@SFOMuseum Instagram Posts Tagged themainline This is SFO Museum's archive of the @SFOMuseum Instagram account. There are 27 posts and this is page 3 of 3. See all the tags or all the Instagram posts that have been archived so far.

In the decade between the late-1930s and late-1940s, United Air Lines introduced a series of modern airliners that elevated air travel to new levels of speed and comfort. This image was posted on August 11, 2017. #themainline #flyingthemainline #united #unitedairlines #travelposter #travel #instatravel #avgeek #avationgeek #aviation #aviationhistory #aviationlovers #vintageaviation #history #avhistory #aviationgeeks #instaplane #flying #plane #flight #airline #avgeeks #aviation4u #aviationdaily #travelposter #hawaii

United Airlines traces its origin to the mid-1920s, with the establishment of four airmail routes that would later become the backbone of United’s route system. This image was posted on July 08, 2017. #united #unitedairlines #themainline #avgeek #aviationhistory #flyingthemainline #airmail

Over ninety years ago, at the dawn of commercial aviation, four companies merged into a single airline that became a preeminent U.S. carrier. This image was posted on June 30, 2017. #united #unitedairlines #themainline #avgeek #aviationhistory