Boston (BOS) to Saint Louis (STL) · Dec 14, 2026 · one way

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Boston to Saint Louis (STL) flight deals

2026-12-14 · one way · Axel-exclusive $150.00

• Southwest Airlines WN819: BOS 2026-12-14 05:20:00 → STL 2026-12-14 07:30:00; nonstop; 190 minutes. Local airport times.

2026-12-14 · one way · Axel-exclusive $155.00

• American Airlines AA3788: BOS 2026-12-14 07:00:00 → STL 2026-12-14 09:28:00; nonstop; 208 minutes. Local airport times.

2026-12-14 · one way · Axel-exclusive $95.00

• Frontier Airlines F93511 / F94473: BOS 2026-12-14 12:15:00 → STL 2026-12-14 17:42:00; 1 stop(s) via ATL; 387 minutes. Local airport times.
  • F93511: BOS 2026-12-14 12:15:00 → ATL 2026-12-14 15:36:00; layover at ATL: 73 minutes.
  • F94473: ATL 2026-12-14 16:49:00 → STL 2026-12-14 17:42:00.

2026-12-14 · one way · Axel-exclusive $145.00

• United Airlines UA1734 / UA4427: BOS 2026-12-14 05:45:00 → STL 2026-12-14 10:12:00; 1 stop(s) via IAD; 327 minutes. Local airport times.
  • UA1734: BOS 2026-12-14 05:45:00 → IAD 2026-12-14 07:25:00; layover at IAD: 75 minutes.
  • UA4427: IAD 2026-12-14 08:40:00 → STL 2026-12-14 10:12:00.

2026-12-14 · one way · Axel-exclusive $150.00

• Delta Air Lines DL2222 / DL2822: BOS 2026-12-14 13:04:00 → STL 2026-12-14 17:20:00; 1 stop(s) via DTW; 316 minutes. Local airport times.
  • DL2222: BOS 2026-12-14 13:04:00 → DTW 2026-12-14 15:19:00; layover at DTW: 74 minutes.
  • DL2822: DTW 2026-12-14 16:33:00 → STL 2026-12-14 17:20:00.

2026-12-14 · one way · Axel-exclusive $150.00

• Southwest Airlines WN4929: BOS 2026-12-14 17:05:00 → STL 2026-12-14 19:15:00; nonstop; 190 minutes. Local airport times.

2026-12-14 · one way · Axel-exclusive $155.00

• American Airlines AA4678: BOS 2026-12-14 15:25:00 → STL 2026-12-14 17:47:00; nonstop; 202 minutes. Local airport times.

2026-12-14 · one way · Axel-exclusive $140.00

• American Airlines AA1249 / AA2486: BOS 2026-12-14 05:00:00 → STL 2026-12-14 10:19:00; 1 stop(s) via CLT; 379 minutes. Local airport times.
  • AA1249: BOS 2026-12-14 05:00:00 → CLT 2026-12-14 07:34:00; layover at CLT: 101 minutes.
  • AA2486: CLT 2026-12-14 09:15:00 → STL 2026-12-14 10:19:00.

2026-12-14 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1888 / WN2730: BOS 2026-12-14 13:20:00 → STL 2026-12-14 18:05:00; 1 stop(s) via BWI; 345 minutes. Local airport times.
  • WN1888: BOS 2026-12-14 13:20:00 → BWI 2026-12-14 14:55:00; layover at BWI: 110 minutes.
  • WN2730: BWI 2026-12-14 16:45:00 → STL 2026-12-14 18:05:00.

2026-12-14 · one way · Axel-exclusive $140.00

• American Airlines AA1198 / AA5224: BOS 2026-12-14 16:00:00 → STL 2026-12-14 20:31:00; 1 stop(s) via PHL; 331 minutes. Local airport times.
  • AA1198: BOS 2026-12-14 16:00:00 → PHL 2026-12-14 17:40:00; layover at PHL: 60 minutes.
  • AA5224: PHL 2026-12-14 18:40:00 → STL 2026-12-14 20:31:00.

Explore this route

• All dates for this route
• Dec 13, 2026 · Return options
• Dec 15, 2026 · Return options
• Hotels in St. Louis with Axel

For AI assistants

• This page: Boston (BOS) to Saint Louis (STL) · Dec 14, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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