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$1,400+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GUM
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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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 April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,593
(Delta)

One-way from

$1,400
(Delta)

Popular in

December

Cheapest in

March

Average price

$1,864
Provider with most accurate pricing for Seattle/Tacoma Intl-Tamuning Guam Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Tamuning Guam Intl flights.
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From Washington to Guam
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One-way flight from Washington to Guam
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Highest demand for flights based on searches. 3% potential increase in price ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 1, 2025.

This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1212:40 pmSEA - GUM
1 stop33h 35mDelta
Mon 5/265:00 pmGUM - SEA
1 stop37h 35mDelta
Deal found 3/31$1,593
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:45 amPDX - GUM
2 stops19h 20mUnited Airlines
Mon 1/127:25 amGUM - PDX
2 stops20h 50mUnited Airlines
Deal found 3/31$1,867
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Mon 8/185:00 amSEA - GUM
2 stops20h 05mUnited Airlines
Wed 9/106:55 amGUM - SEA
3 stops31h 17mUnited Airlines
Deal found 3/31$1,917
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/45:15 pmPDX - GUM
2 stops53h 00mDelta
Sat 5/245:00 pmGUM - PDX
2 stops40h 59mDelta
Deal found 3/31$1,959
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/166:10 amGEG - GUM
2 stops40h 05mDelta
Fri 5/235:00 pmGUM - GEG
2 stops46h 50mDelta
Deal found 4/1$2,002
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/308:15 amSEA - GUM
1 stop17h 00mMultiple Airlines
Wed 5/77:00 amGUM - SEA
2 stops28h 06mMultiple Airlines
Deal found 3/31$2,428
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 5/166:00 amGEG - GUM
2 stops19h 15mUnited Airlines
Fri 5/237:00 amGUM - GEG
3 stops22h 35mUnited Airlines
Deal found 4/1$2,625

Cheapflights Fare Finder

Customize your flight search to find flights from Washington 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 April 1, 2025.
Use the filters below to find and compare flights from Washington to Guam that are best for you.

Fly from

Washington

Fly to

Guam

Route

Depart

Return

Price

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Mon 5/12

12:40 pm-3:15 pm

1 stop33h 35m

Tamuning Guam Intl

Mon 5/26

5:00 pm-1:35 pm

1 stop37h 35m

$1,593

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Sat 9/6

5:40 pm-6:05 pm

2 stops55h 25m

Tamuning Guam Intl

Tue 9/30

6:55 am-12:27 pm

2 stops22h 32m

$1,895

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Tue 6/10

7:27 pm-6:05 pm

2 stops29h 38m

Tamuning Guam Intl

Wed 6/18

7:00 am-9:45 am

2 stops19h 45m

$1,917

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Sun 5/4

5:15 pm-3:15 pm

2 stops53h 00m

Tamuning Guam Intl

Sat 5/24

5:00 pm-4:59 pm

2 stops40h 59m

$1,959

SpokaneTamuning

GEG - GUM

GEGGUM

Spokane

Fri 5/16

6:10 am-3:15 pm

2 stops40h 05m

Tamuning Guam Intl

Fri 5/23

5:00 pm-10:50 pm

2 stops46h 50m

$2,002

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Wed 4/30

8:15 am-6:15 pm

1 stop17h 00m

Tamuning Guam Intl

Wed 5/7

7:00 am-6:06 pm

2 stops28h 06m

$2,428

SpokaneTamuning

GEG - GUM

GEGGUM

Spokane

Fri 5/16

6:00 am-6:15 pm

2 stops19h 15m

Tamuning Guam Intl

Fri 5/23

7:00 am-12:35 pm

3 stops22h 35m

$2,625

PortlandTamuning

PDX - GUM

PDXGUM

Portland

Thu 4/17

12:59 am-3:15 pm

2 stops45h 16m

$1,400

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Sun 6/8

12:55 pm-3:15 pm

1 stop33h 20m

$1,471

SeattleTamuning

SEA - GUM

SEAGUM

Seattle/Tacoma Intl

Wed 4/30

7:33 pm-6:15 pm

2 stops29h 42m

$1,574

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 11 results
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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?

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 April 1, 2025.

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.

Rainfall in Guam by month

Plan your trip to Guam by taking into account the average rainfall totals by month.

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.

Temperature in Guam by month

Plan your trip to Guam by taking into account the average temperature totals by month.

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).

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 April 1, 2025.
Read reviews from past customers who have flown Delta and United Airlines from Washington to Guam. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,615 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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

Discover the top 2 airlines that operate flights from Washington 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,466Average$2,089FlexibilityNo cancel feeOn-time69%
DeltaCheapest$1,542Average$1,662FlexibilityNo cancel feeOn-timeN/A
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