What is the cheapest month to book a flight from Idaho to Guam?

Currently, January is the cheapest month in which you can book a flight from Idaho to Guam (average of $1,977). Flying from Idaho to Guam in May is currently the most expensive (average of $2,214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in Guam ranges from 2.6 - 14.4 inches per month. August is typically the wettest month, when rainfall can reach 14.4 in. March is typically the driest time to visit Guam when rainfall is around 2.6 in.

If weather is an important factor for your trip to Guam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Guam as you normally would.

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

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

How can I find direct flights from Idaho to Guam?

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

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

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

$3,799+ Flights from Idaho to Guam

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Cheap flight deals from Idaho to Guam

Round-trip from	$1,174 (United Airlines)

From Idaho to Guam

Search Deals

Find flight deals from Idaho to Guam

Cheapest flights from Idaho to Guam
Explore the most affordable flight options available from Idaho to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 26, 2025.

jue. 10/22:12 pmBOI - GUM

2 stops57h 38mUnited Airlines

lun. 10/67:10 amGUM - BOI

2 stops22h 23mUnited Airlines

Deal found 6/25

$1,174

sáb. 10/47:15 amGEG - GUM

2 stops28h 10mUnited Airlines

mar. 10/77:10 amGUM - GEG

2 stops20h 29mUnited Airlines

Deal found 6/25

$2,202

dom. 8/107:15 amGEG - GUM

2 stops39h 00mDelta

sáb. 8/161:55 amGUM - GEG

2 stops38h 13mDelta

Deal found 6/26

$2,213

jue. 10/28:40 amBOI - GUM

2 stops23h 30mDelta

dom. 10/51:55 amGUM - BOI

2 stops32h 36mDelta

Deal found 6/25

$10,419

Best flights from Idaho to Guam
Discover carefully curated flight deals from Idaho to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated junio 26, 2025.

jue. 10/22:12 pmBOI - GUM

2 stops57h 38mUnited Airlines

lun. 10/67:10 amGUM - BOI

2 stops22h 23mUnited Airlines

Deal found 6/25

$1,174

dom. 8/107:15 amGEG - GUM

2 stops39h 00mDelta

sáb. 8/161:55 amGUM - GEG

2 stops38h 13mDelta

Deal found 6/26

$2,213

sáb. 10/47:15 amGEG - GUM

2 stops28h 10mUnited Airlines

mar. 10/77:10 amGUM - GEG

2 stops20h 29mUnited Airlines

Deal found 6/25

$2,202

jue. 10/28:40 amBOI - GUM

2 stops23h 30mDelta

dom. 10/51:55 amGUM - BOI

2 stops32h 36mDelta

Deal found 6/25

$10,419

Last-minute flights from Idaho to Guam
Discover last-minute flight deals from Idaho to Guam. Data last updated junio 26, 2025 and is based on user searches.

lun. 6/306:05 amGEG - GUM

2 stops40h 10mDelta

lun. 7/75:00 pmGUM - GEG

2 stops45h 01mDelta

Deal found 6/26

$2,713

mar. 7/227:25 amGEG - GUM

2 stops39h 20mUnited Airlines

mar. 8/197:15 amGUM - GEG

2 stops20h 23mUnited Airlines

Deal found 6/24

$2,448

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BoiseTamuning

BOI - GUM

BOIGUM

Boise Air Term. Gowen Fld

jue. 10/2

2:12 pm-3:50 pm

2 stops57h 38m

Tamuning Guam Intl

lun. 10/6

7:10 am-1:33 pm

2 stops22h 23m

$1,174

SpokaneTamuning

GEG - GUM

GEGGUM

Spokane

sáb. 10/4

7:15 am-4:25 am

2 stops28h 10m

Tamuning Guam Intl

mar. 10/7

7:10 am-10:39 am

2 stops20h 29m

$2,202

SpokaneTamuning

GEG - GUM

GEGGUM

Spokane

dom. 8/10

7:15 am-3:15 pm

2 stops39h 00m

Tamuning Guam Intl

sáb. 8/16

1:55 am-11:08 pm

2 stops38h 13m

$2,213

BoiseTamuning

BOI - GUM

BOIGUM

Boise Air Term. Gowen Fld

jue. 10/2

8:40 am-12:10 am

2 stops23h 30m

Tamuning Guam Intl

dom. 10/5

1:55 am-6:31 pm

2 stops32h 36m

$10,419

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Best time to book a flight from Idaho to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam 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 Guam

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

Reviews of airlines servicing Guam

Get a feel of what it's like to fly with Delta and United Airlines from Idaho to Guam by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,964 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,838 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Can I find deals for flights from Idaho to Guam that include hotel bookings?
Yes. In addition to deals on Idaho to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Guam.
Can I find deals for business class flights from Idaho to Guam?
Yes. Cheapflights offers flight deals from Idaho to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho to Guam?
Currently, January is the cheapest month in which you can book a flight from Idaho to Guam (average of $1,977). Flying from Idaho to Guam in May is currently the most expensive (average of $2,214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Idaho to Guam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,322	Average$2,117	FlexibilityNo cancel fee	On-time69%

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$1,174+ Cheap flights from Idaho to Guam

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho to Guam 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 Guam

Keep the following information in mind while searching for Idaho to Guam flight deals. Data was last updated junio 26, 2025.

Round-trip from

Find flight deals from Idaho to Guam

Cheapest flights from Idaho to GuamExplore the most affordable flight options available from Idaho to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 26, 2025.

Explore the most affordable flight options available from Idaho to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 26, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Idaho to Guam

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

Cheapflights Insights

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

Reviews of airlines servicing Guam

Get insights into the airlines that provide service to Guam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Guam. Reviews last updated junio 26, 2025.

Get a feel of what it's like to fly with Delta and United Airlines from Idaho to Guam by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

How can I find direct flights from Idaho to Guam?

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

What is the cheapest month to book a flight from Idaho to Guam?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Guam

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Idaho to Guam

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Idaho to Guam
Explore the most affordable flight options available from Idaho to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 26, 2025.