How long is the flight from Portland, Maine to Guam?

Airlines like United Airlines fly from Portland, Maine to Guam in about 31h 35m. The time it takes to get you to your destination can typically vary by up to . The distance from Portland, Maine to Guam is about 7906 mi.

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 PWM to GU?

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

What airport do you fly from for flights from Portland to Guam?

Located just 2.9 mi from the city center, Portland (PWM) is the airport most travelers will use when flying to Guam from Portland.

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

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

How can I find direct flights from Portland to Guam?

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

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

Yes. Cheapflights offers flight deals from Portland 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.

$2,318+ Flights from Portland, ME to Guam

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Cheap flight deals from Portland to Guam

Best flights from Portland to Guam
Discover carefully curated flight deals from Portland to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Sat 2/76:00 amPWM - GUM

2 stops31h 20mUnited Airlines

Wed 2/117:20 pmGUM - PWM

2 stops40h 54mUnited Airlines

Deal found 12/9

$2,318

Mon 1/55:30 amPWM - GUM

2 stops22h 30mUnited Airlines

Fri 1/167:20 pmGUM - PWM

2 stops38h 34mUnited Airlines

Deal found 12/11

$2,551

Tue 1/66:00 amPWM - GUM

2 stops31h 20mUnited Airlines

Fri 1/167:20 pmGUM - PWM

2 stops38h 34mUnited Airlines

Deal found 12/11

$2,568

Wed 1/76:00 amPWM - GUM

2 stops31h 20mUnited Airlines

Fri 1/167:20 pmGUM - PWM

2 stops38h 34mUnited Airlines

Deal found 12/11

$2,568

Last-minute flights from Portland to Guam
Discover last-minute flight deals from Portland to Guam. Data last updated December 12, 2025 and is based on user searches.

Mon 1/55:30 amPWM - GUM

2 stops22h 30mUnited Airlines

Fri 1/167:20 pmGUM - PWM

2 stops38h 34mUnited Airlines

Deal found 12/11

$2,551

Tue 1/66:00 amPWM - GUM

2 stops31h 20mUnited Airlines

Fri 1/167:20 pmGUM - PWM

2 stops38h 34mUnited Airlines

Deal found 12/11

$2,568

Find flight deals from Portland to Guam

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$2,223 (United Airlines)
Popular in	January
Cheapest in	February
Average price	$2,242

Provider with most accurate pricing for Boston Logan Intl-Tamuning Guam Intl flight deals.

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Provider most trusted by Cheapflights users for Boston Logan Intl-Tamuning Guam Intl flights.

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From Portland to Guam

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($99 potential increase over avg. RT price).

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Cheapest flight prices on average. 8% potential price decrease ($201 potential savings vs. average RT price).

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Average for round-trip flights in December 2025

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Fly from

Fly to

Route

Depart

Return

Price

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Sat 2/7

6:00 am-4:20 am

2 stops31h 20m

Tamuning Guam Intl

Wed 2/11

7:20 pm-9:14 pm

2 stops40h 54m

$2,318

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Mon 1/5

5:30 am-7:00 pm

2 stops22h 30m

Tamuning Guam Intl

Fri 1/16

7:20 pm-6:54 pm

2 stops38h 34m

$2,551

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Tue 1/6

6:00 am-4:20 am

2 stops31h 20m

Tamuning Guam Intl

Fri 1/16

7:20 pm-6:54 pm

2 stops38h 34m

$2,568

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Wed 1/7

6:00 am-4:20 am

2 stops31h 20m

Tamuning Guam Intl

Fri 1/16

7:20 pm-6:54 pm

2 stops38h 34m

$2,568

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Best time to book a flight from Portland to Guam

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

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

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

Related info for your journey

What airport do you fly from for flights from Portland to Guam?
Located just 2.9 mi from the city center, Portland (PWM) is the airport most travelers will use when flying to Guam from Portland.
How long is the flight from Portland, Maine to Guam?
Airlines like United Airlines fly from Portland, Maine to Guam in about 31h 35m. The time it takes to get you to your destination can typically vary by up to . The distance from Portland, Maine to Guam is about 7906 mi.
Can I find deals for flights from Portland to Guam that include hotel bookings?
Yes. In addition to deals on Portland to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Guam.
Can I find deals for business class flights from Portland to Guam?
Yes. Cheapflights offers flight deals from Portland 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.

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$2,318+ Cheap flights from Portland, ME (PWM) 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Portland to Guam

Best flights from Portland to GuamDiscover carefully curated flight deals from Portland to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Discover carefully curated flight deals from Portland to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Find flight deals from Portland to Guam

Keep the following information in mind while searching for Portland to Guam flight deals. Data was last updated December 12, 2025.

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Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

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

Best time to book a flight from Portland to Guam

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

Cheapflights Insights

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

Related info for your journey

Find useful and relevant information for your journey from Portland to Guam. 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 Portland to Guam?

How long is the flight from Portland, Maine to Guam?

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

How can I find direct flights from Portland to Guam?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portland to Guam

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Best flights from Portland to Guam
Discover carefully curated flight deals from Portland to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.