Cheap Flights to Southern Idaho

View ₩297,400 flight on Tue, Jan 20, 2026Opens in a new window

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How much is the cheapest flight to Southern Idaho?

Prices were available within the past 7 days and start at ₩297,400 for one-way flights and ₩508,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Jan 20 - Wed, Jan 28
SJO
San José
BOI
Boise
₩508,100 Roundtrip, found 3 days ago
₩508,100
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jan 20 from San José to Boise, returning Wed, Jan 28, priced at ₩508,100 found 3 days ago
United
Mon, Jan 26 - Mon, Jul 27
SJO
San José
BOI
Boise
₩587,800 Roundtrip, found 5 hours ago
₩587,800
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Jan 26 from San José to Boise, returning Mon, Jul 27, priced at ₩587,800 found 5 hours ago
Delta
Thu, Jan 29 - Tue, Feb 17
ICN
Seoul
BOI
Boise
₩967,600 Roundtrip, found 12 hours ago
₩967,600
Roundtrip
found 12 hours ago
Select Delta flight, departing Thu, Jan 29 from Seoul to Boise, returning Tue, Feb 17, priced at ₩967,600 found 12 hours ago
Alaska Airlines
Sat, Jan 31 - Wed, Feb 18
ICN
Seoul
BOI
Boise
₩979,800 Roundtrip, found 12 hours ago
₩979,800
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Seoul to Boise, returning Wed, Feb 18, priced at ₩979,800 found 12 hours ago
Hawaiian Airlines
Fri, Jan 30 - Fri, Feb 6
ICN
Seoul
BOI
Boise
₩979,800 Roundtrip, found 12 hours ago
₩979,800
Roundtrip
found 12 hours ago
Select Hawaiian Airlines flight, departing Fri, Jan 30 from Seoul to Boise, returning Fri, Feb 6, priced at ₩979,800 found 12 hours ago

Searching for cheap flights to Southern Idaho? No travel company presents more choices than Expedia if you're looking to compare flights to Southern Idaho. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Idaho. Expedia provides the cheapest flights to many destinations in Idaho and you may find even greater savings if you combine your flight with a hotel stay in Southern Idaho.

Frequently asked questions

How do I find cheap flights to Southern Idaho that have flexible change policies?
It's as easy as can be with Expedia. Step 1: Type in your travel details and press "Search." Step 2: Check the "No change fee" box below the "Flexible change policies" subheading to the left of your screen. Step 3. Snag your cheap and flexible flight to Southern Idaho.
Which airlines fly to Southern Idaho?
You can take your pick of a good range of airlines that fly into or near Southern Idaho. A few of your best options are:

  • Alaska Airlines - 754 flights to or near Southern Idaho each month, including 754 flights to Boise Airport (BOI) per month.
  • Delta Air Lines - 489 flights to or near Southern Idaho each month, including 489 flights to Boise Airport (BOI) per month.
  • United Airlines - 303 flights to or near Southern Idaho each month, including 303 flights to Boise Airport (BOI) per month.

How can I find cheap tickets to Southern Idaho?
One of the best ways to nab cheap tickets to Southern Idaho is to be flexible with your dates. Search for your flights, then click "flexible dates" at the top of your results. It will reveal the cheapest prices for nearby days. The best price for a flight to Southern Idaho in the last seven days was ₩508,100. Booking well in advance will generally help you get an even better deal.
How much is a flight to Southern Idaho?
In the last seven days, return airfares to Southern Idaho sold from just ₩508,100 and reached a maximum of ₩979,800. For one-way trips taking off from San José (SJO), the lowest amount paid during this same period was ₩297,400.
What are the most popular airports to fly into in Southern Idaho?
Boise Airport (BOI) is the main jumping-off point for those traveling to Southern Idaho. Approximately 1,994 monthly flights touch down at this airport.
When is the cheapest time to fly to Southern Idaho?
Departing on a Tuesday, followed by a Monday, is generally the best way to pick up the cheapest deal. Stay away from the weekends if possible, because Saturday is typically the costliest day. Spend the money you saved enjoying yourself in Southern Idaho instead!
How much is a plane ticket to Southern Idaho?
In the last seven days, plane fares varied between ₩508,100 and ₩979,800. Take a look at our fabulous deals to Southern Idaho, make a booking and then start packing your suitcase.
What months are the cheapest to book a flight to Southern Idaho?
The ideal month to book affordable flights to Southern Idaho is February. Keep in mind that in the United States, an expensive time to purchase a ticket is the month of December.
Flights to Southern Idaho information
Destination airport
Twin Falls
Destination airport IATA code
TWF
Destination city name
Twin Falls
Roundtrip price
₩2,298,500

Trending flights to Southern Idaho

Prices were available within the past 7 days and start at ₩297,400 for one-way flights and ₩508,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Jan 29 - Tue, Feb 17
ICN
Seoul
BOI
Boise
₩967,600 Roundtrip, found 12 hours ago
₩967,600
Roundtrip
found 12 hours ago
Select Delta flight, departing Thu, Jan 29 from Seoul to Boise, returning Tue, Feb 17, priced at ₩967,600 found 12 hours ago
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