Cheap Flights to Idaho from ₩1,140,100

View ₩1,140,100 flight on Wed, Nov 25, 2026Opens in a new window

Popular airlines to Idaho

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • Frontier Airlines

  • Air Canada

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Idaho?

Prices were available within the past 7 days and start at ₩1,140,100 for one-way flights and ₩1,616,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jun 30 - Tue, Aug 4
ICN
Seoul
GEG
Spokane
₩1,616,600 Roundtrip, found 1 day ago
₩1,616,600
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jun 30 from Seoul to Spokane, returning Tue, Aug 4, priced at ₩1,616,600 found 1 day ago
Delta
Tue, Jun 30 - Sat, Jul 4
ICN
Seoul
GEG
Spokane
₩1,691,600 Roundtrip, found 1 day ago
₩1,691,600
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jun 30 from Seoul to Spokane, returning Sat, Jul 4, priced at ₩1,691,600 found 1 day ago
Korean Air
Tue, Jun 30 - Tue, Aug 4
ICN
Seoul
GEG
Spokane
₩1,716,600 Roundtrip, found 1 day ago
₩1,716,600
Roundtrip
found 1 day ago
Select Korean Air flight, departing Tue, Jun 30 from Seoul to Spokane, returning Tue, Aug 4, priced at ₩1,716,600 found 1 day ago
Philippine Airlines
Wed, Nov 25 - Mon, Nov 30
ICN
Seoul
PUW
Pullman
₩1,743,300 Roundtrip, found 3 days ago
₩1,743,300
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Wed, Nov 25 from Seoul to Pullman, returning Mon, Nov 30, priced at ₩1,743,300 found 3 days ago
Alaska Airlines
Mon, Jul 13 - Mon, Jul 27
ICN
Seoul
GEG
Spokane
₩1,756,300 Roundtrip, found 2 days ago
₩1,756,300
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Jul 13 from Seoul to Spokane, returning Mon, Jul 27, priced at ₩1,756,300 found 2 days ago
Delta
Fri, Jun 26 - Tue, Jun 30
ICN
Seoul
BOI
Boise
₩1,763,100 Roundtrip, found 1 day ago
₩1,763,100
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Jun 26 from Seoul to Boise, returning Tue, Jun 30, priced at ₩1,763,100 found 1 day ago
United
Tue, Sep 22 - Mon, Sep 28
ICN
Seoul
GEG
Spokane
₩1,868,600 Roundtrip, found 13 hours ago
₩1,868,600
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Sep 22 from Seoul to Spokane, returning Mon, Sep 28, priced at ₩1,868,600 found 13 hours ago
Korean Air
Thu, Nov 19 - Sun, Nov 22
ICN
Seoul
GEG
Spokane
₩1,883,600 Roundtrip, found 1 day ago
₩1,883,600
Roundtrip
found 1 day ago
Select Korean Air flight, departing Thu, Nov 19 from Seoul to Spokane, returning Sun, Nov 22, priced at ₩1,883,600 found 1 day ago
American Airlines
Thu, Nov 19 - Sun, Nov 22
ICN
Seoul
GEG
Spokane
₩2,155,600 Roundtrip, found 1 day ago
₩2,155,600
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 19 from Seoul to Spokane, returning Sun, Nov 22, priced at ₩2,155,600 found 1 day ago
United
Thu, Jul 9 - Sat, Jul 18
ICN
Seoul
IDA
Idaho Falls
₩2,176,100 Roundtrip, found 3 days ago
₩2,176,100
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jul 9 from Seoul to Idaho Falls, returning Sat, Jul 18, priced at ₩2,176,100 found 3 days ago

Trending flights to Idaho

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jun 30 - Tue, Aug 4
ICN
Seoul
GEG
Spokane
₩1,616,600 Roundtrip, found 1 day ago
₩1,616,600
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jun 30 from Seoul to Spokane, returning Tue, Aug 4, priced at ₩1,616,600 found 1 day ago

Frequently asked questions

How do I find cheap flights to Idaho that have flexible change policies?
By using our smart "No change fee" filter, that's how. Simply type in your origin, destination and dates, click "Search," then tick the checkbox directly under the "Flexible change policies" heading (it's on the left of your screen). Expedia makes it simple to find flexible, low-cost fares to Idaho.
Which airlines fly to Idaho?
Wherever you want to wander in Idaho and whenever you're hoping to depart, you'll find your perfect flight with one of these top airlines:

  • Alaska Airlines - 815 flights to or near Idaho each month, including 754 flights to Boise Airport (BOI) and 30 flights to Friedman Memorial Airport (SUN) per month.
  • Delta Air Lines - 637 flights to or near Idaho each month, including 489 flights to Boise Airport (BOI) and 86 flights to Idaho Falls Regional Airport (IDA) per month.
  • United Airlines - 438 flights to or near Idaho each month, including 303 flights to Boise Airport (BOI) and 91 flights to Idaho Falls Regional Airport (IDA) per month.

How can I find cheap tickets to Idaho?
One of the best ways to find cheap tickets to Idaho is to be flexible with your travel dates. Search for your flights, then click "flexible dates" above the results. It'll bring up the cheapest prices for nearby days. The best price for a flight to Idaho in the last seven days was ₩1,616,600. Booking well ahead will generally help you get an even bigger bargain.
How much is a flight to Idaho?
One-way flights departing from Seoul (ICN) sold for as little as ₩1,140,100 in the last seven days. During this time, the price of a round-trip fare to Idaho varied between ₩1,616,600 and ₩2,176,100. If you find a deal, book quickly — these prices don't hang about.
What are the most popular airports to fly into in Idaho?
Touch down at any one of these main airports in Idaho and you'll be in the perfect position to experience all that this renowned region has to offer:

  • Boise Airport (BOI) - 1,994 flights per month.
  • Idaho Falls Regional Airport (IDA) - 334 flights per month.
  • Friedman Memorial Airport (SUN) - 134 flights per month.

When is the cheapest time to fly to Idaho?
Depart for Idaho earlier in the week and you'll usually be rewarded with lower fares. Tuesday is generally the cheapest day to jet off, followed closely by Monday. If you're eager to avoid the most expensive flights, keep clear of Saturdays.
How much is a plane ticket to Idaho?
In the last seven days, plane fares to Idaho fluctuated between ₩1,616,600 and ₩2,176,100. Prices tend to go up over time, so book a top deal today.
What is the best time to go to Idaho?
Summer starts June 20 in the Northern Hemisphere, and these warmer months are a terrific time to tour the thrilling Idaho city of Boise. Average temperatures vary between 60ºF and 80ºF throughout this season. The largest crowds are found here in May, July and August.
What months are the cheapest to book a flight to Idaho?
The most cost-effective month to land a flight to Idaho is February, while prices are at a premium in December. Steer clear of this month if you're on a budget.

Book with confidence

About Idaho

Expedia offers flights to Idaho to meet every traveler's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Idaho or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Idaho
*Available to Expedia members.