How long is the flight from Decatur, Illinois to Japan?

United Airlines can get you from Decatur, Illinois to Japan in just under 29h 22m. Your travel time can differ by up to . Airlines will cover a distance of 6342 mi.

In terms of precipitation, rainfall in Japan ranges from 2.0 - 8.3 inches per month. September is typically the wettest month, when rainfall can reach 8.3 in. January is typically the driest time to visit Japan when rainfall is around 2.0 in.

If weather is an important factor for your trip to Japan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

What is the cheapest time of day to fly from DEC to JP?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Decatur, Illinois to Japan as you normally would.

What airport do you fly from for flights from Decatur to Japan?

If you book a flight to Japan from Decatur, you will be flying from Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.

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

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

How can I find direct flights from Decatur to Japan?

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

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

Yes. Cheapflights offers flight deals from Decatur to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,071+ Flights from Decatur, IL to Japan

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Cheap flight deals from Decatur to Japan

Round-trip from	$1,125 (United Airlines)
One-way from	$957 (United Airlines)

From Decatur Arpt to Japan

Search Deals

One-way flight from Decatur Arpt to Japan

Search Deals

Find flight deals from Decatur to Japan

Cheapest flights from Decatur to Japan
Explore the most affordable flight options available from Decatur to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

vie. 10/319:44 amDEC - HND

1 stop18h 01mUnited Airlines

vie. 11/76:20 pmHND - DEC

1 stop14h 32mUnited Airlines

Deal found 10/30

$1,071

sáb. 11/87:08 pmDEC - HND

2 stops30h 22mUnited Airlines

mié. 11/1210:25 amHND - DEC

1 stop22h 27mUnited Airlines

Deal found 10/30

$1,124

sáb. 11/17:08 pmDEC - HND

1 stop32h 37mUnited Airlines

mié. 11/510:25 amHND - DEC

1 stop22h 27mUnited Airlines

Deal found 10/28

$1,125

sáb. 12/67:08 pmDEC - NRT

2 stops29h 22mUnited Airlines

mié. 12/105:05 pmNRT - DEC

1 stop15h 47mUnited Airlines

Deal found 10/28

$1,125

dom. 12/147:08 pmDEC - HND

2 stops30h 22mUnited Airlines

dom. 12/216:20 pmHND - DEC

1 stop14h 39mUnited Airlines

Deal found 10/30

$1,306

dom. 12/147:08 pmDEC - NRT

2 stops28h 52mUnited Airlines

dom. 12/215:05 pmNRT - DEC

1 stop15h 54mUnited Airlines

Deal found 10/30

$1,308

sáb. 12/137:08 pmDEC - NRT

2 stops53h 47mUnited Airlines

sáb. 12/205:05 pmNRT - DEC

1 stop15h 54mUnited Airlines

Deal found 10/29

$1,329

sáb. 12/137:08 pmDEC - HND

1 stop31h 37mUnited Airlines

sáb. 12/206:20 pmHND - DEC

1 stop14h 39mUnited Airlines

Deal found 10/29

$1,575

sáb. 11/17:08 pmDEC - NRT

1 stop29h 52mUnited Airlines

vie. 11/75:05 pmNRT - DEC

1 stop15h 47mUnited Airlines

Deal found 10/28

$3,589

Best flights from Decatur to Japan
Discover carefully curated flight deals from Decatur to Japan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated octubre 30, 2025.

sáb. 12/67:08 pmDEC - NRT

2 stops29h 22mUnited Airlines

mié. 12/105:05 pmNRT - DEC

1 stop15h 47mUnited Airlines

Deal found 10/28

$1,125

dom. 12/147:08 pmDEC - NRT

2 stops28h 52mUnited Airlines

dom. 12/215:05 pmNRT - DEC

1 stop15h 54mUnited Airlines

Deal found 10/30

$1,308

dom. 12/147:08 pmDEC - HND

2 stops30h 22mUnited Airlines

dom. 12/219:05 pmHND - DEC

2 stops27h 00mUnited Airlines

Deal found 10/30

$1,311

sáb. 12/137:08 pmDEC - NRT

2 stops53h 47mUnited Airlines

sáb. 12/205:05 pmNRT - DEC

1 stop15h 54mUnited Airlines

Deal found 10/29

$1,329

sáb. 12/137:08 pmDEC - HND

1 stop31h 37mUnited Airlines

sáb. 12/206:20 pmHND - DEC

1 stop14h 39mUnited Airlines

Deal found 10/29

$1,575

Last-minute flights from Decatur to Japan
Discover last-minute flight deals from Decatur to Japan. Data last updated octubre 30, 2025 and is based on user searches.

vie. 10/319:44 amDEC - HND

1 stop18h 01mUnited Airlines

vie. 11/76:20 pmHND - DEC

1 stop14h 32mUnited Airlines

Deal found 10/30

$1,071

sáb. 11/17:08 pmDEC - HND

1 stop32h 37mUnited Airlines

mié. 11/510:25 amHND - DEC

1 stop22h 27mUnited Airlines

Deal found 10/28

$1,125

sáb. 11/17:08 pmDEC - HND

1 stop35h 57mUnited Airlines

vie. 11/710:25 amHND - DEC

1 stop22h 27mUnited Airlines

Deal found 10/28

$3,588

sáb. 11/17:08 pmDEC - NRT

1 stop29h 52mUnited Airlines

vie. 11/75:05 pmNRT - DEC

1 stop15h 47mUnited Airlines

Deal found 10/28

$3,589

sáb. 11/87:08 pmDEC - HND

2 stops30h 22mUnited Airlines

mié. 11/1210:25 amHND - DEC

1 stop22h 27mUnited Airlines

Deal found 10/30

$1,124

Fly from

Fly to

Route

Depart

Return

Price

DecaturTokyo

DEC - NRT

DECNRT

Decatur Arpt

sáb. 12/6

7:08 pm-3:30 pm

2 stops29h 22m

Tokyo Narita

mié. 12/10

5:05 pm-5:52 pm

1 stop15h 47m

$1,125

DecaturTokyo

DEC - NRT

DECNRT

Decatur Arpt

dom. 12/14

7:08 pm-3:00 pm

2 stops28h 52m

Tokyo Narita

dom. 12/21

5:05 pm-5:59 pm

1 stop15h 54m

$1,308

DecaturTokyo

DEC - HND

DECHND

Decatur Arpt

dom. 12/14

7:08 pm-4:30 pm

2 stops30h 22m

Tokyo Haneda

dom. 12/21

9:05 pm-9:05 am

2 stops27h 00m

$1,311

DecaturTokyo

DEC - NRT

DECNRT

Decatur Arpt

sáb. 12/13

7:08 pm-3:55 pm

2 stops53h 47m

Tokyo Narita

sáb. 12/20

5:05 pm-5:59 pm

1 stop15h 54m

$1,329

DecaturTokyo

DEC - HND

DECHND

Decatur Arpt

sáb. 12/13

7:08 pm-5:45 pm

1 stop31h 37m

Tokyo Haneda

sáb. 12/20

6:20 pm-5:59 pm

1 stop14h 39m

$1,575

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Best time to book a flight from Decatur to Japan

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

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Decatur to Japan?
If you book a flight to Japan from Decatur, you will be flying from Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.
How long is the flight from Decatur, Illinois to Japan?
United Airlines can get you from Decatur, Illinois to Japan in just under 29h 22m. Your travel time can differ by up to . Airlines will cover a distance of 6342 mi.
Can I find deals for flights from Decatur to Japan that include hotel bookings?
Yes. In addition to deals on Decatur to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Decatur to Japan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Decatur to Japan.
Can I find deals for business class flights from Decatur to Japan?
Yes. Cheapflights offers flight deals from Decatur to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$1,071+ Cheap flights from Decatur, IL (DEC) to Japan

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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Decatur to Japan with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Decatur to Japan

Keep the following information in mind while searching for Decatur to Japan flight deals. Data was last updated octubre 30, 2025.

Round-trip from

One-way from

Find flight deals from Decatur to Japan

Cheapest flights from Decatur to JapanExplore the most affordable flight options available from Decatur to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

Explore the most affordable flight options available from Decatur to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Decatur to Japan that are best for you.

Best time to book a flight from Decatur to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Decatur with our price prediction graph.

Cheapflights Insights

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

Related info for your journey

Find useful and relevant information for your journey from Decatur to Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Decatur to Japan?

How long is the flight from Decatur, Illinois to Japan?

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

How can I find direct flights from Decatur to Japan?

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

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Cheapest flights from Decatur to Japan
Explore the most affordable flight options available from Decatur to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.