U.S. domestic airlines had clamored long and loudly for competition in international routes. Last week they got what they had been clamoring for. Powerful Pan American Airways Corp., an old hand at deflating competitors, announced that it was immediately cutting its passenger fare to Great Britain from $525 to Foynes to $275 all the way to London. It could do this, it said smoothly, because it was ready to start transatlantic service this week with Douglas DC-4s, faster and cheaper to operate than Clippers.
Pan Am's move was well-timed. American Airlines Inc. had already announced that its first transatlantic commercial flight,...