Cheap flights from South Korea to the United States from $312

In general, November is the cheapest month to fly from South Korea to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $508. If you aren’t able to travel during the month of November, then book flights to United States from South Korea during February instead. Flights to United States in February, while not as cheap as those in November, still average around $608.

According to our data, Tuesday is the cheapest day to fly to United States from South Korea. The lowest ticket price found for a Tuesday departure recently was $739. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $780. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $535. Try not to purchase tickets in the morning because they tend to be around $821. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Incheon Intl to San Francisco for the best South Korea - United States flight prices

You are more likely to see cheaper flights to United States from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $862 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from South Korea for as low as $686 on momondo.

There are 4 cabin classes available to choose from on South Korea to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

AIR PREMIA, United Airlines, and Alaska Airlines are the most popular carriers operating from South Korea to United States

Asiana Airlines, AIR PREMIA and Korean Air are the top three most popular airlines that fly to United States from South Korea according to our data. Asiana Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 10 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between South Korea and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 151 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, AIR PREMIA have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

The number of flights available between South Korea and United States is 17 per day as of March 2026. The most frequent departure time is 9:00PM, with 49% of daily flights leaving in the evening.

As of March 2026, there are 125 flights per week flying from South Korea to United States. The most common day of the week flights depart is Sat, with 42% of flights taking off on this day.