Premium Economy offers 42-43 inches of legroom, wider seats, and priority boarding.
Economy class provides 35 inches of legroom, ensuring comfort on long flights.

Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $570 (CrystalTravel) |
One-way from | $329 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,633 |
Good round-trip deal | $337 or less |
Good one-way deal | $352 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Thu 1/22
11:45 pm-5:40 am
Nonstop12h 55m
Incheon Intl
Thu 1/29
12:45 pm-6:30 am
Nonstop10h 45m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Mon 2/23
2:30 pm-8:30 pm
Nonstop13h 00m
Incheon Intl
Sun 3/15
6:55 pm-1:30 pm
Nonstop10h 35m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Thu 1/15
10:30 am-4:15 pm
Nonstop12h 45m
Incheon Intl
Sat 1/24
6:00 pm-11:35 am
Nonstop10h 35m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Thu 3/12
10:30 am-3:15 pm
Nonstop12h 45m
Incheon Intl
Mon 3/23
5:00 pm-11:35 am
Nonstop10h 35m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Thu 2/26
11:45 pm-5:40 am
Nonstop12h 55m
Incheon Intl
Fri 3/20
11:45 am-6:30 am
Nonstop10h 45m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Sun 3/1
11:45 pm-5:40 am
Nonstop12h 55m
Incheon Intl
Sat 3/14
5:00 pm-11:35 am
Nonstop10h 35m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Tue 2/24
10:30 am-4:15 pm
Nonstop12h 45m
Incheon Intl
Tue 3/17
11:45 am-6:30 am
Nonstop10h 45m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Sat 1/17
11:45 pm-5:40 am
Nonstop12h 55m
Incheon Intl
Sun 2/1
6:00 pm-11:35 am
Nonstop10h 35m
San FranciscoIncheon
SFO - ICN
SFOICN
San Francisco
Sat 2/28
6:30 am-6:35 pm
1 stop19h 05m
Incheon Intl
Fri 3/6
8:35 pm-10:56 pm
1 stop19h 21m
SeattleIncheon
SEA - ICN
SEAICN
Seattle/Tacoma Intl
Sat 1/17
11:25 am-4:30 pm
Nonstop12h 05m
Incheon Intl
Wed 1/28
8:05 pm-1:20 pm
Nonstop10h 15m
Currently, November is the cheapest month in which you can book a flight from USA to Seoul (average of $181). Flying from USA to Seoul in June is currently the most expensive (average of $531). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s optimal to fly from USA to Seoul in the afternoon. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the morning.
Travelers seeking maximum savings on their USA to Seoul flight should consider departing on Wednesday 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.
The most flights from US0 to SEL are scheduled on a Monday (21 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (14 on average).
About 0% of weekly flights between United States and Seoul have experienced delays in the past year, with the average delay time being 0 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Overall
Boarding
Crew
Comfort
Food
Entertainment
Reviews
Chris,Mar 2025
SEA - ICN
Overall
Boarding
Crew
Comfort
Food
Entertainment
Reviews
Chris,Mar 2025
SEA - ICN
Overall
Boarding
Crew
Comfort
Food
Entertainment
Reviews
Chris,Mar 2025
SEA - ICN
Overall
Boarding
Crew
Comfort
Food
Entertainment
Reviews
Chris,Mar 2025
SEA - ICN
Overall
Boarding
Crew
Comfort
Food
Entertainment
Reviews
Chris,Mar 2025
SEA - ICN
Overall
Boarding
Crew
Comfort
Food
Entertainment
Reviews
Chris,Mar 2025
SEA - ICN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$181 | Average$1,172 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$347 | Average$615 | FlexibilityNo cancel fee | On-time49% | |
| Cheapest$372 | Average$757 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$478 | Average$853 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$578 | Average$611 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$599 | Average$686 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$622 | Average$711 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$630 | Average$1,347 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$651 | Average$848 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$674 | Average$1,025 | FlexibilityNo cancel fee | On-time75% |