The average flight time from Seattle to Missouri is 4 hours 10 minutes. Distance from Seattle to Missouri is 1,671 miles / 2,689 km. Seattle is served by 2 airports Seattle Boeing Field , Seattle Tacoma International Airport.How do you purchase plane tickets?
If you have a specific airline in mind, you can simply go to that airline’s website. All major airlines allow you to purchase tickets directly through their website. You can specify dates and departure/arrival sites, and be presented with options for price and time of day. You can also go through an online travel site.