In this age of modern air travel, it is relatively easy for anyone with the means to book a flight to almost any corner of the Earth.
Unless that corner is Antarctica, a place where you cannot simply pave a runway and start landing planes.
In Antarctic locations such as Union Glacier, the runway is blue ice: dense, intensely blue glacier ice formed when snow falls onto glaciers, gets compacted and recrystallizes. This is generally a place for cargo and military jets, such as the Russian Ilyushin.
But commercial jets are making progress — and the Icelandic airline Loftleidir landed the first Boeing 757 on the blue ice runway at Union Glacier on Thursday.