In terms of precipitation, rainfall in Gustavus ranges from 2.7 - 8.2 inches per month. October is typically the wettest month, when rainfall can reach 8.2 in. April is typically the driest time to visit Gustavus when rainfall is around 2.7 in.

If weather is an important factor for your trip to Gustavus, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 55.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

What is the cheapest time of day to fly from ID to GST?

When flying from Idaho to Gustavus, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Gustavus from Idaho?

Located just 1.2 mi from the city center, Gustavus Arpt (GST) is the airport most travelers will use when flying to Gustavus from Idaho.

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

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

How can I find direct flights from Idaho to Gustavus?

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

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

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

$979+ Flights from Idaho to Gustavus

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Cheap flight deals from Idaho to Gustavus

Round-trip from	$979 (Alaska Airlines)

From Idaho to Gustavus Arpt

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Find flight deals from Idaho to Gustavus

Cheapest flights from Idaho to Gustavus
Explore the most affordable flight options available from Idaho to Gustavus. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Mon 8/259:00 amBOI - GST

2 stops9h 43mAlaska Airlines

Wed 8/275:29 pmGST - BOI

2 stops18h 19mAlaska Airlines

Deal found 8/10

$979

Best flights from Idaho to Gustavus
Discover carefully curated flight deals from Idaho to Gustavus that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Mon 8/259:00 amBOI - GST

2 stops9h 43mAlaska Airlines

Wed 8/275:29 pmGST - BOI

2 stops18h 19mAlaska Airlines

Deal found 8/10

$979

Last-minute flights from Idaho to Gustavus
Discover last-minute flight deals from Idaho to Gustavus. Data last updated August 14, 2025 and is based on user searches.

Mon 8/259:00 amBOI - GST

2 stops9h 43mAlaska Airlines

Wed 8/275:29 pmGST - BOI

2 stops18h 19mAlaska Airlines

Deal found 8/10

$979

Fly from

Fly to

Route

Depart

Return

Price

BoiseGustavus

BOI - GST

BOIGST

Boise Air Term. Gowen Fld

Mon 8/25

9:00 am-4:43 pm

2 stops9h 43m

Gustavus Arpt

Wed 8/27

5:29 pm-1:48 pm

2 stops18h 19m

$979

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/10

Best time to book a flight from Idaho to Gustavus

Have a flexible travel schedule? Discover the best time to fly to Gustavus from Idaho 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 Idaho to Gustavus

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Gustavus from Idaho?
Located just 1.2 mi from the city center, Gustavus Arpt (GST) is the airport most travelers will use when flying to Gustavus from Idaho.
Can I find deals for flights from Idaho to Gustavus that include hotel bookings?
Yes. In addition to deals on Idaho to Gustavus flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho to Gustavus?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Gustavus.
Can I find deals for business class flights from Idaho to Gustavus?
Yes. Cheapflights offers flight deals from Idaho to Gustavus by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$979+ Cheap flights from Idaho to Gustavus (GST)

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho to Gustavus with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho to Gustavus

Keep the following information in mind while searching for Idaho to Gustavus flight deals. Data was last updated August 14, 2025.

Round-trip from

Find flight deals from Idaho to Gustavus

Cheapest flights from Idaho to GustavusExplore the most affordable flight options available from Idaho to Gustavus. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Idaho to Gustavus. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

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Use the filters below to find and compare flights from Idaho to Gustavus that are best for you.

Best time to book a flight from Idaho to Gustavus

Have a flexible travel schedule? Discover the best time to fly to Gustavus from Idaho with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Gustavus

Related info for your journey

Find useful and relevant information for your journey from Idaho to Gustavus. 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 into for flights to Gustavus from Idaho?

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

How can I find direct flights from Idaho to Gustavus?

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

Browse thousands of different options on Cheapflights for your next trip

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Cheapest flights from Idaho to Gustavus
Explore the most affordable flight options available from Idaho to Gustavus. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.