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Route overview: Washington, DC to San Jose (SJO) flight deals

Dulles → San Jose

Dec 3, 2026 · return Dec 10, 2026

IAD → SJO1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Thu, Dec 3 – Thu, Dec 10

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

Thu, Dec 3 – Thu, Dec 10

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

Thu, Dec 3 – Thu, Dec 10

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

Thu, Dec 3 – Thu, Dec 10

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

Thu, Dec 3 – Thu, Dec 10

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

Thu, Dec 3 – Thu, Dec 10

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

Thu, Dec 3 – Thu, Dec 10

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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Explore this route

All dates for this routeDec 2, 2026 → Dec 9, 2026Dec 4, 2026 → Dec 11, 2026
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Washington, DC to San Jose (SJO) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-03 → 2026-12-10United AirlinesUA2052 / UA2073$555.002026-10-29T01:07:59Z
2026-12-03 → 2026-12-10Frontier AirlinesF94707 + F9215 / F9214 + F94708$305.002026-10-29T01:07:59Z
2026-12-03 → 2026-12-10AviancaAV591 + AV609 / AV654 + AV644$380.002026-10-29T01:07:59Z
2026-12-03 → 2026-12-10American AirlinesAA552 + AA310 / AA358 + AA551$490.002026-10-29T01:07:59Z
2026-12-03 → 2026-12-10American AirlinesAA2774 + AA395 / AA358 + AA551$490.002026-10-29T01:07:59Z
2026-12-03 → 2026-12-10American AirlinesAA5649 + AA345 / AA358 + AA551$490.002026-10-29T01:07:59Z
2026-12-03 → 2026-12-10United AirlinesUA2823 + UA1222 / UA2073$520.002026-10-29T01:07:59Z

2026-12-03 → 2026-12-10 · $555.00

  • United Airlines UA2052: IAD 2026-12-03 08:59:00 → SJO 2026-12-03 13:00:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA2073: SJO 2026-12-10 14:15:00 → IAD 2026-12-10 19:59:00; nonstop; 284 minutes. Local airport times.

2026-12-03 → 2026-12-10 · $305.00

  • Frontier Airlines F94707 / F9215: IAD 2026-12-03 07:40:00 → SJO 2026-12-03 14:16:00; 1 stop(s) via ATL; 456 minutes. Local airport times.
    • F94707: IAD 2026-12-03 07:40:00 → ATL 2026-12-03 09:54:00; layover at ATL: 80 minutes.
    • F9215: ATL 2026-12-03 11:14:00 → SJO 2026-12-03 14:16:00.
  • Frontier Airlines F9214 / F94708: SJO 2026-12-10 15:31:00 → IAD 2026-12-11 00:51:00; 1 stop(s) via ATL; 500 minutes. Local airport times.
    • F9214: SJO 2026-12-10 15:31:00 → ATL 2026-12-10 20:44:00; layover at ATL: 135 minutes.
    • F94708: ATL 2026-12-10 22:59:00 → IAD 2026-12-11 00:51:00.

2026-12-03 → 2026-12-10 · $380.00

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

2026-12-03 → 2026-12-10 · $490.00

  • American Airlines AA552 / AA310: IAD 2026-12-03 06:01:00 → SJO 2026-12-03 14:35:00; 1 stop(s) via MIA; 574 minutes. Local airport times.
    • AA552: IAD 2026-12-03 06:01:00 → MIA 2026-12-03 08:50:00; layover at MIA: 218 minutes.
    • AA310: MIA 2026-12-03 12:28:00 → SJO 2026-12-03 14:35:00.
  • American Airlines AA358 / AA551: SJO 2026-12-10 14:02:00 → IAD 2026-12-10 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
    • AA358: SJO 2026-12-10 14:02:00 → MIA 2026-12-10 18:05:00; layover at MIA: 145 minutes.
    • AA551: MIA 2026-12-10 20:30:00 → IAD 2026-12-10 23:21:00.

2026-12-03 → 2026-12-10 · $490.00

  • American Airlines AA2774 / AA395: IAD 2026-12-03 14:42:00 → SJO 2026-12-03 23:01:00; 1 stop(s) via DFW; 559 minutes. Local airport times.
    • AA2774: IAD 2026-12-03 14:42:00 → DFW 2026-12-03 17:28:00; layover at DFW: 87 minutes.
    • AA395: DFW 2026-12-03 18:55:00 → SJO 2026-12-03 23:01:00.
  • American Airlines AA358 / AA551: SJO 2026-12-10 14:02:00 → IAD 2026-12-10 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
    • AA358: SJO 2026-12-10 14:02:00 → MIA 2026-12-10 18:05:00; layover at MIA: 145 minutes.
    • AA551: MIA 2026-12-10 20:30:00 → IAD 2026-12-10 23:21:00.

2026-12-03 → 2026-12-10 · $490.00

  • American Airlines AA5649 / AA345: IAD 2026-12-03 06:00:00 → SJO 2026-12-03 12:42:00; 1 stop(s) via CLT; 462 minutes. Local airport times.
    • AA5649: IAD 2026-12-03 06:00:00 → CLT 2026-12-03 07:48:00; layover at CLT: 85 minutes.
    • AA345: CLT 2026-12-03 09:13:00 → SJO 2026-12-03 12:42:00.
  • American Airlines AA358 / AA551: SJO 2026-12-10 14:02:00 → IAD 2026-12-10 23:21:00; 1 stop(s) via MIA; 499 minutes. Local airport times.
    • AA358: SJO 2026-12-10 14:02:00 → MIA 2026-12-10 18:05:00; layover at MIA: 145 minutes.
    • AA551: MIA 2026-12-10 20:30:00 → IAD 2026-12-10 23:21:00.

2026-12-03 → 2026-12-10 · $520.00

  • United Airlines UA2823 / UA1222: IAD 2026-12-03 12:38:00 → SJO 2026-12-03 19:53:00; 1 stop(s) via EWR; 495 minutes. Local airport times.
    • UA2823: IAD 2026-12-03 12:38:00 → EWR 2026-12-03 13:59:00; layover at EWR: 93 minutes.
    • UA1222: EWR 2026-12-03 15:32:00 → SJO 2026-12-03 19:53:00.
  • United Airlines UA2073: SJO 2026-12-10 14:15:00 → IAD 2026-12-10 19:59:00; nonstop; 284 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Dulles (IAD) to San Jose (SJO) · Dec 3, 2026 · return Dec 10, 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 Washington, DC to San Jose (SJO) 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.