Cheap Flights to Jefferson County from ₩827,100

View ₩827,100 flight on Tue, May 5, 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • United

  • Delta

  • American Airlines

  • Hawaiian Airlines

  • KLM

  • Aeromexico

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How much is the cheapest flight to Jefferson County?

Prices were available within the past 7 days and start at ₩827,100 for one-way flights and ₩1,436,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Thu, Feb 12 - Sat, Feb 21
ICN
Seoul
IDA
Idaho Falls
₩1,436,600 Roundtrip, found 19 hours ago
₩1,436,600
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 12 from Seoul to Idaho Falls, returning Sat, Feb 21, priced at ₩1,436,600 found 19 hours ago
Hawaiian Airlines
Thu, Feb 12 - Sat, Feb 21
ICN
Seoul
IDA
Idaho Falls
₩1,525,900 Roundtrip, found 19 hours ago
₩1,525,900
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 12 from Seoul to Idaho Falls, returning Sat, Feb 21, priced at ₩1,525,900 found 19 hours ago
Air Canada
Tue, May 5 - Sun, May 10
ICN
Seoul
IDA
Idaho Falls
₩1,701,400 Roundtrip, found 1 day ago
₩1,701,400
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Sun, May 10, priced at ₩1,701,400 found 1 day ago
Air Canada
Tue, May 5 - Sun, May 10
ICN
Seoul
IDA
Idaho Falls
₩1,779,400 Roundtrip, found 1 day ago
₩1,779,400
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Sun, May 10, priced at ₩1,779,400 found 1 day ago
Hawaiian Airlines
Thu, Feb 12 - Sat, Feb 21
ICN
Seoul
IDA
Idaho Falls
₩1,782,100 Roundtrip, found 19 hours ago
₩1,782,100
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 12 from Seoul to Idaho Falls, returning Sat, Feb 21, priced at ₩1,782,100 found 19 hours ago
Air Canada
Tue, May 5 - Sun, May 10
ICN
Seoul
IDA
Idaho Falls
₩1,787,700 Roundtrip, found 1 day ago
₩1,787,700
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Sun, May 10, priced at ₩1,787,700 found 1 day ago
United
Tue, May 5 - Wed, May 6
ICN
Seoul
IDA
Idaho Falls
₩1,831,500 Roundtrip, found 1 day ago
₩1,831,500
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Wed, May 6, priced at ₩1,831,500 found 1 day ago
Air Canada
Tue, May 5 - Sun, May 10
ICN
Seoul
IDA
Idaho Falls
₩1,905,100 Roundtrip, found 1 day ago
₩1,905,100
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Sun, May 10, priced at ₩1,905,100 found 1 day ago
Delta
Tue, May 5 - Sun, May 10
ICN
Seoul
IDA
Idaho Falls
₩1,954,100 Roundtrip, found 1 day ago
₩1,954,100
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Sun, May 10, priced at ₩1,954,100 found 1 day ago
Korean Air
Tue, May 5 - Sun, May 10
ICN
Seoul
IDA
Idaho Falls
₩1,954,100 Roundtrip, found 1 day ago
₩1,954,100
Roundtrip
found 1 day ago
Select Korean Air flight, departing Tue, May 5 from Seoul to Idaho Falls, returning Sun, May 10, priced at ₩1,954,100 found 1 day ago

About Jefferson County

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

Frequently asked questions

How do I find cheap flights to Jefferson County that have flexible change policies?
When it comes to flying these days, flexibility is a must. That's why we've added a "No change fee" filter to help you track down flexible, low-priced flights to Jefferson County. It's to the left of your screen directly under the "Flexible change policies" subheading.
Which airlines fly to Jefferson County?
Find a seat with one of these airlines and the lively region of Jefferson County will be yours to explore:

  • United Airlines - 91 flights to or near Jefferson County each month, including 91 flights to Idaho Falls Regional Airport (IDA) per month.
  • Delta Air Lines - 86 flights to or near Jefferson County each month, including 86 flights to Idaho Falls Regional Airport (IDA) per month.
  • Allegiant Air - 65 flights to or near Jefferson County each month, including 65 flights to Idaho Falls Regional Airport (IDA) per month.

How can I find cheap tickets to Jefferson County?
In the last seven days, ₩1,436,600 was the lowest price for a flight to Jefferson County. For an even cheaper fare, book ahead of time and be flexible with your travel dates. Search for your trip to Jefferson County, then check out prices for nearby days by clicking on our "flexible dates" link.
How much is a flight to Jefferson County?
One-way flights departing from Seoul (ICN) sold for as little as ₩827,100 in the last seven days. During this period, the price of a round-trip fare to Jefferson County varied between ₩1,436,600 and ₩1,954,100. If you find a fantastic deal, book as fast as you can — these fares don't stick around for long.
What are the most popular airports to fly into in Jefferson County?
Idaho Falls Regional Airport (IDA) is the primary gateway for people traveling into and out of Jefferson County. Roughly 334 flights per month touch down at this airport.
When is the cheapest time to fly to Jefferson County?
Take off to Jefferson County early on in the week and you'll usually be rewarded with cheaper fares. Tuesday is known for being the cheapest day to hop on a plane, closely followed by Monday. If you're hoping to avoid the costliest flights, stay away from Saturdays.
How much is a plane ticket to Jefferson County?
In the last seven days, plane fares to Jefferson County ranged from ₩1,436,600 to ₩1,954,100.
What is the best time to go to Jefferson County?
Rigby, Jefferson County's leading city, is a great place to tour around at anytime. Don't like the cold? Then journey here from June 20 onward in summer, when temperatures range from 50ºF to 80ºF. June, July and August is when Rigby draws the biggest crowds.
What months are the cheapest to book a flight to Jefferson County?
The ideal month to book a fantastic deal to Jefferson County is February, whereas prices are at a premium in December. Keep clear of this month if you're counting your pennies.

Trending flights to Jefferson County

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.

Hawaiian Airlines
Thu, Feb 12 - Sat, Feb 21
ICN
Seoul
IDA
Idaho Falls
₩1,436,600 Roundtrip, found 19 hours ago
₩1,436,600
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 12 from Seoul to Idaho Falls, returning Sat, Feb 21, priced at ₩1,436,600 found 19 hours ago
*Available to Expedia members.