Excuse my misspelling, but just googling I find numerous examples where it has been used for airport expansion with no mention of lawsuits.
Perhaps your misspelling might be indicative that you know less about eminent domain than apparently I do.
I should have been more specific: eminent domain is never used as a first measure for property acquisitions for airports; in fact, it's the last and worst scenario because it takes the longest, it's the most expensive option, and usually only involves one or a few property owners. It's used to acquire land from holdouts after years of negotiations to purchase property. Filing for eminent domain itself is a lengthy legal process. Acquiring property from a large number of owners can take five, ten, or more years, and always comes after lawsuits over land use, environmental concerns, noise complaints, etc. Every single one of the instances you mentioned involved lawsuits, because that's how just eminent domain cases work.
The first article you listed says this:
"The legal battles were long and hard-fought, but, in the end, plans to expand O’Hare International Airport won out over protests from residents of Bensenville, who fought to save their homes from being taken over."http://chicago.cbslocal.com/2014/07/25/ ... ghborhood/
Legal battles sounds a lot like mentioning of lawsuits to me. It was also only used for a handful of holdout property owners, not for the entire acquisition. Negotiations prior to filing of eminent domain takes a very long time, and is usually done over the course of one or two decades.
The remaining articles you mentioned either only involved one or two property owners, or a limited number of property owners following numerous rejections of settlement offers.
So, saying "lawsuits-smah-suits" isn't exactly accurate when every single instance you just cited involves a lawsuit, and many involve years of legal battles to move the project forward. The government does not have the ability to swoop in and quickly seize property, so if your suggestion that this strategy could be employed to expand SWF any time in the next two decades, it's an inaccurate representation of reality.