*ALL-IN fares includes taxes, fees, and surcharges except applicable Philippine Travel Tax which at passenger's option can be added separately during or after the booking.
Seattle to Saint Louis Flights on Philippine Airlines!
Our Most Searched Flights from Seattle to Saint Louis
Enjoy amazing fare deals Seattle Saint Louis!
Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Quoted fares includes taxes, fees, and surcharges except PH Travel Tax which is added at the passenger's option during or after the booking.
Enjoy amazing Business Class fares Seattle Saint Louis!
Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Quoted fares includes taxes, fees, and surcharges except PH Travel Tax which is added at the passenger's option during or after the booking.
Enjoy amazing fare deals Seattle Saint Louis!
Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Quoted fares includes taxes, fees, and surcharges except PH Travel Tax which is added at the passenger's option during or after the booking.
Best Flights Deals by Popularity from Seattle to Saint Louis
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Quoted fares includes taxes, fees, and surcharges except PH Travel Tax paid at the airport.