Seattle (SEA) to Baltimore (BWI) · Dec 18, 2026 · return Dec 21, 2026

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: Seattle to Baltimore (BWI) flight deals

2026-12-18 → 2026-12-21 · Axel-exclusive $432.00

• Alaska Airlines AS781: SEA 2026-12-18 21:40:00 → BWI 2026-12-19 05:37:00; nonstop; 297 minutes. Local airport times.
• Alaska Airlines AS786: BWI 2026-12-21 07:00:00 → SEA 2026-12-21 10:11:00; nonstop; 371 minutes. Local airport times.

2026-12-18 → 2026-12-21 · Axel-exclusive $384.00

• Southwest Airlines WN3823 / WN1588: SEA 2026-12-18 13:35:00 → BWI 2026-12-19 00:50:00; 1 stop(s) via DEN; 495 minutes. Local airport times.
  • WN3823: SEA 2026-12-18 13:35:00 → DEN 2026-12-18 17:05:00; layover at DEN: 140 minutes.
  • WN1588: DEN 2026-12-18 19:25:00 → BWI 2026-12-19 00:50:00.
• Southwest Airlines WN323 / WN1597: BWI 2026-12-21 07:55:00 → SEA 2026-12-21 13:15:00; 1 stop(s) via MDW; 500 minutes. Local airport times.
  • WN323: BWI 2026-12-21 07:55:00 → MDW 2026-12-21 09:00:00; layover at MDW: 95 minutes.
  • WN1597: MDW 2026-12-21 10:35:00 → SEA 2026-12-21 13:15:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $403.00

• American Airlines AA3075 / AA584: SEA 2026-12-18 23:59:00 → BWI 2026-12-19 11:01:00; 1 stop(s) via DFW; 482 minutes. Local airport times.
  • AA3075: SEA 2026-12-18 23:59:00 → DFW 2026-12-19 05:52:00; layover at DFW: 68 minutes.
  • AA584: DFW 2026-12-19 07:00:00 → BWI 2026-12-19 11:01:00.
• United Airlines UA590 / UA2211: BWI 2026-12-21 17:31:00 → SEA 2026-12-21 22:43:00; 1 stop(s) via ORD; 492 minutes. Local airport times.
  • UA590: BWI 2026-12-21 17:31:00 → ORD 2026-12-21 18:52:00; layover at ORD: 63 minutes.
  • UA2211: ORD 2026-12-21 19:55:00 → SEA 2026-12-21 22:43:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $408.00

• United Airlines UA2601 / UA1362: SEA 2026-12-18 05:00:00 → BWI 2026-12-18 15:16:00; 1 stop(s) via DEN; 436 minutes. Local airport times.
  • UA2601: SEA 2026-12-18 05:00:00 → DEN 2026-12-18 08:41:00; layover at DEN: 69 minutes.
  • UA1362: DEN 2026-12-18 09:50:00 → BWI 2026-12-18 15:16:00.
• United Airlines UA590 / UA2211: BWI 2026-12-21 17:31:00 → SEA 2026-12-21 22:43:00; 1 stop(s) via ORD; 492 minutes. Local airport times.
  • UA590: BWI 2026-12-21 17:31:00 → ORD 2026-12-21 18:52:00; layover at ORD: 63 minutes.
  • UA2211: ORD 2026-12-21 19:55:00 → SEA 2026-12-21 22:43:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $420.00

• Delta Air Lines DL567 / DL1592: SEA 2026-12-18 22:40:00 → BWI 2026-12-19 09:18:00; 1 stop(s) via ATL; 458 minutes. Local airport times.
  • DL567: SEA 2026-12-18 22:40:00 → ATL 2026-12-19 06:12:00; layover at ATL: 78 minutes.
  • DL1592: ATL 2026-12-19 07:30:00 → BWI 2026-12-19 09:18:00.
• Delta Air Lines DL2601 / DL734: BWI 2026-12-21 06:00:00 → SEA 2026-12-21 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
  • DL2601: BWI 2026-12-21 06:00:00 → DTW 2026-12-21 07:47:00; layover at DTW: 68 minutes.
  • DL734: DTW 2026-12-21 08:55:00 → SEA 2026-12-21 11:09:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $403.00

• American Airlines AA580 / AA2799: SEA 2026-12-18 12:38:00 → BWI 2026-12-18 23:57:00; 1 stop(s) via CLT; 499 minutes. Local airport times.
  • AA580: SEA 2026-12-18 12:38:00 → CLT 2026-12-18 20:43:00; layover at CLT: 112 minutes.
  • AA2799: CLT 2026-12-18 22:35:00 → BWI 2026-12-18 23:57:00.
• United Airlines UA590 / UA2211: BWI 2026-12-21 17:31:00 → SEA 2026-12-21 22:43:00; 1 stop(s) via ORD; 492 minutes. Local airport times.
  • UA590: BWI 2026-12-21 17:31:00 → ORD 2026-12-21 18:52:00; layover at ORD: 63 minutes.
  • UA2211: ORD 2026-12-21 19:55:00 → SEA 2026-12-21 22:43:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $420.00

• Delta Air Lines DL953 / DL2357: SEA 2026-12-18 23:37:00 → BWI 2026-12-19 10:42:00; 1 stop(s) via MSP; 485 minutes. Local airport times.
  • DL953: SEA 2026-12-18 23:37:00 → MSP 2026-12-19 04:55:00; layover at MSP: 130 minutes.
  • DL2357: MSP 2026-12-19 07:05:00 → BWI 2026-12-19 10:42:00.
• Delta Air Lines DL2601 / DL734: BWI 2026-12-21 06:00:00 → SEA 2026-12-21 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
  • DL2601: BWI 2026-12-21 06:00:00 → DTW 2026-12-21 07:47:00; layover at DTW: 68 minutes.
  • DL734: DTW 2026-12-21 08:55:00 → SEA 2026-12-21 11:09:00.

Explore this route

• All dates for this route
• Dec 17, 2026 · Return options
• Dec 19, 2026 · Return options
• Hotels in Baltimore with Axel

For AI assistants

• This page: Seattle (SEA) to Baltimore (BWI) · Dec 18, 2026 · return Dec 21, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
• Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
• Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
• If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Seattle to Baltimore (BWI) flight deals · Flight search guide.
• Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.

Feedback (optional): Missing info · Axel issue