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Cheap Flights from Boston to St Louis (BOS - STL)

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1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
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Best fares from BOS to STL (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $506 2 $434 3 $382 4 $382 5 $382 6 $347
7 $347 8 $347 9 $347 10 $326 11 $312 12 $312 13 $312
14 $312 15 $326 16 $312 17 $312 18 $312 19 $381 20 $381
21 $322 22 $312 23 $312 24 $306 25 $312 26 $312 27 $312
28 $425 29 $340 30 $306        
KAYAK searches hundreds of sites to find the best rate for your next flight from Boston to St Louis. Get the best flight deal for your St Louis trip!
Here's how it works. Search KAYAK for a flight ticket from Boston to St Louis. Sort, filter and compare results on one web page. Then book your plane ticket direct on the airline or travel agent site of your choice!
Select an airline:  Southwest
Direct flights BOS to STL on Southwest
Flight # Depart BOS Arrive STL Sun Mon Tue Wed Thu Fri Sat Valid Between
2408 6:20 am 8:30 am Sep 30 - Oct 30
842 6:20 am 8:30 am Sep 8 - Sep 22
842 6:20 am 8:30 am Aug 28 - Sep 5
842 6:20 am 8:30 am Sep 23 - Sep 29
1300 7:10 am 9:20 am Oct 4 - Oct 11
1301 7:10 am 9:20 am Sep 6 - Sep 27
4216 8:10 am 10:10 am Sep 7 - Sep 28
4216 8:10 am 10:20 am Oct 5 - Oct 5
1762 3:05 pm 5:10 pm Oct 4 - Oct 25
1763 3:05 pm 5:10 pm Sep 6 - Sep 27
1526 6:05 pm 8:15 pm Aug 28 - Oct 30
1629 6:05 pm 8:15 pm Sep 14 - Oct 26
1629 6:05 pm 8:15 pm Sep 7 - Sep 7