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Boston → Saint Louis

Dec 13, 2026 · return Dec 20, 2026

BOS → STL1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Sun, Dec 13 – Sun, Dec 20

Southwest Airlines
12:25 pmBOS
3h 5m
Nonstop
2:30 pmSTL
Southwest Airlines
8:50 pmSTL
2h 25m
Nonstop
12:15 am+1BOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

American Airlines
10:19 amBOS
3h 23m
Nonstop
12:42 pmSTL
American Airlines
9:59 amSTL
2h 37m
Nonstop
1:36 pmBOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

Southwest Airlines
5:10 amBOS
3h 5m
Nonstop
7:15 amSTL
Southwest Airlines
8:50 pmSTL
2h 25m
Nonstop
12:15 am+1BOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

American Airlines
3:25 pmBOS
3h 22m
Nonstop
5:47 pmSTL
American Airlines
9:59 amSTL
2h 37m
Nonstop
1:36 pmBOS

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Sun, Dec 20

Frontier Airlines
12:15 pmBOS
6h 27m
ATL · 1h 13m
5:42 pmSTL
Southwest Airlines
8:50 pmSTL
2h 25m
Nonstop
12:15 am+1BOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

United Airlines
5:45 amBOS
5h 27m
IAD · 1h 15m
10:12 amSTL
United Airlines
6:00 amSTL
5h 27m
EWR · 1h 55m
12:27 pmBOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

Delta Air Lines
1:04 pmBOS
5h 16m
DTW · 1h 14m
5:20 pmSTL
Delta Air Lines
10:14 amSTL
4h 50m
DTW · 1h 21m
4:04 pmBOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

Southwest Airlines
1:20 pmBOS
5h 45m
BWI · 1h 50m
6:05 pmSTL
Southwest Airlines
8:50 pmSTL
2h 25m
Nonstop
12:15 am+1BOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

American Airlines
4:00 pmBOS
5h 31m
PHL · 1h
8:31 pmSTL
American Airlines
9:59 amSTL
2h 37m
Nonstop
1:36 pmBOS

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sun, Dec 20

American Airlines
5:00 amBOS
6h 19m
CLT · 1h 41m
10:19 amSTL
American Airlines
9:59 amSTL
2h 37m
Nonstop
1:36 pmBOS

Round-trip total · 1 adult · Taxes included

Make this trip yours

BOS ⇄ STL

Economy

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

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More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

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

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 → 2026-12-20Southwest AirlinesWN958 / WN4431$329.002026-10-29T00:52:52Z
2026-12-13 → 2026-12-20American AirlinesAA4341 / AA3444$340.752026-10-29T00:52:52Z
2026-12-13 → 2026-12-20Frontier Airlines / Southwest AirlinesF93511 + F94473 / WN4431$279.002026-10-29T00:52:52Z
2026-12-13 → 2026-12-20United AirlinesUA1734 + UA4427 / UA1344 + UA1669$317.252026-10-29T00:52:52Z
2026-12-13 → 2026-12-20Delta Air LinesDL2222 + DL2822 / DL2868 + DL1171$329.002026-10-29T00:52:52Z
2026-12-13 → 2026-12-20Southwest AirlinesWN819 / WN4431$329.002026-10-29T00:52:52Z
2026-12-13 → 2026-12-20American AirlinesAA4678 / AA3444$340.752026-10-29T00:52:52Z
2026-12-13 → 2026-12-20Southwest AirlinesWN1888 + WN2730 / WN4431$319.002026-10-29T00:52:52Z
2026-12-13 → 2026-12-20American AirlinesAA1198 + AA5224 / AA3444$325.752026-10-29T00:52:52Z
2026-12-13 → 2026-12-20American AirlinesAA1249 + AA2486 / AA3444$325.752026-10-29T00:52:52Z

2026-12-13 → 2026-12-20 · $329.00

  • Southwest Airlines WN958: BOS 2026-12-13 12:25:00 → STL 2026-12-13 14:30:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN4431: STL 2026-12-20 20:50:00 → BOS 2026-12-21 00:15:00; nonstop; 145 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $340.75

  • American Airlines AA4341: BOS 2026-12-13 10:19:00 → STL 2026-12-13 12:42:00; nonstop; 203 minutes. Local airport times.
  • American Airlines AA3444: STL 2026-12-20 09:59:00 → BOS 2026-12-20 13:36:00; nonstop; 157 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $279.00

  • Frontier Airlines F93511 / F94473: BOS 2026-12-13 12:15:00 → STL 2026-12-13 17:42:00; 1 stop(s) via ATL; 387 minutes. Local airport times.
    • F93511: BOS 2026-12-13 12:15:00 → ATL 2026-12-13 15:36:00; layover at ATL: 73 minutes.
    • F94473: ATL 2026-12-13 16:49:00 → STL 2026-12-13 17:42:00.
  • Southwest Airlines WN4431: STL 2026-12-20 20:50:00 → BOS 2026-12-21 00:15:00; nonstop; 145 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $317.25

  • United Airlines UA1734 / UA4427: BOS 2026-12-13 05:45:00 → STL 2026-12-13 10:12:00; 1 stop(s) via IAD; 327 minutes. Local airport times.
    • UA1734: BOS 2026-12-13 05:45:00 → IAD 2026-12-13 07:25:00; layover at IAD: 75 minutes.
    • UA4427: IAD 2026-12-13 08:40:00 → STL 2026-12-13 10:12:00.
  • United Airlines UA1344 / UA1669: STL 2026-12-20 06:00:00 → BOS 2026-12-20 12:27:00; 1 stop(s) via EWR; 327 minutes. Local airport times.
    • UA1344: STL 2026-12-20 06:00:00 → EWR 2026-12-20 09:21:00; layover at EWR: 115 minutes.
    • UA1669: EWR 2026-12-20 11:16:00 → BOS 2026-12-20 12:27:00.

2026-12-13 → 2026-12-20 · $329.00

  • Delta Air Lines DL2222 / DL2822: BOS 2026-12-13 13:04:00 → STL 2026-12-13 17:20:00; 1 stop(s) via DTW; 316 minutes. Local airport times.
    • DL2222: BOS 2026-12-13 13:04:00 → DTW 2026-12-13 15:19:00; layover at DTW: 74 minutes.
    • DL2822: DTW 2026-12-13 16:33:00 → STL 2026-12-13 17:20:00.
  • Delta Air Lines DL2868 / DL1171: STL 2026-12-20 10:14:00 → BOS 2026-12-20 16:04:00; 1 stop(s) via DTW; 290 minutes. Local airport times.
    • DL2868: STL 2026-12-20 10:14:00 → DTW 2026-12-20 12:46:00; layover at DTW: 81 minutes.
    • DL1171: DTW 2026-12-20 14:07:00 → BOS 2026-12-20 16:04:00.

2026-12-13 → 2026-12-20 · $329.00

  • Southwest Airlines WN819: BOS 2026-12-13 05:10:00 → STL 2026-12-13 07:15:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN4431: STL 2026-12-20 20:50:00 → BOS 2026-12-21 00:15:00; nonstop; 145 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $340.75

  • American Airlines AA4678: BOS 2026-12-13 15:25:00 → STL 2026-12-13 17:47:00; nonstop; 202 minutes. Local airport times.
  • American Airlines AA3444: STL 2026-12-20 09:59:00 → BOS 2026-12-20 13:36:00; nonstop; 157 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $319.00

  • Southwest Airlines WN1888 / WN2730: BOS 2026-12-13 13:20:00 → STL 2026-12-13 18:05:00; 1 stop(s) via BWI; 345 minutes. Local airport times.
    • WN1888: BOS 2026-12-13 13:20:00 → BWI 2026-12-13 14:55:00; layover at BWI: 110 minutes.
    • WN2730: BWI 2026-12-13 16:45:00 → STL 2026-12-13 18:05:00.
  • Southwest Airlines WN4431: STL 2026-12-20 20:50:00 → BOS 2026-12-21 00:15:00; nonstop; 145 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $325.75

  • American Airlines AA1198 / AA5224: BOS 2026-12-13 16:00:00 → STL 2026-12-13 20:31:00; 1 stop(s) via PHL; 331 minutes. Local airport times.
    • AA1198: BOS 2026-12-13 16:00:00 → PHL 2026-12-13 17:40:00; layover at PHL: 60 minutes.
    • AA5224: PHL 2026-12-13 18:40:00 → STL 2026-12-13 20:31:00.
  • American Airlines AA3444: STL 2026-12-20 09:59:00 → BOS 2026-12-20 13:36:00; nonstop; 157 minutes. Local airport times.

2026-12-13 → 2026-12-20 · $325.75

  • American Airlines AA1249 / AA2486: BOS 2026-12-13 05:00:00 → STL 2026-12-13 10:19:00; 1 stop(s) via CLT; 379 minutes. Local airport times.
    • AA1249: BOS 2026-12-13 05:00:00 → CLT 2026-12-13 07:34:00; layover at CLT: 101 minutes.
    • AA2486: CLT 2026-12-13 09:15:00 → STL 2026-12-13 10:19:00.
  • American Airlines AA3444: STL 2026-12-20 09:59:00 → BOS 2026-12-20 13:36:00; nonstop; 157 minutes. Local airport times.

More dates for this route