ICN - SIN

$92 Find Cheap Flights from Incheon to Singapore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Incheon to Singapore departing on 7/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Singapore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Singapore.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Singapore.
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Everything you should know

Cheapest round-trip
$213
Typical prices: $766-$349
Multiple Airlines
vr 10/2ma 10/5
ICN - SIN • 1 stop
Cheapest non-stop
$250
Typical prices: $420-$202
Jeju Air
vr 4/24za 4/25
ICN - SIN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Asiana's 9 seats per row offer extra comfort in economy.
Expect long security lines at Incheon; arrive early.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $250 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Asiana Airlines, Jeju Air and others. Average duration is 6h 23m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 83% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $242 (round-trip)
Shortest trip • 9h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Singapore!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Incheon to Singapore (ICN-SIN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Incheon to Singapore that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Incheon to Singapore

vr, okt. 2 - ma, okt. 5
Multiple Airlines Logo
7:10 pm - 7:15 am
ICN
-
SIN
13h 05m
1 stop
Multiple Airlines Logo
9:20 pm - 7:00 am
SIN
-
ICN
8h 40m
1 stop
$213Multiple Airlines
do, aug. 6 - ma, aug. 10
Multiple Airlines Logo
8:15 am - 8:45 pm
ICN
-
SIN
13h 30m
1 stop
Multiple Airlines Logo
8:45 pm - 7:00 am
SIN
-
ICN
9h 15m
1 stop
$223Multiple Airlines
do, mei. 21 - ma, jun. 8
Multiple Airlines Logo
8:15 am - 6:05 pm
ICN
-
SIN
10h 50m
1 stop
Multiple Airlines Logo
8:45 pm - 7:00 am
SIN
-
ICN
9h 15m
1 stop
$224Multiple Airlines
do, mei. 21 - ma, jun. 8
Multiple Airlines Logo
8:15 am - 6:05 pm
ICN
-
SIN
10h 50m
1 stop
Multiple Airlines Logo
8:45 pm - 7:00 am
SIN
-
ICN
9h 15m
1 stop
$225Multiple Airlines
vr, apr. 24 - za, apr. 25
Jeju Air Logo
6:10 pm - 11:40 pm
ICN
-
SIN
6h 30mnonstop
Jeju Air Logo
12:50 am - 8:40 am
SIN
-
ICN
6h 50mnonstop
$250Jeju Air
do, jul. 9 - ma, jul. 13
Multiple Airlines Logo
8:15 am - 8:00 pm
ICN
-
SIN
12h 45m
1 stop
Multiple Airlines Logo
9:20 pm - 7:00 am
SIN
-
ICN
8h 40m
1 stop
$254Multiple Airlines
wo, mei. 13 - zo, mei. 17
Scoot Logo
11:30 am - 5:00 pm
ICN
-
SIN
6h 30mnonstop
Scoot Logo
2:15 am - 9:45 am
SIN
-
ICN
6h 30mnonstop
$259Scoot
wo, mei. 13 - za, mei. 16
Shandong Airlines Logo
10:15 pm - 12:10 am
ICN
-
SIN
26h 55m
1 stop
Shandong Airlines Logo
1:15 am - 10:40 pm
SIN
-
ICN
20h 25m
1 stop
$260Shandong Airlines
vr, apr. 24 - zo, apr. 26
Jeju Air Logo
6:10 pm - 11:40 pm
ICN
-
SIN
6h 30mnonstop
Jeju Air Logo
12:50 am - 8:40 am
SIN
-
ICN
6h 50mnonstop
$261Jeju Air
vr, apr. 24 - zo, apr. 26
Jeju Air Logo
6:10 pm - 11:40 pm
ICN
-
SIN
6h 30mnonstop
Jeju Air Logo
12:50 am - 8:40 am
SIN
-
ICN
6h 50mnonstop
$262Jeju Air
Booking Insights

KAYAK's insights & trends for Incheon to Singapore flights

Get data-powered insights and trends into flights from Incheon to Singapore to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Incheon Intl Airport to Singapore?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Incheon Intl Airport to Singapore departing in October.

What’s the cheapest day of the week to fly from Incheon to Singapore?

The average price of all round-trip flights from Incheon Intl Airport to Singapore clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Singapore on a Thursday and more expensive on a Sunday. On your return trip to Incheon, you should consider flying back on a Friday, and avoid Mondays for better deals.

What is the cheapest month to fly from Incheon Intl Airport to Singapore?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Incheon Intl Airport to Singapore, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Incheon Intl Airport to Singapore is May, where tickets cost $246 (return) on average. On the other hand, the most expensive months are October and December, where the average cost of round-trip tickets is $527 and $440 respectively.

Can I save money by flying with a layover from Incheon Intl Airport to Singapore?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $345 on average.

How far in advance should I book a flight from Incheon Intl Airport to Singapore?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Incheon Intl Airport to Singapore, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Incheon Intl Airport to Singapore, you should book around 3 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Incheon to Singapore

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on Asiana Airlines

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Chris Dong

Chris Dong

Expert on Singapore Airlines

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Robert Schrader

Robert Schrader

Expert on Korean Air and ICN

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Jessica Macdonald

Jessica Macdonald

Expert on SIN

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Good to know

Low seasonMarch
Cheapest flight$92
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Incheon to Singapore

When to book flights from Incheon to Singapore

Are your dates flexible? Find out the best times to travel from Incheon to Singapore based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Incheon to Singapore flights

  • Where can I park my car long-term at ICN before I leave for SIN?

    In Terminal 1, ICN provides three long-term parking lots, on the east, west, and south sides of the terminal. Terminal 2 has one long-term parking lot. Buses run between the long-term parking lots and the terminals every 6 to 17min. The time for one of these shuttle rides to get from the parking lot to the terminal is approximately 15min.

  • Does ICN have a hotel airport?

    Yes. In the international Airport Terminal at ICN, in the east area on the 4th floor, you will find the Incheon Airport Transit Hotel. These hotel rooms can be rented in six-hour blocks. You can enjoy a nap or a full night’s sleep in a comfortable room with a bed, table space, and a chair. You can visit the hotel’s Matina Lounge to have a meal or a drink and avail yourself of other amenities and facilities as well.

  • Does SIN provide facilities for nursing mothers?

    Yes. SIN provides baby care rooms where traveling mothers can change their babies, nurse their babies, or pump. These areas are clean and private and come with hot water dispensers as well as space for taking care of all your baby’s needs. There are several baby care rooms in every terminal.

  • How can I fly from ICN to SIN?

    Airlines including Singapore Airlines, T’way Air, Asiana Airlines, and Korean Air operate non-stop flights between ICN and SIN. Airlines such as Hahn Air Systems and Flex Flight operate one-stop flights, usually stopping in Da Nang, Vietnam (DAD).

  • What is the cheapest flight from Incheon Intl Airport to Singapore?

    In the last 3 days, the lowest price for a flight from Incheon Intl Airport to Singapore was $92 for a one-way ticket and $213 for a round-trip.

  • Do I need a passport to fly between Incheon and Singapore?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Incheon and on arrival in Singapore.

  • Which airlines offer Wi-Fi service onboard planes from Incheon to Singapore?

    All the following airlines offer inflight Wi-Fi service on the Incheon to Singapore flight route: Asiana Airlines, Scoot, Singapore Airlines, KLM, Air Canada, Scandinavian Airlines, and Lufthansa.

  • Which aircraft models fly most regularly from Incheon to Singapore?

    The Airbus A330-300 is the aircraft model that flies most regularly on the Incheon to Singapore flight route.

  • Which airline alliances offer flights from Incheon to Singapore?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Incheon and Singapore, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Incheon to Singapore?

    There are nonstop flights from Incheon to Singapore on a daily basis.

  • Which is the best airline for flights from Incheon to Singapore, Korean Air or Singapore Airlines?

    The two airlines most popular with KAYAK users for flights from Incheon to Singapore are Korean Air and Singapore Airlines. With an average price for the route of $364 and an overall rating of 8.4, Korean Air is the most popular choice. Singapore Airlines is also a great choice for the route, with an average price of $440 and an overall rating of 8.2.

  • How does KAYAK find such low prices on flights from Incheon to Singapore?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Incheon to Singapore.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Incheon to Singapore?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Singapore from Incheon is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Incheon to Singapore?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Singapore with an airline and back to Incheon with another airline. Booking your flights between Incheon and SIN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Incheon to Singapore?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Singapore from Incheon up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Incheon Intl Airport to Singapore

  • Looking for a cheap flight? 25% of our users found flights on this route for $129 or less one-way and $359 or less round-trip.
  • Incheon International Airport (ICN), just outside Seoul, Korea, serves as a hub for Korean Air, Asiana Airlines, and Jeju Air. Singapore Changi Airport (SIN) is a hub for Singapore Airlines, SilkAir, Scoot, Jetstar Asia Airways, and BOC Aviation.
  • If you have time before your flight at ICN, consider visiting the Incheon Airport Museum at Gate 122 West in the Duty Free Zone. This museum displays contemporary artwork and authentic Korean artifacts to create the essence of intangible Korean cultural heritage.
  • At ICN, in the Duty Free Area of Terminal 1 near Gate 29, travelers can enjoy a performance of gugak, traditional Korean music. The airport schedules four performances a day throughout the year. There is also the same schedule of gugak concerts in Terminal 2, near Gate 248. These gugak performances are just one of many types of live performances you can find on any given day throughout ICN.
  • In the center of Public Area 5F in Terminal 2 at ICN, passengers can experience the wonders of the Airport Observatory. From the top of the second passenger terminal, you have an ideal view of planes taking off and landing. You can also see a huge model of the airport, learn about 3D mapping technology, and enjoy an unforgettable VR (virtual reality) experience.
  • At SIN, if you want to store your baggage when you land, whether you have to leave the airport quickly on business when you land or whether you want to explore the airport and shop hands-free, you can take advantage of the Baggage Storage facilities. There is a Baggage Storage desk in every Terminal. Bags will have to be inspected when you drop them off.

Prefer to fly direct from Incheon to Singapore?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Incheon Intl to Singapore Changi.
Find which airlines fly direct from Incheon Intl Airport to Singapore Changi Airport, which days they fly and book direct flights.

Direct departures

Incheon Intl to Singapore Changi

Monday

Asiana Airlines,Jeju Air,Korean Air, +3 more

Asiana Airlines,Jeju Air, +4 more

Tuesday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Wednesday

Asiana Airlines,Jeju Air,Korean Air, +3 more

Asiana Airlines,Jeju Air, +4 more

Thursday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Friday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Saturday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Sunday

Asiana Airlines,Jeju Air,Korean Air, +3 more

Asiana Airlines,Jeju Air, +4 more

See more direct flights

Direct returns

Singapore Changi to Incheon Intl

Monday

Asiana Airlines,Jeju Air,Korean Air, +3 more

Asiana Airlines,Jeju Air, +4 more

Tuesday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Wednesday

Asiana Airlines,Jeju Air,Korean Air, +3 more

Asiana Airlines,Jeju Air, +4 more

Thursday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Friday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Saturday

Asiana Airlines,Jeju Air,Korean Air, +2 more

Asiana Airlines,Jeju Air, +3 more

Sunday

Asiana Airlines,Jeju Air,Korean Air, +3 more

Asiana Airlines,Jeju Air, +4 more

See more direct flights

Reviews of the top 5 airlines serving from Incheon to Singapore

 
See real verified KAYAK customer reviews for airlines flying from Incheon to Singapore. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Incheon to Singapore? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1205 reviews
8.7Crew
8.2Entertainment
8.5Boarding
8.1Food
8.3Comfort
Airline reviews

Great service and comfort level. You can have more of vegetarian food options.

10.0 ExcellentAnonymous, Nov 2025
ICN - SFO
Read more Korean Air reviews

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

There could have been better spacing of the passengers, it was crowded in some parts of the plane then other while rows were empty

Plane took off on time and I had the whole row to myself!

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

This flight was a superior flight in all regards. Extremely pleasant experience.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

Kayak really screwed up by offloading the booking to a third party. They were completely inept and caused a bunch of toil. I will never use Kayak again.

I had ordered vegetarian food. What I was presented was extremely dissatisfying and not up to the mark. I pretty much did not eat entire 19 hours. For.an airline voted as best in business, it was extremely disappointing. Seats were not comfortable to sleep. Entertainment system didn’t have much choice. WiFi didn’t work for more than half the time. Cabin crew were also difficult to understand. A bit of diversity like Emirates crew would go a long way.

A little more room from the reclining seat in the front of me.

It was okay. I feel that Singapore Airlines isn't as good as it used to be but it's still not bad

It was fine. Nothing special but nothing went wrong so all good.

Overall the airline tried to give excellent service. The wheelchair service was bad at SFO. My baggage was also delayed but I thank them for taking the trouble to find it and deliver it to my home.

I felt that the whole experience went very smoothly. The aircraft was extremely clean and tidy on boarding. The cabin crew were beautifully turned out very, very efficient and were a credit to Singapore Airlines who are now my favourite carrier.

Excellent crew service. Professional, courteous. Service with a smile. Good food Very decent flight experience

Overall were very good and I was satisfied w/ all the food and services.

Service was very good, food and entertainment systems were good

Kayak uses scammer sites to steal money from their victims.

Customer service and attention to details. The food was good.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

I am thankful that I was able to fly using Asiana

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

Tightest knee space ever experienced on any budget airline. Crew polite and efficient, take off and arrival on time. Surprised that they did not offer water on flight except as sales product. Questions about Food and entertainment not applicable since neither are offered.

At the boarding gate, Jeju airline accepted "carry on" bags for checking in for free due to the "limited cabin space". This is because most passengers were carrying multiple bags that exceed the size and weight limit for carry on items. Rather than inspecting carry-on bags at the counter and requiring excess bags to be checked in for a fee, they allowed freeloading at the boarding gate to to the detriment of those who paid the fee for checked bags. This is totally unfair.

As posred earlier the crew was very accommodating & professional. Thank You Allen

All though you can not help it the kids was loud and unruly, The crew was very accommodating and professional. Thank You Allen.

No priority counter check in for families with young children.

The flight was delayed from GUM to ICN, there was no notification on how delayed the flight would be. Although we received notice, there was no specified time given. The flight was also very uncomfortable.

Amazing experience, tonnes of leg room, great crew and smooth flight. Especially for this price for business class.

Great Value with Tway Airlines I highly recommend flying with Tway Airlines—especially if you're looking for a budget-friendly option. While the lowest fare comes with limited luggage allowance, it suited me perfectly since I was traveling light. Check-in and boarding were impressively fast and hassle-free. The ground staff and cabin crew were exceptionally polite and courteous throughout the journey. Although the aircraft was an older model and lacked inflight entertainment, this was a minor trade-off considering the ticket cost was nearly 70% lower than typical fares on the ICN–FRA route. If you're focused on value and efficiency over luxury, Tway delivers a smooth and pleasant experience.

I liked cleanliness, comfort, kind staff. I thought communication about meals could be better. We did not know how we were supposed to ensure we had food and drinks in our booking

ok flight, but charged for everything. water, food, baggage. no free water available, I had to plead to give me water to take medicine.

Need to consider about zero entertainment services and lack of flight information!

I can't board the 2nd flight due to the last 1st flight. In the 1st flight check-in, I can't board due to the stupid problem of K-ETA visa. The booking system and the flight company should inform the customer a few days earlier. This is the worse experience in my life. I won't use KAYAK and the airline anymore. My friends were also surprised about this stupid situation. I won't use KAYAK and T'way anymore.

I can't board the flight due to the K-ETA problem. You should inform the customer clearly a few days before the flight. I can't cancel/change the flight now. This is the worst experience in my life. I also never hear about this kind of bad experience. I won't use the booking system and the flight company anymore.

Everything you need to know for your flight from Incheon to Singapore

Information on your arrival and departure airports