IAD - GUM

$1,192 Find Cheap Flights from Washington Dulles Airport to Tamuning - Compare and Save

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 11/10. 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

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Everything you should know

Cheapest round-trip
$1,830
Typical prices: $2,160-$2,262
Multiple Airlines
Wed 9/9Wed 9/16
IAD - GUM • 2 stops
Cheapest one-way
$1,192
Alaska Airlines
Tue 11/10
IAD - GUM • 2 stops
Top airlines
United Airlines
Cheapest • from $1,919 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Tamuning. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Tokyo (HND)
Cheapest • Avg $2,049 (round-trip)
Honolulu (HNL)
Shortest trip • 19h 35m (one-way)
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 17% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Tamuning!
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

Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
9:03 am - 2:35 pm
IAD
-
GUM
39h 32m
2 stops
Multiple Airlines Logo
4:35 pm - 11:59 pm
GUM
-
IAD
45h 24m
2 stops
$1,830Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Delta Logo
7:30 am - 2:35 pm
IAD
-
GUM
40h 05m
2 stops
Delta Logo
4:50 pm - 4:30 pm
GUM
-
IAD
38h 40m
2 stops
$1,934Delta
Wed, Dec 2 - Tue, Dec 8
United Airlines Logo
6:30 am - 7:00 pm
IAD
-
GUM
21h 30m
2 stops
United Airlines Logo
7:55 pm - 3:40 pm
GUM
-
IAD
34h 45m
1 stop
$1,943United Airlines
Wed, Dec 2 - Tue, Dec 8
United Airlines Logo
12:20 pm - 4:40 am
IAD
-
GUM
25h 20m
1 stop
United Airlines Logo
7:55 pm - 3:40 pm
GUM
-
IAD
34h 45m
1 stop
$1,952United Airlines
Wed, Oct 14 - Fri, Oct 23
United Airlines Logo
6:35 am - 6:05 pm
IAD
-
GUM
21h 30m
2 stops
United Airlines Logo
7:10 am - 4:26 pm
GUM
-
IAD
23h 16m
2 stops
$1,969United Airlines
Wed, Oct 14 - Fri, Oct 23
United Airlines Logo
12:35 pm - 4:20 am
IAD
-
GUM
25h 45m
1 stop
United Airlines Logo
7:10 am - 7:02 pm
GUM
-
IAD
25h 52m
2 stops
$1,993United Airlines
Mon, Sep 7 - Mon, Sep 14
Multiple Airlines Logo
7:00 am - 2:35 pm
IAD
-
GUM
41h 35m
2 stops
Multiple Airlines Logo
4:35 pm - 5:40 am
GUM
-
IAD
51h 05m
2 stops
$2,005Multiple Airlines
Thu, Sep 17 - Mon, Sep 28
Delta Logo
6:10 am - 3:35 pm
IAD
-
GUM
43h 25m
2 stops
Delta Logo
2:00 am - 12:41 am
GUM
-
IAD
36h 41m
2 stops
$2,079Delta
Tue, Sep 1 - Tue, Sep 15
Delta Logo
6:00 am - 11:55 pm
IAD
-
GUM
27h 55m
2 stops
Delta Logo
5:20 pm - 10:56 pm
GUM
-
IAD
43h 36m
2 stops
$2,139Delta
Tue, Sep 1 - Tue, Sep 15
Delta Logo
3:03 pm - 3:35 pm
IAD
-
GUM
34h 32m
2 stops
Delta Logo
5:20 pm - 11:23 pm
GUM
-
IAD
44h 03m
2 stops
$2,139Delta
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 is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Tamuning?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Tamuning, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Tamuning is October, where tickets cost $1,933 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $2,955 and $2,947 respectively.

Find deals

Good to know

Low season

March

Cheapest flight

$1,192
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 4% increase in price.
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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Tamuning was $1,192 for a one-way ticket and $1,830 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 10046 reviews
6.6Food
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
Airline reviews

My flight was delayed so bad i missed u it so i just said never mind

2.0 MediocreDanika, Jul 2026
IAD - EWR
Read more United Airlines reviews

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Worst service- attendants dont want to help and sat us in front of bathroom

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Overall, the flight was good. Lounge access should be with all business class tickets.

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Tamuning (GUM)