Travel with Axel,
get the best price.

Route overview: Seattle to Seoul (ICN) flight deals

Seattle → Seoul

Dec 21, 2026 · return Dec 26, 2026

SEA → ICN1 adulteconomyRound trip

10 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Sat, Dec 26

Alaska Airlines
12:40 pmSEA
11h 55m
Nonstop
5:35 pm+1ICN
Alaska Airlines
8:00 pmICN
10h 10m
Nonstop
1:10 pmSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
12:35 pmSEA
12h 10m
Nonstop
5:45 pm+1ICN
Delta Air Lines
6:45 pmICN
10h 6m
Nonstop
11:51 amSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Korean Air
12:10 amSEA
12h 10m
Nonstop
5:20 am+1ICN
Korean Air
9:20 pmICN
9h 50m
Nonstop
2:10 pmSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Korean Air
11:00 amSEA
11h 55m
Nonstop
3:55 pm+1ICN
Korean Air
9:20 pmICN
9h 50m
Nonstop
2:10 pmSEA

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Sat, Dec 26

United Airlines
7:30 pmSEA
16h 40m
SFO · 1h 18m
5:10 am+2ICN
United Airlines
6:00 pmICN
15h 22m
SFO · 2h 20m
4:22 pmSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
7:15 amSEA
17h 25m
SFO · 1h 59m
5:40 pm+1ICN
Delta Air Lines
6:45 pmICN
10h 6m
Nonstop
11:51 amSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
5:59 pmSEA
17h 21m
LAX · 1h 17m
4:20 am+2ICN
Delta Air Lines
6:45 pmICN
10h 6m
Nonstop
11:51 amSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
9:07 amSEA
15h 38m
YVR · 2h 35m
5:45 pm+1ICN
Delta Air Lines
6:45 pmICN
10h 6m
Nonstop
11:51 amSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
8:11 amSEA
19h 9m
HNL · 1h 53m
8:20 pm+1ICN
Delta Air Lines
6:45 pmICN
10h 6m
Nonstop
11:51 amSEA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
5:30 amSEA
17h 50m
SLC · 2h 16m
4:20 pm+1ICN
Delta Air Lines
6:45 pmICN
10h 6m
Nonstop
11:51 amSEA

Round-trip total · 1 adult · Taxes included

Make this trip yours

SEA ⇄ ICN

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Alaska Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeDec 20, 2026 → Dec 25, 2026Dec 22, 2026 → Dec 27, 2026
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Seattle to Seoul (ICN) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 → 2026-12-26Alaska AirlinesAS119 / AS120$1350.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Delta Air LinesDL197 / DL196$1525.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Korean AirKE48 / KE47$1600.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26United AirlinesUA737 + OZ211 / UA892 + UA433$1275.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Korean AirKE42 / KE47$1600.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Delta Air LinesDL3034 + KE24 / DL196$1425.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Delta Air LinesDL2861 + KE12 / DL196$1425.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Delta Air LinesDL3742 + KE72 / DL196$1425.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Delta Air LinesDL351 + KE52 / DL196$1425.002026-10-29T01:15:29Z
2026-12-21 → 2026-12-26Delta Air LinesDL1128 + DL173 / DL196$1425.002026-10-29T01:15:29Z

2026-12-21 → 2026-12-26 · $1350.00

  • Alaska Airlines AS119: SEA 2026-12-21 12:40:00 → ICN 2026-12-22 17:35:00; nonstop; 715 minutes. Local airport times.
  • Alaska Airlines AS120: ICN 2026-12-26 20:00:00 → SEA 2026-12-26 13:10:00; nonstop; 610 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1525.00

  • Delta Air Lines DL197: SEA 2026-12-21 12:35:00 → ICN 2026-12-22 17:45:00; nonstop; 730 minutes. Local airport times.
  • Delta Air Lines DL196: ICN 2026-12-26 18:45:00 → SEA 2026-12-26 11:51:00; nonstop; 606 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1600.00

  • Korean Air KE48: SEA 2026-12-21 00:10:00 → ICN 2026-12-22 05:20:00; nonstop; 730 minutes. Local airport times.
  • Korean Air KE47: ICN 2026-12-26 21:20:00 → SEA 2026-12-26 14:10:00; nonstop; 590 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1275.00

  • United Airlines UA737 / OZ211: SEA 2026-12-21 19:30:00 → ICN 2026-12-23 05:10:00; 1 stop(s) via SFO; 1000 minutes. Local airport times.
    • UA737: SEA 2026-12-21 19:30:00 → SFO 2026-12-21 21:42:00; layover at SFO: 78 minutes.
    • OZ211: SFO 2026-12-21 23:00:00 → ICN 2026-12-23 05:10:00.
  • United Airlines UA892 / UA433: ICN 2026-12-26 18:00:00 → SEA 2026-12-26 16:22:00; 1 stop(s) via SFO; 922 minutes. Local airport times.
    • UA892: ICN 2026-12-26 18:00:00 → SFO 2026-12-26 11:45:00; layover at SFO: 140 minutes.
    • UA433: SFO 2026-12-26 14:05:00 → SEA 2026-12-26 16:22:00.

2026-12-21 → 2026-12-26 · $1600.00

  • Korean Air KE42: SEA 2026-12-21 11:00:00 → ICN 2026-12-22 15:55:00; nonstop; 715 minutes. Local airport times.
  • Korean Air KE47: ICN 2026-12-26 21:20:00 → SEA 2026-12-26 14:10:00; nonstop; 590 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1425.00

  • Delta Air Lines DL3034 / KE24: SEA 2026-12-21 07:15:00 → ICN 2026-12-22 17:40:00; 1 stop(s) via SFO; 1045 minutes. Local airport times.
    • DL3034: SEA 2026-12-21 07:15:00 → SFO 2026-12-21 09:46:00; layover at SFO: 119 minutes.
    • KE24: SFO 2026-12-21 11:45:00 → ICN 2026-12-22 17:40:00.
  • Delta Air Lines DL196: ICN 2026-12-26 18:45:00 → SEA 2026-12-26 11:51:00; nonstop; 606 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1425.00

  • Delta Air Lines DL2861 / KE12: SEA 2026-12-21 17:59:00 → ICN 2026-12-23 04:20:00; 1 stop(s) via LAX; 1041 minutes. Local airport times.
    • DL2861: SEA 2026-12-21 17:59:00 → LAX 2026-12-21 20:43:00; layover at LAX: 77 minutes.
    • KE12: LAX 2026-12-21 22:00:00 → ICN 2026-12-23 04:20:00.
  • Delta Air Lines DL196: ICN 2026-12-26 18:45:00 → SEA 2026-12-26 11:51:00; nonstop; 606 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1425.00

  • Delta Air Lines DL3742 / KE72: SEA 2026-12-21 09:07:00 → ICN 2026-12-22 17:45:00; 1 stop(s) via YVR; 938 minutes. Local airport times.
    • DL3742: SEA 2026-12-21 09:07:00 → YVR 2026-12-21 11:25:00; layover at YVR: 155 minutes.
    • KE72: YVR 2026-12-21 14:00:00 → ICN 2026-12-22 17:45:00.
  • Delta Air Lines DL196: ICN 2026-12-26 18:45:00 → SEA 2026-12-26 11:51:00; nonstop; 606 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1425.00

  • Delta Air Lines DL351 / KE52: SEA 2026-12-21 08:11:00 → ICN 2026-12-22 20:20:00; 1 stop(s) via HNL; 1149 minutes. Local airport times.
    • DL351: SEA 2026-12-21 08:11:00 → HNL 2026-12-21 12:32:00; layover at HNL: 113 minutes.
    • KE52: HNL 2026-12-21 14:25:00 → ICN 2026-12-22 20:20:00.
  • Delta Air Lines DL196: ICN 2026-12-26 18:45:00 → SEA 2026-12-26 11:51:00; nonstop; 606 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $1425.00

  • Delta Air Lines DL1128 / DL173: SEA 2026-12-21 05:30:00 → ICN 2026-12-22 16:20:00; 1 stop(s) via SLC; 1070 minutes. Local airport times.
    • DL1128: SEA 2026-12-21 05:30:00 → SLC 2026-12-21 08:34:00; layover at SLC: 136 minutes.
    • DL173: SLC 2026-12-21 10:50:00 → ICN 2026-12-22 16:20:00.
  • Delta Air Lines DL196: ICN 2026-12-26 18:45:00 → SEA 2026-12-26 11:51:00; nonstop; 606 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Seattle (SEA) to Seoul (ICN) · Dec 21, 2026 · return Dec 26, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Seattle to Seoul (ICN) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.