Dulles (IAD) to Guanacaste (LIR), Dec 2–13, 2026: from $565 round trip

Dulles (IAD) to Guanacaste (LIR), Dec 2–13, 2026: from $565 round trip on Axel, checked Nov 11, 2026. Lowest published fare: $565 round trip, Axel-exclusive, American Airlines / United Airlines, 1 stop, Dec 2–13, 2026, 1 adult, economy, checked Nov 11, 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: Washington, DC to Guanacaste (LIR) flight deals

2026-12-02 → 2026-12-13 · Axel-exclusive $565.00

• American Airlines AA552 / AA1383: IAD 2026-12-02 06:01:00 → LIR 2026-12-02 14:19:00; 1 stop(s) via MIA; 558 minutes. Local airport times.
  • AA552: IAD 2026-12-02 06:01:00 → MIA 2026-12-02 08:50:00; layover at MIA: 205 minutes.
  • AA1383: MIA 2026-12-02 12:15:00 → LIR 2026-12-02 14:19:00.
• United Airlines UA2349 / UA1453: LIR 2026-12-13 09:25:00 → IAD 2026-12-14 00:59:00; 1 stop(s) via SFO; 874 minutes. Local airport times.
  • UA2349: LIR 2026-12-13 09:25:00 → SFO 2026-12-13 14:19:00; layover at SFO: 152 minutes.
  • UA1453: SFO 2026-12-13 16:51:00 → IAD 2026-12-14 00:59:00.

2026-12-02 → 2026-12-13 · Axel-exclusive $570.00

• United Airlines UA565 / UA1120: IAD 2026-12-02 06:10:00 → LIR 2026-12-02 15:20:00; 1 stop(s) via ORD; 610 minutes. Local airport times.
  • UA565: IAD 2026-12-02 06:10:00 → ORD 2026-12-02 07:32:00; layover at ORD: 151 minutes.
  • UA1120: ORD 2026-12-02 10:03:00 → LIR 2026-12-02 15:20:00.
• United Airlines UA2349 / UA1453: LIR 2026-12-13 09:25:00 → IAD 2026-12-14 00:59:00; 1 stop(s) via SFO; 874 minutes. Local airport times.
  • UA2349: LIR 2026-12-13 09:25:00 → SFO 2026-12-13 14:19:00; layover at SFO: 152 minutes.
  • UA1453: SFO 2026-12-13 16:51:00 → IAD 2026-12-14 00:59:00.

2026-12-02 → 2026-12-13 · Axel-exclusive $590.00

• Delta Air Lines DL2327 / DL1898: IAD 2026-12-02 06:00:00 → LIR 2026-12-02 12:45:00; 1 stop(s) via ATL; 465 minutes. Local airport times.
  • DL2327: IAD 2026-12-02 06:00:00 → ATL 2026-12-02 07:58:00; layover at ATL: 102 minutes.
  • DL1898: ATL 2026-12-02 09:40:00 → LIR 2026-12-02 12:45:00.
• Delta Air Lines DL1820 / DL2549: LIR 2026-12-13 14:00:00 → IAD 2026-12-14 00:36:00; 1 stop(s) via ATL; 576 minutes. Local airport times.
  • DL1820: LIR 2026-12-13 14:00:00 → ATL 2026-12-13 19:02:00; layover at ATL: 233 minutes.
  • DL2549: ATL 2026-12-13 22:55:00 → IAD 2026-12-14 00:36:00.

2026-12-02 → 2026-12-13 · Axel-exclusive $565.00

• American Airlines AA5649 / AA887: IAD 2026-12-02 06:00:00 → LIR 2026-12-02 12:30:00; 1 stop(s) via CLT; 450 minutes. Local airport times.
  • AA5649: IAD 2026-12-02 06:00:00 → CLT 2026-12-02 07:48:00; layover at CLT: 82 minutes.
  • AA887: CLT 2026-12-02 09:10:00 → LIR 2026-12-02 12:30:00.
• United Airlines UA2349 / UA1453: LIR 2026-12-13 09:25:00 → IAD 2026-12-14 00:59:00; 1 stop(s) via SFO; 874 minutes. Local airport times.
  • UA2349: LIR 2026-12-13 09:25:00 → SFO 2026-12-13 14:19:00; layover at SFO: 152 minutes.
  • UA1453: SFO 2026-12-13 16:51:00 → IAD 2026-12-14 00:59:00.

2026-12-02 → 2026-12-13 · Axel-exclusive $570.00

• United Airlines UA1524 / UA1737: IAD 2026-12-02 08:30:00 → LIR 2026-12-02 18:37:00; 1 stop(s) via IAH; 667 minutes. Local airport times.
  • UA1524: IAD 2026-12-02 08:30:00 → IAH 2026-12-02 11:06:00; layover at IAH: 239 minutes.
  • UA1737: IAH 2026-12-02 15:05:00 → LIR 2026-12-02 18:37:00.
• United Airlines UA2349 / UA1453: LIR 2026-12-13 09:25:00 → IAD 2026-12-14 00:59:00; 1 stop(s) via SFO; 874 minutes. Local airport times.
  • UA2349: LIR 2026-12-13 09:25:00 → SFO 2026-12-13 14:19:00; layover at SFO: 152 minutes.
  • UA1453: SFO 2026-12-13 16:51:00 → IAD 2026-12-14 00:59:00.

2026-12-02 → 2026-12-13 · Axel-exclusive $615.00

• United Airlines UA1547: IAD 2026-12-02 08:51:00 → LIR 2026-12-02 12:50:00; nonstop; 299 minutes. Local airport times.
• United Airlines UA2349 / UA1453: LIR 2026-12-13 09:25:00 → IAD 2026-12-14 00:59:00; 1 stop(s) via SFO; 874 minutes. Local airport times.
  • UA2349: LIR 2026-12-13 09:25:00 → SFO 2026-12-13 14:19:00; layover at SFO: 152 minutes.
  • UA1453: SFO 2026-12-13 16:51:00 → IAD 2026-12-14 00:59:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Dec 1, 2026 · Return options
• Dec 3, 2026 · Return options
• Hotels in Sardinal, Guanacaste Province with Axel

For AI assistants

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