IAD - GUM

$1,163 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 8/2. 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
$1,969
United Airlines
Mon 10/5Fri 10/16
IAD - GUM • 2 stops
Cheapest one-way
$1,163
Multiple Airlines
Sun 8/2
IAD - GUM • 3 stops
Top airlines
United Airlines
Cheapest • from $1,969 (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
When to travel
October
Cheapest • 100% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Mon, Oct 5 - Fri, Oct 16
United Airlines Logo
10:10 pm - 6:05 pm
IAD
-
GUM
29h 55m
2 stops
United Airlines Logo
7:10 am - 12:30 am
GUM
-
IAD
31h 20m
2 stops
$1,969United Airlines
Tue, Sep 1 - Tue, Sep 15
Delta Logo
7:10 am - 11:55 pm
IAD
-
GUM
26h 45m
2 stops
Delta Logo
5:20 pm - 11:22 pm
GUM
-
IAD
44h 02m
2 stops
$1,983Delta
Mon, Oct 5 - Fri, Oct 16
United Airlines Logo
12:35 pm - 4:20 am
IAD
-
GUM
25h 45m
1 stop
United Airlines Logo
7:10 am - 4:18 pm
GUM
-
IAD
23h 08m
2 stops
$1,994United Airlines
Tue, Sep 1 - Tue, Sep 15
United Airlines Logo
12:50 pm - 4:20 am
IAD
-
GUM
25h 30m
1 stop
United Airlines Logo
7:35 pm - 3:35 pm
GUM
-
IAD
34h 00m
1 stop
$2,002United Airlines
Thu, Aug 27 - Wed, Sep 2
Delta Logo
7:26 pm - 11:55 pm
IAD
-
GUM
38h 29m
2 stops
Delta Logo
2:00 am - 12:34 am
GUM
-
IAD
36h 34m
2 stops
$2,033Delta
Sat, Sep 12 - Sat, Sep 19
Delta Logo
6:00 am - 3:35 pm
IAD
-
GUM
43h 35m
2 stops
Delta Logo
5:20 pm - 12:32 am
GUM
-
IAD
45h 12m
2 stops
$2,083Delta
Sat, Sep 12 - Sat, Sep 19
United Airlines Logo
10:10 pm - 6:05 pm
IAD
-
GUM
29h 55m
2 stops
United Airlines Logo
7:35 pm - 3:35 pm
GUM
-
IAD
34h 00m
1 stop
$2,094United Airlines
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
12:50 pm - 4:20 am
IAD
-
GUM
25h 30m
1 stop
United Airlines Logo
7:30 pm - 3:50 pm
GUM
-
IAD
34h 20m
1 stop
$2,102United Airlines
Sat, Sep 5 - Fri, Sep 11
Delta Logo
5:47 pm - 3:35 pm
IAD
-
GUM
31h 48m
2 stops
Delta Logo
2:00 am - 11:51 pm
GUM
-
IAD
35h 51m
2 stops
$2,133Delta
Wed, Aug 12 - Tue, Oct 6
Delta Logo
7:10 am - 11:55 pm
IAD
-
GUM
26h 45m
2 stops
Delta Logo
5:20 pm - 11:02 pm
GUM
-
IAD
43h 42m
2 stops
$2,138Delta
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 $0 (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 seasonNovember
Cheapest flight$1,163
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 3% 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 $1,163 for a one-way ticket and $1,969 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 9842 reviews
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

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.

6.0 GoodEnrique, Jun 2026
IAD - LAX
Read more United Airlines reviews

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.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

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

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

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)