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

STL Airport Page →
736 mi airlines 52/wk
On-time Some delays Frequent delays
Flight Schedule 25 flights Verified 51m ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
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
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

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
2-STOP Loading...
St Louis to Baltimore
1 carrier, 52 flights/week nonstop.
1 Airlines 52 Flights/wk 736 mi 1h 55m nonstop 71 1-stop hubs

STL–BWI is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 736 miles in approximately 1h 55m. Beyond nonstop, 71 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop STL–BWI service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 52 737, 73H, 7M8, 7S7, B38M 1h55-3h49 80%
Aircraft on this route
737 Boeing 737-700 – WN
73H Boeing 737-800 – WN
7M8 Boeing 737 MAX 8 – WN
7S7 Boeing 737 MAX 7 – WN
B38MWN
Alliance coverage
Unaffiliated: WN (52 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, STL to BWI direction.
Mon
8
flights
Tue
6
flights
Wed
7
flights
Thu
8
flights
Fri
8
flights
Sat
6
flights
Sun
9
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
15
Nonstop flights
52
Outbound / wk
50
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for STL to BWI.
1-STOP
One-Stop Connections
71
Hubs
~4h
Fastest
~37h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,681
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
STL → BWI
80%
Generally reliable. Most flights run on time.
Departing
80%
Arriving
80%
Return
BWI → STL
34%
Frequent delays expected. Consider flexible booking.
Departing
34%
Arriving
100%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. STL delays → BWI delays →

Travel Essentials

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

When it's 6:00 PM in St Louis, it's 6:00 PM in Baltimore.
Distance & Flight Time
736 mi / 1,184 km
Nonstop flight time is approximately 1h 55m to 3h 49m.

STL–BWI Quick Facts

Key statistics for the St Louis to Baltimore route.
Route details
Distance736 mi / 1,184 km
Flight time1h 55m to 3h 49m
Time difference0 hours
Airlines (nonstop)1
Weekly flights52 out / 50 return
1-stop connections71 hubs
Origin: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Indiana/Vincennes
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: BWI
IATA / ICAOBWI / KBWI
TimezoneAmerica/New_York
Passengers/yr26.4M
Elevation146 ft / 45 m

Frequently Asked Questions

Common questions about STL to BWI flights.
Nonstop flights from St. Louis Lambert International Airport to Baltimore/Washington International Thurgood Marshall Airport take approximately 1h 55m to 3h 49m. The route covers 736 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 52 nonstop flights per week from STL to BWI. The return direction has about 50 weekly flights.
Yes, 1-stop connections are available through IAD, DCA, YIP, MKC, CVG, TEB, BHM, RIC, DSM, BDL, BCT, SUA, NAS, TMB, ASE, BZN, MBJ, GCM, SBD, BFI, SJC, CUN, ORD, VPS, MSP, SLC, CHS, ATL, BNA, SAT, MDW, PIT, EWR, MCI, MKE, CLT, IND, PBI, MCO, MSY, CLE, DAL, MIA, TPA, FLL, HOU, MYR, DEN, AUS, CMH, RDU, IAH, DTW, RSW, SAV, BOS, SAN, SMF, SFO, LAS, SJU, JAX, SRQ, DFW, LAX, PHX, ECP, SEA, ABQ, PUJ and PHL. These options provide additional schedule flexibility.
Yes, return flights from BWI to STL are available. Use the direction toggle at the top to view the return schedule.
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 STL to BWI

St. Louis Lambert International Airport (STL) and Baltimore/Washington International Thurgood Marshall Airport (BWI) are connected by nonstop service from Southwest Airlines. With 52 weekly departures, this is a heavily served route.

STL to BWI Flight Duration and Schedule

Nonstop flight time from STL to BWI ranges from 1 hours 55 minutes to 3 hours 49 minutes. The route covers a distance of 736 miles (1,184 km). There are approximately 52 weekly flights outbound and 50 return, totaling 102 flights per week in both directions.

Connecting Options and Alternatives

71 one-stop connections are available, with the fastest taking approximately 4 hours via IAD. Two-stop connections are also available via intermediate hubs.