$379+ Cheap flights from Idaho to Incheon Intl (ICN)
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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ICN
Jan 17 — Jan 241
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho to Incheon Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to Incheon Intl
Cheapest flights from Idaho to Incheon IntlExplore the most affordable flight options available from Idaho to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
Explore the most affordable flight options available from Idaho to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/226:55 pmBOI - ICN
1 stop29h 20mUnited Airlines
Mon 1/1212:45 pmICN - BOI
2 stops23h 00mUnited Airlines
Deal found 12/17![United Airlines logo]()
$1,335
This Delta deal was found by Cheapflights users on 12/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:23 pmGEG - ICN
1 stop28h 07mDelta
Thu 1/88:05 pmICN - GEG
1 stop17h 53mDelta
Deal found 12/15![Delta logo]()
$1,540
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/281:47 pmGEG - ICN
2 stops33h 28mUnited Airlines
Thu 1/812:45 pmICN - GEG
2 stops25h 37mUnited Airlines
Deal found 12/17![United Airlines logo]()
$1,616
This Delta deal was found by Cheapflights users on 12/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:19 pmBOI - ICN
2 stops31h 16mDelta
Mon 1/128:05 pmICN - BOI
1 stop17h 53mDelta
Deal found 12/15![Delta logo]()
$1,638
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/165:25 pmBOI - ICN
2 stops30h 50mUnited Airlines
Mon 12/2912:45 pmICN - BOI
2 stops25h 45mUnited Airlines
Deal found 12/16![United Airlines logo]()
$1,685
This Korean Air deal was found by Cheapflights users on 12/16. 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 12/168:26 pmBOI - ICN
1 stop28h 04mMultiple Airlines
Mon 12/298:05 pmICN - BOI
1 stop13h 22mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$1,743
This Korean Air deal was found by Cheapflights users on 12/16. 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.
Sat 12/205:50 amBOI - ICN
1 stop18h 30mMultiple Airlines
Mon 12/227:40 pmICN - BOI
1 stop17h 45mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$2,075
Find flight deals from Idaho to Incheon Intl
Keep the following information in mind while searching for Idaho to Incheon Intl flight deals. Data was last updated December 18, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $716 (Expedia) |
One-way from | $379 (Alaska Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Incheon Intl 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 December 18, 2025.
Use the filters below to find and compare flights from Idaho to Incheon Intl Airport that are best for you.
Fly from
Idaho
Fly to
Incheon Intl
Route
Depart
Return
Price
Idaho FallsIncheon
IDA - ICN
IDAICN
Idaho Falls Fanning Field
Sat 1/31
9:00 am-6:35 pm
1 stop17h 35m
Incheon Intl
Sat 2/7
8:35 pm-6:18 pm
1 stop13h 43m
$716
Idaho FallsIncheon
IDA - ICN
IDAICN
Idaho Falls Fanning Field
Wed 3/25
4:00 pm-6:35 pm
1 stop35h 35m
Incheon Intl
Wed 4/1
8:35 pm-10:35 pm
1 stop17h 00m
$721
BoiseIncheon
BOI - ICN
BOIICN
Boise Air Term. Gowen Fld
Sat 1/24
2:20 pm-5:40 am
1 stop23h 20m
Incheon Intl
Wed 1/28
12:45 pm-4:10 pm
1 stop19h 25m
$816
Idaho FallsIncheon
IDA - ICN
IDAICN
Idaho Falls Fanning Field
Sat 1/31
5:25 am-4:20 pm
1 stop18h 55m
Incheon Intl
Sat 2/7
7:30 pm-10:57 pm
2 stops19h 27m
$820
SpokaneIncheon
GEG - ICN
GEGICN
Spokane
Mon 2/2
6:05 am-4:30 pm
1 stop17h 25m
Incheon Intl
Fri 2/20
8:05 pm-10:50 pm
1 stop19h 45m
$827
SpokaneIncheon
GEG - ICN
GEGICN
Spokane
Fri 2/13
5:00 am-4:30 pm
1 stop18h 30m
Incheon Intl
Sun 2/22
8:05 pm-12:04 am
1 stop20h 59m
$827
SpokaneIncheon
GEG - ICN
GEGICN
Spokane
Thu 1/29
10:05 am-6:35 pm
1 stop15h 30m
Incheon Intl
Thu 2/5
8:35 pm-9:25 pm
1 stop17h 50m
$827
SpokaneIncheon
GEG - ICN
GEGICN
Spokane
Thu 2/5
9:20 am-4:30 pm
1 stop14h 10m
Incheon Intl
Sat 2/14
8:05 pm-8:56 pm
1 stop17h 51m
$827
SpokaneIncheon
GEG - ICN
GEGICN
Spokane
Fri 2/6
6:05 am-4:30 pm
1 stop17h 25m
Incheon Intl
Sun 2/15
8:05 pm-12:04 am
1 stop20h 59m
$827
SpokaneIncheon
GEG - ICN
GEGICN
Spokane
Fri 2/6
9:20 am-4:30 pm
1 stop14h 10m
Incheon Intl
Fri 2/20
8:05 pm-12:04 am
1 stop20h 59m
$827
Showing 1-10 of 29 results
Best time to book a flight from Idaho to Incheon Intl
Have a flexible travel schedule? Discover the best time to fly to Incheon Intl 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 Incheon Intl Airport
What is the cheapest time of day to fly from ID to ICN?
Find hourly flight availability from Idaho to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.
A simple way to save on the total cost of your ticket is to fly from Idaho to Incheon Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight in the morning.
Related info for your journey
Find useful and relevant information for your journey from Idaho to Incheon Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Incheon Intl Airport?
Book flights to Incheon Intl Airport if you plan to visit one of these locationsSuwon
Seongnam
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 Idaho to Incheon Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Idaho to Incheon Intl
Discover the top airline that operate flights from Idaho to Incheon Intl. 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 December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$915 | Average$1,455 | FlexibilityNo cancel fee | On-timeN/A |