“EFD”是“Ellington Field Airport code, Houston,

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“DAL”是“Dallas Love Field Airport, Dallas, Texas.

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“AFW”是“Alliance Airport code. Fort Worth, Texas.

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“MDW”是“Midway International Airport in Chicago.

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“SPI”是“Springfield Illinois Airport. Springfield,

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“CMI”是“Champaign Airport code. Willard Airport.

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“AMA”是“Amarillo Airport code. Amarillo, Texas.

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“AUS”是“Austin International Airport, Austin,

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“BPT”是“Beaumont / Port Arthur Airport code. South

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“CLL”是“College Station Easterwood Airport code.

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