You can also fly to Jackson Hole directly.

Per the wedding venue about flying into Jackson:

Jackson Hole Airport (JAC) is the only airport that serves the Jackson Area. It is located 26 miles (35 minutes) north of the wedding venue and is the only airport within the national park. It is serviced by major airlines (Delta, American, and United). Due to the popularity of the park, we recommend booking flights early.

If you are okay with some additional driving and might want to fly into a larger airport, you can fly into Idaho Falls Airport (IDA) which is located 90 miles/2 hours west of the park. You could also fly into Salt Lake City International Airport (SLC) which is 306 miles/5 hours south of the park.

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