St Louis to Boston
STLBOS
Fly from St Louis to Boston starting at SAR 559 with Frontier Airlines.
Best fare available on Sep 18, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Boston cheapest flights this week
St Louis to Boston monthly flight fare trend
Sep
from SAR 559
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
Boston
Logan International Airport (BOS)
Boston, BOS
Zone
New York
Elev
20 ft
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