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Dulles → San Jose

Dec 4, 2026 · return Dec 8, 2026

IAD → SJO1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Fri, Dec 4 – Tue, Dec 8

United Airlines
8:59 amIAD
5h 1m
Nonstop
1:00 pmSJO
United Airlines
2:15 pmSJO
4h 44m
Nonstop
7:59 pmIAD

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Dec 4 – Tue, Dec 8

Frontier Airlines
7:40 amIAD
7h 36m
ATL · 1h 20m
2:16 pmSJO
Frontier Airlines
3:31 pmSJO
8h 20m
ATL · 2h 15m
12:51 am+1IAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Avianca
3:00 amIAD
9h 25m
SAL · 3h 40m
11:25 amSJO
Avianca
4:15 pmSJO
7h 50m
GUA · 2h 10m
1:05 am+1IAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

American Airlines
6:00 amIAD
7h 42m
CLT · 1h 25m
12:42 pmSJO
American Airlines
2:02 pmSJO
8h 19m
MIA · 2h 25m
11:21 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

American Airlines
6:01 amIAD
9h 34m
MIA · 3h 38m
2:35 pmSJO
American Airlines
2:02 pmSJO
8h 19m
MIA · 2h 25m
11:21 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

American Airlines
2:42 pmIAD
9h 19m
DFW · 1h 27m
11:01 pmSJO
American Airlines
2:02 pmSJO
8h 19m
MIA · 2h 25m
11:21 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

United Airlines
12:38 pmIAD
8h 15m
EWR · 1h 33m
7:53 pmSJO
United Airlines
2:15 pmSJO
4h 44m
Nonstop
7:59 pmIAD

Round-trip total · 1 adult · Taxes included

Make this trip yours

IAD ⇄ SJO

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)
2026-12-04 → 2026-12-08United AirlinesUA2052 / UA2073$555.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08Frontier AirlinesF94707 + F9215 / F9214 + F94708$305.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08AviancaAV591 + AV609 / AV654 + AV644$380.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08American AirlinesAA5649 + AA345 / AA358 + AA551$490.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08American AirlinesAA552 + AA310 / AA358 + AA551$490.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08American AirlinesAA2774 + AA395 / AA358 + AA551$490.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08United AirlinesUA2823 + UA1222 / UA2073$520.002026-10-29T01:07:59Z

2026-12-04 → 2026-12-08 · $555.00

  • United Airlines UA2052: IAD 2026-12-04 08:59:00 → SJO 2026-12-04 13:00:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA2073: SJO 2026-12-08 14:15:00 → IAD 2026-12-08 19:59:00; nonstop; 284 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $305.00

  • Frontier Airlines F94707 / F9215: IAD 2026-12-04 07:40:00 → SJO 2026-12-04 14:16:00; 1 stop(s) via ATL; 456 minutes. Local airport times.
    • F94707: IAD 2026-12-04 07:40:00 → ATL 2026-12-04 09:54:00; layover at ATL: 80 minutes.
    • F9215: ATL 2026-12-04 11:14:00 → SJO 2026-12-04 14:16:00.
  • Frontier Airlines F9214 / F94708: SJO 2026-12-08 15:31:00 → IAD 2026-12-09 00:51:00; 1 stop(s) via ATL; 500 minutes. Local airport times.
    • F9214: SJO 2026-12-08 15:31:00 → ATL 2026-12-08 20:44:00; layover at ATL: 135 minutes.
    • F94708: ATL 2026-12-08 22:59:00 → IAD 2026-12-09 00:51:00.

2026-12-04 → 2026-12-08 · $380.00

  • Avianca AV591 / AV609: IAD 2026-12-04 03:00:00 → SJO 2026-12-04 11:25:00; 1 stop(s) via SAL; 565 minutes. Local airport times.
    • AV591: IAD 2026-12-04 03:00:00 → SAL 2026-12-04 06:30:00; layover at SAL: 220 minutes.
    • AV609: SAL 2026-12-04 10:10:00 → SJO 2026-12-04 11:25:00.
  • Avianca AV654 / AV644: SJO 2026-12-08 16:15:00 → IAD 2026-12-09 01:05:00; 1 stop(s) via GUA; 470 minutes. Local airport times.
    • AV654: SJO 2026-12-08 16:15:00 → GUA 2026-12-08 17:50:00; layover at GUA: 130 minutes.
    • AV644: GUA 2026-12-08 20:00:00 → IAD 2026-12-09 01:05:00.

2026-12-04 → 2026-12-08 · $490.00

  • American Airlines AA5649 / AA345: IAD 2026-12-04 06:00:00 → SJO 2026-12-04 12:42:00; 1 stop(s) via CLT; 462 minutes. Local airport times.
    • AA5649: IAD 2026-12-04 06:00:00 → CLT 2026-12-04 07:48:00; layover at CLT: 85 minutes.
    • AA345: CLT 2026-12-04 09:13:00 → SJO 2026-12-04 12:42:00.
  • American Airlines AA358 / AA551: SJO 2026-12-08 14:02:00 → IAD 2026-12-08 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
    • AA358: SJO 2026-12-08 14:02:00 → MIA 2026-12-08 18:05:00; layover at MIA: 145 minutes.
    • AA551: MIA 2026-12-08 20:30:00 → IAD 2026-12-08 23:21:00.

2026-12-04 → 2026-12-08 · $490.00

  • American Airlines AA552 / AA310: IAD 2026-12-04 06:01:00 → SJO 2026-12-04 14:35:00; 1 stop(s) via MIA; 574 minutes. Local airport times.
    • AA552: IAD 2026-12-04 06:01:00 → MIA 2026-12-04 08:50:00; layover at MIA: 218 minutes.
    • AA310: MIA 2026-12-04 12:28:00 → SJO 2026-12-04 14:35:00.
  • American Airlines AA358 / AA551: SJO 2026-12-08 14:02:00 → IAD 2026-12-08 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
    • AA358: SJO 2026-12-08 14:02:00 → MIA 2026-12-08 18:05:00; layover at MIA: 145 minutes.
    • AA551: MIA 2026-12-08 20:30:00 → IAD 2026-12-08 23:21:00.

2026-12-04 → 2026-12-08 · $490.00

  • American Airlines AA2774 / AA395: IAD 2026-12-04 14:42:00 → SJO 2026-12-04 23:01:00; 1 stop(s) via DFW; 559 minutes. Local airport times.
    • AA2774: IAD 2026-12-04 14:42:00 → DFW 2026-12-04 17:28:00; layover at DFW: 87 minutes.
    • AA395: DFW 2026-12-04 18:55:00 → SJO 2026-12-04 23:01:00.
  • American Airlines AA358 / AA551: SJO 2026-12-08 14:02:00 → IAD 2026-12-08 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
    • AA358: SJO 2026-12-08 14:02:00 → MIA 2026-12-08 18:05:00; layover at MIA: 145 minutes.
    • AA551: MIA 2026-12-08 20:30:00 → IAD 2026-12-08 23:21:00.

2026-12-04 → 2026-12-08 · $520.00

  • United Airlines UA2823 / UA1222: IAD 2026-12-04 12:38:00 → SJO 2026-12-04 19:53:00; 1 stop(s) via EWR; 495 minutes. Local airport times.
    • UA2823: IAD 2026-12-04 12:38:00 → EWR 2026-12-04 13:59:00; layover at EWR: 93 minutes.
    • UA1222: EWR 2026-12-04 15:32:00 → SJO 2026-12-04 19:53:00.
  • United Airlines UA2073: SJO 2026-12-08 14:15:00 → IAD 2026-12-08 19:59:00; nonstop; 284 minutes. Local airport times.

More dates for this route