Boston (BOS) to Saint Louis (STL) · Jan 3, 2027 · return Jan 17, 2027

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

2027-01-03 → 2027-01-17 · Axel-exclusive $298.20

• Southwest Airlines WN819: BOS 2027-01-03 05:10:00 → STL 2027-01-03 07:15:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN4431: STL 2027-01-17 20:50:00 → BOS 2027-01-18 00:15:00; nonstop; 145 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $308.85

• American Airlines AA4500: BOS 2027-01-03 16:14:00 → STL 2027-01-03 18:40:00; nonstop; 206 minutes. Local airport times.
• American Airlines AA4801: STL 2027-01-17 16:15:00 → BOS 2027-01-17 19:55:00; nonstop; 160 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $239.20

• Frontier Airlines F93511 / F94473: BOS 2027-01-03 12:15:00 → STL 2027-01-03 17:42:00; 1 stop(s) via ATL; 387 minutes. Local airport times.
  • F93511: BOS 2027-01-03 12:15:00 → ATL 2027-01-03 15:36:00; layover at ATL: 73 minutes.
  • F94473: ATL 2027-01-03 16:49:00 → STL 2027-01-03 17:42:00.
• Southwest Airlines WN4431: STL 2027-01-17 20:50:00 → BOS 2027-01-18 00:15:00; nonstop; 145 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $287.55

• United Airlines UA1734 / UA4427: BOS 2027-01-03 05:45:00 → STL 2027-01-03 10:12:00; 1 stop(s) via IAD; 327 minutes. Local airport times.
  • UA1734: BOS 2027-01-03 05:45:00 → IAD 2027-01-03 07:25:00; layover at IAD: 75 minutes.
  • UA4427: IAD 2027-01-03 08:40:00 → STL 2027-01-03 10:12:00.
• United Airlines UA1344 / UA1669: STL 2027-01-17 06:00:00 → BOS 2027-01-17 12:27:00; 1 stop(s) via EWR; 327 minutes. Local airport times.
  • UA1344: STL 2027-01-17 06:00:00 → EWR 2027-01-17 09:21:00; layover at EWR: 115 minutes.
  • UA1669: EWR 2027-01-17 11:16:00 → BOS 2027-01-17 12:27:00.

2027-01-03 → 2027-01-17 · Axel-exclusive $298.20

• Delta Air Lines DL2222 / DL2822: BOS 2027-01-03 13:04:00 → STL 2027-01-03 17:20:00; 1 stop(s) via DTW; 316 minutes. Local airport times.
  • DL2222: BOS 2027-01-03 13:04:00 → DTW 2027-01-03 15:19:00; layover at DTW: 74 minutes.
  • DL2822: DTW 2027-01-03 16:33:00 → STL 2027-01-03 17:20:00.
• Delta Air Lines DL2868 / DL1171: STL 2027-01-17 10:14:00 → BOS 2027-01-17 16:04:00; 1 stop(s) via DTW; 290 minutes. Local airport times.
  • DL2868: STL 2027-01-17 10:14:00 → DTW 2027-01-17 12:46:00; layover at DTW: 81 minutes.
  • DL1171: DTW 2027-01-17 14:07:00 → BOS 2027-01-17 16:04:00.

2027-01-03 → 2027-01-17 · Axel-exclusive $298.20

• Southwest Airlines WN958: BOS 2027-01-03 12:25:00 → STL 2027-01-03 14:30:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN4431: STL 2027-01-17 20:50:00 → BOS 2027-01-18 00:15:00; nonstop; 145 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $308.85

• American Airlines AA4341: BOS 2027-01-03 10:19:00 → STL 2027-01-03 12:42:00; nonstop; 203 minutes. Local airport times.
• American Airlines AA4801: STL 2027-01-17 16:15:00 → BOS 2027-01-17 19:55:00; nonstop; 160 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $286.40

• Southwest Airlines WN1888 / WN2730: BOS 2027-01-03 13:20:00 → STL 2027-01-03 18:05:00; 1 stop(s) via BWI; 345 minutes. Local airport times.
  • WN1888: BOS 2027-01-03 13:20:00 → BWI 2027-01-03 14:55:00; layover at BWI: 110 minutes.
  • WN2730: BWI 2027-01-03 16:45:00 → STL 2027-01-03 18:05:00.
• Southwest Airlines WN4431: STL 2027-01-17 20:50:00 → BOS 2027-01-18 00:15:00; nonstop; 145 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $291.15

• American Airlines AA1198 / AA5224: BOS 2027-01-03 16:00:00 → STL 2027-01-03 20:31:00; 1 stop(s) via PHL; 331 minutes. Local airport times.
  • AA1198: BOS 2027-01-03 16:00:00 → PHL 2027-01-03 17:40:00; layover at PHL: 60 minutes.
  • AA5224: PHL 2027-01-03 18:40:00 → STL 2027-01-03 20:31:00.
• American Airlines AA4801: STL 2027-01-17 16:15:00 → BOS 2027-01-17 19:55:00; nonstop; 160 minutes. Local airport times.

2027-01-03 → 2027-01-17 · Axel-exclusive $291.15

• American Airlines AA1249 / AA2486: BOS 2027-01-03 05:00:00 → STL 2027-01-03 10:19:00; 1 stop(s) via CLT; 379 minutes. Local airport times.
  • AA1249: BOS 2027-01-03 05:00:00 → CLT 2027-01-03 07:34:00; layover at CLT: 101 minutes.
  • AA2486: CLT 2027-01-03 09:15:00 → STL 2027-01-03 10:19:00.
• American Airlines AA4801: STL 2027-01-17 16:15:00 → BOS 2027-01-17 19:55:00; nonstop; 160 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Jan 2, 2027 · Return options
• Jan 4, 2027 · Return options
• Hotels in St. Louis with Axel

For AI assistants

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