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Route overview: Saint Louis to Baltimore (BWI) flight deals

Saint Louis → Baltimore

Dec 21, 2026 · return Jan 4, 2027

STL → BWI1 adulteconomyRound trip

6 flight options · 4 airlines

One-stop flights

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
10:35 amSTL
4h 20m
BNA · 1h 35m
3:55 pmBWI
Southwest Airlines
2:30 pmBWI
6h
RDU · 2h 40m
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

United Airlines
1:18 pmSTL
4h 51m
ORD · 1h 18m
7:09 pmBWI
Southwest Airlines
2:30 pmBWI
6h
RDU · 2h 40m
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

American Airlines
11:37 amSTL
5h 8m
ORD · 1h 38m
5:45 pmBWI
American Airlines
2:26 pmBWI
6h 4m
CLT · 2h 27m
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Delta Air Lines
10:06 amSTL
4h 37m
ATL · 1h 23m
3:43 pmBWI
Delta Air Lines
12:18 pmBWI
6h 2m
DTW · 2h 38m
5:20 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
12:40 pmSTL
1h 50m
Nonstop
3:30 pmBWI
Southwest Airlines
2:30 pmBWI
6h
RDU · 2h 40m
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Delta Air Lines
6:06 pmSTL
4h 21m
DTW · 1h 9m
11:27 pmBWI
Delta Air Lines
12:18 pmBWI
6h 2m
DTW · 2h 38m
5:20 pmSTL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ BWI

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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All dates for this routeDec 20, 2026 → Jan 3, 2027Dec 22, 2026 → Jan 5, 2027
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Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Route overview: Saint Louis to Baltimore (BWI) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 → 2027-01-04Southwest AirlinesWN665 + WN477 / WN237 + WN1459$326.252026-10-29T01:28:19Z
2026-12-21 → 2027-01-04United Airlines / Southwest AirlinesUA714 + UA399 / WN237 + WN1459$358.752026-10-29T01:28:19Z
2026-12-21 → 2027-01-04American AirlinesAA3198 + AA4527 / AA2316 + AA2937$371.252026-10-29T01:28:19Z
2026-12-21 → 2027-01-04Delta Air LinesDL1571 + DL2799 / DL1546 + DL2822$393.752026-10-29T01:28:19Z
2026-12-21 → 2027-01-04Southwest AirlinesWN2834 / WN237 + WN1459$339.252026-10-29T01:28:19Z
2026-12-21 → 2027-01-04Delta Air LinesDL2822 + DL2715 / DL1546 + DL2822$393.752026-10-29T01:28:19Z

2026-12-21 → 2027-01-04 · $326.25

  • Southwest Airlines WN665 / WN477: STL 2026-12-21 10:35:00 → BWI 2026-12-21 15:55:00; 1 stop(s) via BNA; 260 minutes. Local airport times.
    • WN665: STL 2026-12-21 10:35:00 → BNA 2026-12-21 11:40:00; layover at BNA: 95 minutes.
    • WN477: BNA 2026-12-21 13:15:00 → BWI 2026-12-21 15:55:00.
  • Southwest Airlines WN237 / WN1459: BWI 2027-01-04 14:30:00 → STL 2027-01-04 19:30:00; 1 stop(s) via RDU; 360 minutes. Local airport times.
    • WN237: BWI 2027-01-04 14:30:00 → RDU 2027-01-04 15:40:00; layover at RDU: 160 minutes.
    • WN1459: RDU 2027-01-04 18:20:00 → STL 2027-01-04 19:30:00.

2026-12-21 → 2027-01-04 · $358.75

  • United Airlines UA714 / UA399: STL 2026-12-21 13:18:00 → BWI 2026-12-21 19:09:00; 1 stop(s) via ORD; 291 minutes. Local airport times.
    • UA714: STL 2026-12-21 13:18:00 → ORD 2026-12-21 14:47:00; layover at ORD: 78 minutes.
    • UA399: ORD 2026-12-21 16:05:00 → BWI 2026-12-21 19:09:00.
  • Southwest Airlines WN237 / WN1459: BWI 2027-01-04 14:30:00 → STL 2027-01-04 19:30:00; 1 stop(s) via RDU; 360 minutes. Local airport times.
    • WN237: BWI 2027-01-04 14:30:00 → RDU 2027-01-04 15:40:00; layover at RDU: 160 minutes.
    • WN1459: RDU 2027-01-04 18:20:00 → STL 2027-01-04 19:30:00.

2026-12-21 → 2027-01-04 · $371.25

  • American Airlines AA3198 / AA4527: STL 2026-12-21 11:37:00 → BWI 2026-12-21 17:45:00; 1 stop(s) via ORD; 308 minutes. Local airport times.
    • AA3198: STL 2026-12-21 11:37:00 → ORD 2026-12-21 12:59:00; layover at ORD: 98 minutes.
    • AA4527: ORD 2026-12-21 14:37:00 → BWI 2026-12-21 17:45:00.
  • American Airlines AA2316 / AA2937: BWI 2027-01-04 14:26:00 → STL 2027-01-04 19:30:00; 1 stop(s) via CLT; 364 minutes. Local airport times.
    • AA2316: BWI 2027-01-04 14:26:00 → CLT 2027-01-04 16:00:00; layover at CLT: 147 minutes.
    • AA2937: CLT 2027-01-04 18:27:00 → STL 2027-01-04 19:30:00.

2026-12-21 → 2027-01-04 · $393.75

  • Delta Air Lines DL1571 / DL2799: STL 2026-12-21 10:06:00 → BWI 2026-12-21 15:43:00; 1 stop(s) via ATL; 277 minutes. Local airport times.
    • DL1571: STL 2026-12-21 10:06:00 → ATL 2026-12-21 12:36:00; layover at ATL: 83 minutes.
    • DL2799: ATL 2026-12-21 13:59:00 → BWI 2026-12-21 15:43:00.
  • Delta Air Lines DL1546 / DL2822: BWI 2027-01-04 12:18:00 → STL 2027-01-04 17:20:00; 1 stop(s) via DTW; 362 minutes. Local airport times.
    • DL1546: BWI 2027-01-04 12:18:00 → DTW 2027-01-04 13:55:00; layover at DTW: 158 minutes.
    • DL2822: DTW 2027-01-04 16:33:00 → STL 2027-01-04 17:20:00.

2026-12-21 → 2027-01-04 · $339.25

  • Southwest Airlines WN2834: STL 2026-12-21 12:40:00 → BWI 2026-12-21 15:30:00; nonstop; 110 minutes. Local airport times.
  • Southwest Airlines WN237 / WN1459: BWI 2027-01-04 14:30:00 → STL 2027-01-04 19:30:00; 1 stop(s) via RDU; 360 minutes. Local airport times.
    • WN237: BWI 2027-01-04 14:30:00 → RDU 2027-01-04 15:40:00; layover at RDU: 160 minutes.
    • WN1459: RDU 2027-01-04 18:20:00 → STL 2027-01-04 19:30:00.

2026-12-21 → 2027-01-04 · $393.75

  • Delta Air Lines DL2822 / DL2715: STL 2026-12-21 18:06:00 → BWI 2026-12-21 23:27:00; 1 stop(s) via DTW; 261 minutes. Local airport times.
    • DL2822: STL 2026-12-21 18:06:00 → DTW 2026-12-21 20:45:00; layover at DTW: 69 minutes.
    • DL2715: DTW 2026-12-21 21:54:00 → BWI 2026-12-21 23:27:00.
  • Delta Air Lines DL1546 / DL2822: BWI 2027-01-04 12:18:00 → STL 2027-01-04 17:20:00; 1 stop(s) via DTW; 362 minutes. Local airport times.
    • DL1546: BWI 2027-01-04 12:18:00 → DTW 2027-01-04 13:55:00; layover at DTW: 158 minutes.
    • DL2822: DTW 2027-01-04 16:33:00 → STL 2027-01-04 17:20:00.

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