A quick 20 min ferry ride from Jeju. We went there on a rainy day, however so did not get the whole experience of Udo. It looked to be a beautiful and very serene island. Seafood is good here. Homemade peanut ice cream was also very good here. A great option for a day trip.

Ferry ride from seongsan port was 11,000 W for 2 people and only took about 15 minutes. There's a really good review by katja below, so I won't go in depth. If you don't have a lot of time, take a scooter or ATV. We had a lot of fun cruising around this island on ATV!! As soon as you... More

Great beach, with nice views of Sunrise Point. Bit of a jaunt to get out there on the ferry, and cold during the winter, but worth it.

Udo is a really small island, you can go around by bicycle in several hours. Udo is a volcanic island, so it has several nice beaches with white and black sand, impressing lava rock formations, caves etc. We went there several times, every time for 2-3 days, and every time it was just wonderful. You should go and spend a... More

It was very nice taking a walk along the beach of Udo, the sea is clean but unable to swim because of sharp rocks. We are happy that they keep this place just the same as it is, not making it into a tourism spot. And once again, most of them cannot speak English, we couldn’t say any word to... More

Udo is small and very beautiful island. You can take the ferry from Seongsan for around 15mins. There are many buses on the island to take you for sightseeing.