Cheap flights from Baltimore to Northeast Missouri

View AU$137 flight on Wed, 27 Aug. 2025Opens in a new window

Popular airlines from Baltimore to Northeast Missouri

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Baltimore (WAS) to Northeast Missouri (STL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 6 Sep. - Sat, 13 Sep.
BWI
Baltimore
STL
St. Louis
AU$272 Return, found 1 day ago
AU$272
Return
found 1 day ago
Select American Airlines flight, departing Sat, 6 Sep. from Baltimore to St. Louis, returning Sat, 13 Sep., priced at AU$272 found 1 day ago
American Airlines
Sat, 6 Sep. - Sat, 13 Sep.
DCA
Washington
STL
St. Louis
AU$275 Return, found 1 day ago
AU$275
Return
found 1 day ago
Select American Airlines flight, departing Sat, 6 Sep. from Washington to St. Louis, returning Sat, 13 Sep., priced at AU$275 found 1 day ago
Delta
Sat, 6 Sep. - Sat, 13 Sep.
DCA
Washington
STL
St. Louis
AU$305 Return, found 1 day ago
AU$305
Return
found 1 day ago
Select Delta flight, departing Sat, 6 Sep. from Washington to St. Louis, returning Sat, 13 Sep., priced at AU$305 found 1 day ago
American Airlines
Sun, 31 Aug. - Sun, 7 Sep.
BWI
Baltimore
STL
St. Louis
AU$307 Return, found 6 days ago
AU$307
Return
found 6 days ago
Select American Airlines flight, departing Sun, 31 Aug. from Baltimore to St. Louis, returning Sun, 7 Sep., priced at AU$307 found 6 days ago
American Airlines
Sat, 6 Sep. - Sat, 13 Sep.
DCA
Washington
STL
St. Louis
AU$330 Return, found 1 day ago
AU$330
Return
found 1 day ago
Select American Airlines flight, departing Sat, 6 Sep. from Washington to St. Louis, returning Sat, 13 Sep., priced at AU$330 found 1 day ago
United
Sat, 6 Sep. - Sat, 13 Sep.
BWI
Baltimore
STL
St. Louis
AU$383 Return, found 1 day ago
AU$383
Return
found 1 day ago
Select United flight, departing Sat, 6 Sep. from Baltimore to St. Louis, returning Sat, 13 Sep., priced at AU$383 found 1 day ago

Find the cheapest month to fly from Baltimore (BWI) to St. Louis (STL)

September is typically the cheapest month to fly

From AU$196 - AU$703 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.