Flights Seattle → Seoul
As of October 2026, economy flights from Seattle to Seoul have a typical range USD 620–2661, median USD 946. Full range across all 206 offers: USD 426–10221. We analyzed 206 offers from 29 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: Seattle → Seoul
Based on 206 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Seattle → Seoul
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Air Canada | — | — | — |
| Cathay Pacific | — | — | — |
| Alaska Airlines | Included | — | — |
| Korean Air | — | — | — |
| Delta | Included | USD 35 | — |
| United | Included | USD 35 | — |
| Turkish Airlines | Included | Included | — |
| Hainan Airlines | Included | Included | — |
| WestJet | — | USD 30 | — |
| Japan Airlines | Included | Included | — |
| EVA Air | Included | Included | — |
| American Airlines | Included | USD 35 | — |
| ANA (All Nippon Airways) | Included | Included | — |
| Philippine Airlines | Included | Included | — |
| Qatar Airways | Included | Included | — |
| Air China | Included | Included | — |
| Emirates | Included | Included | — |
| Condor | Included | USD 35 | — |
| Air France | Included | USD 35 | — |
| KLM | Included | USD 35 | — |
| Lufthansa | Included | USD 35 | — |
| Etihad Airways | Included | Included | — |
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 Seattle to Seoul cost?
Based on 206 offers · October 2026
Seattle to Seoul flights ranged from USD 426 to USD 10221 across 206 offers analyzed in October 2026. The chart below shows how prices distributed across all 206 offers.
These 206 offers (October 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 USD 735 and USD 1485
What hidden fees do Seattle to Seoul flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Seattle to Seoul routes. The breakdown below is based on 206 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| AC | 33 | 2% |
| CX | 50 | 8% |
| AS | 43 | 3% |
| KE | 15 | 1% |
| DL | 32 | 3% |
| UA | 45 | 4% |
| TK | 10 | 1% |
| HU | 30 | 4% |
| WS | 39 | 3% |
| JL | 0 | 0% |
| BR | 15 | 2% |
| AA | 45 | 4% |
| NH | 0 | 0% |
| PR | 15 | 1% |
| QR | 20 | 2% |
| CA | 30 | 2% |
| EK | 20 | 1% |
| DE | 45 | 3% |
| AF | 47 | 2% |
| KL | 47 | 2% |
| LH | 45 | 2% |
| EY | 15 | 0% |
Cathay Pacific: base ~USD 573 + fees USD 50 = ~USD 623 total. Turkish Airlines: base ~USD 769 + fees USD 10 = ~USD 779 total.
Cathay Pacific's USD 50 ancillary fees narrow the gap with Turkish Airlines's lower-fee model — the USD 196 base difference shrinks to USD 156 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.CX charges 5.0x more in ancillary fees than TK on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Seattle to Seoul?
29 airlines flew Seattle to Seoul 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.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Air Canada | 1 | — | 478 | n/a |
 Cathay Pacific | 2 | 553–628 | 591 | n/a |
 Cathay Pacific | 14 | 539–818 | 623 | 50 (8%) |
 Korean Air | 14 | 606–1250 | 625 | 15 (2%) |
 United Airlines | 16 | 647–2130 | 647 | 45 (7%) |
 United | 1 | — | 647 | n/a |
 Hainan Airlines | 1 | — | 730 | 30 (4%) |
 Turkish Airlines | 2 | 707–851 | 779 | 10 (1%) |
 Alaska | 14 | 748–4526 | 780 | n/a |
 Japan Airlines | 3 | 810–872 | 840 | 0 (0%) |
 EVA Air | 9 | 818–1077 | 851 | 15 (2%) |
 Delta Air Lines | 22 | 709–1058 | 871 | 32 (4%) |
 American | 1 | — | 880 | n/a |
 Delta | 4 | 709–906 | 906 | n/a |
 Air Canada | 16 | 484–2517 | 1005 | 33 (3%) |
 Philippine Airlines | 2 | 990–1052 | 1021 | 15 (1%) |
 American Airlines | 2 | 896–1214 | 1055 | 45 (4%) |
 Alaska Airlines | 35 | 711–3938 | 1203 | 43 (4%) |
 WestJet | 11 | 952–1599 | 1224 | 39 (3%) |
 Qatar Airways | 9 | 1042–1264 | 1262 | 20 (2%) |
 Air China | 1 | — | 1342 | 30 (2%) |
 Condor | 2 | 1383–1411 | 1397 | 45 (3%) |
 ANA | 3 | 1081–5242 | 1617 | 0 (0%) |
 Air France | 5 | 1485–4663 | 1740 | 47 (3%) |
 Emirates | 4 | 1445–2010 | 1812 | 20 (1%) |
 Lufthansa | 5 | 2647–2675 | 2659 | 45 (2%) |
 KLM | 3 | 1760–2884 | 2860 | 47 (2%) |
 Etihad Airways | 1 | — | 4690 | 15 (0%) |
 JAL | 3 | 2683–10215 | 10189 | n/a |
Where do the best Seattle → Seoul 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: Seattle to Seoul flights
- Full-service carriers on Seattle–Seoul cost 1.3x more than budget airlines (USD 1575 vs USD 1224 median; overall median USD 946).
- CX charges 5.0x more in ancillary fees than TK — USD 50 vs USD 10 avg per booking.
- The same route priced USD 235 apart depending on where it was booked — the lowest median was USD 770. 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 Seattle to Seoul cost?
- Based on 206 offers analyzed, Seattle to Seoul flights range from USD 426 to USD 10221, with a median price of USD 946. Search for your specific dates →
- What hidden fees should I expect on Seattle to Seoul flights?
- On average, ancillary fees (bags, seat selection) add USD 34 to the base fare on Seattle to Seoul flights. See itemized fees for your itinerary →
- Which airline is cheapest on Seattle to Seoul including all fees?
- Air Canada has the lowest median fare on Seattle to Seoul at USD 478 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Seattle–Seoul 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 USD 770. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Seattle to Seoul routes?
- Seattle to Seoul has 29 airlines competing, creating a price range from USD 426 to USD 10221 across 206 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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