How long is the flight from San Francisco to Seoul?

Non-stop flights on SFO → ICN are typically around 12 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

Which airlines fly from San Francisco to Seoul?

The main carriers on this route are Korean Air, United, Asiana. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

When is the cheapest time to fly from San Francisco to Seoul?

Historically the lowest fares land in January, February, May. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

How far ahead should I book San Francisco to Seoul?

Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

Can I book directly on destination.com?

The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

SFO → ICN

San Francisco to Seoul flights.

Live cached fares on San Francisco (SFO) → Seoul (ICN), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flying time
~12h non-stop
Airlines
Korean Air, United, Asiana
Cheapest months
January, February, May

Flex dates · cheapest nearby

Loading prices…

Read our best-time-to-book guide for SFO → ICN →Target price, booking window, weekday pattern.

See 30-day price history for SFO → ICN →Median fare, lows, and best-day patterns.

No cached fares for exactly 2026-07-23 → 2026-07-30. Showing recent fares on SFO → ICN — pick a different date in the calendar above or run a live search.

San Francisco → Seoul · 28 fares12-month low · $383

Cached from Travelpayouts · filter & sort below

Showing 28 of 28 results

Cheapest
YP · YP 112
OutboundSFO → ICNSat, Jul 11 · 10:30 PM· 12h 40m· Non-stop
$383
one-way
Book →
Cheapest
YP · YP 112
OutboundSFO → ICNMon, Jul 13 · 10:30 PM· 12h 40m· Non-stop
$383
one-way
Book →
Cheapest
YP · YP 112
OutboundSFO → ICNThu, Jul 30 · 12:00 AM· 12h 40m· Non-stop
$383
one-way
Book →
United Airlines · UA 893
OutboundSFO → ICNSun, Jul 12 · 5:40 PM· 12h 20m· Non-stop
$408
one-way
Book →
United Airlines · UA 893
OutboundSFO → ICNTue, Jul 14 · 5:40 PM· 12h 20m· Non-stop
$408
one-way
Book →
YP · YP 112
OutboundSFO → ICNTue, Jul 21 · 12:00 AM· 12h 40m· Non-stop
$435
one-way
Book →
United Airlines · UA 805
OutboundSFO → ICNWed, Jul 8 · 6:55 AM· 12h 25m· Non-stop
$446
one-way
Book →
YP · YP 112
OutboundSFO → ICNSat, Jul 25 · 12:00 AM· 12h 40m· Non-stop
$447
one-way
Book →
United Airlines · UA 893
OutboundSFO → ICNMon, Jul 6 · 5:40 PM· 12h 20m· Non-stop
$456
one-way
Book →
Air Canada · AC 573
OutboundSFO → ICNSun, Jul 5 · 2:30 AM· 14h 35m· 1 stop
$597
one-way
Book →
China Eastern · MU 590
OutboundSFO → ICNThu, Jul 2 · 7:00 PM· 17h 10m· 2 stops
$605
one-way
Book →
Air Canada · AC 8558
OutboundSFO → ICNFri, Jul 3 · 7:50 PM· 15h 47m· 2 stops
$629
one-way
Book →
United Airlines · UA 893
OutboundSFO → ICNTue, Dec 1 · 6:30 PM· 12h 45m· Non-stop
ReturnICN ← SFOTue, Dec 8 · 3:45 AM· 10h 45m· Non-stop
$671
total round-trip
Book →
YP · YP 112
OutboundSFO → ICNTue, Oct 20 · 12:00 AM· 12h 40m· Non-stop
ReturnICN ← SFOFri, Oct 30 · 9:55 AM· 10h 35m· Non-stop
$694
total round-trip
Book →
YP · YP 112
OutboundSFO → ICNTue, Sep 8 · 12:00 AM· 12h 40m· Non-stop
ReturnICN ← SFOMon, Sep 21 · 10:15 AM· 11h· Non-stop
$705
total round-trip
Book →
United Airlines · UA 698
OutboundSFO → ICNSun, Sep 13 · 4:15 AM· 21h 23m· 1 stop
ReturnICN ← SFOSat, Oct 3 · 7:50 AM· 10h 50m· Non-stop
$753
total round-trip
Book →
United Airlines · UA 893
OutboundSFO → ICNThu, Jun 11 · 5:40 PM· 12h 20m· Non-stop
ReturnICN ← SFOSat, Jun 27 · 2:30 AM· 11h· Non-stop
$772
total round-trip
Book →
United Airlines · UA 893
OutboundSFO → ICNTue, Jun 16 · 5:40 PM· 12h 20m· Non-stop
ReturnICN ← SFOWed, Jun 24 · 2:30 AM· 11h· Non-stop
$793
total round-trip
Book →
United Airlines · UA 805
OutboundSFO → ICNThu, Aug 6 · 6:55 AM· 12h 25m· Non-stop
ReturnICN ← SFOThu, Sep 3 · 7:50 AM· 11h 10m· Non-stop
$802
total round-trip
Book →
United Airlines · UA 805
OutboundSFO → ICNFri, Aug 14 · 6:55 AM· 12h 25m· Non-stop
ReturnICN ← SFOTue, Aug 18 · 2:30 AM· 11h· Non-stop
$805
total round-trip
Book →
YP · YP 112
OutboundSFO → ICNWed, Jan 20 · 10:30 PM· 13h· Non-stop
ReturnICN ← SFOWed, Feb 3 · 9:55 AM· 10h 35m· Non-stop
$843
total round-trip
Book →
United Airlines · UA 649
OutboundSFO → ICNMon, Mar 15 · 5:50 AM· 21h 39m· 1 stop
ReturnICN ← SFOSat, Mar 27 · 9:00 AM· 10h 40m· Non-stop
$877
total round-trip
Book →
Air Canada · AC 8558
OutboundSFO → ICNSun, Jul 12 · 7:50 PM· 15h 47m· 2 stops
ReturnICN ← SFOSun, Jul 26 · 8:45 AM· 12h 27m· 1 stop
$945
total round-trip
Book →
Air Canada · AC 8558
OutboundSFO → ICNSat, Jul 11 · 7:50 PM· 15h 47m· 2 stops
ReturnICN ← SFOFri, Jul 24 · 8:45 AM· 14h 42m· 2 stops
$957
total round-trip
Book →
Air Canada · AC 8558
OutboundSFO → ICNSun, Jul 12 · 7:50 PM· 15h 47m· 2 stops
ReturnICN ← SFOSat, Jul 25 · 8:45 AM· 14h 42m· 2 stops
$957
total round-trip
Book →
United Airlines · UA 805
OutboundSFO → ICNSat, Jun 13 · 6:55 AM· 12h 25m· Non-stop
ReturnICN ← SFOFri, Jun 19 · 2:30 AM· 11h· Non-stop
$1,151
total round-trip
Book →
Air Canada · AC 8558
OutboundSFO → ICNFri, Jun 12 · 7:50 PM· 16h 26m· 2 stops
ReturnICN ← SFOMon, Jun 29 · 8:45 AM· 12h 27m· 1 stop
$1,249
total round-trip
Book →
Alaska Airlines · AS 1314
OutboundSJC → ICNFri, Jun 26 · 1:17 PM· 13h 42m· 1 stop
ReturnICN ← SJCThu, Jul 2 · 9:40 PM· 19h 10m· 2 stops
$1,368
total round-trip
Book →

Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Oakland (OAK) → Seoul (ICN)

nearby origin

San Jose (SJC) → Seoul (ICN)

nearby origin

San Francisco (SFO) → Seoul (GMP)

nearby destination

About San Francisco → Seoul

Korean Air + United dominate. ICN → onward Asia is faster and cheaper than connecting via HKG or NRT.

Typical non-stop flying time is around 12 hours. Major carriers on this route include Korean Air, United, Asiana. Fares are usually cheapest in January, February, May — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

Month-by-month price guide: San Francisco to Seoul

Live cheapest round-trip fare cached on SFO → ICN for each of the next 12 months. Tap any month and run a live search to confirm.

Jun
Shoulder
from $772
Jul
Peak
from $945
Aug
Shoulder
from $802
Sep
Low
from $705
Oct
Low
from $694
Nov
No data
Dec
Low
from $671
Jan
Shoulder
from $843
Feb
No data
Mar
Peak
from $877
Apr
No data
May
No data

Cheapest next 12 months: December from $671 round-trip. Run a live search →

Booking window tip

Long-haul fares are most predictable when booked 10-16 weeks ahead. Inside six weeks expect sharp increases, especially in premium cabins. If you're paying with miles, search 330+ days ahead when award inventory first loads.

Price drop alerts

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Where to stay

Once you’ve booked the flight, pick a Seoul neighbourhood.

See where to stay in Seoul →

Questions, answered

How long is the flight from San Francisco to Seoul?
Non-stop flights on SFO → ICN are typically around 12 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from San Francisco to Seoul?
The main carriers on this route are Korean Air, United, Asiana. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from San Francisco to Seoul?
Historically the lowest fares land in January, February, May. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book San Francisco to Seoul?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

Other ways to reach Seoul

If your plans are flexible on the origin, these alternate departure airports also serve Seoul on the routes we track.

Other popular routes

Keep planning

Complete your Seoul trip

Trip plannerSeoul one-stop planTours, transfers, packages, and events for Seoul in one place.StaysWhere to stay in SeoulNeighborhood-by-neighborhood picks with live nightly rates.ExperiencesThings to do in SeoulCurated sights, food, nightlife, and tours across every district.Getting thereCheap flights to SeoulUS gateway fares with the months each route bottoms out.NeighborhoodsSeoul by districtLongform breakdowns of where locals eat, drink, and sleep.When to goBest time to visit South KoreaMonth-by-month verdicts on weather, crowds, and prices.