Cheap Flights to Southern Idaho from HK$1,238

View HK$1,238 flight on Wed, 31 Dec 2025Opens in a new window

Popular airlines

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

  • American Airlines

    American Airlines

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • Air France

    Air France

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Southern Idaho

Prices were available within the past 7 days and start at HK$1,238 for one-way flights and HK$3,456 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 20 Dec - Wed, 31 Dec
SEA
Seattle
BOI
Boise
HK$3,456 Return, found 5 days ago
HK$3,456
Return
found 5 days ago
Select United flight, departing Sat, 20 Dec from Seattle to Boise, returning Wed, 31 Dec, priced at HK$3,456 found 5 days ago
Delta
Sat, 20 Dec - Wed, 31 Dec
SEA
Seattle
BOI
Boise
HK$4,186 Return, found 5 days ago
HK$4,186
Return
found 5 days ago
Select Delta flight, departing Sat, 20 Dec from Seattle to Boise, returning Wed, 31 Dec, priced at HK$4,186 found 5 days ago
American Airlines
Thu, 18 Dec - Sat, 8 Aug
SEA
Seattle
IDA
Idaho Falls
HK$6,177 Return, found 23 hours ago
HK$6,177
Return
found 23 hours ago
Select American Airlines flight, departing Thu, 18 Dec from Seattle to Idaho Falls, returning Sat, 8 Aug, priced at HK$6,177 found 23 hours ago
EVA Airways
Thu, 16 Apr - Sun, 26 Apr
HKG
Hong Kong SAR
BOI
Boise
HK$6,457 Return, found 2 hours ago
HK$6,457
Return
found 2 hours ago
Select EVA Airways flight, departing Thu, 16 Apr from Hong Kong SAR to Boise, returning Sun, 26 Apr, priced at HK$6,457 found 2 hours ago
STARLUX Airlines
Tue, 20 Jan - Sat, 31 Jan
HKG
Hong Kong SAR
BOI
Boise
HK$7,087 Return, found 1 day ago
HK$7,087
Return
found 1 day ago
Select STARLUX Airlines flight, departing Tue, 20 Jan from Hong Kong SAR to Boise, returning Sat, 31 Jan, priced at HK$7,087 found 1 day ago

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 HK$3,456. 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 HK$3,456 and reached a maximum of HK$7,087. For one-way trips taking off from Seattle (SEA), the lowest amount paid during this same period was HK$1,238.
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 HK$3,456 and HK$7,087. 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
Boise
Destination airport IATA code
BOI
Destination city name
Boise
Return price
HK$1,424

Trending flights to Southern Idaho

Prices were available within the past 7 days and start at HK$1,238 for one-way flights and HK$3,456 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

EVA Airways
Thu, 16 Apr - Sun, 26 Apr
HKG
Hong Kong SAR
BOI
Boise
HK$6,457 Return, found 2 hours ago
HK$6,457
Return
found 2 hours ago
Select EVA Airways flight, departing Thu, 16 Apr from Hong Kong SAR to Boise, returning Sun, 26 Apr, priced at HK$6,457 found 2 hours ago
*Available to Expedia members.