Baltimore to St Louis (BWI–STL) — Airlines, Schedules & Connections

BWI Airport Page →
736 mi airlines 50/wk
On-time Some delays Frequent delays
Flight Schedule 25 flights Verified 18m ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
WN3191
WN Southwest
738
6:05 AM
EDT
7:35 AM
EDT
2h 30m
M T W T F S S
Prices
WN1333
WN Southwest
73H
6:10 AM
EDT
7:30 AM
EDT
2h 20m
M T W T F S S
Prices
WN1565
WN Southwest
73H
8:35 AM
EDT
10:00 AM
EDT
2h 25m
M T W T F S S
Prices
WN1557
WN Southwest
7M8
9:20 AM
EDT
10:50 AM
EDT
2h 30m
M T W T F S S
Prices
WN1335
WN Southwest
7M8
9:30 AM
EDT
10:50 AM
EDT
2h 20m
M T W T F S S
Prices
WN2496
WN Southwest
7S7
9:45 AM
EDT
11:05 AM
EDT
2h 20m
M T W T F S S
Prices
WN1337
WN Southwest
73H
1:55 PM
EDT
3:15 PM
EDT
2h 20m
M T W T F S S
Prices
WN3835
WN Southwest
7M8
4:25 PM
EDT
5:50 PM
EDT
2h 25m
M T W T F S S
Prices
WN987
WN Southwest
7M8
7:40 PM
EDT
9:05 PM
EDT
2h 25m
M T W T F S S
Prices
WN1788
WN Southwest
73H
9:40 PM
EDT
11:05 PM+1
EDT
2h 25m
M T W T F S S
Prices
WN1947
WN Southwest
12:48 AM
EDT
3:36 AM
EDT
2h 48m
M T W T F S S
Prices
WN2741
WN Southwest
B38M
5:55 AM
EDT T2
8:52 AM
EDT
2h 57m
M T W T F S S
Prices
WN4131
WN Southwest
73H
6:15 AM
EDT T2
9:15 AM
EDT
2h
M T W T F S S
Prices
WN4440
WN Southwest
7M8
6:35 AM
EDT T2
9:40 AM
EDT
2h 5m
M T W T F S S
Prices
WN1769
WN Southwest
7S7
8:20 AM
EDT T2
11:25 AM
EDT
2h 5m
M T W T F S S
Prices
WN3881
WN Southwest
10:32 AM
EDT
2:21 PM
EDT
3h 49m
M T W T F S S
Prices
WN2098
WN Southwest
7S7
11:15 AM
EDT T2
2:15 PM
EDT
2h
M T W T F S S
Prices
WN2523
WN Southwest
7M8
12:45 PM
EDT T2
3:32 PM
EDT
2h 47m
M T W T F S S
Prices
WN2737
WN Southwest
7S7
1:15 PM
EDT T2
4:20 PM
EDT
2h 5m
M T W T F S S
Prices
WN2390
WN Southwest
737
1:40 PM
EDT T2
4:40 PM
EDT
2h
M T W T F S S
Prices
WN3144
WN Southwest
7S7
4:00 PM
EDT T2
7:05 PM
EDT
2h 5m
M T W T F S S
Prices
WN1511
WN Southwest
B38M
4:55 PM
EDT T2
7:50 PM
EDT
1h 55m
M T W T F S S
Prices
WN4442
WN Southwest
7S7
6:45 PM
EDT T2
9:45 PM
EDT
2h
M T W T F S S
Prices
WN4633
WN Southwest
B38M
7:40 PM
EDT T2
10:35 PM
EDT
1h 55m
M T W T F S S
Prices
WN1555
WN Southwest
7S7
8:00 PM
EDT T2
11:00 PM
EDT
2h
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
2-STOP Loading...
Baltimore to St Louis
1 carrier, 50 flights/week nonstop.
1 Airlines 50 Flights/wk 736 mi 2h 20m nonstop 78 1-stop hubs

BWI–STL is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 736 miles in approximately 2h 20m. Beyond nonstop, 78 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop BWI–STL service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 50 738, 73H, 7M8, 7S7 2h20-2h30 53%
Aircraft on this route
738 Boeing 737-800 – WN
73H Boeing 737-800 – WN
7M8 Boeing 737 MAX 8 – WN
7S7 Boeing 737 MAX 7 – WN
Alliance coverage
Unaffiliated: WN (50 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, BWI to STL direction.
Mon
8
flights
Tue
6
flights
Wed
6
flights
Thu
8
flights
Fri
8
flights
Sat
6
flights
Sun
8
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
10
Nonstop flights
50
Outbound / wk
52
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for BWI to STL.
1-STOP
One-Stop Connections
78
Hubs
~3h
Fastest
~37h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,786
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.

On-Time Performance

What to expect at each end of your journey.
Outbound
BWI → STL
53%
Frequent delays expected. Consider flexible booking.
Departing
53%
Arriving
87%
Return
STL → BWI
68%
Moderate delays possible. Allow buffer time.
Departing
68%
Arriving
79%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. BWI delays → STL delays →

Other ways to reach St Louis from Baltimore

Nearby airports with service to St. Louis Lambert International Airport.
Metric BWI→STL DCA→STL IAD→STL
Distance from BWI 30 mi 45 mi
Nonstop airlines 1 3 5
Weekly flights 50 85 44
Flight time 2h 20m 1h 0h 50m
Departure OTP 53%
Airports within 200 miles of BWI with service to St. Louis Lambert International Airport.

Travel Essentials

Practical planning for this route.
Time Difference
0h
St Louis is 0 hours the same as Baltimore.
BWI: EDT · STL: EDT

When it's 6:00 PM in Baltimore, it's 6:00 PM in St Louis.
Distance & Flight Time
736 mi / 1,184 km
Nonstop flight time is approximately 2h 20m to 2h 30m.

BWI–STL Quick Facts

Key statistics for the Baltimore to St Louis route.
Route details
Distance736 mi / 1,184 km
Flight time2h 20m to 2h 30m
Time difference0 hours
Airlines (nonstop)1
Weekly flights50 out / 52 return
1-stop connections78 hubs
Origin: BWI
IATA / ICAOBWI / KBWI
TimezoneAmerica/New_York
Passengers/yr26.4M
Elevation146 ft / 45 m
Destination: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Indiana/Vincennes
Passengers/yr15.6M
Elevation618 ft / 188 m

Frequently Asked Questions

Common questions about BWI to STL flights.
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to St. Louis Lambert International Airport take approximately 2h 20m to 2h 30m. The route covers 736 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 50 nonstop flights per week from BWI to STL. The return direction has about 52 weekly flights.
Yes, 1-stop connections are available through BUF, TEB, YYZ, ORF, HPN, BDL, IAD, HYA, LIT, PIE, GRR, PDK, DSM, APF, BCT, EYW, PHL, NAS, SAF, ASE, OKC, RIL, BZN, SCF, VPS, SJC, CUN, LGA, CLE, CMH, PIT, EWR, RDU, BNA, MDW, DTW, SJU, MEM, ORD, DAL, JAX, MCI, ATL, MCO, BOS, DEN, IND, ECP, MSY, IAH, CLT, SEA, RSW, MIA, MSP, HOU, MKE, FLL, SRQ, MYR, PHX, TPA, SAT, SMF, CHS, LAS, SLC, SAV, PBI, DFW, AUS, SAN, SFO, LAX, LUK, PUJ, SJD and CVG. These options provide additional schedule flexibility.
Yes, return flights from STL to BWI are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include DCA, IAD and PHL. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from BWI to STL

Baltimore/Washington International Thurgood Marshall Airport (BWI) and St. Louis Lambert International Airport (STL) are connected by nonstop service from Southwest Airlines. With 50 weekly departures, this is a heavily served route.

BWI to STL Flight Duration and Schedule

Nonstop flight time from BWI to STL ranges from 2 hours 20 minutes to 2 hours 30 minutes. The route covers a distance of 736 miles (1,184 km). There are approximately 50 weekly flights outbound and 52 return, totaling 102 flights per week in both directions.

Connecting Options and Alternatives

78 one-stop connections are available, with the fastest taking approximately 3 hours via BUF. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Washington (DCA), Dulles (IAD) and Philadelphia (PHL).