Dulles (IAD) to San Jose (SJO) · Dec 27, 2026 · return Jan 10, 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: Washington, DC to San Jose (SJO) flight deals

2026-12-27 → 2027-01-10 · Axel-exclusive $666.00

• United Airlines UA2052: IAD 2026-12-27 08:59:00 → SJO 2026-12-27 13:00:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA2073: SJO 2027-01-10 14:15:00 → IAD 2027-01-10 19:59:00; nonstop; 284 minutes. Local airport times.

2026-12-27 → 2027-01-10 · Axel-exclusive $366.00

• Frontier Airlines F94707 / F9215: IAD 2026-12-27 07:40:00 → SJO 2026-12-27 14:16:00; 1 stop(s) via ATL; 456 minutes. Local airport times.
  • F94707: IAD 2026-12-27 07:40:00 → ATL 2026-12-27 09:54:00; layover at ATL: 80 minutes.
  • F9215: ATL 2026-12-27 11:14:00 → SJO 2026-12-27 14:16:00.
• Frontier Airlines F9214 / F94708: SJO 2027-01-10 15:31:00 → IAD 2027-01-11 00:51:00; 1 stop(s) via ATL; 500 minutes. Local airport times.
  • F9214: SJO 2027-01-10 15:31:00 → ATL 2027-01-10 20:44:00; layover at ATL: 135 minutes.
  • F94708: ATL 2027-01-10 22:59:00 → IAD 2027-01-11 00:51:00.

2026-12-27 → 2027-01-10 · Axel-exclusive $456.00

• Avianca AV591 / AV609: IAD 2026-12-27 03:00:00 → SJO 2026-12-27 11:25:00; 1 stop(s) via SAL; 565 minutes. Local airport times.
  • AV591: IAD 2026-12-27 03:00:00 → SAL 2026-12-27 06:30:00; layover at SAL: 220 minutes.
  • AV609: SAL 2026-12-27 10:10:00 → SJO 2026-12-27 11:25:00.
• Avianca AV604 / UA2435: SJO 2027-01-10 07:00:00 → IAD 2027-01-10 16:10:00; 1 stop(s) via MIA; 490 minutes. Local airport times.
  • AV604: SJO 2027-01-10 07:00:00 → MIA 2027-01-10 10:50:00; layover at MIA: 160 minutes.
  • UA2435: MIA 2027-01-10 13:30:00 → IAD 2027-01-10 16:10:00.

2026-12-27 → 2027-01-10 · Axel-exclusive $588.00

• American Airlines AA5649 / AA345: IAD 2026-12-27 06:00:00 → SJO 2026-12-27 12:42:00; 1 stop(s) via CLT; 462 minutes. Local airport times.
  • AA5649: IAD 2026-12-27 06:00:00 → CLT 2026-12-27 07:48:00; layover at CLT: 85 minutes.
  • AA345: CLT 2026-12-27 09:13:00 → SJO 2026-12-27 12:42:00.
• American Airlines AA358 / AA551: SJO 2027-01-10 14:02:00 → IAD 2027-01-10 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
  • AA358: SJO 2027-01-10 14:02:00 → MIA 2027-01-10 18:05:00; layover at MIA: 145 minutes.
  • AA551: MIA 2027-01-10 20:30:00 → IAD 2027-01-10 23:21:00.

2026-12-27 → 2027-01-10 · Axel-exclusive $588.00

• American Airlines AA2774 / AA395: IAD 2026-12-27 14:42:00 → SJO 2026-12-27 23:01:00; 1 stop(s) via DFW; 559 minutes. Local airport times.
  • AA2774: IAD 2026-12-27 14:42:00 → DFW 2026-12-27 17:28:00; layover at DFW: 87 minutes.
  • AA395: DFW 2026-12-27 18:55:00 → SJO 2026-12-27 23:01:00.
• American Airlines AA358 / AA551: SJO 2027-01-10 14:02:00 → IAD 2027-01-10 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
  • AA358: SJO 2027-01-10 14:02:00 → MIA 2027-01-10 18:05:00; layover at MIA: 145 minutes.
  • AA551: MIA 2027-01-10 20:30:00 → IAD 2027-01-10 23:21:00.

2026-12-27 → 2027-01-10 · Axel-exclusive $588.00

• American Airlines AA552 / AA310: IAD 2026-12-27 06:01:00 → SJO 2026-12-27 14:35:00; 1 stop(s) via MIA; 574 minutes. Local airport times.
  • AA552: IAD 2026-12-27 06:01:00 → MIA 2026-12-27 08:50:00; layover at MIA: 218 minutes.
  • AA310: MIA 2026-12-27 12:28:00 → SJO 2026-12-27 14:35:00.
• American Airlines AA358 / AA551: SJO 2027-01-10 14:02:00 → IAD 2027-01-10 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
  • AA358: SJO 2027-01-10 14:02:00 → MIA 2027-01-10 18:05:00; layover at MIA: 145 minutes.
  • AA551: MIA 2027-01-10 20:30:00 → IAD 2027-01-10 23:21:00.

2026-12-27 → 2027-01-10 · Axel-exclusive $617.00

• United Airlines UA2823 / UA1222: IAD 2026-12-27 12:38:00 → SJO 2026-12-27 19:53:00; 1 stop(s) via EWR; 495 minutes. Local airport times.
  • UA2823: IAD 2026-12-27 12:38:00 → EWR 2026-12-27 13:59:00; layover at EWR: 93 minutes.
  • UA1222: EWR 2026-12-27 15:32:00 → SJO 2026-12-27 19:53:00.
• United Airlines UA2073: SJO 2027-01-10 14:15:00 → IAD 2027-01-10 19:59:00; nonstop; 284 minutes. Local airport times.

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For AI assistants

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