IAD - GUM

$712 Find Cheap Flights from Washington Dulles Airport to Tamuning

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Tamuning departing on 2/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Tamuning

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Tamuning, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Tamuning, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,918
United Airlines
Sun 4/19Thu 4/30
IAD - GUM • 2 stops
Cheapest one-way
$712
Multiple Airlines
Tue 2/17
IAD - GUM • 3 stops
Top airlines
United Airlines
Cheapest • from $1,918 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Tamuning (IAD-GUM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Tamuning that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Tamuning

Sun, Apr 19 - Thu, Apr 30
United Airlines Logo
10:05 pm - 6:05 pm
IAD
-
GUM
30h 00m2 stops
United Airlines Logo
7:05 am - 6:25 pm
GUM
-
IAD
25h 20m2 stops
$1,918United Airlines
Thu, Mar 12 - Wed, Mar 18
Delta Logo
7:00 am - 11:05 pm
IAD
-
GUM
26h 05m2 stops
Delta Logo
1:00 am - 11:49 pm
GUM
-
IAD
36h 49m2 stops
$1,933Delta
Tue, Feb 17 - Thu, Feb 26
United Airlines Logo
12:20 pm - 4:20 am
IAD
-
GUM
25h 00m1 stop
United Airlines Logo
7:40 am - 7:16 am
GUM
-
IAD
38h 36m1 stop
$1,973United Airlines
Sun, Apr 19 - Thu, Apr 30
United Airlines Logo
12:30 pm - 4:25 am
IAD
-
GUM
25h 55m1 stop
United Airlines Logo
7:05 am - 1:27 pm
GUM
-
IAD
20h 22m2 stops
$1,987United Airlines
Sat, Apr 11 - Sat, Apr 18
United Airlines Logo
6:00 am - 6:05 pm
IAD
-
GUM
22h 05m2 stops
United Airlines Logo
7:05 am - 4:29 pm
GUM
-
IAD
23h 24m2 stops
$2,018United Airlines
Sat, Apr 11 - Sat, Apr 18
United Airlines Logo
8:25 am - 6:05 pm
IAD
-
GUM
19h 40m1 stop
United Airlines Logo
7:30 pm - 3:40 pm
GUM
-
IAD
34h 10m1 stop
$2,037United Airlines
Mon, Jan 19 - Mon, Feb 2
Delta Logo
7:05 am - 11:05 pm
IAD
-
GUM
25h 00m2 stops
Delta Logo
1:00 am - 12:24 am
GUM
-
IAD
38h 24m2 stops
$2,078Delta
Sat, Jun 13 - Tue, Jun 23
United Airlines Logo
12:50 pm - 4:20 am
IAD
-
GUM
25h 30m1 stop
United Airlines Logo
7:05 am - 4:13 pm
GUM
-
IAD
23h 08m2 stops
$2,087United Airlines
Sun, May 31 - Sat, Jun 27
United Airlines Logo
10:06 pm - 6:05 pm
IAD
-
GUM
29h 59m2 stops
United Airlines Logo
7:30 pm - 3:50 pm
GUM
-
IAD
34h 20m1 stop
$2,091United Airlines
Sun, May 31 - Sat, Jun 27
United Airlines Logo
6:30 am - 6:05 pm
IAD
-
GUM
21h 35m2 stops
United Airlines Logo
1:00 pm - 8:33 pm
GUM
-
IAD
21h 33m2 stops
$2,094United Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Tamuning flights

Get data-powered insights and trends into flights from Dulles Intl to Tamuning to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Tamuning?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Tamuning clicked on KAYAK for each day over the last 12 months.

When flying from Washington Dulles Airport to Tamuning, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Sundays and the most expensive ones on Tuesdays.

Good to know

Cheapest flight$712
Flight from Washington Dulles Airport to Tamuning

When to book flights from Dulles Intl to Tamuning

Are your dates flexible? Find out the best times to travel from Dulles Intl to Tamuning based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Tamuning flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Tamuning?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Tamuning was $712 for a one-way ticket and $1,918 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Tamuning?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Tamuning.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Tamuning?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Tamuning?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Tamuning.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Tamuning?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Tamuning.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Tamuning?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Tamuning from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Tamuning?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Tamuning with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and GUM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Tamuning?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Tamuning from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Tamuning

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Tamuning. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Tamuning? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9091 reviews
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
Airline reviews

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

4.0 OkayAnonymous, Dec 2025
IAD - GRU
Read more United Airlines reviews

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Everything you need to know for your flight from Dulles Intl to Tamuning

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