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

United Airlines can get you from Decatur, Illinois to Japan in just under 16h 55m. Your travel time can differ by up to . Airlines will cover a distance of 6374 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.

$982+ Flights from Decatur, IL to Japan

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Cheap 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 January 29, 2026.

Wed 2/259:50 am

DEC

HND

1 stop16h 55m

United Airlines

Tue 3/1010:25 am

HND

DEC

1 stop21h 28m

United Airlines

Deal found 1/27

$982

Wed 1/287:09 pm

DEC

HND

2 stops30h 21m

United Airlines

Sun 2/16:20 pm

HND

DEC

1 stop14h 41m

United Airlines

Deal found 1/26

$1,025

Wed 1/289:49 am

DEC

NRT

2 stops38h 11m

United Airlines

Sun 2/15:05 pm

NRT

DEC

1 stop15h 56m

United Airlines

Deal found 1/26

$1,026

Thu 1/299:49 am

DEC

NRT

2 stops38h 41m

United Airlines

Mon 2/25:35 pm

NRT

DEC

2 stops30h 30m

United Airlines

Deal found 1/28

$1,032

Sun 2/229:50 am

DEC

HND

1 stop16h 55m

United Airlines

Sat 2/287:40 pm

HND

DEC

2 stops28h 12m

United Airlines

Deal found 1/27

$1,067

Sun 2/229:50 am

DEC

NRT

2 stops38h 10m

United Airlines

Sat 2/285:05 pm

NRT

DEC

1 stop15h 49m

United Airlines

Deal found 1/29

$1,077

Sun 2/227:15 pm

DEC

NRT

2 stops30h 15m

Multiple Airlines

Sat 2/286:45 pm

NRT

DEC

2 stops29h 07m

Multiple Airlines

Deal found 1/29

$1,273

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 January 29, 2026.

Wed 2/259:50 am

DEC

HND

1 stop16h 55m

United Airlines

Tue 3/1010:25 am

HND

DEC

1 stop21h 28m

United Airlines

Deal found 1/27

$982

Sun 2/227:15 pm

DEC

NRT

2 stops30h 15m

Multiple Airlines

Sat 2/286:45 pm

NRT

DEC

2 stops29h 07m

Multiple Airlines

Deal found 1/29

$1,273

Sun 2/229:50 am

DEC

HND

1 stop16h 55m

United Airlines

Sat 2/287:40 pm

HND

DEC

2 stops28h 12m

United Airlines

Deal found 1/27

$1,067

Sun 2/229:50 am

DEC

NRT

2 stops38h 40m

United Airlines

Sat 2/285:05 pm

NRT

DEC

1 stop15h 49m

United Airlines

Deal found 1/28

$1,077

Last-minute flights from Decatur to Japan
Discover last-minute flight deals from Decatur to Japan. Data last updated January 29, 2026 and is based on user searches.

Wed 1/287:09 pm

DEC

HND

2 stops30h 21m

United Airlines

Sun 2/16:20 pm

HND

DEC

1 stop14h 41m

United Airlines

Deal found 1/26

$1,025

Wed 1/289:49 am

DEC

NRT

2 stops38h 11m

United Airlines

Sun 2/15:05 pm

NRT

DEC

1 stop15h 56m

United Airlines

Deal found 1/26

$1,026

Thu 1/299:49 am

DEC

NRT

2 stops38h 41m

United Airlines

Mon 2/25:35 pm

NRT

DEC

2 stops30h 30m

United Airlines

Deal found 1/28

$1,032

Sun 2/229:50 am

DEC

HND

1 stop16h 55m

United Airlines

Sat 2/287:40 pm

HND

DEC

2 stops28h 12m

United Airlines

Deal found 1/27

$1,067

Sun 2/229:50 am

DEC

NRT

2 stops38h 10m

United Airlines

Sat 2/285:05 pm

NRT

DEC

1 stop15h 49m

United Airlines

Deal found 1/29

$1,077

Sun 2/227:15 pm

DEC

NRT

2 stops30h 15m

Multiple Airlines

Sat 2/286:45 pm

NRT

DEC

2 stops29h 07m

Multiple Airlines

Deal found 1/29

$1,273

Wed 2/259:50 am

DEC

HND

1 stop16h 55m

United Airlines

Tue 3/1010:25 am

HND

DEC

1 stop21h 28m

United Airlines

Deal found 1/27

$982

Find flight deals from Decatur to Japan

Round-trip from	$982 (United Airlines)

From Decatur Arpt to Japan

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DecaturTokyo

DEC - HND

DECHND

Decatur Arpt

Wed 2/25

9:50 am-5:45 pm

1 stop16h 55m

Tokyo Haneda

Tue 3/10

10:25 am-5:53 pm

1 stop21h 28m

$982

DecaturTokyo

DEC - HND

DECHND

Decatur Arpt

Sun 2/22

9:50 am-5:45 pm

1 stop16h 55m

Tokyo Haneda

Sat 2/28

7:40 pm-8:52 am

2 stops28h 12m

$1,067

DecaturTokyo

DEC - NRT

DECNRT

Decatur Arpt

Sun 2/22

9:50 am-3:30 pm

2 stops38h 40m

Tokyo Narita

Sat 2/28

5:05 pm-5:54 pm

1 stop15h 49m

$1,077

DecaturTokyo

DEC - NRT

DECNRT

Decatur Arpt

Sun 2/22

7:15 pm-4:30 pm

2 stops30h 15m

Tokyo Narita

Sat 2/28

6:45 pm-8:52 am

2 stops29h 07m

$1,273

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 16h 55m. Your travel time can differ by up to . Airlines will cover a distance of 6374 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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$982+ 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 2/25. 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

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 January 29, 2026.

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 January 29, 2026.

Find flight deals from Decatur to Japan

Keep the following information in mind while searching for Decatur to Japan flight deals. Data was last updated January 29, 2026.

Round-trip from

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?

Browse thousands of different options on Cheapflights for your next trip

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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 January 29, 2026.