What is the most punctual flight time for San Francisco to Ulsan flights?

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

Which airline has the best punctuality record on San Francisco to Ulsan flights?

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

What day of the week experiences the fewest flight delays on this route?

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

How often are flights from San Francisco to Ulsan delayed?

Historically, on average around 19% of flights between San Francisco and Ulsan have experienced a delay on any given week. The average delay length over the past 12 months has been 178 minutes.

When did momondo last update prices for flights from San Francisco Airport to Ulsan Airport?

Prices for flights from San Francisco Airport to Ulsan Airport are refreshed on a daily basis.

How old do you have to be to fly from San Francisco Airport to Ulsan Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Ulsan Airport.

What documentation or ID do you need to fly to Ulsan Airport?

The travel and health documents required for your trip to Ulsan Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ulsan Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$1,141 Cheap Flights from San Francisco to Ulsan in 2026/27

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12:50 pm - 8:20 amSFO San Francisco-USN Ulsan

27h 30m1 stop Incheon Intl

8:35 pm - 10:40 amUSN Ulsan-SFO San Francisco

30h 05m1 stop Seoul Gimpo Intl

$1,972Korean Air

Wed, Oct 14 - Sun, Oct 18

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

San FranciscoUlsan

SFO San Francisco - USN Ulsan

SFOUSN

San Francisco

Wed 10/14

12:50 pm-8:20 am

1 stop27h 30m

Ulsan

Sun 10/18

8:35 pm-10:40 am

1 stop30h 05m

$1,972

Cheapest one-way

Quickest one-way

San FranciscoUlsan

SFO San Francisco - USN Ulsan

SFOUSN

San Francisco

Sat 11/7

11:45 am-8:50 am

1 stop28h 05m

$1,141

San FranciscoUlsan

SFO San Francisco - USN Ulsan

SFOUSN

San Francisco

Sat 11/7

2:40 pm-7:40 pm

2 stops36h 00m

$1,146

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from San Francisco to Ulsan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Airlines

Delays

What is the cheapest airline that flies from San Francisco to Ulsan?

Korean Air is the most popular carrier operating from San Francisco to Ulsan

When to book flights from San Francisco to Ulsan

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Ulsan according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap San Francisco to Ulsan (SFO to USN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Ulsan

Best Price Found	$1,141
Fastest flight time	27h 30m
Direct flights	None

The best one-way flight to Ulsan from San Francisco in the past 72 hours is $1,141. The best round-trip flight deal from San Francisco to Ulsan found on momondo in the last 72 hours is $1,972.

The fastest flight from San Francisco to Ulsan takes 27h 30m

There are no direct flights from San Francisco to Ulsan. There are no popular flight routes from San Francisco to Ulsan.

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Frequently asked questions about flying from San Francisco to Ulsan

How far is San Francisco to Ulsan by plane?
The straight-line distance from San Francisco to Ulsan is 5601.1 mi. In terms of flight time, this usually takes a little over 27h 30m.
When did momondo last update prices for flights from San Francisco Airport to Ulsan Airport?
Prices for flights from San Francisco Airport to Ulsan Airport are refreshed on a daily basis.
How old do you have to be to fly from San Francisco Airport to Ulsan Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Ulsan Airport.
What documentation or ID do you need to fly to Ulsan Airport?
The travel and health documents required for your trip to Ulsan Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ulsan Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Ulsan?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ulsan from San Francisco.

Can I find flights from San Francisco to Ulsan with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ulsan from San Francisco which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Francisco to Ulsan?

momondo helps you find the best flight between San Francisco and Ulsan by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from San Francisco to Ulsan right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Francisco to Ulsan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.