What is the cheapest month to book a flight from Guam to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Guam to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Guam to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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 GU to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Guam to Washington, D.C. Dulles Intl Airport as you normally would.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Guam to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,565+ Flights from Guam to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Guam to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Guam to Dulles Intl

Round-trip from	$1,628 (United Airlines)
One-way from	$1,436 (Delta)

From Guam to Washington, D.C. Dulles Intl

Search Deals

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

Search Deals

Find flight deals from Guam to Dulles Intl

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

Mon 11/107:10 amGUM - IAD

2 stops28h 56mUnited Airlines

Fri 5/110:05 pmIAD - GUM

2 stops30h 10mUnited Airlines

Deal found 6/14

$1,628

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

Mon 11/107:10 amGUM - IAD

2 stops28h 56mUnited Airlines

Fri 5/110:05 pmIAD - GUM

2 stops30h 10mUnited Airlines

Deal found 6/14

$1,628

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

Fri 6/205:00 pmGUM - IAD

2 stops43h 55mDelta

Deal found 6/13

$1,436

Sat 6/217:00 pmGUM - IAD

1 stop34h 45mUnited Airlines

Deal found 6/14

$1,598

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

TamuningWashington, D.C.

GUM - IAD

GUMIAD

Tamuning Guam Intl

Mon 11/10

7:10 am-9:06 pm

2 stops28h 56m

Washington, D.C. Dulles Intl

Fri 5/1

10:05 pm-6:15 pm

2 stops30h 10m

$1,628

TamuningWashington, D.C.

GUM - IAD

GUMIAD

Tamuning Guam Intl

Fri 6/20

5:00 pm-10:55 pm

2 stops43h 55m

$1,436

TamuningWashington, D.C.

GUM - IAD

GUMIAD

Tamuning Guam Intl

Sat 6/21

7:00 pm-3:45 pm

1 stop34h 45m

$1,598

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

Best time to book a flight from Guam to Dulles Intl

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

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,958 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,793 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Can I find deals for flights from Guam to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Guam to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Guam to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Guam to Dulles Intl.
Can I find deals for business class flights from Guam to Dulles Intl?
Yes. Cheapflights offers flight deals from Guam to Dulles Intl 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 Guam to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Guam to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Guam to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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

Arlington

Alexandria

Woodbridge

Tysons

Silver Spring

Linthicum Heights

Fredericksburg

Gaithersburg

Fairfax

Falls Church

Easton

Herndon

Towson

Sterling

Bowie

Rockville

Reston

National Harbor

Springfield

Manassas

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Guam to Dulles Intl

Complete your trip

Washington, D.C. Dulles Intl Airport car rentals

Washington, D.C. car rentals

Dupont Circle car rentals

Georgetown car rentals

Downtown car rentals

Capitol Hill car rentals

Foggy Bottom - West End car rentals

Southwest Waterfront car rentals

Columbia Heights car rentals

Adams Morgan car rentals

Anacostia car rentals

Shaw car rentals

Other flights to Dulles Intl

Washington, D.C. Dulles Intl Airport to Wilmington flights

Washington, D.C. Dulles Intl Airport to South Bend flights

Washington, D.C. Dulles Intl Airport to Knoxville flights

Washington, D.C. Dulles Intl Airport to Asheville flights

Washington, D.C. Dulles Intl Airport to New Haven flights

Washington, D.C. Dulles Intl Airport to Savannah flights

Washington, D.C. Dulles Intl Airport to Valparaiso, Florida flights

Washington, D.C. Dulles Intl Airport to Orlando Airport flights

Washington, D.C. Dulles Intl Airport to Dallas/Fort Worth Airport flights

Washington, D.C. Dulles Intl Airport to Tampa flights

Washington, D.C. Dulles Intl Airport to Atlanta flights

Washington, D.C. Dulles Intl Airport to Sarasota flights

Washington, D.C. Dulles Intl Airport to Jacksonville flights

Washington, D.C. Dulles Intl Airport to Nashville flights

Washington, D.C. Dulles Intl Airport to Valparaiso, Florida flights

Washington, D.C. Dulles Intl Airport to Miami flights

Washington, D.C. Dulles Intl Airport to Lancaster, Pennsylvania flights

Top airline flying from Guam to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,624	Average$2,112	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$1,436+ Cheap flights from Guam to Dulles Intl (IAD)

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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Guam to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Guam to Dulles Intl

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

Round-trip from

One-way from

Find flight deals from Guam to Dulles Intl

Cheapest flights from Guam to Dulles IntlExplore the most affordable flight options available from Guam to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2025.

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

Cheapflights Fare Finder

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

Best time to book a flight from Guam to Dulles Intl

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

Cheapflights Insights

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

Rainfall in Dulles Intl by month

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

Temperature in Dulles Intl by month

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

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Guam to Dulles Intl. 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 Guam to Dulles Intl that include hotel bookings?

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

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

What is the cheapest month to book a flight from Guam to Washington, D.C. Dulles Intl Airport?

Traveling to a place near 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 Guam to Dulles Intl

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

Top airline flying from Guam to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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