FLIGHT SAVINGS
How to save on flights from Seattle to Seoul
Our analysis of past searches finds effective ways to save on flights from Seattle to Seoul. If flights to Seoul seem too expensive right now, these alternative booking strategies can help you get a cheaper fare. Our data shows savings of 30–40% on this route.
Content
Add an extra destination after Seoul
A multicity ticket, Seattle to Seoul plus a later journey to or from a third city, sometimes prices below the plain one-way. You fly to Seoul; the second journey is a spare multicity you are free to drop, reschedule, or fit into a later trip. As with a spare return, the spare part is a whole journey on a later date, so nothing is skipped on the day and you can check a bag.
| Strategy | Spare multicity on Seattle to Seoul |
| Success rate | medium |
| Typical savings | 10–45% |
| Checked bag | Yes ✔️ |
Examples
Alaska Airlines · Economy
May 15 · 1:40 pm - 5:30 pm +1
SEA - ICN
Direct11h50m$1,514
$1,050
Spare multicityTrip 1
Fri, May 15
SEA - ICN
Trip 2
Tue, May 26
Spare multicity
ICN - PEK
Air Canada · Economy
Apr 18 · 8:00 pm - 4:05 pm +2
SEA - ICN
1 stop28h5m$893
$586
Spare multicityAir Canada · Economy
Apr 2 · 3:40 pm - 4:05 pm +2
SEA - ICN
1 stop32h25m$914
$586
Spare multicity
Book a SEA-SEL roundtrip that costs less
Airlines often price the Seattle to Seoul round-trip below the one-way, so you buy the pair and never fly the return. That is a spare return, a form of throwaway ticketing, and nothing is skipped mid-ticket: your checked bag and your outbound are unaffected. When the fare allows it, you can also reschedule or cancel the extra return.
| Strategy | Spare return on Seattle to Seoul |
| Success rate | medium |
| Typical savings | 5–10% |
| Checked bag | Yes ✔️ |
Examples
SWISS · Economy
May 15 · 1:21 pm - 7:30 am +3
SEA - ICN
2 stops50h9m$2,700
$2,094
Spare returnDepart
Fri, May 15
SEA - ICN
Return
Tue, Sep 1
Spare return
ICN - SEA
Korean Air · Economy
Apr 18 · 8:08 pm - 5:50 pm +2
SEA - ICN
1 stop29h42m$1,496
$1,142
Spare returnCathay Pacific · Economy
Apr 2 · 11:45 am - 12:40 pm +2
SEA - ICN
1 stop32h55m$1,831
$1,474
Spare return
Fly to a cheaper city and stop in Seoul
A ticket to a city beyond Seoul, routed through it, sometimes costs less than the Seoul ticket itself. You get off at the layover and skip the last flight, a hidden city (or skiplagging). It is the one method here that leaves part of the ticket unflown, so travel with a carry-on, and it cannot be used on a round-trip: a missed segment cancels everything after it. Airlines tend to curb this practice, avoid doing it too often.
| Strategy | Hidden city on Seattle to Seoul |
| Success rate | high |
| Typical savings | 30–40% |
| Checked bag | No ❌ |
Examples
Korean Air · Economy
Nov 1 · 11:00 am - 3:55 pm +1
SEA - ICN
Direct11h55mSun, Nov 1
SEA - ICN
- Spare flight
ICN - MNL
Korean Air · Economy
Sep 19 · 12:50 pm - 4:40 pm +1
SEA - ICN
Direct11h50mAir Canada · Economy
Apr 2 · 5:40 am - 4:05 pm +1
SEA - ICN
1 stop18h25m$864
$545
Hidden city
Combine your trip with other upcoming flights
If you have other trips coming up, try combining them with the Seoul one. Our multisearch engine searches several trips at once and finds ticket arrangements that cost less than the sum of their parts, such as nested or back-to-back tickets. The other trip can be to Seoul again or somewhere else entirely, and it can be months away.
Questions about saving on flights to Seoul
Can I buy a round-trip to Seoul and not fly the return?
Yes, that is a spare return: nothing on the ticket is cancelled, you simply forfeit the return. On this route the round-trip priced below the one-way on a good share of searches, saving 5–10%.
Is a hidden-city ticket safe on flights to Seoul?
Safe enough with two rules: carry-on only, since a checked bag travels to the ticketed destination, and not too often, since airlines curb it. On this route a hidden city ticket routed through Seoul priced below the Seoul fare on most searches, saving 30–40%.
Can I use a hidden-city ticket on a round trip to Seoul?
Not on a plain round-trip: skipping a segment cancels everything after it, so you would lose the return. What works is a hidden return, one multicity ticket from Seattle to Seoul and then from Seoul to a third city routed through Seattle, where you get off.
Is an open-jaw ticket cheaper than a one-way to Seoul?
Sometimes. A multicity ticket with a later journey to or from a third city, a spare multicity, can price below the plain one-way, and since the unused journey is on its own date you can check a bag. On this route it did on a good share of searches, saving 10–45%.
These saving methods are found automatically by our flight search engine. For the full picture of the strategies and their trade-offs, see our guide to Airglitch booking strategies.
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Updated on September 4, 2026