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$321+ Cheap flights from Decatur, IL to Boston (DEC - BOS)

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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — BOS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Decatur to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to Boston (BOS). 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 September 15, 2025.

Round-trip from

$325
(United Airlines)

One-way from

$321
(United Airlines)
From Decatur Arpt to Boston Logan Intl
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One-way flight from Decatur Arpt to Boston Logan Intl
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Find flight deals from Decatur to Boston

Cheapest flights from Decatur to Boston
Explore the most affordable flight options available from Decatur to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/13. 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 10/259:38 amDEC - BOS
1 stop6h 24mUnited Airlines
Sat 11/112:25 pmBOS - DEC
1 stop6h 27mUnited Airlines
Deal found 9/13$325
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/39:38 amDEC - BOS
2 stops9h 23mUnited Airlines
Mon 10/612:35 pmBOS - DEC
1 stop6h 29mUnited Airlines
Deal found 9/15$352
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 9/296:55 pmDEC - BOS
1 stop4h 55mUnited Airlines
Fri 10/36:15 pmBOS - DEC
1 stop15h 36mUnited Airlines
Deal found 9/14$360
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/277:09 pmDEC - BOS
1 stop4h 36mUnited Airlines
Tue 12/3012:20 pmBOS - DEC
1 stop6h 39mUnited Airlines
Deal found 9/14$375
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/277:09 pmDEC - BOS
1 stop4h 36mUnited Airlines
Thu 1/112:20 pmBOS - DEC
1 stop6h 39mUnited Airlines
Deal found 9/14$376
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/59:44 amDEC - BOS
1 stop5h 26mUnited Airlines
Sat 11/812:25 pmBOS - DEC
1 stop6h 27mUnited Airlines
Deal found 9/13$379
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/267:09 pmDEC - BOS
1 stop4h 36mUnited Airlines
Tue 12/3012:20 pmBOS - DEC
1 stop6h 39mUnited Airlines
Deal found 9/14$419

Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur to Boston 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 September 15, 2025.
Use the filters below to find and compare flights from Decatur to Boston that are best for you.

Fly from

Decatur

Fly to

Boston

Route

Depart

Return

Price

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Sat 10/25

9:38 am-5:02 pm

1 stop6h 24m

Boston Logan Intl

Sat 11/1

8:15 am-5:52 pm

2 stops10h 37m

$334

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Fri 10/3

9:38 am-8:01 pm

2 stops9h 23m

Boston Logan Intl

Mon 10/6

12:35 pm-6:04 pm

1 stop6h 29m

$352

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Mon 9/29

6:55 pm-12:50 am

1 stop4h 55m

Boston Logan Intl

Fri 10/3

6:15 pm-8:51 am

1 stop15h 36m

$360

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Sat 12/27

7:09 pm-12:45 am

1 stop4h 36m

Boston Logan Intl

Thu 1/1

12:20 pm-5:59 pm

1 stop6h 39m

$375

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Sat 12/27

7:09 pm-12:45 am

1 stop4h 36m

Boston Logan Intl

Tue 12/30

12:20 pm-5:59 pm

1 stop6h 39m

$375

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Wed 11/5

9:44 am-4:10 pm

1 stop5h 26m

Boston Logan Intl

Sat 11/8

12:25 pm-5:52 pm

1 stop6h 27m

$379

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Fri 12/26

7:09 pm-12:45 am

1 stop4h 36m

Boston Logan Intl

Tue 12/30

12:20 pm-5:59 pm

1 stop6h 39m

$419

DecaturBoston

DEC - BOS

DECBOS

Decatur Arpt

Thu 10/16

9:38 am-12:50 am

1 stop14h 12m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Decatur to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston 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.

Cheapflights Insights

Everything you need to know about your flight from Decatur to Boston

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

Currently, January is the cheapest month in which you can book a flight from Decatur, Illinois to Boston (average of $218). Flying from Decatur, Illinois to Boston in July is currently the most expensive (average of $311). 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.

Related info for your journey

Find useful and relevant information for your journey from Decatur to Boston. 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 Boston?

    Departing from Decatur, Illinois to Boston will take you 6h 24m. The distance between Decatur, Illinois and Boston is about 944 mi.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Decatur, Illinois to Boston (average of $218). Flying from Decatur, Illinois to Boston in July is currently the most expensive (average of $311). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Chelsea
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Peabody
Quincy
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Waltham
Saugus
Burlington

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