Flights to Basel, Switzerland/Mulhouse (BSL): deals from 12 cities

Flights for the months ahead

Lowest published fares for the months ahead: $900 round trip, Axel-exclusive, Air France, 1 stop, Nov 13–16, 2026; $650 one way, Axel-exclusive, Air France, 1 stop, Nov 17, 2026; 144 priced flights on 72 exact dates, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

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Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): November 2026

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): December 2026

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): January 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): February 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): March 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): April 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): May 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): June 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): July 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): August 2027

Seattle (SEA) to Basel, Switzerland/Mulhouse (BSL): September 2027

Route overview: Seattle to Basel, Switzerland/Mulhouse (BSL) flight deals

2026-11-13 → 2026-11-16 · Axel-exclusive $900.00

• Air France AF77 / AF1292: SEA 2026-11-13 16:05:00 → BSL 2026-11-14 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2026-11-13 16:05:00 → CDG 2026-11-14 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2026-11-14 12:50:00 → BSL 2026-11-14 13:55:00.
• Air France AF1193 / DL81: BSL 2026-11-16 10:45:00 → SEA 2026-11-16 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2026-11-16 10:45:00 → CDG 2026-11-16 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2026-11-16 13:25:00 → SEA 2026-11-16 15:13:00.

2026-11-13 → 2026-11-16 · Axel-exclusive $925.00

• Delta Air Lines DL142 / KL1945: SEA 2026-11-13 14:35:00 → BSL 2026-11-14 13:25:00; 1 stop(s) via AMS; 830 minutes. Local airport times.
  • DL142: SEA 2026-11-13 14:35:00 → AMS 2026-11-14 09:25:00; layover at AMS: 165 minutes.
  • KL1945: AMS 2026-11-14 12:10:00 → BSL 2026-11-14 13:25:00.
• KLM Royal Dutch Airlines KL1942 / DL143: BSL 2026-11-16 06:00:00 → SEA 2026-11-16 11:50:00; 1 stop(s) via AMS; 890 minutes. Local airport times.
  • KL1942: BSL 2026-11-16 06:00:00 → AMS 2026-11-16 07:30:00; layover at AMS: 165 minutes.
  • DL143: AMS 2026-11-16 10:15:00 → SEA 2026-11-16 11:50:00.

2026-11-17 · one way · Axel-exclusive $650.00

• Air France AF77 / AF1292: SEA 2026-11-17 16:05:00 → BSL 2026-11-18 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2026-11-17 16:05:00 → CDG 2026-11-18 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2026-11-18 12:50:00 → BSL 2026-11-18 13:55:00.

2026-11-17 · one way · Axel-exclusive $675.00

• Delta Air Lines DL142 / KL1945: SEA 2026-11-17 14:35:00 → BSL 2026-11-18 13:25:00; 1 stop(s) via AMS; 830 minutes. Local airport times.
  • DL142: SEA 2026-11-17 14:35:00 → AMS 2026-11-18 09:25:00; layover at AMS: 165 minutes.
  • KL1945: AMS 2026-11-18 12:10:00 → BSL 2026-11-18 13:25:00.

2026-11-24 → 2026-11-29 · Axel-exclusive $990.00

• Air France AF77 / AF1292: SEA 2026-11-24 16:05:00 → BSL 2026-11-25 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2026-11-24 16:05:00 → CDG 2026-11-25 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2026-11-25 12:50:00 → BSL 2026-11-25 13:55:00.
• Air France AF1193 / DL81: BSL 2026-11-29 10:45:00 → SEA 2026-11-29 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2026-11-29 10:45:00 → CDG 2026-11-29 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2026-11-29 13:25:00 → SEA 2026-11-29 15:13:00.

2026-11-24 → 2026-11-29 · Axel-exclusive $1017.50

• Lufthansa LH489 / LH2396: SEA 2026-11-24 14:50:00 → BSL 2026-11-25 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2026-11-24 14:50:00 → MUC 2026-11-25 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2026-11-25 11:25:00 → BSL 2026-11-25 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2026-11-29 06:40:00 → SEA 2026-11-29 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2026-11-29 06:40:00 → FRA 2026-11-29 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2026-11-29 10:20:00 → SEA 2026-11-29 12:00:00.

2026-12-05 → 2026-12-12 · Axel-exclusive $900.00

• Air France AF77 / AF1292: SEA 2026-12-05 16:05:00 → BSL 2026-12-06 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2026-12-05 16:05:00 → CDG 2026-12-06 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2026-12-06 12:50:00 → BSL 2026-12-06 13:55:00.
• Air France AF1193 / DL81: BSL 2026-12-12 10:45:00 → SEA 2026-12-12 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2026-12-12 10:45:00 → CDG 2026-12-12 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2026-12-12 13:25:00 → SEA 2026-12-12 15:13:00.

2026-12-05 → 2026-12-12 · Axel-exclusive $912.50

• Delta Air Lines DL142 / KL1945: SEA 2026-12-05 14:35:00 → BSL 2026-12-06 13:25:00; 1 stop(s) via AMS; 830 minutes. Local airport times.
  • DL142: SEA 2026-12-05 14:35:00 → AMS 2026-12-06 09:25:00; layover at AMS: 165 minutes.
  • KL1945: AMS 2026-12-06 12:10:00 → BSL 2026-12-06 13:25:00.
• British Airways BA755 / BA49: BSL 2026-12-12 11:05:00 → SEA 2026-12-12 16:50:00; 1 stop(s) via LHR; 885 minutes. Local airport times.
  • BA755: BSL 2026-12-12 11:05:00 → LHR 2026-12-12 11:55:00; layover at LHR: 180 minutes.
  • BA49: LHR 2026-12-12 14:55:00 → SEA 2026-12-12 16:50:00.

2026-12-19 → 2026-12-26 · Axel-exclusive $1215.00

• Air France AF77 / AF1292: SEA 2026-12-19 16:05:00 → BSL 2026-12-20 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2026-12-19 16:05:00 → CDG 2026-12-20 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2026-12-20 12:50:00 → BSL 2026-12-20 13:55:00.
• Air France AF1193 / DL81: BSL 2026-12-26 10:45:00 → SEA 2026-12-26 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2026-12-26 10:45:00 → CDG 2026-12-26 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2026-12-26 13:25:00 → SEA 2026-12-26 15:13:00.

2026-12-19 → 2026-12-26 · Axel-exclusive $1248.76

• Lufthansa LH489 / LH2396: SEA 2026-12-19 14:50:00 → BSL 2026-12-20 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2026-12-19 14:50:00 → MUC 2026-12-20 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2026-12-20 11:25:00 → BSL 2026-12-20 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2026-12-26 06:40:00 → SEA 2026-12-26 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2026-12-26 06:40:00 → FRA 2026-12-26 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2026-12-26 10:20:00 → SEA 2026-12-26 12:00:00.

2026-12-31 → 2027-01-03 · Axel-exclusive $1215.00

• Air France AF77 / AF1292: SEA 2026-12-31 16:05:00 → BSL 2027-01-01 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2026-12-31 16:05:00 → CDG 2027-01-01 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-01-01 12:50:00 → BSL 2027-01-01 13:55:00.
• Air France AF1193 / DL81: BSL 2027-01-03 10:45:00 → SEA 2027-01-03 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-01-03 10:45:00 → CDG 2027-01-03 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-01-03 13:25:00 → SEA 2027-01-03 15:13:00.

2026-12-31 → 2027-01-03 · Axel-exclusive $1248.76

• Lufthansa LH489 / LH2396: SEA 2026-12-31 14:50:00 → BSL 2027-01-01 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2026-12-31 14:50:00 → MUC 2027-01-01 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-01-01 11:25:00 → BSL 2027-01-01 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-01-03 06:40:00 → SEA 2027-01-03 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-01-03 06:40:00 → FRA 2027-01-03 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-01-03 10:20:00 → SEA 2027-01-03 12:00:00.

2027-01-14 → 2027-01-17 · Axel-exclusive $900.00

• Air France AF77 / AF1292: SEA 2027-01-14 16:05:00 → BSL 2027-01-15 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2027-01-14 16:05:00 → CDG 2027-01-15 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-01-15 12:50:00 → BSL 2027-01-15 13:55:00.
• Air France AF1193 / DL81: BSL 2027-01-17 10:45:00 → SEA 2027-01-17 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-01-17 10:45:00 → CDG 2027-01-17 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-01-17 13:25:00 → SEA 2027-01-17 15:13:00.

2027-01-14 → 2027-01-17 · Axel-exclusive $925.00

• Lufthansa LH489 / LH2396: SEA 2027-01-14 14:50:00 → BSL 2027-01-15 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2027-01-14 14:50:00 → MUC 2027-01-15 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-01-15 11:25:00 → BSL 2027-01-15 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-01-17 06:40:00 → SEA 2027-01-17 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-01-17 06:40:00 → FRA 2027-01-17 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-01-17 10:20:00 → SEA 2027-01-17 12:00:00.

2027-01-28 → 2027-01-31 · Axel-exclusive $900.00

• Air France AF77 / AF1292: SEA 2027-01-28 16:05:00 → BSL 2027-01-29 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2027-01-28 16:05:00 → CDG 2027-01-29 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-01-29 12:50:00 → BSL 2027-01-29 13:55:00.
• Air France AF1193 / DL81: BSL 2027-01-31 10:45:00 → SEA 2027-01-31 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-01-31 10:45:00 → CDG 2027-01-31 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-01-31 13:25:00 → SEA 2027-01-31 15:13:00.

2027-01-28 → 2027-01-31 · Axel-exclusive $925.00

• Lufthansa LH489 / LH2396: SEA 2027-01-28 14:50:00 → BSL 2027-01-29 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2027-01-28 14:50:00 → MUC 2027-01-29 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-01-29 11:25:00 → BSL 2027-01-29 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-01-31 06:40:00 → SEA 2027-01-31 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-01-31 06:40:00 → FRA 2027-01-31 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-01-31 10:20:00 → SEA 2027-01-31 12:00:00.

2027-03-19 → 2027-03-22 · Axel-exclusive $967.50

• Air France AF77 / AF1292: SEA 2027-03-19 16:05:00 → BSL 2027-03-20 12:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2027-03-19 16:05:00 → CDG 2027-03-20 09:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-03-20 11:50:00 → BSL 2027-03-20 12:55:00.
• Air France AF1193 / DL81: BSL 2027-03-22 10:45:00 → SEA 2027-03-22 16:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-03-22 10:45:00 → CDG 2027-03-22 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-03-22 13:25:00 → SEA 2027-03-22 16:13:00.

2027-03-19 → 2027-03-22 · Axel-exclusive $994.38

• Lufthansa LH489 / LH2396: SEA 2027-03-19 14:50:00 → BSL 2027-03-20 11:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2027-03-19 14:50:00 → MUC 2027-03-20 08:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-03-20 10:25:00 → BSL 2027-03-20 11:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-03-22 06:40:00 → SEA 2027-03-22 13:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-03-22 06:40:00 → FRA 2027-03-22 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-03-22 10:20:00 → SEA 2027-03-22 13:00:00.

2027-05-15 → 2027-05-22 · Axel-exclusive $1225.00

• Air France AF77 / AF1292: SEA 2027-05-15 16:05:00 → BSL 2027-05-16 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2027-05-15 16:05:00 → CDG 2027-05-16 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-05-16 12:50:00 → BSL 2027-05-16 13:55:00.
• Air France AF1193 / DL81: BSL 2027-05-22 10:45:00 → SEA 2027-05-22 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-05-22 10:45:00 → CDG 2027-05-22 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-05-22 13:25:00 → SEA 2027-05-22 15:13:00.

2027-05-15 → 2027-05-22 · Axel-exclusive $1250.00

• Lufthansa LH489 / LH2396: SEA 2027-05-15 14:50:00 → BSL 2027-05-16 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2027-05-15 14:50:00 → MUC 2027-05-16 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-05-16 11:25:00 → BSL 2027-05-16 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-05-22 06:40:00 → SEA 2027-05-22 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-05-22 06:40:00 → FRA 2027-05-22 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-05-22 10:20:00 → SEA 2027-05-22 12:00:00.

2027-07-10 → 2027-07-17 · Axel-exclusive $1225.00

• Air France AF77 / AF1292: SEA 2027-07-10 16:05:00 → BSL 2027-07-11 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2027-07-10 16:05:00 → CDG 2027-07-11 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-07-11 12:50:00 → BSL 2027-07-11 13:55:00.
• Air France AF1193 / DL81: BSL 2027-07-17 10:45:00 → SEA 2027-07-17 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-07-17 10:45:00 → CDG 2027-07-17 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-07-17 13:25:00 → SEA 2027-07-17 15:13:00.

2027-07-10 → 2027-07-17 · Axel-exclusive $1250.00

• Lufthansa LH489 / LH2396: SEA 2027-07-10 14:50:00 → BSL 2027-07-11 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2027-07-10 14:50:00 → MUC 2027-07-11 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-07-11 11:25:00 → BSL 2027-07-11 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-07-17 06:40:00 → SEA 2027-07-17 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-07-17 06:40:00 → FRA 2027-07-17 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-07-17 10:20:00 → SEA 2027-07-17 12:00:00.

2027-09-25 → 2027-10-02 · Axel-exclusive $1225.00

• Air France AF77 / AF1292: SEA 2027-09-25 16:05:00 → BSL 2027-09-26 13:55:00; 1 stop(s) via CDG; 770 minutes. Local airport times.
  • AF77: SEA 2027-09-25 16:05:00 → CDG 2027-09-26 10:50:00; layover at CDG: 120 minutes.
  • AF1292: CDG 2027-09-26 12:50:00 → BSL 2027-09-26 13:55:00.
• Air France AF1193 / DL81: BSL 2027-10-02 10:45:00 → SEA 2027-10-02 15:13:00; 1 stop(s) via CDG; 808 minutes. Local airport times.
  • AF1193: BSL 2027-10-02 10:45:00 → CDG 2027-10-02 12:00:00; layover at CDG: 85 minutes.
  • DL81: CDG 2027-10-02 13:25:00 → SEA 2027-10-02 15:13:00.

2027-09-25 → 2027-10-02 · Axel-exclusive $1250.00

• Lufthansa LH489 / LH2396: SEA 2027-09-25 14:50:00 → BSL 2027-09-26 12:20:00; 1 stop(s) via MUC; 750 minutes. Local airport times.
  • LH489: SEA 2027-09-25 14:50:00 → MUC 2027-09-26 09:55:00; layover at MUC: 90 minutes.
  • LH2396: MUC 2027-09-26 11:25:00 → BSL 2027-09-26 12:20:00.
• Lufthansa LH1209 / LH490: BSL 2027-10-02 06:40:00 → SEA 2027-10-02 12:00:00; 1 stop(s) via FRA; 860 minutes. Local airport times.
  • LH1209: BSL 2027-10-02 06:40:00 → FRA 2027-10-02 07:45:00; layover at FRA: 155 minutes.
  • LH490: FRA 2027-10-02 10:20:00 → SEA 2027-10-02 12:00:00.

More dates for this route

• Nov 13, 2026 · Return options
• Nov 24, 2026 · Return options
• Dec 3, 2026 · Return options
• Dec 15, 2026 · Return options
• Dec 24, 2026 · Return options
• Jan 2, 2027 · Return options
• Jan 14, 2027 · Return options
• Jan 26, 2027 · Return options
• Feb 19, 2027 · Return options
• May 14, 2027 · Return options
• Jul 9, 2027 · Return options
• Sep 25, 2027 · Return options

Source: https://helloaxel.com/en/flights/to-basel-switzerland-mulhouse-bsl

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Flights to Basel, Switzerland/Mulhouse (BSL) by departure city

• Seattle to Basel, Switzerland/Mulhouse (BSL)
• New York to Basel, Switzerland/Mulhouse (BSL)
• San Francisco Bay Area to Basel, Switzerland/Mulhouse (BSL)
• Los Angeles to Basel, Switzerland/Mulhouse (BSL)
• Miami or Fort Lauderdale to Basel, Switzerland/Mulhouse (BSL)
• Chicago to Basel, Switzerland/Mulhouse (BSL)
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• Minneapolis to Basel, Switzerland/Mulhouse (BSL)
• Houston to Basel, Switzerland/Mulhouse (BSL)
• Washington, DC to Basel, Switzerland/Mulhouse (BSL)
• Dallas-Fort Worth to Basel, Switzerland/Mulhouse (BSL)
• London to Basel, Switzerland/Mulhouse (BSL)

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Fares observed November 2 – 4, 2026. USD for the travelers shown.

November 2026

3 adults · Economy · Round-trip totals

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December 2026

1 adult · Economy · Round-trip totals

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July 2027

1 adult · Economy · Round-trip totals

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1 adult · Economy · One-way totals

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• This page: Flights to Basel, Switzerland/Mulhouse (BSL): deals from 12 cities. Flights to Basel, Switzerland/Mulhouse (BSL) from Seattle, New York, San Francisco Bay Area, Los Angeles, Miami or Fort Lauderdale, Chicago, Denver, Minneapolis, Houston, Washington, DC, Dallas-Fort Worth, London. Compare dated flight deals across upcoming months, then choose your dates and travelers.
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