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$421+ Cheap flights from Idaho to Japan

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FUK
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Idaho to Japan

Cheapest flights from Idaho to Japan
Explore the most affordable flight options available from Idaho to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:20 am
GEG
-
HND
1 stop16h 00m
Delta
Wed 9/94:05 pm
HND
-
GEG
1 stop14h 41m
Delta
Deal found 3/21$786
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:20 am
GEG
-
HND
1 stop17h 00m
Delta
Wed 9/164:05 pm
HND
-
GEG
1 stop17h 03m
Delta
Deal found 3/22$787
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:00 am
GEG
-
NRT
2 stops17h 50m
Multiple Airlines
Wed 5/209:30 pm
NRT
-
GEG
1 stop33h 10m
Multiple Airlines
Deal found 3/20$800
This Delta deal was found by Cheapflights users on 3/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:15 am
GEG
-
HND
1 stop15h 00m
Delta
Mon 5/114:05 pm
HND
-
GEG
1 stop15h 26m
Delta
Deal found 3/19$801
This Korean Air deal was found by Cheapflights users on 3/21. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:50 am
GEG
-
HND
2 stops20h 00m
Korean Air
Tue 9/82:00 am
HND
-
GEG
2 stops28h 46m
Korean Air
Deal found 3/21$805
This Korean Air deal was found by Cheapflights users on 3/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:30 am
GEG
-
NRT
2 stops19h 35m
Korean Air
Mon 5/115:20 pm
NRT
-
GEG
2 stops38h 11m
Korean Air
Deal found 3/19$805
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:10 am
GEG
-
HND
1 stop13h 10m
Delta
Tue 9/154:35 pm
HND
-
GEG
1 stop20h 56m
Delta
Deal found 3/20$811
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:14 pm
BOI
-
NRT
1 stop27h 56m
Multiple Airlines
Tue 5/129:30 pm
NRT
-
BOI
1 stop15h 57m
Multiple Airlines
Deal found 3/19$814
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:20 am
GEG
-
HND
1 stop17h 00m
Delta
Tue 9/294:20 pm
HND
-
GEG
1 stop22h 28m
Delta
Deal found 3/20$815
This Korean Air deal was found by Cheapflights users on 3/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:30 am
GEG
-
HND
2 stops21h 20m
Korean Air
Sun 5/102:00 am
HND
-
GEG
2 stops29h 33m
Korean Air
Deal found 3/19$820
This Korean Air deal was found by Cheapflights users on 3/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:30 am
GEG
-
NRT
2 stops19h 35m
Korean Air
Mon 5/119:20 am
NRT
-
GEG
2 stops22h 11m
Korean Air
Deal found 3/19$820
This Korean Air deal was found by Cheapflights users on 3/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:55 am
GEG
-
OKA
2 stops40h 10m
Korean Air
Thu 11/126:05 pm
OKA
-
GEG
2 stops35h 57m
Korean Air
Deal found 3/19$822

Find flight deals from Idaho to Japan

Keep the following information in mind while searching for Idaho to Japan flight deals. Data was last updated March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$786
(Delta)

One-way from

$421
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$885
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Tokyo (TYO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Tokyo (TYO) flights.
Search Deals
From Idaho to Japan
Search Deals
One-way flight from Idaho to Japan
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Japan 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 March 23, 2026.
Use the filters below to find and compare flights from Idaho to Japan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneTokyo

GEG - HND

GEGHND

Spokane

Wed 8/26

6:20 am-2:20 pm

1 stop16h 00m

Tokyo Haneda

Wed 9/9

4:05 pm-2:46 pm

1 stop14h 41m

$786

SpokaneTokyo

GEG - HND

GEGHND

Spokane

Wed 9/9

5:20 am-2:20 pm

1 stop17h 00m

Tokyo Haneda

Wed 9/16

4:05 pm-5:08 pm

1 stop17h 03m

$787

SpokaneTokyo

GEG - HND

GEGHND

Spokane

Tue 4/28

7:15 am-2:15 pm

1 stop15h 00m

Tokyo Haneda

Mon 5/11

4:05 pm-3:31 pm

1 stop15h 26m

$801

SpokaneTokyo

GEG - NRT

GEGNRT

Spokane

Wed 8/26

10:50 am-9:05 pm

2 stops18h 15m

Tokyo Narita

Wed 9/9

9:20 am-2:46 pm

2 stops21h 26m

$805

SpokaneTokyo

GEG - HND

GEGHND

Spokane

Sun 9/6

6:30 am-10:50 pm

2 stops24h 20m

Tokyo Haneda

Tue 9/8

2:00 am-2:46 pm

2 stops28h 46m

$834

SpokaneTokyo

GEG - NRT

GEGNRT

Spokane

Sun 9/6

6:30 am-3:35 pm

2 stops41h 05m

Tokyo Narita

Wed 9/9

8:55 pm-2:46 pm

2 stops33h 51m

$834

SpokaneTokyo

GEG - NRT

GEGNRT

Spokane

Tue 9/8

5:00 am-2:45 pm

1 stop17h 45m

Tokyo Narita

Tue 9/15

5:05 pm-10:22 pm

1 stop21h 17m

$836

SpokaneTokyo

GEG - HND

GEGHND

Spokane

Tue 4/14

7:00 am-9:00 pm

2 stops22h 00m

Tokyo Haneda

Tue 5/12

6:10 pm-9:16 pm

2 stops19h 06m

$840

SpokaneTokyo

GEG - HND

GEGHND

Spokane

Wed 9/9

5:00 am-7:00 pm

2 stops22h 00m

Tokyo Haneda

Wed 9/16

9:15 pm-10:35 am

2 stops29h 20m

$840

SpokaneTokyo

GEG - NRT

GEGNRT

Spokane

Tue 4/28

7:00 am-3:25 pm

1 stop16h 25m

Tokyo Narita

Mon 5/11

5:05 pm-9:40 pm

1 stop20h 35m

$851

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Idaho to Japan

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

What is the cheapest month to book a flight from Idaho to Japan?

Currently, November is the cheapest month in which you can book a flight from Idaho to Japan (average of $622). Flying from Idaho to Japan in December is currently the most expensive (average of $787). 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 Idaho to Japan. 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 Idaho to Japan?

    A quick flight from Idaho to Japan can take about 16h. Delta provides one of the quickest options available for as low as $786. There are 4971 mi between Idaho and Japan. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Idaho to Japan?

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

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

    Yes. Cheapflights offers flight deals from Idaho 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.

  • What is the cheapest month to book a flight from Idaho to Japan?

    Currently, November is the cheapest month in which you can book a flight from Idaho to Japan (average of $622). Flying from Idaho to Japan in December is currently the most expensive (average of $787). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Idaho to Japan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Idaho to Japan

Discover the top 5 airlines that operate flights from Idaho to Japan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$597Average$939FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$666Average$852FlexibilityNo cancel feeOn-time81%
DeltaCheapest$697Average$849FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$708Average$812FlexibilityNo cancel feeOn-time75%
ANACheapest$723Average$753FlexibilityNo cancel feeOn-time80%

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