
Alaska Tours (alaskatours.com)
Aurora Train Travel in Fall and Winter
Small group Alaska Railroad trip, Anchorage to Fairbanks, chasing the northern lights
Amtrak Vacations
Off-season 5-day Yellowstone trip from Salt Lake City for winter wildlife

Amtrak Vacations built Yellowstone in the Winter around the quieter months at Yellowstone National Park, running November through March. The 5-day, 4-night trip starts in Salt Lake City and ends inside the park at West Yellowstone, with a roundtrip transfer covering the drive between the two. Once in the park, an included sightseeing tour, the Old Faithful Explorer Tour in winter months, takes travelers past the geothermal features that the operator says stand out most starkly against snow and ice. The highlights named are wildlife spotting, including wolves in Lamar Valley, and the low winter crowds compared to peak season. The operator does not publish a day-by-day breakdown of the four hotel nights between the two stops, and the $1,169 per-person starting price does not include rail travel to Salt Lake City, which is booked separately.

Alaska Tours (alaskatours.com)
Small group Alaska Railroad trip, Anchorage to Fairbanks, chasing the northern lights

Amtrak Vacations
5-day Chicago roundtrip rail getaway to Arches and Canyonlands parks

Amtrak Vacations
5-day San Francisco roundtrip rail getaway to Arches and Canyonlands parks