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$2,177+ Cheap flights from Dulles Intl (IAD) to Ulsan (USN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — USN
feb. 27 — mar. 61
jue. 2/27
jue. 3/6
1 adult, Economy
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Cheap flight deals from Dulles Intl to Ulsan

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Ulsan (USN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$2,177
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$1,721
Provider with most accurate pricing for Washington, D.C. (WAS)-Busan Gimhae flight deals.
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From Washington, D.C. Dulles Intl to Ulsan
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Highest demand for flights based on searches. 13% potential increase in price ($317 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Dulles Intl to Ulsan

Cheapest flights from Dulles Intl to Ulsan
Explore the most affordable flight options available from Dulles Intl to Ulsan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 22, 2025.

This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/1610:35 amIAD - USN
3 stops33h 15mMultiple Airlines
dom. 3/234:00 pmUSN - IAD
3 stops31h 50mMultiple Airlines
Deal found 2/21$2,177

Find flights from Dulles Intl to Ulsan within your budget

Customize your flight search to find flights from Dulles Intl to Ulsan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 22, 2025.

Fly from

Dulles Intl

Fly to

Ulsan

Route

Depart

Return

Price

Washington, D.C.Ulsan

IAD - USN

IADUSN

Washington, D.C. Dulles Intl

dom. 3/16

10:35 am-8:50 am

3 stops33h 15m

Ulsan

dom. 3/23

4:00 pm-10:50 am

3 stops31h 50m

$2,177

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Best time to book a flight from Dulles Intl to Ulsan

Have a flexible travel schedule? Discover the best time to fly to Ulsan from Dulles Intl 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.

Travel insights for flights from Dulles Intl to Ulsan

Get recent, data-driven insights about flights from Dulles Intl to Ulsan including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from IAD to USN?

Find hourly flight availability from Dulles Intl to Ulsan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 22, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 44% on flights from Washington, D.C. Dulles Intl Airport to Ulsan by exploring options for tickets in the morning.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Ulsan?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Ulsan. Price data was last updated on February 16, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Ulsan flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ulsan by month

Plan your trip to Ulsan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ulsan ranges from 1.2 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Ulsan when rainfall is around 1.2 in.

Temperature in Ulsan by month

Plan your trip to Ulsan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ulsan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Ulsan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ulsan from Washington, D.C. Dulles Intl?

    Ulsan (USN) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Ulsan. You should not have trouble finding flights to Ulsan from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Ulsan airport from Washington, D.C. Dulles Intl. It is only a 4.4 mi journey from Ulsan (USN) to Ulsan’s city center.

  • Can I find deals for flights from Dulles Intl to Ulsan that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Ulsan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Ulsan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Ulsan.

  • Can I find deals for business class flights from Dulles Intl to Ulsan?

    Yes. Cheapflights offers flight deals from Dulles Intl to Ulsan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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