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Cheap flights from Portland, Maine to Guam from $2,159

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Guam departing on 4/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland, Maine to Guam

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
12:46 pm - 11:55 pm
PWM
-
GUM
45h 09m
2 stops
Delta Logo
5:20 pm - 11:09 pm
GUM
-
PWM
43h 49m
2 stops
$2,159Delta
Sun, Apr 19 - Thu, May 7
Delta Logo
4:43 pm - 3:35 pm
PWM
-
GUM
56h 52m
2 stops
Delta Logo
5:20 pm - 11:09 pm
GUM
-
PWM
43h 49m
2 stops
$2,209Delta
Sat, Apr 18 - Thu, May 7
United Airlines Logo
7:10 pm - 4:25 am
PWM
-
GUM
43h 15m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,312United Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
6:00 am - 9:45 pm
PWM
-
GUM
25h 45m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,455United Airlines
Thu, Apr 16 - Wed, May 6
United Airlines Logo
6:00 am - 3:40 pm
PWM
-
GUM
43h 40m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,463United Airlines
Thu, Apr 16 - Thu, May 7
United Airlines Logo
6:00 am - 9:45 pm
PWM
-
GUM
25h 45m
2 stops
United Airlines Logo
12:10 pm - 9:19 pm
GUM
-
PWM
23h 09m
3 stops
$2,474United Airlines
Thu, Apr 16 - Thu, May 7
United Airlines Logo
6:00 am - 9:15 pm
PWM
-
GUM
25h 15m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,505United Airlines
Thu, Apr 16 - Fri, May 8
United Airlines Logo
2:12 pm - 4:25 am
PWM
-
GUM
48h 13m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,513United Airlines
Sat, Apr 18 - Wed, May 6
United Airlines Logo
6:00 am - 9:15 pm
PWM
-
GUM
25h 15m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,528United Airlines
Thu, Apr 16 - Wed, May 6
United Airlines Logo
6:00 am - 9:15 pm
PWM
-
GUM
25h 15m
2 stops
United Airlines Logo
7:05 am - 3:41 pm
GUM
-
PWM
22h 36m
2 stops
$2,576United Airlines
Thu, Apr 16 - Wed, May 6

United Airlines flights from Portland, Maine to Guam

Our best United Airlines deals on Portland, Maine to Guam flight tickets
United Airlines
May 1
PWM7:10 pmPortland
43h 15m
2 stops
GUM4:25 amTamuning Guam Intl
May 5
GUM7:05 amTamuning Guam Intl
22h 36m
2 stops
PWM3:41 pmPortland
$2,312
United Airlines
Apr 16
PWM6:00 amPortland
25h 45m
2 stops
GUM9:45 pmTamuning Guam Intl
May 6
GUM7:05 amTamuning Guam Intl
22h 36m
2 stops
PWM3:41 pmPortland
$2,455
United Airlines
Apr 16
PWM6:00 amPortland
43h 40m
2 stops
GUM3:40 pmTamuning Guam Intl
May 7
GUM7:05 amTamuning Guam Intl
22h 36m
2 stops
PWM3:41 pmPortland
$2,463

Delta flights from Portland, Maine to Guam

Our best Delta deals on Portland, Maine to Guam flight tickets
Delta
Apr 19
PWM12:46 pmPortland
45h 09m
2 stops
GUM11:55 pmTamuning Guam Intl
May 7
GUM5:20 pmTamuning Guam Intl
43h 49m
2 stops
PWM11:09 pmPortland
$2,159
Delta
Apr 18
PWM4:43 pmPortland
56h 52m
2 stops
GUM3:35 pmTamuning Guam Intl
May 7
GUM5:20 pmTamuning Guam Intl
43h 49m
2 stops
PWM11:09 pmPortland
$2,209
Delta
Apr 15
PWM12:46 pmPortland
45h 09m
2 stops
GUM11:55 pmTamuning Guam Intl
May 7
GUM5:20 pmTamuning Guam Intl
36h 47m
2 stops
PWM4:07 pmPortland
$2,612

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated March 25, 2026.
Use the filters below to find and compare flights from Portland, Maine to Guam that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Sun 4/19

12:46 pm-11:55 pm

2 stops45h 09m

Tamuning Guam Intl

Thu 5/7

5:20 pm-11:09 pm

2 stops43h 49m

$2,159

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Sat 4/18

4:43 pm-3:35 pm

2 stops56h 52m

Tamuning Guam Intl

Thu 5/7

5:20 pm-11:09 pm

2 stops43h 49m

$2,209

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Fri 5/1

7:10 pm-4:25 am

2 stops43h 15m

Tamuning Guam Intl

Tue 5/5

7:05 am-3:41 pm

2 stops22h 36m

$2,312

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Thu 4/16

6:00 am-9:45 pm

2 stops25h 45m

Tamuning Guam Intl

Wed 5/6

7:05 am-3:41 pm

2 stops22h 36m

$2,455

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Thu 4/16

6:00 am-3:40 pm

2 stops43h 40m

Tamuning Guam Intl

Thu 5/7

7:05 am-3:41 pm

2 stops22h 36m

$2,463

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Thu 4/16

6:00 am-9:45 pm

2 stops25h 45m

Tamuning Guam Intl

Thu 5/7

12:10 pm-9:19 pm

3 stops23h 09m

$2,474
Quickest round-trip

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Thu 4/16

6:00 am-9:15 pm

2 stops25h 15m

Tamuning Guam Intl

Fri 5/8

7:05 am-3:41 pm

2 stops22h 36m

$2,505

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Sat 4/18

2:12 pm-4:25 am

2 stops48h 13m

Tamuning Guam Intl

Wed 5/6

7:05 am-3:41 pm

2 stops22h 36m

$2,513

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Thu 4/16

6:00 am-9:15 pm

2 stops25h 15m

Tamuning Guam Intl

Wed 5/6

7:05 am-3:41 pm

2 stops22h 36m

$2,528

PortlandTamuning

PWM - GUM

PWMGUM

Portland

Thu 4/16

6:00 am-9:15 pm

2 stops25h 15m

Tamuning Guam Intl

Wed 5/6

7:05 am-3:41 pm

2 stops22h 36m

$2,576

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Portland, Maine to Guam flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Guam

Fastest flight time

25h 45m

Direct flights

None
The fastest flight from Portland, Maine to Guam takes 25h 45m
There are no direct flights from Portland, Maine to Guam. There are no popular flight routes from Portland, Maine to Guam.
Search flight deals

  • When did momondo last update prices for flights from Portland Airport to Guam?

    Prices for flights from Portland Airport to Guam refresh daily.

  • How old do you have to be to fly from Portland Airport to Guam?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Guam.

  • What documentation or ID do you need to fly to Guam?

    The required travel and health documents for your Guam trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Guam. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Portland, Maine to Guam?

    Search flight deals from Portland, Maine to Guam. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Portland, Maine to Guam with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Guam?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Guam from Portland.

Can I find flights from Portland to Guam with flexible booking policies on momondo?

All flight searches from Portland to Guam on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Guam?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Guam.

I’m not ready to book a flight from Portland to Guam right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Guam now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Guam and let you know when they change.

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Fri 4/24
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Flights to Tamuningfrom $923