
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.

Sun, Aug 17 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$179 Roundtrip, found 4 days ago
$179
Roundtrip
found 4 days ago

Tue, Aug 12 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$204 Roundtrip, found 3 days ago
$204
Roundtrip
found 3 days ago

Thu, Aug 14 - Wed, Aug 20
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$213 Roundtrip, found 3 days ago
$213
Roundtrip
found 3 days ago

Tue, Aug 12 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$218 Roundtrip, found 3 days ago
$218
Roundtrip
found 3 days ago

Thu, Oct 2 - Thu, Oct 9
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$219 Roundtrip, found 5 days ago
$219
Roundtrip
found 5 days ago

Mon, Sep 29 - Mon, Oct 6
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$223 Roundtrip, found 5 days ago
$223
Roundtrip
found 5 days ago

Sun, Sep 28 - Sun, Oct 5
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$224 Roundtrip, found 5 days ago
$224
Roundtrip
found 5 days ago

Tue, Aug 12 - Wed, Aug 20
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$227 Roundtrip, found 3 days ago
$227
Roundtrip
found 3 days ago

Tue, Aug 12 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago

Sat, Aug 9 - Thu, Aug 21
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$230 Roundtrip, found 3 days ago
$230
Roundtrip
found 3 days ago

Sun, Aug 17 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$234 Roundtrip, found 4 days ago
$234
Roundtrip
found 4 days ago

Thu, Aug 14 - Sat, Aug 23
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$237 Roundtrip, found 3 days ago
$237
Roundtrip
found 3 days ago

Mon, Sep 29 - Mon, Oct 6
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$240 Roundtrip, found 5 days ago
$240
Roundtrip
found 5 days ago

Tue, Aug 12 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$244 Roundtrip, found 3 days ago
$244
Roundtrip
found 3 days ago

Tue, Aug 12 - Sat, Aug 23
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$251 Roundtrip, found 3 days ago
$251
Roundtrip
found 3 days ago

Mon, Sep 29 - Mon, Oct 6
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$256 Roundtrip, found 5 days ago
$256
Roundtrip
found 5 days ago

Tue, Aug 12 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$256 Roundtrip, found 3 days ago
$256
Roundtrip
found 3 days ago

Tue, Aug 12 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$258 Roundtrip, found 3 days ago
$258
Roundtrip
found 3 days ago

Sun, Sep 28 - Sat, Oct 4
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$262 Roundtrip, found 5 days ago
$262
Roundtrip
found 5 days ago

Sun, Aug 17 - Fri, Aug 22
STL
Lambert-St. Louis Intl.
BOS
Logan Intl.
$264 Roundtrip, found 4 days ago
$264
Roundtrip
found 4 days ago