Fare anomaly · SFO → ICN
Cheap flights from San Francisco to Seoul
AeroQuant™ models a retail fare of $1,045 against a lowest legal alternative of $624 for 2026-12-04 (economy, per traveler): a 40.3% spread. Figures are modeled estimates.
Winning strategy: POS Currency Arbitrage
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SFO–ICN at a glance
- Distance
- 5,646 mi / 9,086 km
- Typical nonstop time
- about 11.5 hours
- Best booking window
- 46 to 62 days before departure
How SFO–ICN gets cheaper
- Regional point-of-sale pricing: the same flight is often filed at different tariffs in different countries and currencies. How it works.
- Split-hub routing: pricing SFO to a competitive hub and that hub to ICN as separate tickets can undercut the nonstop, with the risk that separate tickets are not protected if you miss the connection.
- Timing: Revenue management releases inventory in sequential booking buckets, initially offering deep‑discounted seats on the feeder leg, then gradually tightening availability as the departure date approaches.
- Nearby airports: departing from OAK (Oakland Intl), SJC (Mineta San Jose), or arriving at GMP (Seoul Gimpo), can change the fare.
Frequently asked questions
How much can I save on San Francisco to Seoul flights?
For 2026-12-04, our model puts the standard US retail fare near $1045 per traveler and the lowest legal alternative near $624, a saving of about $421 (40.3%). These are estimates; confirm the final price before you book.
When is the best time to book SFO to ICN?
46 to 62 days before departure. Wednesday and Saturday red-eye departures tend to be cheapest.
How far is San Francisco from Seoul, and how long is the flight?
The great-circle distance between SFO and ICN is about 5,646 miles (9,086 km). A nonstop flight takes roughly 11.5 hours.
Are there other airports I can use?
Near San Francisco: OAK (Oakland Intl), SJC (Mineta San Jose). Near Seoul: GMP (Seoul Gimpo). Prices can differ noticeably between airports in the same metro area.