Cheap flights from Houston to Southern Idaho

View AU$193 flight on Sat, 13 Sep. 2025Opens in a new window

Popular airlines from Houston to Southern Idaho

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Alaska Airlines

    Alaska Airlines

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Houston (HOU) to Southern Idaho (IDA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 6 Sep. - Sat, 13 Sep.
IAH
Houston
BOI
Boise
AU$375 Return, found 1 day ago
AU$375
Return
found 1 day ago
Select American Airlines flight, departing Sat, 6 Sep. from Houston to Boise, returning Sat, 13 Sep., priced at AU$375 found 1 day ago
Alaska Airlines
Sat, 6 Sep. - Sat, 13 Sep.
IAH
Houston
BOI
Boise
AU$397 Return, found 1 day ago
AU$397
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 6 Sep. from Houston to Boise, returning Sat, 13 Sep., priced at AU$397 found 1 day ago
Delta
Sat, 6 Sep. - Sat, 13 Sep.
IAH
Houston
BOI
Boise
AU$397 Return, found 1 day ago
AU$397
Return
found 1 day ago
Select Delta flight, departing Sat, 6 Sep. from Houston to Boise, returning Sat, 13 Sep., priced at AU$397 found 1 day ago
American Airlines
Sat, 6 Sep. - Sat, 13 Sep.
HOU
Houston
BOI
Boise
AU$397 Return, found 1 day ago
AU$397
Return
found 1 day ago
Select American Airlines flight, departing Sat, 6 Sep. from Houston to Boise, returning Sat, 13 Sep., priced at AU$397 found 1 day ago
Alaska Airlines
Sat, 6 Sep. - Sat, 13 Sep.
IAH
Houston
BOI
Boise
AU$398 Return, found 1 day ago
AU$398
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 6 Sep. from Houston to Boise, returning Sat, 13 Sep., priced at AU$398 found 1 day ago
United
Sat, 6 Sep. - Sat, 13 Sep.
IAH
Houston
BOI
Boise
AU$466 Return, found 1 day ago
AU$466
Return
found 1 day ago
Select United flight, departing Sat, 6 Sep. from Houston to Boise, returning Sat, 13 Sep., priced at AU$466 found 1 day ago

Find the cheapest month to fly from Houston (HOU) to Boise (BOI)

August is typically the cheapest month to fly

From AU$213 - AU$579 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.