How long is the flight from Washington, D.C. Dulles Intl Airport to Guam?

A quick flight from Washington, D.C. Dulles Intl Airport to Guam can take about 30h. United Airlines provides one of the quickest options available for as low as $1,918. There are 7899 mi between Washington, D.C. Dulles Intl Airport 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).

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

When flying from Washington, D.C. Dulles Intl Airport 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.

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

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

How can I find direct flights from Dulles Intl to Guam?

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

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

Yes. Cheapflights offers flight deals from Dulles Intl 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.

$712+ Flights from Washington, D.C. Dulles Intl Airport to Guam

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Cheap flight deals from Dulles Intl to Guam

Cheapest flights from Dulles Intl to Guam
Explore the most affordable flight options available from Dulles Intl to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Sun 12/218:15 amIAD - GUM

1 stop19h 45mUnited Airlines

Tue 12/237:20 pmGUM - IAD

1 stop35h 20mUnited Airlines

Deal found 12/17

$3,149

Fri 12/198:15 amIAD - GUM

1 stop19h 45mUnited Airlines

Mon 12/297:40 amGUM - IAD

2 stops28h 45mUnited Airlines

Deal found 12/15

$4,117

Sat 12/208:15 amIAD - GUM

1 stop19h 45mUnited Airlines

Mon 12/227:20 pmGUM - IAD

1 stop35h 20mUnited Airlines

Deal found 12/17

$4,312

Fri 12/193:38 pmIAD - GUM

2 stops40h 27mDelta

Sun 12/281:00 amGUM - IAD

2 stops37h 27mDelta

Deal found 12/15

$17,513

Best flights from Dulles Intl to Guam
Discover carefully curated flight deals from Dulles Intl to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Sun 4/1910:05 pmIAD - GUM

2 stops30h 00mUnited Airlines

Thu 4/307:05 amGUM - IAD

2 stops25h 20mUnited Airlines

Deal found 12/16

$1,918

Tue 2/177:32 pmIAD - GUM

2 stops36h 33mDelta

Wed 2/251:00 amGUM - IAD

2 stops38h 24mDelta

Deal found 12/16

$1,933

Mon 5/47:00 amIAD - GUM

2 stops42h 15mDelta

Wed 5/135:00 pmGUM - IAD

2 stops37h 29mDelta

Deal found 12/16

$1,933

Tue 2/1712:20 pmIAD - GUM

1 stop25h 00mUnited Airlines

Thu 2/267:40 amGUM - IAD

1 stop38h 36mUnited Airlines

Deal found 12/16

$1,973

Thu 3/127:00 amIAD - GUM

2 stops26h 05mDelta

Wed 3/181:00 amGUM - IAD

2 stops29h 40mDelta

Deal found 12/16

$1,933

Sat 4/116:00 amIAD - GUM

2 stops22h 05mUnited Airlines

Sat 4/187:05 amGUM - IAD

2 stops23h 24mUnited Airlines

Deal found 12/17

$2,018

Mon 1/197:05 amIAD - GUM

2 stops25h 00mDelta

Mon 2/21:00 amGUM - IAD

2 stops38h 24mDelta

Deal found 12/16

$2,078

Last-minute flights from Dulles Intl to Guam
Discover last-minute flight deals from Dulles Intl to Guam. Data last updated December 18, 2025 and is based on user searches.

Sun 12/218:15 amIAD - GUM

1 stop19h 45mUnited Airlines

Tue 12/237:20 pmGUM - IAD

1 stop35h 20mUnited Airlines

Deal found 12/17

$3,149

Mon 1/58:15 amIAD - GUM

1 stop19h 45mUnited Airlines

Mon 1/127:40 amGUM - IAD

2 stops23h 55mUnited Airlines

Deal found 12/17

$2,528

Mon 1/126:20 amIAD - GUM

2 stops25h 45mDelta

Wed 1/141:00 amGUM - IAD

2 stops37h 10mDelta

Deal found 12/16

$2,798

Fri 1/167:00 amIAD - GUM

2 stops25h 05mDelta

Thu 1/221:00 amGUM - IAD

2 stops37h 10mDelta

Deal found 12/17

$2,178

Fri 1/166:03 amIAD - GUM

2 stops22h 02mUnited Airlines

Fri 1/237:40 amGUM - IAD

2 stops24h 05mUnited Airlines

Deal found 12/17

$2,328

Mon 1/197:05 amIAD - GUM

2 stops25h 00mDelta

Mon 2/21:00 amGUM - IAD

2 stops38h 24mDelta

Deal found 12/16

$2,078

Mon 1/198:15 amIAD - GUM

1 stop19h 50mUnited Airlines

Sun 2/17:20 pmGUM - IAD

1 stop35h 20mUnited Airlines

Deal found 12/16

$2,239

Mon 1/197:30 amIAD - GUM

2 stops24h 35mDelta

Sat 1/311:00 amGUM - IAD

2 stops30h 46mDelta

Deal found 12/16

$2,428

One-way flights from Dulles Intl to Guam
Search for one-way flight options from Dulles Intl to Guam. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Tue 2/177:05 amIAD - GUM

3 stops53h 20mMultiple Airlines

Deal found 12/16

$712

Mon 2/167:05 amIAD - GUM

3 stops53h 55mMultiple Airlines

Deal found 12/16

$866

Mon 2/1610:10 pmIAD - GUM

2 stops29h 55mUnited Airlines

Deal found 12/16

$1,711

Tue 2/1712:20 pmIAD - GUM

1 stop25h 00mUnited Airlines

Deal found 12/16

$1,723

Find flight deals from Dulles Intl to Guam

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,933 (Delta)
One-way from	$712 (Kiwi.com)
Popular in	April
Cheapest in	February
Average price	$2,696

Provider with most accurate pricing for Washington, D.C. (WAS)-Tamuning Guam Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Tamuning Guam Intl flights.

Search Deals

From Washington, D.C. Dulles Intl to Guam

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Guam

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($427 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($110 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Guam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Sun 4/19

10:05 pm-6:05 pm

2 stops30h 00m

Tamuning Guam Intl

Thu 4/30

7:05 am-6:25 pm

2 stops25h 20m

$1,918

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Tue 2/17

7:32 pm-11:05 pm

2 stops36h 33m

Tamuning Guam Intl

Wed 2/25

1:00 am-12:24 am

2 stops38h 24m

$1,933

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Mon 5/4

7:00 am-3:15 pm

2 stops42h 15m

Tamuning Guam Intl

Wed 5/13

5:00 pm-4:29 pm

2 stops37h 29m

$1,933

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Thu 3/12

7:00 am-11:05 pm

2 stops26h 05m

Tamuning Guam Intl

Wed 3/18

1:00 am-4:40 pm

2 stops29h 40m

$1,933

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Tue 2/17

12:20 pm-4:20 am

1 stop25h 00m

Tamuning Guam Intl

Thu 2/26

7:40 am-7:16 am

1 stop38h 36m

$1,973

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Sat 4/11

6:00 am-6:05 pm

2 stops22h 05m

Tamuning Guam Intl

Sat 4/18

7:05 am-4:29 pm

2 stops23h 24m

$2,018

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Mon 1/19

7:05 am-11:05 pm

2 stops25h 00m

Tamuning Guam Intl

Mon 2/2

1:00 am-12:24 am

2 stops38h 24m

$2,078

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Tue 2/17

7:05 am-3:25 am

3 stops53h 20m

$712

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Mon 2/16

7:05 am-4:00 am

3 stops53h 55m

$866

Washington, D.C.Tamuning

IAD - GUM

IADGUM

Washington, D.C. Dulles Intl

Tue 2/17

7:13 pm-7:05 pm

2 stops32h 52m

$1,711

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 11 results

Best time to book a flight from Dulles Intl to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from Dulles Intl 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, D.C. Dulles Intl Airport to Guam

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Guam

Peruse reviews from past customers who have flown with United Airlines from Washington, D.C. Dulles Intl Airport to Guam to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

United Airlines

7.4

Good

9,091 reviews

United Airlines

7.4

Good

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

How long is the flight from Washington, D.C. Dulles Intl Airport to Guam?
A quick flight from Washington, D.C. Dulles Intl Airport to Guam can take about 30h. United Airlines provides one of the quickest options available for as low as $1,918. There are 7899 mi between Washington, D.C. Dulles Intl Airport 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 Dulles Intl to Guam that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Guam.
Can I find deals for business class flights from Dulles Intl to Guam?
Yes. Cheapflights offers flight deals from Dulles Intl 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Guam

Dulles Intl to Sydney flights

Dulles Intl to Melbourne flights

Reagan-National to Sydney flights

Dulles Intl to Auckland flights

Baltimore to Sydney flights

Reagan-National to Melbourne flights

Baltimore to Melbourne flights

Baltimore to Auckland flights

Reagan-National to Auckland flights

Dulles Intl to Avalon flights

Dulles Intl to Brisbane flights

Reagan-National to Brisbane flights

Dulles Intl to Perth flights

Dulles Intl to Nadi flights

Reagan-National to Perth flights

Baltimore to Brisbane flights

Dulles Intl to Christchurch flights

Baltimore to Nadi flights

Baltimore to Perth flights

Baltimore to Christchurch flights

Reagan-National to Nadi flights

Reagan-National to Christchurch flights

Dulles Intl to Papeete flights

Baltimore to Papeete flights

Dulles Intl to Queenstown flights

Dulles Intl to Adelaide flights

Reagan-National to Papeete flights

Dulles Intl to Tamuning flights

Baltimore to Queenstown flights

Dulles Intl to Canberra flights

Baltimore to Tamuning flights

Reagan-National to Queenstown flights

Baltimore to Canberra flights

Reagan-National to Canberra flights

Baltimore to Avalon flights

Baltimore to Adelaide flights

Reagan-National to Tamuning flights

Dulles Intl to Coolangatta flights

Reagan-National to Wellington flights

Baltimore to Wellington flights

Dulles Intl to Koror flights

Reagan-National to Vaitape flights

Reagan-National to Hobart flights

Dulles Intl to Rarotonga flights

Dulles Intl to Wellington flights

Baltimore to Hobart flights

Reagan-National to Adelaide flights

Dulles Intl to Cairns flights

Reagan-National to Coolangatta flights

Top airline flying from Dulles Intl to Guam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$2,020	Average$2,357	FlexibilityNo cancel fee	On-time69%

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$712+ Cheap flights from Dulles Intl (IAD) 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 2/17. 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 Dulles Intl to Guam

Cheapest flights from Dulles Intl to GuamExplore the most affordable flight options available from Dulles Intl to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Dulles Intl to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Dulles Intl to Guam

Keep the following information in mind while searching for Dulles Intl to Guam flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Guam that are best for you.

Best time to book a flight from Dulles Intl to Guam

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Guam

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 December 18, 2025.

Peruse reviews from past customers who have flown with United Airlines from Washington, D.C. Dulles Intl Airport to Guam to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Guam?

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

How can I find direct flights from Dulles Intl to Guam?

Can I find deals for business class flights from Dulles Intl 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 Dulles Intl to Guam

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Top airline flying from Dulles Intl to Guam

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Cheapest flights from Dulles Intl to Guam
Explore the most affordable flight options available from Dulles Intl to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.