Cheap Flights to Idaho

View AU$727 flight on Mon, 1 June 2026Opens in a new window

Popular airlines to Idaho

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • Air Canada

  • Frontier Airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

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

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheapest Flights to Idaho

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
Thu, 19 Mar - Wed, 25 Mar
SYD
Sydney
IDA
Idaho Falls
AU$1,158 Return, found 1 day ago
AU$1,158
Return
found 1 day ago
Select American Airlines flight, departing Thu, 19 Mar from Sydney to Idaho Falls, returning Wed, 25 Mar, priced at AU$1,158 found 1 day ago
American Airlines
Tue, 9 June - Tue, 7 July
SYD
Sydney
GEG
Spokane
AU$1,300 Return, found 21 hours ago
AU$1,300
Return
found 21 hours ago
Select American Airlines flight, departing Tue, 9 June from Sydney to Spokane, returning Tue, 7 July, priced at AU$1,300 found 21 hours ago
Delta
Wed, 29 Apr - Wed, 6 May
SYD
Sydney
LWS
Lewiston
AU$1,313 Return, found 2 days ago
AU$1,313
Return
found 2 days ago
Select Delta flight, departing Wed, 29 Apr from Sydney to Lewiston, returning Wed, 6 May, priced at AU$1,313 found 2 days ago
United
Mon, 25 May - Thu, 25 June
SYD
Sydney
GEG
Spokane
AU$1,383 Return, found 2 days ago
AU$1,383
Return
found 2 days ago
Select United flight, departing Mon, 25 May from Sydney to Spokane, returning Thu, 25 June, priced at AU$1,383 found 2 days ago
American Airlines
Wed, 13 May - Tue, 9 June
BNE
Brisbane
GEG
Spokane
AU$1,458 Return, found 16 hours ago
AU$1,458
Return
found 16 hours ago
Select American Airlines flight, departing Wed, 13 May from Brisbane to Spokane, returning Tue, 9 June, priced at AU$1,458 found 16 hours ago
American Airlines
Tue, 28 Apr - Tue, 5 May
SYD
Sydney
BOI
Boise
AU$1,462 Return, found 3 days ago
AU$1,462
Return
found 3 days ago
Select American Airlines flight, departing Tue, 28 Apr from Sydney to Boise, returning Tue, 5 May, priced at AU$1,462 found 3 days ago
Air New Zealand
Tue, 28 Apr - Tue, 5 May
BNE
Brisbane
BOI
Boise
AU$1,485 Return, found 4 days ago
AU$1,485
Return
found 4 days ago
Select Air New Zealand flight, departing Tue, 28 Apr from Brisbane to Boise, returning Tue, 5 May, priced at AU$1,485 found 4 days ago
Air New Zealand
Tue, 28 Apr - Tue, 5 May
BNE
Brisbane
BOI
Boise
AU$1,485 Return, found 4 days ago
AU$1,485
Return
found 4 days ago
Select Air New Zealand flight, departing Tue, 28 Apr from Brisbane to Boise, returning Tue, 5 May, priced at AU$1,485 found 4 days ago
Qantas Airways
Fri, 1 May - Fri, 8 May
SYD
Sydney
GEG
Spokane
AU$1,530 Return, found 21 hours ago
AU$1,530
Return
found 21 hours ago
Select Qantas Airways flight, departing Fri, 1 May from Sydney to Spokane, returning Fri, 8 May, priced at AU$1,530 found 21 hours ago
American Airlines
Thu, 28 Jan - Mon, 8 Feb
SYD
Sydney
JAC
Jackson
AU$1,537 Return, found 1 day ago
AU$1,537
Return
found 1 day ago
Select American Airlines flight, departing Thu, 28 Jan from Sydney to Jackson, returning Mon, 8 Feb, priced at AU$1,537 found 1 day ago

Trending flights to Idaho

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

United
Wed, 12 Aug - Wed, 16 Sept
MEL
Melbourne
BOI
Boise
AU$1,262 Return, found 1 day ago
AU$1,262
Return
found 1 day ago
Select United flight, departing Wed, 12 Aug from Melbourne to Boise, returning Wed, 16 Sept, priced at AU$1,262 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 AU$1,158. Booking well ahead will generally help you get an even bigger bargain.
How much is a flight to Idaho?
One-way flights departing from Sydney (SYD) sold for as little as AU$727 in the last seven days. During this time, the price of a round-trip fare to Idaho varied between AU$1,158 and AU$1,537. 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 AU$1,158 and AU$1,537. 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 16ºC and 27ºC 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

Idaho Flights

When was the last time you embarked on a grand adventure? Whether it was last month or years ago, there’s never been a better time to start planning your next big trip. Book tickets to Idaho today and get ready to build your travel itinerary, from exploring the area with your family to recharging in the change of scenery. During your stay, visit the must-see attractions, chow down on the local cuisine, and relish in a holiday state of mind. However you decide to spend your upcoming trip, we’re here to make your travel plans easy and affordable.

Book Your Idaho Airfare

At Expedia.com.au, it’s simple to find cheap flights to Idaho that won’t cause your wallet to flinch. Browse through our inventory of Idaho flights and find airfare matching your preferred times and dates. Looking for a red-eye flight or an afternoon departure? Don’t worry, we’ve got you covered. You can even take advantage of our convenient My Scratchpad online feature, which lets you track your search results with ease. No more excuses; book your travel arrangements with us today to make your dream trip a reality.

Idaho Flights

Travel information

Idaho Flights Information

Airlines serving
American Airlines, Delta, United, Air New Zealand, Qantas Airways
Roundtrip price
from AU$1,158
Idaho Flights Information

Explore a world of travel with Expedia

*Available to Expedia members.