Flights Seoul → San Francisco
As of September 2026, economy flights from Seoul to San Francisco have a typical range THB 19742–50636, median THB 26753. Full range across all 299 offers: THB 15976–221373. We analyzed 299 offers from 44 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Seoul → San Francisco
Based on 299 offers · September 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Seoul → San Francisco
Add-on pricing from the cheapest available offer per airline · September 2026 · THB
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| United | Included | THB 1165 | — |
| Air Canada | — | THB 6367 | — |
| Asiana Airlines | Included | Included | — |
| Philippine Airlines | — | — | — |
| Zipair | Included | THB 99843 | — |
| American Airlines | Included | THB 1165 | — |
| Peach Aviation | — | THB 5193 | — |
| 7C | — | — | — |
| TW | — | — | — |
| Air Busan | Included | — | — |
| EVA Air | — | — | — |
| AIR PREMIA | THB 3461 | THB 3894 | — |
| Eastar Jet | Included | THB 5791 | — |
| China Airlines | — | — | — |
| Vietnam Airlines | Included | Included | — |
| Korean Air | — | — | — |
| Air Seoul | Included | — | — |
| Jin Air | Included | THB 3927 | — |
| Delta | Included | THB 1165 | — |
| Air China | Included | Included | — |
| ANA | — | Included | — |
| China Eastern | Included | Included | — |
| China Southern | Included | Included | — |
| Singapore Airlines | Included | Included | — |
| Japan Airlines | Included | Included | — |
| Air India | Included | Included | — |
| Qatar Airways | Included | Included | — |
| Cathay Pacific | Included | Included | — |
| Turkish Airlines | Included | Included | — |
| Ethiopian Airlines | Included | Included | — |
| Emirates | Included | Included | — |
| KLM | Included | THB 1165 | — |
| Air France | Included | THB 1165 | — |
| VJ | — | — | — |
| Etihad Airways | Included | Included | — |
| Lufthansa | Included | THB 1165 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Seoul to San Francisco cost?
Based on 299 offers · September 2026
Seoul to San Francisco flights ranged from THB 15976 to THB 221373 across 299 offers analyzed in September 2026. The chart below shows how prices distributed across all 299 offers.
These 299 offers (September 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between THB 22171 and THB 37683
What hidden fees do Seoul to San Francisco flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Seoul to San Francisco routes. The breakdown below is based on 299 offers analyzed in September 2026.
| Carrier | Avg fee (THB) | % of base fare |
|---|---|---|
| UA | 998 | 5% |
| AC | 1835 | 4% |
| OZ | 726 | 2% |
| PR | 499 | 2% |
| ZG | 116484 | 671% |
| AA | 1498 | 7% |
| MM | 31255 | 157% |
| 7C | 291209 | 1378% |
| TW | 374411 | 1817% |
| BX | 166405 | 738% |
| BR | 499 | 2% |
| YP | 7621 | 37% |
| ZE | 5791 | 28% |
| CI | 499 | 2% |
| VN | 333 | 1% |
| KE | 660 | 2% |
| RS | 1664050 | 7657% |
| LJ | 170332 | 778% |
| DL | 915 | 4% |
| CA | 998 | 4% |
| NH | 0 | 0% |
| MU | 998 | 4% |
| CZ | 998 | 3% |
| SQ | 666 | 2% |
| JL | 0 | 0% |
| AI | 333 | 1% |
| QR | 666 | 2% |
| CX | 1664 | 3% |
| TK | 333 | 1% |
| ET | 333 | 1% |
| EK | 666 | 1% |
| KL | 1564 | 3% |
| AF | 1564 | 1% |
| VJ | 3328101 | 6925% |
| EY | 499 | 1% |
| LH | 1498 | 1% |
VietJet Air: base ~THB -3280043 + fees THB 3328101 = ~THB 48058 total. Etihad Airways: base ~THB 48672 + fees THB 499 = ~THB 49171 total.
VietJet Air's THB 3328101 ancillary fees narrow the gap with Etihad Airways's lower-fee model — the THB 3328715 base difference shrinks to THB 1113 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Seoul to San Francisco?
44 airlines flew Seoul to San Francisco in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
Even on the cheapest airline (United Airlines), fares ranged THB 15992–22887 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (THB) | Median (THB) | Fees (THB) |
|---|---|---|---|---|
 United Airlines | 12 | 15992–22887 | 16141 | 998 (6%) |
 Zipair | 1 | — | 17351 | 116484 (671%) |
 Peach Aviation | 11 | 18138–22531 | 19303 | 31255 (162%) |
 T'way Air | 4 | 19280–22322 | 20102 | 374411 (1863%) |
 Jeju Air | 8 | 18471–24322 | 20185 | 291209 (1443%) |
 YP | 1 | — | 20568 | 7621 (37%) |
 ZE | 3 | 18964–22531 | 20668 | 5791 (28%) |
 American Airlines | 6 | 19312–20871 | 20871 | 1498 (7%) |
 EVA Air | 10 | 20179–26295 | 21034 | 499 (2%) |
 RS | 1 | — | 21733 | 1664050 (7657%) |
 Jin Air | 2 | — | 21899 | 170332 (778%) |
 Delta Air Lines | 18 | 22171–22596 | 22198 | 915 (4%) |
 BX | 8 | 20355–24631 | 22714 | 166405 (733%) |
 China Eastern | 8 | 23959–32589 | 24326 | 998 (4%) |
 Air China | 14 | 22251–30837 | 24677 | 998 (4%) |
 China Airlines | 5 | 21327–40279 | 25225 | 499 (2%) |
 Korean Air | 7 | 22099–27923 | 26225 | n/a |
 Philippine Airlines | 14 | 16815–48151 | 26356 | 499 (2%) |
 Singapore Airlines | 4 | 26490–27958 | 26490 | 666 (3%) |
 Asiana Airlines | 27 | 20408–74870 | 26825 | 726 (3%) |
 ANA | 5 | 19469–27923 | 27923 | n/a |
 Asiana Airlines | 5 | 19503–27923 | 27923 | n/a |
 Japan Airlines | 20 | 27082–43387 | 30485 | 0 (0%) |
 Air India | 1 | — | 30621 | 333 (1%) |
 Korean Air | 28 | 22408–74168 | 32522 | 660 (2%) |
 Qatar Airways | 2 | 31516–34346 | 32931 | 666 (2%) |
 China Southern | 6 | 28905–42249 | 34439 | 998 (3%) |
 Cathay Pacific | 7 | 34603–97385 | 34603 | 1664 (5%) |
 Vietnam Airlines | 3 | 24612–46604 | 37312 | 333 (1%) |
 ANA | 17 | 24342–105216 | 38301 | 0 (0%) |
 Air Canada | 10 | 27755–62599 | 42880 | 1835 (4%) |
 Turkish Airlines | 2 | 37910–48853 | 43382 | 333 (1%) |
 Ethiopian Airlines | 1 | — | 43432 | 333 (1%) |
 AM | 2 | 45113–46852 | 45983 | n/a |
 KLM | 5 | 45652–46464 | 45989 | 1564 (3%) |
 HY | 1 | — | 47725 | n/a |
 VietJet Air | 1 | — | 48058 | 3328101 (6925%) |
 Etihad Airways | 2 | 48971–49371 | 49171 | 499 (1%) |
 DV | 3 | 40822–49981 | 49955 | n/a |
 Lufthansa | 3 | 52234–187798 | 53497 | 1498 (3%) |
 Emirates | 3 | 47511–58611 | 55310 | 666 (1%) |
 B7 | 2 | — | 63746 | n/a |
 ZH | 1 | — | 122507 | n/a |
 Air France | 5 | 46343–156723 | 155021 | 1564 (1%) |
Where do the best Seoul → San Francisco prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Seoul to San Francisco flights
- Seoul–San Francisco had 299 offers analyzed. Median price: THB 26753.
- VJ charges 10000.0x more in ancillary fees than ET — THB 3328101 vs THB 333 avg per booking.
- The same route priced THB 11652 apart depending on where it was booked — the lowest median was THB 20871. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Seoul to San Francisco cost?
- Based on 299 offers analyzed, Seoul to San Francisco flights range from THB 15976 to THB 221373, with a median price of THB 26753. Search for your specific dates →
- What hidden fees should I expect on Seoul to San Francisco flights?
- On average, ancillary fees (bags, seat selection) add THB 41116 to the base fare on Seoul to San Francisco flights. See itemized fees for your itinerary →
- Which airline is cheapest on Seoul to San Francisco including all fees?
- United Airlines has the lowest median fare on Seoul to San Francisco at THB 16141 (median across 12 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Seoul–San Francisco flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was THB 20871. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Seoul to San Francisco routes?
- Seoul to San Francisco has 44 airlines competing, creating a price range from THB 15976 to THB 221373 across 299 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
44 airlines compete on this route — we check every one
Find flights for my datesNew route — be among the first to track this itinerary
Building with flight data? Power your app or agent with LetsFG
The same multi-source search behind this page — every airline and the major booking sites, deduplicated and ranked — is available to your app or AI agent. Natural-language or structured queries, live prices, zero price bias.
Try the free sandbox — no card →Free sandbox, instant fake results · email for a key · Bearer-token auth · MCP, Python & JS SDKs · letsfg.co/developers