目錄
After getting off a plane and entering a Korean airport, the real obstacle is often not Korean grammar but a row of signs reading 「입국심사」「수하물 찾는 곳」「세관」 and 「환승」. You know they concern arrival procedures, yet may not know which line to join or where to go next. At immigration, you may suddenly hear 「왜 오셨어요?」 or 「며칠 동안 머무르세요?」, and the officer may finish the next question while you are still searching for familiar words.
Most Korean used during airport arrival concerns a small number of recurring situations. Immigration asks about your purpose, length of stay, and accommodation. After baggage claim comes customs; connecting passengers look for 「환승」. The harder moments are often when a bag does not appear, directions are unclear, or staff speak too quickly. You do not need elegant, complete speeches for these situations. Being able to ask 「어디예요?」, say 「제 짐이 아직 안 나왔어요」, and request repetition is more useful than memorizing an entire airport dialogue.
Korean Airport Arrival Process: Understanding 「입국심사」「수하물」 and 「세관」
In a Korean airport, 「입국심사」 is immigration inspection, 「수하물 찾기」 is baggage claim, and 「세관」 is customs. They belong to different stages, even if all are loosely described as “entry” in another language.
In Incheon International Airport’s official arrival flow, passengers proceed to arrival declarations and immigration, collect checked baggage at the assigned carousel after immigration, and then pass through customs into the arrivals hall. The exact route may differ by terminal and passenger status.
| Airport Korean | Romanization | English Meaning |
| 입국 | ip-guk | Entry / Immigration |
| 입국심사 | ip-guk-sim-sa | Immigration Inspection |
| 출입국심사 | chu-rip-guk-sim-sa | Immigration Inspection / Entry & Departure Control |
| 외국인 | oe-gu-gin | Foreign National / Foreigner |
| 내국인 | nae-gu-gin | Korean National / Citizen |
| 여권 | yeo-kkwon | Passport |
| 입국신고서 | ip-guk-sin-go-seo | Arrival Card / Entry Declaration Form |
| 전자입국신고서 | jeon-ja-ip-guk-sin-go-seo | Electronic Arrival Card / E-Arrival Card |
| 수하물 | su-ha-mul | Baggage / Luggage |
| 수하물 찾는 곳 | su-ha-mul chat-neun got | Baggage Claim |
| 수하물 수취대 | su-ha-mul su-chwi-dae | Baggage Carousel |
| 세관 | se-gwan | Customs |
| 세관신고 | se-gwan-sin-go | Customs Declaration |
| 신고할 물품 | sin-go-hal mul-pum | Items to Declare / Goods to Declare |
| 환승 | hwan-seung | Transfer / Transit |
| 입국장 | ip-guk-jang | Arrivals Hall |
| 출구 | chul-gu | Exit |
What Is the Difference Between 「입국심사」 and 「세관」?
「입국심사」 deals with whether a traveler may enter, their purpose of stay, and identity information. 「세관」 deals with carried goods and declarations.
To ask where immigration is, say:
- Example: 입국심사는 어디예요?
Romanization: ip-guk-sim-sa-neun eo-di-ye-yo?
Translation: Where is immigration?
「어디예요?」 asks directly about a place and is useful when the route is unclear.
To find customs, say:
- Example: 세관은 어디예요?
Romanization: se-gwa-neun eo-di-ye-yo?
Translation: Where is customs?
「세관」 specifically means customs, not the immigration counter.
If you have goods to declare, say:
- Example: 신고할 물품이 있어요.
Romanization: sin-go-hal mul-pu-mi i-sseo-yo.
Translation: I have goods to declare.
「신고하다」 means to declare; 「신고할 물품」 means goods requiring declaration.
Common Korean Questions at Immigration
The questions asked vary with each traveler and the circumstances, so not everyone receives the same questions. Your purpose, length of stay, and accommodation are still the most useful topics to prepare.
You do not need to translate every word. Catch 「왜」「며칠」 and 「어디」 first to identify whether the officer is asking about purpose, days, or place.
1. Answering the Purpose Question 「왜 오셨어요?」
「왜 오셨어요?」 literally means “Why did you come?” and asks your purpose in an immigration context. You may also hear the more formal 「방문 목적이 무엇입니까?」.
For tourism, the simplest answer is 「관광하러 왔습니다」.
- Example: 한국에는 왜 오셨어요?
Romanization: han-gu-ge-neun wae o-syeo-sseo-yo?
Translation: What is the purpose of your visit to Korea?
In other settings the same question may simply ask why someone came; at the airport, context supplies the immigration meaning. - Example: 관광하러 왔습니다.
Romanization: gwan-gwang-ha-reo wat-seum-ni-da.
Translation: I came for sightseeing.
「V-(으)러 오다」 means to come in order to do something. This short answer is clear and suitable for immigration. - Example: 친구를 만나러 왔습니다.
Romanization: chin-gu-reul man-na-reo wat-seum-ni-da.
Translation: I came to meet a friend.
If visiting a friend is the real purpose, state it directly rather than forcing the answer 「관광」.
2. Answering 「며칠 동안 머무르세요?」 About Your Stay
「며칠」 means how many days, and 「동안」 marks a period. Hearing 「며칠 동안」 usually means the officer is asking how long you will stay.
The simplest response combines a number with 「일 동안」. 「5일 동안」 means for five days.
- Example: 한국에 며칠 동안 머무르세요?
Romanization: han-gu-ge mye-chil dong-an meo-mu-reu-se-yo?
Translation: How many days will you stay in Korea?
「머무르다」 means to stay and is common in formal settings. Catching 「며칠」 is often enough to recognize the question. - Example: 5일 동안 머물 예정입니다.
Romanization: o-il dong-an meo-mul ye-jeong-im-ni-da.
Translation: I plan to stay for five days.
「-(으)ㄹ 예정이다」 expresses a planned action. - Example: 일주일 정도 있을 예정입니다.
Romanization: il-ju-il jeong-do i-sseul ye-jeong-im-ni-da.
Translation: I plan to stay for about a week.
「정도」 means approximately and is useful when the duration is not stated to an exact day.
3. Answering 「어디에 머무르세요?」 About Accommodation
「어디에 머무르세요?」 and 「어디에서 지내세요?」 both ask where you will stay. Preparing your hotel name and address is more practical than memorizing a long response.
If the details are on your phone, show the screen and add 「여기에서 묵을 예정입니다」.
- Example: 한국에서는 어디에 머무르세요?
Romanization: han-gu-ge-seo-neun eo-di-e meo-mu-reu-se-yo?
Translation: Where will you stay in Korea?
「어디에」 asks for the accommodation, while 「머무르세요」 is a polite form meaning to stay. - Example: 서울에 있는 호텔에 머물 예정입니다.
Romanization: seo-u-re it-neun ho-te-re meo-mul ye-jeong-im-ni-da.
Translation: I plan to stay at a hotel in Seoul.
If you know the hotel’s name, replace 「호텔」 with the actual name. - Example: 숙소 주소는 여기 있습니다.
Romanization: suk-sso ju-so-neun yeo-gi it-seum-ni-da.
Translation: The address of my accommodation is here.
For complex information, show the booking instead of struggling to read the whole address aloud.
Korean for Baggage Claim: What to Say When You Cannot Find Your Bag
After immigration, baggage claim is one of the places where you may genuinely need to speak Korean. Incheon Airport lists 「수하물 찾기」 as part of the arrival process, and checked baggage arrives at an assigned 「수하물 수취대」.
「짐」 is the everyday word for luggage, while 「수하물」 is more formal and common in airline and airport announcements. Either works with staff.
1. Asking Where the Carousel Is
- Example: 수하물 찾는 곳이 어디예요?
Romanization: su-ha-mul chat-neun go-si eo-di-ye-yo?
Translation: Where is baggage claim?
You do not need to know 「수취대」; 「수하물 찾는 곳」 literally means the place where you find baggage. - Example: 이 비행기 수하물은 어디에서 찾아요?
Romanization: i bi-haeng-gi su-ha-mu-reun eo-di-e-seo cha-ja-yo?
Translation: Where do I collect the baggage from this flight?
Show your boarding pass or flight number if you are unsure. - Example: 몇 번 수하물 수취대로 가야 해요?
Romanization: myeot beon su-ha-mul su-chwi-dae-ro ga-ya hae-yo?
Translation: Which baggage carousel should I go to?
「몇 번」 asks which number, and 「-로 가야 해요」 asks where you should go.
2. Saying That Your Bag Has Not Appeared
「안 나와요」 is extremely useful. 「나오다」 means to come out, so at a carousel it naturally means that baggage has not appeared.
- Example: 제 짐이 아직 안 나왔어요.
Romanization: je ji-mi a-jik an na-wa-sseo-yo.
Translation: My bag still has not come out.
「아직」 means still or not yet and fits a carousel that has been running for some time. - Example: 제 가방이 안 보여요.
Romanization: je ga-bang-i an bo-yeo-yo.
Translation: I cannot see my bag.
「안 보여요」 literally means it is not visible and can simply explain what you are looking for. - Example: 수하물이 나오지 않았어요. 어디에 문의하면 돼요?
Romanization: su-ha-mu-ri na-o-ji a-na-sseo-yo. eo-di-e mun-ui-ha-myeon dwae-yo?
Translation: My baggage did not come out. Where should I ask about it?
「어디에 문의하면 돼요?」 asks for the next step, making it easier to receive useful directions.
3. Reporting Lost or Damaged Baggage
Incheon Airport has a 「분실수하물 카운터」, or lost-baggage counter. Airlines and the airport may have different responsibilities, so follow local instructions.
- Example: 제 수하물이 없어졌어요.
Romanization: je su-ha-mu-ri eop-sseo-jyeo-sseo-yo.
Translation: My baggage has disappeared.
「없어지다」 means to disappear and is easier to say than a complicated technical term. - Example: 수하물 분실 신고는 어디에서 하나요?
Romanization: su-ha-mul bun-sil sin-go-neun eo-di-e-seo ha-na-yo?
Translation: Where do I report lost baggage?
「분실 신고」 means a loss report. - Example: 가방이 파손됐어요.
Romanization: ga-bang-i pa-son-dwae-sseo-yo.
Translation: My suitcase is damaged.
「파손되다」 means to be damaged and works for broken wheels, shells, or handles.
Korean for Customs: Declaring Goods and Asking About Restrictions
「세관」 is customs and 「세관신고」 is a customs declaration. Customs checks carried goods, unlike 「입국심사」.
Requirements vary by item, quantity, and current rules. If you are uncertain about food, medicine, cash, or valuable goods, asking 「신고해야 하나요?」 is safer than guessing.
1. Saying Whether You Have Goods to Declare
- Example: 신고할 물품이 없습니다.
Romanization: sin-go-hal mul-pu-mi eop-seum-ni-da.
Translation: I have nothing to declare.
「없습니다」 is the formal form of “there is none,” suitable for customs. - Example: 신고할 물품이 있습니다.
Romanization: sin-go-hal mul-pu-mi it-seum-ni-da.
Translation: I have goods to declare.
If you know a declaration is required, state that first before explaining the item. - Example: 이 물건은 신고해야 하나요?
Romanization: i mul-geo-neun sin-go-hae-ya ha-na-yo?
Translation: Do I need to declare this item?
「-아／어야 하나요?」 asks whether something is required.
2. Asking Whether an Item May Enter Korea
- Example: 이 음식은 한국에 가져가도 돼요?
Romanization: i eum-si-geun han-gu-ge ga-jyeo-ga-do dwae-yo?
Translation: May I bring this food into Korea?
「-아／어도 돼요?」 is a common way to ask permission. - Example: 이 약은 반입할 수 있나요?
Romanization: i ya-geun ba-ni-pal su in-na-yo?
Translation: Can I bring this medicine into the country?
「반입하다」 means to bring something in and is common in customs notices. - Example: 이건 개인적으로 사용하는 물건입니다.
Romanization: i-geon gae-in-jeo-geu-ro sa-yong-ha-neun mul-geon-im-ni-da.
Translation: This is an item for personal use.
「개인적으로 사용하는 물건」 identifies an item as personal rather than commercial.
Korean for Airport Transfers: Follow 「환승」
「환승」 means transfer or connection. The same word appears in the subway and is not limited to airports.
If you are only connecting, do not automatically follow 「입국」 all the way. Whether you must enter Korea, collect baggage, or check it again depends on the airline, ticket, and transfer conditions.
1. Asking for the Transfer Direction
- Example: 환승은 어디로 가야 해요?
Romanization: hwan-seung-eun eo-di-ro ga-ya hae-yo?
Translation: Where should I go for a transfer?
「어디로 가야 해요?」 explicitly asks the direction and is more precise than only 「어디예요?」. - Example: 환승 구역이 어디예요?
Romanization: hwan-seung gu-yeo-gi eo-di-ye-yo?
Translation: Where is the transfer area?
「구역」 means zone or area. - Example: 다음 비행기 탑승구가 어디예요?
Romanization: da-eum bi-haeng-gi tap-seung-gu-ga eo-di-ye-yo?
Translation: Where is the gate for my next flight?
「탑승구」 means boarding gate; you can also show your boarding pass.
2. Checking Whether You Must Reclaim Your Bag
- Example: 환승할 때 짐을 찾아야 하나요?
Romanization: hwan-seung-hal ttae ji-meul cha-ja-ya ha-na-yo?
Translation: Do I need to collect my baggage during the transfer?
「-아／어야 하나요?」 checks whether a procedure is required. - Example: 짐이 최종 목적지까지 바로 가나요?
Romanization: ji-mi choe-jong mok-jjeok-jji-kka-ji ba-ro ga-na-yo?
Translation: Will my baggage go directly to the final destination?
「최종 목적지」 means final destination; show your baggage tag when asking. - Example: 다시 체크인해야 하나요?
Romanization: da-si che-keu-in-hae-ya ha-na-yo?
Translation: Do I need to check in again?
「다시」 means again and is useful when transfer procedures are unclear.
Asking for Help: Repetition, Slower Speech, English, and Written Information
The hardest part of airport communication is often speed, not vocabulary. Do not keep answering 「네」 when you did not understand, because the conversation may continue without resolving the issue.
Say 「다시 말씀해 주세요」 or 「천천히 말씀해 주세요」 directly. Both are short and polite.
1. Asking Someone to Repeat
- Example: 죄송하지만 다시 말씀해 주세요.
Romanization: joe-song-ha-ji-man da-si mal-sseum-hae ju-se-yo.
Translation: I am sorry, but please say that again.
「말씀」 is the honorific form of 「말」 and sounds natural with staff. - Example: 잘 못 들었어요. 다시 말씀해 주세요.
Romanization: jal mot deu-reo-sseo-yo. da-si mal-sseum-hae ju-se-yo.
Translation: I did not hear clearly. Please say it again.
「잘 못 들었어요」 fits the situation better than simply saying 「몰라요」. - Example: 한 번만 더 말씀해 주세요.
Romanization: han beon-man deo mal-sseum-hae ju-se-yo.
Translation: Please say it one more time.
「한 번만 더」 means once more and is common in conversation.
2. Asking Someone to Speak More Slowly
- Example: 천천히 말씀해 주세요.
Romanization: cheon-cheon-hi mal-sseum-hae ju-se-yo.
Translation: Please speak slowly.
The short sentence is direct but not rude. - Example: 한국어를 잘 못해요.
Romanization: han-gu-geo-reul jal mo-tae-yo.
Translation: I am not very good at Korean.
「잘 못하다」 means not to be good at something; it does not claim you know no Korean at all. - Example: 조금만 천천히 말씀해 주실 수 있나요?
Romanization: jo-geum-man cheon-cheon-hi mal-sseum-hae ju-sil su in-na-yo?
Translation: Could you speak a little more slowly?
This is fuller and more polite, although the shorter sentence is sufficient for urgent communication.
3. Switching to English, Writing, or a Phone Screen
- Example: 영어로 말씀해 주실 수 있나요?
Romanization: yeong-eo-ro mal-sseum-hae ju-sil su in-na-yo?
Translation: Could you speak in English?
「-로」 marks a language or method; 「영어로」 means in English. - Example: 여기에 적어 주실 수 있나요?
Romanization: yeo-gi-e jeo-geo ju-sil su in-na-yo?
Translation: Could you write it here?
For addresses, counter numbers, or complex names, having staff write them is often fastest. - Example: 이 화면을 봐 주세요.
Romanization: i hwa-myeo-neul bwa ju-se-yo.
Translation: Please look at this screen.
Show a hotel booking, electronic ticket, or address already saved on your phone.
Six Reusable Korean Sentence Patterns for Airports
Airport language looks extensive, but most sentences return to a few simple questions. Remembering these structures makes substitution easier than memorizing thirty separate lines.
| Korean Expression | Meaning | Airport Example |
| 어디예요? | Where is it? / Where is …? | 세관은 어디예요? |
| 어디로 가야 해요? | Where should I go? | 환승은 어디로 가야 해요? |
| 어떻게 하면 돼요? | What should I do? / How do I do it? | 신고는 어떻게 하면 돼요? |
| -아/어도 돼요? | Can I …? / Is it okay to …? | 이걸 가져가도 돼요? |
| -아/어야 하나요? | Do I have to …? | 다시 체크인해야 하나요? |
| 안 나와요 | It’s not coming out. | 제 짐이 안 나와요. |
Use 「어디예요?」 for a Location
Use it for fixed places such as toilets, customs, baggage claim, and exits.
✅ 세관은 어디예요?
Where is customs?
✅ 출구가 어디예요?
Where is the exit?
If the important point is where to proceed next, 「어디로 가야 해요?」 is more precise.
Use 「어떻게 하면 돼요?」 for a Procedure
It means “What should I do?” and is ideal when you do not understand an airport process.
✅ 입국신고는 어떻게 하면 돼요?
How do I complete the arrival declaration?
✅ 수하물을 못 찾았는데 어떻게 하면 돼요?
I cannot find my baggage. What should I do?
You do not need to know the correct process in advance; state the problem first and ask the question.
Use 「-아／어야 하나요?」 to Confirm a Requirement
This pattern asks whether something must be done.
✅ 신고해야 하나요?
Do I need to declare it?
✅ 짐을 다시 찾아야 하나요?
Do I need to reclaim my baggage?
✅ 다시 체크인해야 하나요?
Do I need to check in again?
It is more useful for uncertain procedures than memorizing every individual rule.
What Is Korea’s e-Arrival Card? Useful 「전자입국신고서」 Vocabulary
Korea’s official electronic arrival declaration is 「전자입국신고서」, called the e-Arrival Card in English. It can be submitted online within three days before arrival. Whether a traveler must file depends on conditions such as a valid visa, K-ETA, and residence status; the official Navigator can help determine eligibility.
For Taiwanese passport holders, the Korean government has currently extended the temporary K-ETA exemption through December 31, 2026. Without a valid K-ETA, whether a separate electronic declaration is required should still be determined using the official system at the time of departure. Entry rules may change, so rechecking is safer than relying on an old guide.
Common words on airport and declaration pages include:
| Korean | Romanization | English Meaning |
| 전자입국신고서 | jeon-ja-ip-guk-sin-go-seo | Electronic Arrival Card / E-Arrival Card |
| 신고 | sin-go | Declaration |
| 여권정보 | yeo-kkwon-jeong-bo | Passport Information |
| 여행정보 | yeo-haeng-jeong-bo | Travel Information |
| 체류정보 | che-ryu-jeong-bo | Stay Information |
| 숙소 | suk-sso | Accommodation / Place of Stay |
| 입국일 | ip-gu-gil | Date of Entry |
| 출국일 | chul-gu-gil | Date of Departure |
| 제출 | je-chul | Submit |
| 수정 | su-jeong | Edit / Modify |
| 조회 | jo-hoe | View / Check |
Scenario 1: Purpose of Visit at Immigration
A: 한국에는 왜 오셨어요?
han-gu-ge-neun wae o-syeo-sseo-yo?
What is the purpose of your visit to Korea?
B: 관광하러 왔습니다. 5일 동안 머물 예정입니다.
gwan-gwang-ha-reo wat-seum-ni-da. o-il dong-an meo-mul ye-jeong-im-ni-da.
I came for sightseeing and plan to stay for five days.
📌 Grammar point: 「V-(으)러 오다」 expresses coming for a purpose; 「-(으)ㄹ 예정이다」 states a planned itinerary.
Scenario 2: Your Bag Has Not Appeared
A: 제 짐이 아직 안 나왔어요. 어디에 문의하면 돼요?
je ji-mi a-jik an na-wa-sseo-yo. eo-di-e mun-ui-ha-myeon dwae-yo?
My bag still has not come out. Where should I ask?
B: 저쪽 분실수하물 카운터에 문의해 주세요.
jeo-jjok bun-sil-su-ha-mul ka-un-teo-e mun-ui-hae ju-se-yo.
Please ask at the lost-baggage counter over there.
📌 Grammar point: 「안 나왔어요」 states the problem and 「어디에 문의하면 돼요?」 asks for the next step, making the request more complete than only saying the bag is missing.
Scenario 3: You Cannot Understand the Staff Member
A: 이쪽으로 가셔서 여권을 보여 주세요.
i-jjo-geu-ro ga-syeo-seo yeo-kkwo-neul bo-yeo ju-se-yo.
Please go this way and show your passport.
B: 죄송하지만 한국어를 잘 못해요. 천천히 말씀해 주세요.
joe-song-ha-ji-man han-gu-geo-reul jal mo-tae-yo. cheon-cheon-hi mal-sseum-hae ju-se-yo.
I am sorry, but my Korean is limited. Please speak slowly.
📌 Grammar point: You do not need to pretend to understand. 「잘 못해요」 explains limited proficiency, and 「천천히 말씀해 주세요」 directly requests the needed help.
Cultural notes:
- Korean airports often display Korean and English together, so you do not need to produce every airport noun. Recognizing 「입국심사」「수하물」「세관」 and 「환승」 helps you identify your current stage quickly.
- Immigration answers do not need to be long. 「관광하러 왔습니다」 and 「5일 동안 머물 예정입니다」 answer directly. For long hotel names or addresses, showing the booking is usually more efficient than struggling to read it aloud.
- Both 「짐」 and 「수하물」 mean baggage. 「짐」 is common in daily life; 「수하물」 appears in airline and airport contexts. Saying 「제 짐이 안 나왔어요」 to staff is entirely natural.
Comparing Korean and Japanese Airport Expressions
Korean and Japanese airports ask about almost identical information: purpose of entry, accommodation, baggage, and customs. The practical difference lies less in the process than in question forms. Korean often uses 「어디예요?」 and 「-아／어야 하나요?」; Japanese uses forms such as 「どこですか」「〜必要がありますか」 and 「〜したほうがいいですか」.
- Example: 관광하러 왔습니다.
Romanization: gwan-gwang-ha-reo wat-seum-ni-da.
Translation: I came for sightseeing.
Korean uses 「V-(으)러 오다」 to express coming for a purpose. - Example: 수하물 찾는 곳이 어디예요?
Romanization: su-ha-mul chat-neun go-si eo-di-ye-yo?
Translation: Where is baggage claim?
Korean 「어디예요?」 directly asks for a location. - Example: 이 물건은 신고해야 하나요?
Romanization: i mul-geo-neun sin-go-hae-ya ha-na-yo?
Translation: Do I need to declare this item?
Korean 「-아／어야 하나요?」 confirms whether a procedure is required.
◆ Core difference from Japanese airport language:
Korean requests often place requirement, permission, and direction directly in the ending through 「-아／어야 해요?」「-아／어도 돼요?」 and 「어디로 가야 해요?」. Japanese handles the same questions with 「〜必要がありますか」「〜てもいいですか」 and 「どちらへ行けばいいですか」. In either language, recognizing the type of question and using a short reusable sentence is more practical than preparing a long conversation.
Airport Korean appears extensive, but the same situations recur: finding a place, checking a procedure, answering immigration questions, and asking staff for help when something goes wrong. 「어디예요?」「어디로 가야 해요?」 and 「신고해야 하나요?」 work from immigration to customs and transfer areas. If your bag does not appear, 「제 짐이 아직 안 나왔어요」 already gives the counter enough information to understand the problem.
Do not memorize every example as a fixed script. First recognize the words that actually appear on signs—「입국심사」「수하물」「세관」「환승」—and choose a few reusable sentences. Policies for the e-Arrival Card, K-ETA, customs declarations, and restricted goods can change and should be checked again before departure. The Korean itself is simpler: knowing what to ask on site is more useful than memorizing a large number of lines.
FAQs
Not necessarily. Immigration is not a Korean speaking test, and the language used varies by staff and traveler. Short sentences such as 「관광하러 왔습니다」 and 「5일 동안 머물 예정입니다」 mainly help you recognize and answer Korean questions.
Say 「관광하러 왔습니다」. For a general trip, 「여행하러 왔습니다」 also works. Both are more natural than preparing a long explanation.
Say 「5일 동안 머물 예정입니다」. The simpler 「5일 동안 있을 예정입니다」 also clearly communicates your stay.
Start with 「제 짐이 아직 안 나왔어요」, meaning your bag has not appeared yet. Add 「어디에 문의하면 돼요?」 to ask which counter can help.
It is called 「전자입국신고서」. Eligibility depends on conditions including visas, K-ETA, and residence status, and rules may change, so check the official system before departure.