$138 Cheap Spirit Airlines flights St. Louis (STL) to Boston (BOS)

$138 Cheap Spirit Airlines flights St. Louis (STL) to Boston (BOS)

Prices were available within the past 7 days and start at $138 for one-way flights and $199 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 20 - Sat, Oct 25

STL

St. Louis

BOS

Boston

$199 Roundtrip, found 3 days ago

$199

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Mon, Oct 20 from St. Louis to Boston, returning Sat, Oct 25, priced at $199 found 3 days ago

Thu, Oct 23 - Sat, Oct 25

STL

St. Louis

BOS

Boston

$209 Roundtrip, found 3 days ago

$209

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Oct 23 from St. Louis to Boston, returning Sat, Oct 25, priced at $209 found 3 days ago

Thu, Oct 2 - Thu, Oct 9

STL

St. Louis

BOS

Boston

$219 Roundtrip, found 18 hours ago

$219

Roundtrip

found 18 hours ago

Select Spirit Airlines flight, departing Thu, Oct 2 from St. Louis to Boston, returning Thu, Oct 9, priced at $219 found 18 hours ago

Sun, Sep 28 - Sun, Oct 5

STL

St. Louis

BOS

Boston

$224 Roundtrip, found 18 hours ago

$224

Roundtrip

found 18 hours ago

Select Spirit Airlines flight, departing Sun, Sep 28 from St. Louis to Boston, returning Sun, Oct 5, priced at $224 found 18 hours ago

Thu, Oct 2 - Sat, Oct 4

STL

St. Louis

BOS

Boston

$237 Roundtrip, found 18 hours ago

$237

Roundtrip

found 18 hours ago

Select Spirit Airlines flight, departing Thu, Oct 2 from St. Louis to Boston, returning Sat, Oct 4, priced at $237 found 18 hours ago

Sun, Sep 28 - Thu, Oct 9

STL

St. Louis

BOS

Boston

$244 Roundtrip, found 18 hours ago

$244

Roundtrip

found 18 hours ago

Select Spirit Airlines flight, departing Sun, Sep 28 from St. Louis to Boston, returning Thu, Oct 9, priced at $244 found 18 hours ago

Tue, Oct 21 - Sat, Oct 25

STL

St. Louis

BOS

Boston

$247 Roundtrip, found 3 days ago

$247

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Tue, Oct 21 from St. Louis to Boston, returning Sat, Oct 25, priced at $247 found 3 days ago

Thu, Oct 23 - Mon, Oct 27

STL

St. Louis

BOS

Boston

$255 Roundtrip, found 3 days ago

$255

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Oct 23 from St. Louis to Boston, returning Mon, Oct 27, priced at $255 found 3 days ago

Thu, Oct 23 - Tue, Oct 28

STL

St. Louis

BOS

Boston

$257 Roundtrip, found 3 days ago

$257

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Oct 23 from St. Louis to Boston, returning Tue, Oct 28, priced at $257 found 3 days ago

Sun, Sep 28 - Sat, Oct 4

STL

St. Louis

BOS

Boston

$262 Roundtrip, found 18 hours ago

$262

Roundtrip

found 18 hours ago

Select Spirit Airlines flight, departing Sun, Sep 28 from St. Louis to Boston, returning Sat, Oct 4, priced at $262 found 18 hours ago