HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Guam

$631+ Cheap flights from Portland (PDX) to Guam

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — GUM
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Guam with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portland to Guam

Cheapest flights from Portland to Guam
Explore the most affordable flight options available from Portland to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This United Airlines deal was found by Cheapflights users on 12/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:35 pmPDX - GUM
2 stops57h 25mUnited Airlines
Fri 12/267:40 amGUM - PDX
2 stops29h 08mUnited Airlines
Deal found 12/19$2,999
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:14 amPDX - GUM
2 stops38h 21mMultiple Airlines
Sat 12/274:35 pmGUM - PDX
2 stops43h 22mMultiple Airlines
Deal found 12/21$4,681
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:30 amPDX - GUM
3 stops29h 15mUnited Airlines
Sat 12/2712:30 pmGUM - PDX
2 stops28h 16mUnited Airlines
Deal found 12/21$8,636

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 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,818
(United Airlines)

One-way from

$631
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$2,248
Provider with most accurate pricing for Portland-Tamuning Guam Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Tamuning Guam Intl flights.
Search Deals
From Portland to Guam
Search Deals
One-way flight from Portland to Guam
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($195 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($66 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 Portland to Guam 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 Portland to Guam that are best for you.

Fly from

Portland

Fly to

Guam

Route

Depart

Return

Price

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Mon 2/23

7:57 pm-7:05 pm

2 stops29h 08m

Tamuning Guam Intl

Mon 3/9

7:25 am-6:48 pm

2 stops28h 23m

$1,818

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Sun 3/15

1:39 pm-6:50 pm

2 stops36h 11m

Tamuning Guam Intl

Sun 4/5

7:30 pm-2:31 pm

2 stops36h 01m

$1,857

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Thu 3/12

7:30 am-6:50 pm

2 stops18h 20m

Tamuning Guam Intl

Sat 3/28

7:25 am-6:47 pm

2 stops28h 22m

$1,890

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Wed 1/14

9:20 am-11:05 pm

2 stops19h 45m

Tamuning Guam Intl

Tue 2/3

1:00 am-8:32 pm

2 stops37h 32m

$2,008

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Wed 1/14

5:30 am-11:05 pm

2 stops23h 35m

Tamuning Guam Intl

Tue 1/20

1:00 am-4:30 pm

2 stops33h 30m

$2,008

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Fri 3/6

5:30 am-7:05 pm

2 stops19h 35m

Tamuning Guam Intl

Mon 3/9

7:25 am-6:48 pm

2 stops28h 23m

$2,178

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Tue 2/17

5:35 am-7:05 pm

2 stops19h 30m

Tamuning Guam Intl

Fri 2/20

7:05 am-6:55 pm

2 stops29h 50m

$2,198

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Wed 1/14

5:35 am-4:20 am

2 stops28h 45m

Tamuning Guam Intl

Wed 2/4

7:40 am-2:53 pm

2 stops25h 13m

$2,401

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Mon 1/5

7:45 pm-7:05 pm

2 stops29h 20m

Tamuning Guam Intl

Thu 1/15

7:40 am-12:33 pm

2 stops22h 53m

$2,428

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Thu 1/1

9:19 am-11:05 pm

2 stops19h 46m

Tamuning Guam Intl

Tue 1/6

4:50 pm-8:59 pm

2 stops46h 09m

$2,809

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 12 results
1
2

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.

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Portland to Guam (average of $797). Flying from Portland to Guam in October is currently the most expensive (average of $2,488). 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.

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

Find hourly flight availability from Portland to Guam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland to Guam in the afternoon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight at noon.

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 December 23, 2025.
Get a feel of what it's like to fly with United Airlines from Portland to Guam by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,105 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,105 reviews
United Airlines
7.4
Good
9,105 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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?

    If you book a flight to Guam from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland.

  • How long is the flight from Portland to Guam?

    A quick flight from Portland to Guam can take about 19h 45m. United Airlines provides one of the quickest options available for as low as $2,008. The distance from Portland to Guam is about 5676 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from Portland to Guam (average of $797). Flying from Portland to Guam in October is currently the most expensive (average of $2,488). 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

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

Alternative routes for Portland to Guam

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Auckland flights
Portland to Melbourne flights
Portland to Sydney flights
Portland to Brisbane flights
Portland to Christchurch flights
Portland to Nadi flights
Portland to Papeete flights
Portland to Avalon flights
Medford to Sydney flights
Boise to Auckland flights
Portland to Tamuning flights
Boise to Sydney flights
Medford to Auckland flights
Portland to Suva flights
Portland to Queenstown flights
Portland to Rarotonga flights
Portland to Adelaide flights
Eugene to Auckland flights
Portland to Perth flights
Boise to Nadi flights
Portland to Coolangatta flights
Eugene to Sydney flights
Eugene to Brisbane flights
Portland to Wellington flights
Portland to Nuku‘alofa flights
Redmond to Sydney flights
Portland to Vaitape flights
Eugene to Nadi flights
Redmond to Papeete flights
Portland to Tontouta flights
Portland to Pago Pago flights
Medford to Christchurch flights
Boise to Papeete flights
Portland to Koror flights
Boise to Christchurch flights
Boise to Adelaide flights
Boise to Tamuning flights
Portland to Port Vila flights
Portland to Taupo flights
Portland to Townsville flights
Eugene to Perth flights
Redmond to Nadi flights
Medford to Papeete flights
Portland to Napier flights
Portland to Rotorua flights
Portland to Majuro flights
Portland to Raiatea flights
Portland to Fare flights

Top airline flying from Portland to Guam

Discover the top airline that operate flights from Portland to Guam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,602Average$2,136FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.