$678 Find Cheap Flights from Portland to Guam - Compare and Save

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Book Cheap Portland to Guam Plane Tickets

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Guam

Wed, Nov 25 - Wed, Dec 2
Alaska Airlines Logo
6:22 am - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
38h 23m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 1:28 pmGUM  Tamuning Guam Intl-PDX Portland
38h 43m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,215Alaska Airlines
Sun, Jan 10 - Thu, Jan 14
Alaska Airlines Logo
7:30 am - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
37h 15m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 3:21 pmGUM  Tamuning Guam Intl-PDX Portland
40h 36m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,333Alaska Airlines
Sun, Jan 10 - Thu, Jan 14
Alaska Airlines Logo
7:30 am - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
37h 15m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 3:21 pmGUM  Tamuning Guam Intl-PDX Portland
40h 36m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,334Alaska Airlines
Tue, Dec 1 - Thu, Dec 24
Alaska Airlines Logo
12:06 pm - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
56h 39m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 1:24 pmGUM  Tamuning Guam Intl-PDX Portland
38h 39m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,340Alaska Airlines
Sun, Jan 10 - Thu, Jan 14
Alaska Airlines Logo
12:00 pm - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
56h 45m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 10:17 pmGUM  Tamuning Guam Intl-PDX Portland
47h 32m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,440Alaska Airlines
Mon, Mar 1 - Mon, Mar 15
Alaska Airlines Logo
5:35 pm - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
51h 10m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 10:44 pmGUM  Tamuning Guam Intl-PDX Portland
46h 59m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,603Alaska Airlines
Mon, Mar 1 - Mon, Mar 15
Alaska Airlines Logo
6:07 am - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
38h 38m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 9:13 pmGUM  Tamuning Guam Intl-PDX Portland
45h 28m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,733Alaska Airlines
Mon, Mar 1 - Mon, Mar 15
Alaska Airlines Logo
6:07 am - 2:45 pmPDX  Portland-GUM Tamuning Guam Intl
38h 38m2 stops Seattle/Tacoma Intl Tokyo Narita
Alaska Airlines Logo
4:45 pm - 9:13 pmGUM  Tamuning Guam Intl-PDX Portland
45h 28m2 stops Tokyo Narita Seattle/Tacoma Intl
$1,734Alaska Airlines
Mon, Jan 18 - Thu, Jan 28
United Airlines Logo
7:00 am - 7:00 pmPDX  Portland-GUM Tamuning Guam Intl
18h 00m2 stops San Francisco Honolulu
United Airlines Logo
7:45 am - 2:36 pmGUM  Tamuning Guam Intl-PDX Portland
24h 51m2 stops Honolulu San Francisco
$1,819United Airlines
Mon, Feb 8 - Fri, Feb 19
United Airlines Logo
7:00 am - 7:00 pmPDX  Portland-GUM Tamuning Guam Intl
18h 00m2 stops San Francisco Honolulu
United Airlines Logo
7:45 am - 6:16 pmGUM  Tamuning Guam Intl-PDX Portland
28h 31m2 stops Honolulu San Francisco
$1,869United Airlines
Booking Insights

Price, demand and travel trends for Portland to Guam flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Portland to Guam right now?

The cheapest fare from Portland to Guam in the last week was $1,215 round-trip, to Tamuning Guam Intl (GUM).

Which airport in Guam is the cheapest to fly to from Portland?

All flights from Portland to Guam arrive at Tamuning Guam Intl (GUM). On average, round-trip fares are around $2,128.

What’s the cheapest day to fly from Portland to Guam?

Thursday tends to be the cheapest day to fly from Portland to Guam, while Friday is the most expensive. Fares run about 27% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Portland to Guam?

Data from the past 12 months shows it's cheapest to fly to Guam during the morning with average prices of $2,128. The evening is the most expensive time to fly, with average prices of $2,257.

Find deals

Key details for Portland to Guam flights

Low season

September

Cheapest flight

$678
Beat the crowds with an average 76% drop in travelers.
The most popular month to fly with an average 43% increase in travelers.
One-way flight from Portland to Tamuning

Your Portland to Guam flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Portland to Guam?

    Yes. Fares from Portland to Guam are low right now. As a rule of thumb, a round-trip under $1,968 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Portland to Guam?

    Over the past 12 months, round-trip fares from Portland to Guam have ranged from $1,968 to $2,574.

  • What are the main airports serving Guam?

    Flights to Guam all arrive at Tamuning Guam Intl (GUM).

  • Which cabin classes are available on flights from Portland to Guam?

    On flights from Portland to Guam you can book Economy Class or First Class.

  • What are some popular landmarks in Guam?

    KAYAK travelers' favorite landmarks in Guam include:

    • Tumon Bay
    • Dusit Thani Guam Resort and Convention Center

Your guide to booking Portland to Guam flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for June when flights are typically cheapest and avoid January when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Friday cost about 27% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Tamuning, which is the most popular destination in Guam. From there, it's easy to continue on to other popular destinations such as Yona, Dededo and Barrigada.

Reviews of the top airline flying from Portland to Guam

 
Need help choosing which airline to fly with from Portland to Guam? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
United AirlinesOverall score based on 10451 reviews
8.1Crew
7.7Boarding
7.3Comfort
7.1Entertainment
6.7Food
Airline reviews

The food could be much better. Also very unfortunate that most of business class seats were empty but I could not upgrade.

6.0 GoodAnonymous, Oct 2026
Read more United Airlines reviews

The food could be much better. Also very unfortunate that most of business class seats were empty but I could not upgrade.

It was serviceable, nothing special but nothing awful on this leg.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

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