Saint Louis (STL) to Boston (BOS) · Dec 19, 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: Saint Louis to Boston (BOS) flight deals

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN570: STL 2026-12-19 08:10:00 → BOS 2026-12-19 11:40:00; nonstop; 150 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $214.50

• American Airlines AA4801: STL 2026-12-19 16:15:00 → BOS 2026-12-19 19:55:00; nonstop; 160 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $201.50

• United Airlines UA1344 / UA1669: STL 2026-12-19 06:00:00 → BOS 2026-12-19 12:27:00; 1 stop(s) via EWR; 327 minutes. Local airport times.
  • UA1344: STL 2026-12-19 06:00:00 → EWR 2026-12-19 09:21:00; layover at EWR: 115 minutes.
  • UA1669: EWR 2026-12-19 11:16:00 → BOS 2026-12-19 12:27:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Delta Air Lines DL2868 / DL1171: STL 2026-12-19 10:14:00 → BOS 2026-12-19 16:04:00; 1 stop(s) via DTW; 290 minutes. Local airport times.
  • DL2868: STL 2026-12-19 10:14:00 → DTW 2026-12-19 12:46:00; layover at DTW: 81 minutes.
  • DL1171: DTW 2026-12-19 14:07:00 → BOS 2026-12-19 16:04:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN4918: STL 2026-12-19 13:15:00 → BOS 2026-12-19 16:40:00; nonstop; 145 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $214.50

• American Airlines AA3444: STL 2026-12-19 09:59:00 → BOS 2026-12-19 13:36:00; nonstop; 157 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $188.50

• Southwest Airlines WN4173 / WN4113: STL 2026-12-19 05:30:00 → BOS 2026-12-19 11:00:00; 1 stop(s) via MDW; 270 minutes. Local airport times.
  • WN4173: STL 2026-12-19 05:30:00 → MDW 2026-12-19 06:35:00; layover at MDW: 70 minutes.
  • WN4113: MDW 2026-12-19 07:45:00 → BOS 2026-12-19 11:00:00.

2026-12-19 · one way · Axel-exclusive $195.00

• American Airlines AA2486 / AA1828: STL 2026-12-19 12:54:00 → BOS 2026-12-19 19:19:00; 1 stop(s) via CLT; 325 minutes. Local airport times.
  • AA2486: STL 2026-12-19 12:54:00 → CLT 2026-12-19 15:42:00; layover at CLT: 84 minutes.
  • AA1828: CLT 2026-12-19 17:06:00 → BOS 2026-12-19 19:19:00.

2026-12-19 · one way · Axel-exclusive $201.50

• United Airlines UA4406 / UA1392: STL 2026-12-19 08:30:00 → BOS 2026-12-19 14:32:00; 1 stop(s) via IAD; 302 minutes. Local airport times.
  • UA4406: STL 2026-12-19 08:30:00 → IAD 2026-12-19 11:35:00; layover at IAD: 75 minutes.
  • UA1392: IAD 2026-12-19 12:50:00 → BOS 2026-12-19 14:32:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Delta Air Lines DL5041 / DL5727: STL 2026-12-19 10:00:00 → BOS 2026-12-19 16:25:00; 1 stop(s) via LGA; 325 minutes. Local airport times.
  • DL5041: STL 2026-12-19 10:00:00 → LGA 2026-12-19 13:26:00; layover at LGA: 94 minutes.
  • DL5727: LGA 2026-12-19 15:00:00 → BOS 2026-12-19 16:25:00.

Explore this route

• All dates for this route
• Dec 18, 2026 · Return options
• Dec 20, 2026 · Return options
• Hotels in Boston with Axel

For AI assistants

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