Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.
Round-trip from | $302 (Mytrip) |
---|---|
One-way from | $157 (Southwest) |
Popular in | June |
Cheapest in | September |
Average price | $438 |
Good round-trip deal | $373 or less |
Good one-way deal | $210 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Mon 7/28
10:47 am-9:03 am
2 stops21h 16m
Boston Logan Intl
Thu 7/31
6:10 am-4:31 pm
1 stop11h 21m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Fri 8/1
5:40 pm-8:35 am
1 stop13h 55m
Boston Logan Intl
Mon 8/4
8:39 pm-4:31 pm
1 stop20h 52m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Wed 8/13
12:35 pm-4:10 pm
Nonstop2h 35m
Boston Logan Intl
Wed 8/13
6:05 pm-8:00 pm
Nonstop2h 55m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sat 8/30
6:00 am-4:50 pm
1 stop9h 50m
Boston Logan Intl
Mon 9/1
7:00 am-9:15 am
Nonstop3h 15m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sun 9/7
6:00 am-1:20 pm
1 stop6h 20m
Boston Logan Intl
Sun 9/14
5:35 am-9:59 am
1 stop5h 24m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Thu 7/17
5:40 pm-8:35 am
1 stop13h 55m
Boston Logan Intl
Mon 7/21
9:40 am-11:47 pm
1 stop15h 07m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Thu 9/25
12:25 pm-12:50 am
1 stop11h 25m
Boston Logan Intl
Tue 9/30
8:00 am-3:44 pm
2 stops8h 44m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sat 10/4
5:55 pm-9:30 pm
Nonstop2h 35m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sun 9/14
11:00 am-10:44 am
1 stop22h 44m
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Mon 9/22
6:27 am-1:12 pm
1 stop5h 45m
The best time to book flights from St. Louis to Boston is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, January is the cheapest month in which you can book a flight from St. Louis to Boston (average of $218). Flying from St. Louis to Boston in June is currently the most expensive (average of $306). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from St. Louis to Boston in the afternoon. If you’re flexible enough to do this you can expect to save up to 61% on your trip compared to booking a flight at noon.
Travelers seeking maximum savings on their St. Louis to Boston flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from STL to BOS are scheduled on a Sunday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
Crew
Food
Boarding
Comfort
Overall
Entertainment
Reviews
John,May 2025
PVD - BNA
Crew
Food
Boarding
Comfort
Overall
Entertainment
Reviews
John,May 2025
PVD - BNA
Crew
Food
Boarding
Comfort
Overall
Entertainment
Reviews
John,May 2025
PVD - BNA
Crew
Food
Boarding
Comfort
Overall
Entertainment
Reviews
John,May 2025
PVD - BNA
Crew
Food
Boarding
Comfort
Overall
Entertainment
Reviews
John,May 2025
PVD - BNA
Crew
Food
Boarding
Comfort
Overall
Entertainment
Reviews
John,May 2025
PVD - BNA
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$100 | Average$217 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$153 | Average$377 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$168 | Average$261 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$196 | Average$284 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$264 | Average$424 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$309 | Average$451 | FlexibilityNo cancel fee | On-time63% |