How long is the flight from State of Washington to Guam?

There are many flights that can get you from State of Washington to Guam in 17h 35m. Fly via Delta or United Airlines to get the fastest option. There are 5676 mi between State of Washington and Guam. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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).

How far in advance should I book a flight from State of Washington to Guam?

To save up to 69% on this flight, we recommend booking at least 8 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from State of Washington to Guam from $732 1-2 weeks out and tickets from $1,792 for flights departing within the next 72 hours.

What is the cheapest month to fly from State of Washington to Guam?

The best pricing can be found in the month of October. Prices to Guam from State of Washington average $1,881. You can even find prices in October for less than $1,881, as users have found deals to Guam from as low as $1,198. The month of December appears to be one of the more expensive times to travel to Guam from State of Washington. Flying in the targeted month can save you up to 24%.

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

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

How can I find direct flights from Washington to Guam?

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

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

Yes. Cheapflights offers flight deals from Washington 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.

$556+ Flights from Washington to Guam

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Cheap flight deals from Washington to Guam

Round-trip from	$1,208 (Kiwi.com)
One-way from	$556 (Kiwi.com)
Popular in	December
Cheapest in	October
Average price	$1,867

From Washington to Guam

Search Deals

One-way flight from Washington to Guam

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($99 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($41 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Washington to Guam

Cheapest flights from Washington to Guam
Explore the most affordable flight options available from Washington to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Fri 9/262:50 pmSEA - GUM

1 stop39h 20mMultiple Airlines

Sun 10/53:05 amGUM - SEA

1 stop28h 30mMultiple Airlines

Deal found 9/14

$1,208

Sun 11/161:45 pmSEA - GUM

1 stop31h 15mMultiple Airlines

Sat 11/292:20 amGUM - SEA

2 stops34h 16mMultiple Airlines

Deal found 9/13

$1,292

Fri 9/192:50 pmSEA - GUM

1 stop39h 20mMultiple Airlines

Thu 9/253:40 amGUM - SEA

1 stop28h 05mMultiple Airlines

Deal found 9/13

$1,320

Sun 10/192:55 pmSEA - GUM

1 stop39h 15mMultiple Airlines

Sat 11/812:20 amGUM - SEA

2 stops39h 37mMultiple Airlines

Deal found 9/14

$1,341

Wed 10/152:55 pmSEA - GUM

1 stop30h 35mMultiple Airlines

Tue 10/2112:20 amGUM - SEA

2 stops40h 39mMultiple Airlines

Deal found 9/15

$1,385

Wed 12/31:40 pmSEA - GUM

1 stop31h 20mMultiple Airlines

Sun 12/72:20 amGUM - SEA

1 stop29h 25mMultiple Airlines

Deal found 9/14

$1,495

Thu 11/2011:15 amSEA - GUM

1 stop33h 20mDelta

Wed 12/31:00 amGUM - SEA

1 stop30h 20mDelta

Deal found 9/15

$1,544

Thu 10/305:40 amPDX - GUM

2 stops24h 25mDelta

Wed 11/121:00 amGUM - PDX

2 stops36h 19mDelta

Deal found 9/13

$1,903

Sun 11/97:22 pmPDX - GUM

2 stops33h 43mDelta

Mon 11/171:00 amGUM - PDX

2 stops37h 47mDelta

Deal found 9/13

$1,908

Mon 10/2012:40 amPDX - GUM

2 stops30h 30mDelta

Thu 11/61:00 amGUM - PDX

2 stops37h 26mDelta

Deal found 9/14

$1,953

Thu 10/306:00 amPDX - GUM

2 stops19h 50mUnited Airlines

Thu 11/137:40 amGUM - PDX

2 stops21h 13mUnited Airlines

Deal found 9/13

$1,989

Sat 9/271:18 pmGEG - GUM

2 stops41h 52mDelta

Sun 10/195:00 pmGUM - GEG

2 stops40h 44mDelta

Deal found 9/14

$2,127

Best flights from Washington to Guam
Discover carefully curated flight deals from Washington to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Mon 2/911:25 amSEA - GUM

1 stop17h 40mDelta

Sun 2/221:00 amGUM - SEA

1 stop30h 20mDelta

Deal found 9/14

$1,544

Tue 3/108:15 amPDX - GUM

2 stops17h 35mUnited Airlines

Tue 3/177:25 amGUM - PDX

3 stops33h 54mUnited Airlines

Deal found 9/13

$1,817

Mon 2/911:25 amSEA - GUM

1 stop17h 40mDelta

Tue 2/241:00 amGUM - SEA

1 stop30h 20mDelta

Deal found 9/13

$1,544

Sun 11/166:05 pmSEA - GUM

2 stops35h 00mDelta

Sun 11/304:50 pmGUM - SEA

1 stop38h 30mDelta

Deal found 9/13

$1,549

Mon 3/912:55 amPDX - GUM

2 stops29h 10mDelta

Tue 3/174:50 pmGUM - PDX

2 stops43h 21mDelta

Deal found 9/13

$1,853

Thu 10/305:40 amPDX - GUM

2 stops24h 25mDelta

Wed 11/121:00 amGUM - PDX

2 stops36h 19mDelta

Deal found 9/13

$1,903

Sat 10/412:35 pmGEG - GUM

2 stops60h 30mUnited Airlines

Wed 10/87:05 pmGUM - GEG

2 stops45h 10mUnited Airlines

Deal found 9/13

$2,784

Sun 11/97:22 pmPDX - GUM

2 stops33h 43mDelta

Mon 11/171:00 amGUM - PDX

2 stops37h 47mDelta

Deal found 9/13

$1,908

Tue 10/215:40 amPDX - GUM

2 stops25h 30mDelta

Thu 11/61:00 amGUM - PDX

2 stops37h 26mDelta

Deal found 9/12

$1,953

Sat 9/271:18 pmGEG - GUM

2 stops41h 52mDelta

Sun 10/195:00 pmGUM - GEG

2 stops40h 44mDelta

Deal found 9/14

$2,127

Sat 11/296:15 amPSC - GUM

2 stops22h 50mDelta

Wed 12/34:50 pmGUM - PSC

2 stops45h 01mDelta

Deal found 9/13

$2,153

Last-minute flights from Washington to Guam
Discover last-minute flight deals from Washington to Guam. Data last updated September 15, 2025 and is based on user searches.

Fri 9/192:50 pmSEA - GUM

1 stop39h 20mMultiple Airlines

Thu 9/253:40 amGUM - SEA

1 stop28h 05mMultiple Airlines

Deal found 9/13

$1,320

Fri 9/262:50 pmSEA - GUM

1 stop39h 20mMultiple Airlines

Sun 10/53:05 amGUM - SEA

1 stop28h 30mMultiple Airlines

Deal found 9/14

$1,208

Sat 9/271:18 pmGEG - GUM

2 stops41h 52mDelta

Sun 10/195:00 pmGUM - GEG

2 stops40h 44mDelta

Deal found 9/14

$2,127

Mon 10/137:35 pmPDX - GUM

2 stops29h 30mUnited Airlines

Mon 10/207:10 amGUM - PDX

2 stops18h 50mUnited Airlines

Deal found 9/13

$2,127

Tue 10/1412:15 pmSEA - GUM

1 stop18h 55mDelta

Tue 10/215:00 pmGUM - SEA

1 stop37h 30mDelta

Deal found 9/14

$1,594

Wed 10/152:55 pmSEA - GUM

1 stop30h 35mMultiple Airlines

Tue 10/2112:20 amGUM - SEA

2 stops40h 39mMultiple Airlines

Deal found 9/15

$1,385

Sun 10/192:55 pmSEA - GUM

1 stop39h 15mMultiple Airlines

Sat 11/812:20 amGUM - SEA

2 stops39h 37mMultiple Airlines

Deal found 9/14

$1,341

Sun 10/1911:55 pmSEA - GUM

2 stops31h 15mDelta

Sun 11/94:50 pmGUM - SEA

2 stops49h 09mDelta

Deal found 9/14

$1,603

Mon 10/2012:40 amPDX - GUM

2 stops30h 30mDelta

Fri 11/74:50 pmGUM - PDX

2 stops46h 01mDelta

Deal found 9/14

$1,953

Tue 10/213:50 pmPDX - GUM

3 stops33h 15mUnited Airlines

Fri 11/77:40 amGUM - PDX

2 stops28h 56mUnited Airlines

Deal found 9/14

$2,203

Thu 10/305:40 amPDX - GUM

2 stops24h 25mDelta

Wed 11/121:00 amGUM - PDX

2 stops36h 19mDelta

Deal found 9/13

$1,903

Thu 10/306:00 amPDX - GUM

2 stops19h 50mUnited Airlines

Thu 11/137:40 amGUM - PDX

2 stops21h 13mUnited Airlines

Deal found 9/13

$1,989

One-way flights from Washington to Guam
Search for one-way flight options from Washington to Guam. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Thu 9/259:25 amGEG - GUM

3 stops47h 35mMultiple Airlines

Deal found 9/15

$556

Tue 11/47:09 amPDX - GUM

2 stops38h 06mMultiple Airlines

Deal found 9/15

$574

Mon 9/228:45 pmSEA - GUM

2 stops57h 25mMultiple Airlines

Deal found 9/14

$582

Sun 11/910:30 amPDX - GUM

2 stops42h 30mMultiple Airlines

Deal found 9/13

$589

Sun 11/25:40 pmPDX - GUM

2 stops51h 35mMultiple Airlines

Deal found 9/15

$593

Wed 11/511:10 pmSEA - GUM

2 stops53h 50mMultiple Airlines

Deal found 9/15

$598

Sun 9/218:51 pmGEG - GUM

3 stops49h 29mMultiple Airlines

Deal found 9/15

$604

Wed 11/59:34 amPDX - GUM

3 stops43h 26mMultiple Airlines

Deal found 9/15

$611

Mon 10/1310:35 amPDX - GUM

3 stops35h 45mMultiple Airlines

Deal found 9/13

$615

Mon 11/37:30 amPDX - GUM

3 stops48h 00mMultiple Airlines

Deal found 9/15

$619

Sat 11/86:00 amPDX - GUM

2 stops47h 00mMultiple Airlines

Deal found 9/15

$653

Fri 11/710:28 pmPDX - GUM

2 stops46h 32mMultiple Airlines

Deal found 9/15

$665

Fly from

Fly to

Route

Depart

Return

Price

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Mon 2/9

11:25 am-11:05 pm

1 stop17h 40m

Tamuning Guam Intl

Sun 2/22

1:00 am-1:20 pm

1 stop30h 20m

$1,544

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Mon 2/9

11:25 am-11:05 pm

1 stop17h 40m

Tamuning Guam Intl

Tue 2/24

1:00 am-1:20 pm

1 stop30h 20m

$1,544

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Sun 11/16

6:05 pm-11:05 pm

2 stops35h 00m

Tamuning Guam Intl

Sun 11/30

4:50 pm-1:20 pm

1 stop38h 30m

$1,549

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Tue 3/10

8:15 am-6:50 pm

2 stops17h 35m

Tamuning Guam Intl

Tue 3/17

7:25 am-12:19 am

3 stops33h 54m

$1,817

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Mon 3/9

12:55 am-11:05 pm

2 stops29h 10m

Tamuning Guam Intl

Tue 3/17

4:50 pm-7:11 pm

2 stops43h 21m

$1,853

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Thu 10/30

5:40 am-11:05 pm

2 stops24h 25m

Tamuning Guam Intl

Wed 11/12

1:00 am-7:19 pm

2 stops36h 19m

$1,903

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Sun 11/9

7:22 pm-11:05 pm

2 stops33h 43m

Tamuning Guam Intl

Mon 11/17

1:00 am-8:47 pm

2 stops37h 47m

$1,908

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Tue 10/21

5:40 am-12:10 am

2 stops25h 30m

Tamuning Guam Intl

Thu 11/6

1:00 am-8:26 pm

2 stops37h 26m

$1,953

SpokaneTamuning

GEG - GUM

GEGGUM

Spokane

Sat 9/27

1:18 pm-12:10 am

2 stops41h 52m

Tamuning Guam Intl

Sun 10/19

5:00 pm-4:44 pm

2 stops40h 44m

$2,127

PascoTamuning

PSC - GUM

PSCGUM

Pasco Tri Cities

Sat 11/29

6:15 am-11:05 pm

2 stops22h 50m

Tamuning Guam Intl

Wed 12/3

4:50 pm-7:51 pm

2 stops45h 01m

$2,153

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 28 results

Best time to book a flight from Washington to Guam

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

What is the cheapest month to book a flight from State of Washington to Guam?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Guam (average of $1,977). Flying from State of Washington to Guam in May is currently the most expensive (average of $2,214). 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 WA to GU?

When flying from State of Washington to Guam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

How long is the flight from State of Washington to Guam?
There are many flights that can get you from State of Washington to Guam in 17h 35m. Fly via Delta or United Airlines to get the fastest option. There are 5676 mi between State of Washington and Guam. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Washington to Guam that include hotel bookings?
Yes. In addition to deals on Washington to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Guam.
Can I find deals for business class flights from Washington to Guam?
Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Guam?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Guam (average of $1,977). Flying from State of Washington to Guam in May is currently the most expensive (average of $2,214). 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

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Top 2 airlines flying from Washington to Guam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$532	Average$2,206	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$1,543	Average$1,642	FlexibilityNo cancel fee	On-timeN/A

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$556+ Cheap flights from Washington 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 9/25. 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 Washington to Guam

Keep the following information in mind while searching for Washington to Guam flight deals. Data was last updated September 15, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Washington to Guam

Cheapest flights from Washington to GuamExplore the most affordable flight options available from Washington to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Explore the most affordable flight options available from Washington to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Guam

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

Cheapflights Insights

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

What is the cheapest month to book a flight from State of Washington to Guam?

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

Find hourly flight availability from Washington 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 September 15, 2025.

Related info for your journey

Find useful and relevant information for your journey from Washington to Guam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from State of Washington to Guam?

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

How can I find direct flights from Washington to Guam?

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

What is the cheapest month to book a flight from State of Washington to Guam?

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 Washington to Guam

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Washington to Guam

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Cheapest flights from Washington to Guam
Explore the most affordable flight options available from Washington to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.