
Flights from St. Louis to Boston
Cheapest flights from St. Louis
These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$174 Roundtrip, found 10 hours ago
$174
Roundtrip
found 10 hours ago

Fri, Aug 15 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$179 Roundtrip, found 14 hours ago
$179
Roundtrip
found 14 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$183 Roundtrip, found 10 hours ago
$183
Roundtrip
found 10 hours ago

Sun, Aug 17 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$187 Roundtrip, found 14 hours ago
$187
Roundtrip
found 14 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$189 Roundtrip, found 10 hours ago
$189
Roundtrip
found 10 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$192 Roundtrip, found 10 hours ago
$192
Roundtrip
found 10 hours ago

Fri, Aug 15 - Wed, Aug 27
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$197 Roundtrip, found 14 hours ago
$197
Roundtrip
found 14 hours ago

Mon, Aug 18 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago

Fri, Aug 15 - Sat, Aug 23
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$207 Roundtrip, found 14 hours ago
$207
Roundtrip
found 14 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$208 Roundtrip, found 10 hours ago
$208
Roundtrip
found 10 hours ago

Thu, Aug 14 - Mon, Aug 18
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$209 Roundtrip, found 10 hours ago
$209
Roundtrip
found 10 hours ago

Tue, Aug 12 - Wed, Aug 27
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$215 Roundtrip, found 14 hours ago
$215
Roundtrip
found 14 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$217 Roundtrip, found 10 hours ago
$217
Roundtrip
found 10 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$217 Roundtrip, found 10 hours ago
$217
Roundtrip
found 10 hours ago

Thu, Aug 14 - Thu, Aug 21
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$217 Roundtrip, found 15 hours ago
$217
Roundtrip
found 15 hours ago

Thu, Aug 14 - Mon, Aug 18
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$218 Roundtrip, found 10 hours ago
$218
Roundtrip
found 10 hours ago

Sun, Aug 17 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$222 Roundtrip, found 1 day ago
$222
Roundtrip
found 1 day ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$223 Roundtrip, found 10 hours ago
$223
Roundtrip
found 10 hours ago

Thu, Aug 14 - Sun, Aug 24
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$225 Roundtrip, found 10 hours ago
$225
Roundtrip
found 10 hours ago

Thu, Aug 14 - Mon, Aug 25
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$226 Roundtrip, found 10 hours ago
$226
Roundtrip
found 10 hours ago