Cheap flights to Seoul on sale now! Encircled by mountains, containing a population of 10-million, and with more than a million registered motor vehicles inching through its congested streets, one would imagine the metropolis of Seoul, capital of South Korea, to be a polluted nightmare. The city fathers, however, have made a concerted effort in recent years to clean and green this thriving, prosperous city. Book your cheap flights online now with helloworld!
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