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Cheap Flights from Harlingen to St Louis - HRL to STL

Did You Know?

United Airlines has 487 connecting flights between Harlingen, TX and St Louis.
You must make at least one connection to fly from Harlingen, TX to St Louis.

Cheap Domestic Flights from Harlingen - HRL

Flights
Airline
Lowest Price
Sun Country, United
$375
AirTran, Sun Country, United, Delta
$326
United, Delta, AirTran
$321
AirTran, Sun Country, Delta, United
$377
Sun Country, United
$375

Cheap Domestic Flights to St Louis - STL

Flights
Airline
Lowest Price
American, United, Alaska
$218
American, United
$317
American, United, Alaska
$218
American, United
$339
American, United
$318
American, United
$313
American, United
$319
United, American
$318
American, United
$395
American, AirTran, United
$371
United, American
$318
American, United
$318
AirTran, American, United
$373
American, United
$349
American, United
$339
American, United
$292
American, United
$547
American, United
$318

Cheap International Flights to St Louis - STL

Flights
Airline
Lowest Price
LAN, AeroMexico, American, Delta, United
$280
American, United, Delta, AeroMexico
$680
American, AeroMexico, Volaris, United, Delta, LAN
$664
LAN, United, AeroMexico, Delta, American
$683
American, United
$559
Aeromar, United, American
$493
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Cheap Flights from Harlingen to St Louis, from $352 Round trip from HRL to STL