$173 Cheap Spirit Airlines flights St. Louis (STL) to Boston (BOS)

$173 Cheap Spirit Airlines flights St. Louis (STL) to Boston (BOS)

Prices were available within the past 7 days and start at $173 for one-way flights and $262 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jul 31 - Wed, Aug 13

STL

St. Louis

BOS

Boston

$262 Roundtrip, found 1 day ago

$262

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Jul 31 from St. Louis to Boston, returning Wed, Aug 13, priced at $262 found 1 day ago

Tue, Aug 5 - Wed, Aug 13

STL

St. Louis

BOS

Boston

$265 Roundtrip, found 1 day ago

$265

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Tue, Aug 5 from St. Louis to Boston, returning Wed, Aug 13, priced at $265 found 1 day ago

Thu, Jul 17 - Wed, Jul 23

STL

St. Louis

BOS

Boston

$279 Roundtrip, found 11 hours ago

$279

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Jul 17 from St. Louis to Boston, returning Wed, Jul 23, priced at $279 found 11 hours ago

Thu, Jul 31 - Tue, Aug 12

STL

St. Louis

BOS

Boston

$282 Roundtrip, found 1 day ago

$282

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Jul 31 from St. Louis to Boston, returning Tue, Aug 12, priced at $282 found 1 day ago

Sun, Aug 3 - Wed, Aug 13

STL

St. Louis

BOS

Boston

$285 Roundtrip, found 1 day ago

$285

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Aug 3 from St. Louis to Boston, returning Wed, Aug 13, priced at $285 found 1 day ago

Mon, Jul 14 - Wed, Jul 23

STL

St. Louis

BOS

Boston

$299 Roundtrip, found 11 hours ago

$299

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Mon, Jul 14 from St. Louis to Boston, returning Wed, Jul 23, priced at $299 found 11 hours ago

Tue, Jul 15 - Sat, Jul 19

STL

St. Louis

BOS

Boston

$302 Roundtrip, found 11 hours ago

$302

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Tue, Jul 15 from St. Louis to Boston, returning Sat, Jul 19, priced at $302 found 11 hours ago

Sun, Aug 3 - Tue, Aug 12

STL

St. Louis

BOS

Boston

$305 Roundtrip, found 1 day ago

$305

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Aug 3 from St. Louis to Boston, returning Tue, Aug 12, priced at $305 found 1 day ago

Sun, Aug 3 - Wed, Aug 13

STL

St. Louis

BOS

Boston

$311 Roundtrip, found 1 day ago

$311

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Aug 3 from St. Louis to Boston, returning Wed, Aug 13, priced at $311 found 1 day ago

Thu, Jul 31 - Sun, Aug 10

STL

St. Louis

BOS

Boston

$319 Roundtrip, found 1 day ago

$319

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Jul 31 from St. Louis to Boston, returning Sun, Aug 10, priced at $319 found 1 day ago

Sat, Aug 2 - Thu, Aug 14

STL

St. Louis

BOS

Boston

$322 Roundtrip, found 1 day ago

$322

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sat, Aug 2 from St. Louis to Boston, returning Thu, Aug 14, priced at $322 found 1 day ago