In terms of precipitation, rainfall in Decatur, Illinois ranges from 1.7 - 4.4 inches per month. June is typically the wettest month, when rainfall can reach 4.4 in. January is typically the driest time to visit Decatur, Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Decatur, Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

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

When flying from Japan to Decatur, Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Decatur Arpt (DEC) is the airport you will fly into if you book a flight from Japan to Decatur. It is only a 4.7 mi journey from Decatur Arpt (DEC) to Decatur’s city center.

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

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

How can I find direct flights from Japan to Decatur?

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

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

Yes. Cheapflights offers flight deals from Japan 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.

$1,710+ Flights from Japan to Decatur, IL

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Cheap flight deals from Japan to Decatur

Round-trip from	$1,710 (United Airlines)

From Japan to Decatur Arpt

Search Deals

Find flight deals from Japan to Decatur

Cheapest flights from Japan to Decatur
Explore the most affordable flight options available from Japan to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Sat 10/113:50 pmHND - DEC

2 stops31h 01mUnited Airlines

Tue 10/149:30 amDEC - HND

2 stops63h 45mUnited Airlines

Deal found 7/28

$1,710

Best flights from Japan to Decatur
Discover carefully curated flight deals from Japan to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Sat 10/113:50 pmHND - DEC

2 stops31h 01mUnited Airlines

Tue 10/149:30 amDEC - HND

2 stops63h 45mUnited Airlines

Deal found 7/28

$1,710

Fly from

Fly to

Route

Depart

Return

Price

TokyoDecatur

HND - DEC

HNDDEC

Tokyo Haneda

Sat 10/11

3:50 pm-8:51 am

2 stops31h 01m

Decatur Arpt

Tue 10/14

9:30 am-3:15 pm

2 stops63h 45m

$1,710

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Japan to Decatur

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

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

Reviews of airlines servicing Decatur

Get a feel of what it's like to fly with United Airlines from Japan 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

8,899 reviews

Reviews

1 / 20

10.0

Excellent

Momny,Jun 2025

HND - BKK

I very love and happy with ANA and Sevice very super good .Thank you ANA

United Airlines

7.4

Good

8,899 reviews

United Airlines

7.4

Good

8,899 reviews

Reviews

1 / 20

10.0

Excellent

Momny,Jun 2025

HND - BKK

I very love and happy with ANA and Sevice very super good .Thank you ANA

Related info for your journey

What airport do you fly into for flights to Decatur from Japan?
Decatur Arpt (DEC) is the airport you will fly into if you book a flight from Japan to Decatur. It is only a 4.7 mi journey from Decatur Arpt (DEC) to Decatur’s city center.
Can I find deals for flights from Japan to Decatur that include hotel bookings?
Yes. In addition to deals on Japan to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Japan to Decatur?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Japan to Decatur.
Can I find deals for business class flights from Japan to Decatur?
Yes. Cheapflights offers flight deals from Japan 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.

See more FAQs

Mattoon

Effingham

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$1,710+ Cheap flights from Japan to Decatur, IL (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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Japan to Decatur with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Japan to Decatur

Keep the following information in mind while searching for Japan to Decatur flight deals. Data was last updated July 29, 2025.

Round-trip from

Find flight deals from Japan to Decatur

Cheapest flights from Japan to DecaturExplore the most affordable flight options available from Japan to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Japan to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Japan to Decatur

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

Cheapflights Insights

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

Reviews of airlines servicing Decatur

Get a feel of what it's like to fly with United Airlines from Japan 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.

Related info for your journey

Find useful and relevant information for your journey from Japan to Decatur. 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 into for flights to Decatur from Japan?

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

How can I find direct flights from Japan to Decatur?

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

Traveling to a place near Decatur?

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 Japan to Decatur

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

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Travel Smart

Cheapest flights from Japan to Decatur
Explore the most affordable flight options available from Japan to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.