Cheap flights from San Francisco (SFO) to Ulsan (USN)
Find cheap flights from San Francisco to Ulsan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Ulsan
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 March 25, 2025.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Popular in | December |
Cheapest in | March |
Average price | $947 |
- Most accurate provider: When it comes to deals on San Francisco-Ulsan flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on San Francisco-Ulsan flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from San Francisco-Ulsan flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Ulsan flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Ulsan flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Ulsan
Have a flexible travel schedule? Discover the best time to fly to Ulsan from San Francisco with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Ulsan
What is the cheapest time of day to fly from SFO to USN?
Find hourly flight availability from San Francisco 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 March 25, 2025.
One of the essential ways to save on airfare from San Francisco to Ulsan is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 62% on airfare.
What is the cheapest day to fly from San Francisco to Ulsan?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Ulsan. Price data was last updated on March 23, 2025.
Travelers seeking maximum savings on their San Francisco to Ulsan flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons 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).