Cheap Flights from Boston (BOS) to Ulsan (USN)

Popular airlines from Boston to Ulsan (USN)

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Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Ulsan Airport (USN) cost?
Secure a cheap one-way flight or cheap return flight from Logan Intl. Airport (BOS) to Ulsan Airport (USN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Ulsan Airport (USN)?
is the most affordable month to fly from BOS to USN. Traveling during an off-peak travel window is often the key to scoring lower fares.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Ulsan Airport (USN)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from BOS to USN. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Logan Intl. Airport (BOS) to Ulsan Airport (USN)?
Nonstop flights from Logan Intl. Airport (BOS) to Ulsan Airport (USN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BOS to USN?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Ulsan Airport (USN)?
Select a flight from Logan Intl. Airport (BOS) to Ulsan Airport (USN) that leaves before 3 PM to reduce the risk of cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Ulsan Airport (USN) last-minute?
Booking your ticket from BOS to USN shortly before your getaway is usually more expensive. But if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a BOS to USN flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOS to USN flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of travel planning. Just secure your flights and choose from our wide range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Ulsan Airport (USN)?
If you reserved your BOS to USN flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
Ulsan
Distance
6898 mi

Book with confidence

Boston to Ulsan Flights

The cheapest times to fly from Boston to Ulsan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Ulsan are during the month of . You can find some of the cheapest flights from Boston to Ulsan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Ulsan

Sunday is one of the best days to book for cheap flights from Boston to Ulsan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Ulsan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Ulsan in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Ulsan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Ulsan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boston to Ulsan Flights

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*Available to One Key members.