How long is the flight from Washington, D.C. Reagan-National Airport to Guam?

A quick flight from Washington, D.C. Reagan-National Airport to Guam can take about 21h 20m. United Airlines provides one of the quickest options available for as low as $1,918. Washington, D.C. Reagan-National Airport and Guam are separated by a distance of 7920 mi. This flight may include one or multiple 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 DCA to GU?

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

Can I find deals for flights from Reagan-National to Guam that include hotel bookings?

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

How can I find direct flights from Reagan-National to Guam?

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

Can I find deals for business class flights from Reagan-National to Guam?

Yes. Cheapflights offers flight deals from Reagan-National 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.

$741+ Flights from Washington, D.C. Reagan-National Airport to Guam

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Cheap flight deals from Reagan-National to Guam

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

Sun 12/216:00 amDCA - GUM

2 stops22h 00mUnited Airlines

Tue 12/237:20 pmGUM - DCA

2 stops40h 39mUnited Airlines

Deal found 12/17

$3,002

Sat 12/206:00 amDCA - GUM

2 stops22h 00mUnited Airlines

Mon 12/227:20 pmGUM - DCA

2 stops40h 39mUnited Airlines

Deal found 12/16

$3,501

Best flights from Reagan-National to Guam
Discover carefully curated flight deals from Reagan-National 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.

Mon 3/97:30 amDCA - GUM

2 stops21h 20mUnited Airlines

Tue 3/177:25 amGUM - DCA

2 stops25h 21mUnited Airlines

Deal found 12/16

$1,918

Tue 2/177:30 pmDCA - GUM

2 stops36h 35mDelta

Wed 2/251:00 amGUM - DCA

2 stops36h 33mDelta

Deal found 12/16

$1,933

Sun 4/197:59 pmDCA - GUM

2 stops32h 06mUnited Airlines

Thu 4/307:05 amGUM - DCA

2 stops23h 51mUnited Airlines

Deal found 12/16

$1,918

Mon 5/47:50 pmDCA - GUM

2 stops32h 15mUnited Airlines

Wed 5/137:05 amGUM - DCA

2 stops21h 51mUnited Airlines

Deal found 12/16

$1,918

Thu 1/156:05 amDCA - GUM

2 stops26h 00mDelta

Wed 1/211:00 amGUM - DCA

2 stops36h 00mDelta

Deal found 12/16

$2,203

Sat 4/1110:30 amDCA - GUM

2 stops27h 55mUnited Airlines

Sat 4/187:05 amGUM - DCA

2 stops29h 09mUnited Airlines

Deal found 12/17

$2,042

Mon 1/196:00 amDCA - GUM

2 stops26h 05mDelta

Sat 1/311:00 amGUM - DCA

2 stops26h 00mDelta

Deal found 12/16

$2,428

Sat 6/138:30 amDCA - GUM

2 stops29h 50mUnited Airlines

Tue 6/237:05 amGUM - DCA

2 stops23h 51mUnited Airlines

Deal found 12/17

$2,092

Sun 5/316:30 amDCA - GUM

2 stops21h 35mUnited Airlines

Sat 6/271:00 pmGUM - DCA

2 stops21h 38mUnited Airlines

Deal found 12/16

$2,141

Fri 1/306:00 amDCA - GUM

2 stops22h 05mUnited Airlines

Fri 2/67:40 amGUM - DCA

3 stops29h 57mUnited Airlines

Deal found 12/16

$2,328

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

Sat 12/206:00 amDCA - GUM

2 stops22h 00mUnited Airlines

Mon 12/227:20 pmGUM - DCA

2 stops40h 39mUnited Airlines

Deal found 12/16

$3,501

Sun 12/216:00 amDCA - GUM

2 stops22h 00mUnited Airlines

Tue 12/237:20 pmGUM - DCA

2 stops40h 39mUnited Airlines

Deal found 12/17

$3,002

Mon 1/56:00 amDCA - GUM

2 stops22h 00mUnited Airlines

Mon 1/127:40 amGUM - DCA

2 stops22h 19mUnited Airlines

Deal found 12/17

$2,528

Thu 1/156:05 amDCA - GUM

2 stops26h 00mDelta

Wed 1/211:00 amGUM - DCA

2 stops36h 00mDelta

Deal found 12/16

$2,203

Mon 1/196:00 amDCA - GUM

2 stops26h 05mDelta

Sat 1/311:00 amGUM - DCA

2 stops26h 00mDelta

Deal found 12/16

$2,428

Fri 1/306:05 amDCA - GUM

2 stops41h 30mDelta

Thu 2/51:00 amGUM - DCA

2 stops36h 33mDelta

Deal found 12/16

$2,178

Fri 1/306:00 amDCA - GUM

2 stops22h 05mUnited Airlines

Fri 2/67:40 amGUM - DCA

3 stops29h 57mUnited Airlines

Deal found 12/16

$2,328

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

Tue 2/178:00 amDCA - GUM

3 stops52h 25mMultiple Airlines

Deal found 12/16

$741

Mon 2/167:59 pmDCA - GUM

2 stops32h 06mUnited Airlines

Deal found 12/16

$1,711

Find flight deals from Reagan-National to Guam

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,918 (United Airlines)
One-way from	$741 (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.

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

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From Washington, D.C. Reagan-National to Guam

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One-way flight from Washington, D.C. Reagan-National 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. Reagan-National Airport to Guam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Mon 3/9

7:30 am-6:50 pm

2 stops21h 20m

Tamuning Guam Intl

Tue 3/17

7:25 am-6:46 pm

2 stops25h 21m

$1,918

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Sun 4/19

7:59 pm-6:05 pm

2 stops32h 06m

Tamuning Guam Intl

Thu 4/30

7:05 am-4:56 pm

2 stops23h 51m

$1,918

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Mon 5/4

7:50 pm-6:05 pm

2 stops32h 15m

Tamuning Guam Intl

Wed 5/13

7:05 am-2:56 pm

2 stops21h 51m

$1,918

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Tue 2/17

7:30 pm-11:05 pm

2 stops36h 35m

Tamuning Guam Intl

Wed 2/25

1:00 am-10:33 pm

2 stops36h 33m

$1,933

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Sat 4/11

10:30 am-4:25 am

2 stops27h 55m

Tamuning Guam Intl

Sat 4/18

7:05 am-10:14 pm

2 stops29h 09m

$2,042

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Sat 6/13

8:30 am-4:20 am

2 stops29h 50m

Tamuning Guam Intl

Tue 6/23

7:05 am-4:56 pm

2 stops23h 51m

$2,092

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Sun 5/31

6:30 am-6:05 pm

2 stops21h 35m

Tamuning Guam Intl

Sat 6/27

1:00 pm-8:38 pm

2 stops21h 38m

$2,141

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Thu 1/15

6:05 am-11:05 pm

2 stops26h 00m

Tamuning Guam Intl

Wed 1/21

1:00 am-10:00 pm

2 stops36h 00m

$2,203

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Fri 1/30

6:00 am-7:05 pm

2 stops22h 05m

Tamuning Guam Intl

Fri 2/6

7:40 am-10:37 pm

3 stops29h 57m

$2,328

Washington, D.C.Tamuning

DCA - GUM

DCAGUM

Washington, D.C. Reagan-National

Mon 1/19

6:00 am-11:05 pm

2 stops26h 05m

Tamuning Guam Intl

Sat 1/31

1:00 am-12:00 pm

2 stops26h 00m

$2,428

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 13 results

Best time to book a flight from Reagan-National to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from Reagan-National 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. Reagan-National Airport to Guam

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

Reviews of airlines servicing Guam

Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Guam, such as United Airlines. Reviews also offer insight into each airline's 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. Reagan-National Airport to Guam?
A quick flight from Washington, D.C. Reagan-National Airport to Guam can take about 21h 20m. United Airlines provides one of the quickest options available for as low as $1,918. Washington, D.C. Reagan-National Airport and Guam are separated by a distance of 7920 mi. This flight may include one or multiple stops.
Can I find deals for flights from Reagan-National to Guam that include hotel bookings?
Yes. In addition to deals on Reagan-National to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Guam.
Can I find deals for business class flights from Reagan-National to Guam?
Yes. Cheapflights offers flight deals from Reagan-National 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 Reagan-National to Guam

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Reagan-National to Coolangatta flights

Top airline flying from Reagan-National to Guam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$2,010	Average$2,277	FlexibilityNo cancel fee	On-time69%

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$741+ Cheap flights from Reagan-National (DCA) 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.

Find cheap flights from Reagan-National to Guam with Cheapflights

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Cheap flight deals from Reagan-National to Guam

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

Find flight deals from Reagan-National to Guam

Keep the following information in mind while searching for Reagan-National 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. Reagan-National Airport to Guam that are best for you.

Best time to book a flight from Reagan-National to Guam

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National 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.

Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Guam, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National Airport to Guam?

Can I find deals for flights from Reagan-National to Guam that include hotel bookings?

How can I find direct flights from Reagan-National to Guam?

Can I find deals for business class flights from Reagan-National 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 Reagan-National to Guam

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

Top airline flying from Reagan-National to Guam

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