Flights from St. Louis to Braintree

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.

$197 Roundtrip, found 11 hours ago

$197

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $197 found 11 hours ago

Thu, Aug 14 - Sun, Aug 17

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$199 Roundtrip, found 3 days ago

$199

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Sun, Aug 17, priced at $199 found 3 days ago

Thu, Aug 14 - Thu, Aug 21

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$207 Roundtrip, found 11 hours ago

$207

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Thu, Aug 21, priced at $207 found 11 hours ago

Thu, Aug 14 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$217 Roundtrip, found 11 hours ago

$217

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $217 found 11 hours ago

Fri, Aug 15 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$219 Roundtrip, found 3 days ago

$219

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Fri, Aug 15 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $219 found 3 days ago

Sun, Aug 17 - Mon, Aug 18

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$224 Roundtrip, found 3 days ago

$224

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Mon, Aug 18, priced at $224 found 3 days ago

Sun, Aug 17 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$227 Roundtrip, found 11 hours ago

$227

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $227 found 11 hours ago

Thu, Aug 14 - Wed, Aug 20

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$236 Roundtrip, found 11 hours ago

$236

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Wed, Aug 20, priced at $236 found 11 hours ago

Tue, Aug 12 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$242 Roundtrip, found 3 days ago

$242

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Tue, Aug 12 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $242 found 3 days ago

Sun, Aug 17 - Wed, Aug 20

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$246 Roundtrip, found 11 hours ago

$246

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Wed, Aug 20, priced at $246 found 11 hours ago

Sun, Aug 17 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$248 Roundtrip, found 11 hours ago

$248

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $248 found 11 hours ago

Thu, Aug 14 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$261 Roundtrip, found 11 hours ago

$261

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Sat, Aug 23, priced at $261 found 11 hours ago

Tue, Aug 12 - Wed, Aug 20

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$265 Roundtrip, found 3 days ago

$265

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Tue, Aug 12 from Lambert-St. Louis Intl. to Logan Intl., returning Wed, Aug 20, priced at $265 found 3 days ago

Fri, Aug 15 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$267 Roundtrip, found 3 days ago

$267

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Fri, Aug 15 from Lambert-St. Louis Intl. to Logan Intl., returning Sat, Aug 23, priced at $267 found 3 days ago

Sun, Aug 17 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$271 Roundtrip, found 11 hours ago

$271

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Sat, Aug 23, priced at $271 found 11 hours ago

Thu, Aug 14 - Wed, Aug 20

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$273 Roundtrip, found 3 days ago

$273

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Wed, Aug 20, priced at $273 found 3 days ago

Sun, Aug 17 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$282 Roundtrip, found 3 days ago

$282

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Sat, Aug 23, priced at $282 found 3 days ago

Sun, Aug 17 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$291 Roundtrip, found 11 hours ago

$291

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Sun, Aug 17 from Lambert-St. Louis Intl. to Logan Intl., returning Fri, Aug 22, priced at $291 found 11 hours ago

Thu, Aug 14 - Wed, Aug 20

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$329 Roundtrip, found 3 days ago

$329

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Logan Intl., returning Wed, Aug 20, priced at $329 found 3 days ago

Tue, Aug 19 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

BOS

Logan Intl.

$347 Roundtrip, found 11 hours ago

$347

Roundtrip

found 11 hours ago

Select United flight, departing Tue, Aug 19 from Lambert-St. Louis Intl. to Logan Intl., returning Sat, Aug 23, priced at $347 found 11 hours ago