap return flights from $284 Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) with Expedia. Return flights often range between $382 and $1058. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
The cheapest month to fly from PHX to DEC is May when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
Enter PHX to DEC and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
United is one of the cheapest airlines offering connecting flights from Sky Harbor Intl. (PHX) to Decatur (DEC), with round-trip tickets starting from around $368. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
To find a cheap flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from PHX to DEC. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
The busiest day for flights from Sky Harbor Intl. (PHX) to (DEC) is a Sunday, with around 16 flights. This gives you plenty of options for your travel plans. Major airlines on this route include United and Delta.
What are the most popular departure times for flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
The most popular departure times for flights from Sky Harbor Intl. (PHX) to Decatur (DEC) are in the early morning, from 6am to 9am. About 54% of passengers choose this time window. United Airlines and Delta Airlines are among the carriers that offer flights during this period. This timing is favored because it helps travelers make the most of their day upon arrival.
How long does it take to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
A flight from PHX to DEC with a layover takes around 6 hours 50 minutes, with the route covering approximately 1,352 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
Select the "Business class" and "First class" filters when looking for PHX to DEC flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) flight with Expedia?
It's easy to earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) at the last minute?
Typically, booking a last minute flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) flight and hotel package?
Securing a Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC)?
If you booked your Phoenix, AZ (PHX-Sky Harbor Intl.) to Decatur, IL (DEC) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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*Available to One Key members.