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$2,328+ Cheap flights from Newcastle (NTL) to Idaho

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
NTL — BOI
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Newcastle to Idaho

Best flights from Newcastle to Idaho
Discover carefully curated flight deals from Newcastle to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

This Qantas Airways deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/65:00 pmNTL - BOI
2 stops48h 00mQantas Airways
Mon 3/98:12 pmBOI - NTL
2 stops31h 53mQantas Airways
Deal found 12/21$2,328

Find flight deals from Newcastle to Idaho

Keep the following information in mind while searching for Newcastle to Idaho flight deals. Data was last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$2,328
(Qantas Airways)

Popular in

July

Cheapest in

October

Average price

$1,208
Provider with most accurate pricing for Sydney Kingsford Smith-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Boise Air Term. Gowen Fld flights.
Search Deals
From Newcastle Williamtown to Idaho
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Newcastle to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Newcastle to Idaho that are best for you.

Fly from

Newcastle

Fly to

Idaho

Route

Depart

Return

Price

NewcastleBoise

NTL - BOI

NTLBOI

Newcastle Williamtown

Fri 3/6

5:00 pm-11:00 pm

2 stops48h 00m

Boise Air Term. Gowen Fld

Mon 3/9

8:12 pm-9:05 pm

2 stops31h 53m

$2,328

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Best time to book a flight from Newcastle to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Newcastle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Newcastle to Idaho
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Newcastle to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Newcastle to Idaho?

    Newcastle Williamtown (NTL), located 9.7 mi from the city center, is the airport you fly out of when you book flights from Newcastle to Idaho.

  • How long is the flight from Newcastle to Idaho?

    Qantas Airways can get you from Newcastle to Idaho in just under 48h. Your travel time can differ by up to . Newcastle and Idaho are separated by a distance of 7816 mi.

  • Can I find deals for flights from Newcastle to Idaho that include hotel bookings?

    Yes. In addition to deals on Newcastle to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Newcastle to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Newcastle to Idaho.

  • Can I find deals for business class flights from Newcastle to Idaho?

    Yes. Cheapflights offers flight deals from Newcastle to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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