$99 Cheap flights from Valley Intl. to Lambert-St. Louis Intl. (HRL to STL)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Change your flight without a fee on select flights

Find The Best Dates To Fly from Valley Intl. to Lambert-St. Louis Intl.

Compare Flight Prices from Harlingen to St. Louis

Affordable Airfare Tickets from HRL to STL Airport

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $197 round trip and $99 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Aug 5 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$197 Roundtrip, found 4 days ago
$197
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Aug 5 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $197 found 4 days ago
Tue, Aug 5 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Aug 5 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $199 found 4 days ago
Tue, Aug 5 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$205 Roundtrip, found 4 days ago
$205
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Aug 5 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $205 found 4 days ago
Mon, Aug 4 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$228 Roundtrip, found 4 days ago
$228
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Mon, Aug 4 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $228 found 4 days ago
Mon, Aug 4 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$231 Roundtrip, found 4 days ago
$231
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Mon, Aug 4 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $231 found 4 days ago
Mon, Aug 4 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$233 Roundtrip, found 4 days ago
$233
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Mon, Aug 4 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $233 found 4 days ago
Tue, Aug 5 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$235 Roundtrip, found 4 days ago
$235
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Aug 5 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $235 found 4 days ago
Mon, Aug 4 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$236 Roundtrip, found 4 days ago
$236
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Mon, Aug 4 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $236 found 4 days ago
Fri, Aug 22 - Sun, Aug 24
HRL
Harlingen
STL
St. Louis
$239 Roundtrip, found 4 days ago
$239
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Fri, Aug 22 from Harlingen to St. Louis, returning Sun, Aug 24, priced at $239 found 4 days ago
Tue, Aug 5 - Thu, Aug 7
HRL
Harlingen
STL
St. Louis
$241 Roundtrip, found 4 days ago
$241
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Aug 5 from Harlingen to St. Louis, returning Thu, Aug 7, priced at $241 found 4 days ago
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.