$566 Find Cheap Flights from Portland to Guam - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Guam departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap Portland to Guam Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Guam that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Guam

Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
5:41 pm - 2:35 pm-
51h 54m
Multiple Airlines Logo
5:20 pm - 10:01 pm-
45h 41m
$1,202Multiple Airlines
Tue, Sep 22 - Thu, Oct 8
Multiple Airlines Logo
7:09 am - 2:35 pm-
38h 26m
Multiple Airlines Logo
4:40 pm - 9:56 pm-
46h 16m
$1,353Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
5:41 pm - 2:35 pm-
51h 54m
Multiple Airlines Logo
4:35 pm - 10:01 pm-
46h 26m
$1,632Multiple Airlines
Tue, Sep 8 - Fri, Sep 25
Multiple Airlines Logo
5:41 pm - 2:35 pm-
51h 54m
Multiple Airlines Logo
4:35 pm - 6:38 pm-
43h 03m
$1,719Multiple Airlines
Tue, Dec 15 - Tue, Jan 26
Alaska Airlines Logo
7:10 am - 2:35 pm-
37h 25m
Alaska Airlines Logo
4:35 pm - 12:22 pm-
37h 47m
$1,724Alaska Airlines
Tue, Dec 15 - Mon, Feb 1
Alaska Airlines Logo
5:00 am - 2:35 pm-
39h 35m
Alaska Airlines Logo
4:35 pm - 9:13 pm-
46h 38m
$1,724Alaska Airlines
Tue, Dec 15 - Sat, Jan 30
Alaska Airlines Logo
5:00 am - 2:35 pm-
39h 35m
Alaska Airlines Logo
4:35 pm - 9:13 pm-
46h 38m
$1,724Alaska Airlines
Tue, Dec 15 - Wed, Jan 27
Alaska Airlines Logo
5:00 am - 2:35 pm-
39h 35m
Alaska Airlines Logo
4:35 pm - 9:13 pm-
46h 38m
$1,774Alaska Airlines
Wed, Dec 16 - Thu, Jan 28
United Airlines Logo
7:49 pm - 7:00 pm-
29h 11m
United Airlines Logo
7:45 am - 6:31 pm-
28h 46m
$1,869United Airlines
Wed, Dec 16 - Mon, Jan 18
United Airlines Logo
7:49 pm - 7:00 pm-
29h 11m
United Airlines Logo
7:45 am - 12:25 pm-
22h 40m
$1,869United Airlines
Booking Insights

KAYAK's insights & trends for Portland to Guam flights

Get data-powered insights and trends into flights from Portland to Guam to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to Guam?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Guam, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Guam is May, when tickets cost $0 (return) on average. On the other hand, the most expensive months are January and August, when the average cost of round-trip tickets is $3,349 and $2,854 respectively.

Good to know

Low season

September

Cheapest flight

$566
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Portland to Tamuning

FAQs - booking Guam flights

  • How does KAYAK find such low prices on flights from Portland to Guam?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Guam.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Guam?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Guam is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Guam?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to Guam with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Guam?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Guam up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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.
7.4
United AirlinesOverall score based on 10059 reviews
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

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

10.0 ExcellentJanaki, Feb 2026
Read more United Airlines reviews

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.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

I liked being upgraded to first class. The flight was a redeye, so I did sleep most of it.

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

Information on your arrival and departure airports