$1,273 Cheap Flights from Guam (GUM) to Washington (IAD)

View $1,273 flight on Sun, Sep 21, 2025Opens in a new window

Popular airlines from Barrigada - A.B. Won Pat International Airport (GUM) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Guam to Washington (GUM-IAD)

Prices were available within the past 7 days and start at $1,273 for one-way flights and $1,577 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 15 - Mon, Nov 3
GUM
Guam
IAD
Washington
$1,577 Roundtrip, found 2 days ago
$1,577
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Guam to Washington, returning Mon, Nov 3, priced at $1,577 found 2 days ago
United
Mon, Nov 17 - Tue, Nov 25
GUM
Guam
IAD
Washington
$1,581 Roundtrip, found 4 days ago
$1,581
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 17 from Guam to Washington, returning Tue, Nov 25, priced at $1,581 found 4 days ago
United
Mon, Nov 17 - Tue, Nov 25
GUM
Guam
IAD
Washington
$1,584 Roundtrip, found 4 days ago
$1,584
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 17 from Guam to Washington, returning Tue, Nov 25, priced at $1,584 found 4 days ago
United
Tue, Sep 23 - Tue, Sep 30
GUM
Guam
IAD
Washington
$1,584 Roundtrip, found 4 hours ago
$1,584
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Sep 23 from Guam to Washington, returning Tue, Sep 30, priced at $1,584 found 4 hours ago
United
Mon, Nov 17 - Tue, Nov 25
GUM
Guam
IAD
Washington
$1,589 Roundtrip, found 4 days ago
$1,589
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 17 from Guam to Washington, returning Tue, Nov 25, priced at $1,589 found 4 days ago
United
Mon, Nov 17 - Tue, Nov 25
GUM
Guam
IAD
Washington
$1,590 Roundtrip, found 4 days ago
$1,590
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 17 from Guam to Washington, returning Tue, Nov 25, priced at $1,590 found 4 days ago
United
Tue, Sep 23 - Tue, Sep 30
GUM
Guam
IAD
Washington
$1,590 Roundtrip, found 4 hours ago
$1,590
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Sep 23 from Guam to Washington, returning Tue, Sep 30, priced at $1,590 found 4 hours ago
United
Tue, Sep 23 - Tue, Sep 30
GUM
Guam
IAD
Washington
$1,592 Roundtrip, found 4 hours ago
$1,592
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Sep 23 from Guam to Washington, returning Tue, Sep 30, priced at $1,592 found 4 hours ago
United
Mon, Nov 17 - Tue, Nov 25
GUM
Guam
IAD
Washington
$1,596 Roundtrip, found 4 days ago
$1,596
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 17 from Guam to Washington, returning Tue, Nov 25, priced at $1,596 found 4 days ago
Delta
Sun, Oct 19 - Tue, Nov 4
GUM
Guam
IAD
Washington
$1,617 Roundtrip, found 2 days ago
$1,617
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Oct 19 from Guam to Washington, returning Tue, Nov 4, priced at $1,617 found 2 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Washington Dulles Intl. IAD. Cheapest option available. Average driving time to city center is 36 minutes. Flights from $1,827
IAD
Washington Dulles Intl.
Cheapest
Average driving time to city center36 min
Flights from $1,827
Flights from Guam (GUM) to Washington (IAD)
Origin airport
A.B. Won Pat Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Delta, United
Roundtrip price
$1,577
Distance
7903 mi

Guam to Washington Flights

The cheapest times to fly from Guam to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Guam to Washington are during the month of October. You can find some of the cheapest flights from Guam to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Guam to Washington

Sunday is one of the best days to book for cheap flights from Guam to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Guam to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Guam to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,273 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Guam to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Guam to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $1,273 or cheap return flight from $1,577 from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from GUM to IAD is October, when there's less demand. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from GUM to IAD. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD)?
Direct flights from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GUM to IAD?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your flight from GUM to IAD right before your journey is usually more expensive. However, if you're flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a GUM to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a GUM to IAD flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place will take the hassle out of planning your trip. Simply pick your flights and select from our wide range of hotels, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from A.B. Won Pat Intl. Airport (GUM) to Washington Dulles Intl. Airport (IAD)?
In most cases, you can cancel or reschedule your GUM to IAD flight. However, additional fees may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further details, visit our Customer Service portal.

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*Available to One Key members.