Dulles (IAD) to Guanacaste (LIR), Sep 17–20, 2027: from $468 round trip

Lowest published fare: $468 round trip, Axel-exclusive, United Airlines, 1 stop, Sep 17–20, 2027, 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.

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

2027-09-17 → 2027-09-20 · Axel-exclusive $468.00

• United Airlines UA565 / UA1120: IAD 2027-09-17 06:10:00 → LIR 2027-09-17 14:20:00; 1 stop(s) via ORD; 610 minutes. Local airport times.
  • UA565: IAD 2027-09-17 06:10:00 → ORD 2027-09-17 07:32:00; layover at ORD: 151 minutes.
  • UA1120: ORD 2027-09-17 10:03:00 → LIR 2027-09-17 14:20:00.
• United Airlines UA1516 / UA750: LIR 2027-09-20 14:20:00 → IAD 2027-09-21 01:37:00; 1 stop(s) via IAH; 557 minutes. Local airport times.
  • UA1516: LIR 2027-09-20 14:20:00 → IAH 2027-09-20 19:04:00; layover at IAH: 154 minutes.
  • UA750: IAH 2027-09-20 21:38:00 → IAD 2027-09-21 01:37:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $472.50

• American Airlines AA552 / AA1383: IAD 2027-09-17 06:01:00 → LIR 2027-09-17 13:19:00; 1 stop(s) via MIA; 558 minutes. Local airport times.
  • AA552: IAD 2027-09-17 06:01:00 → MIA 2027-09-17 08:50:00; layover at MIA: 205 minutes.
  • AA1383: MIA 2027-09-17 12:15:00 → LIR 2027-09-17 13:19:00.
• Delta Air Lines DL1820 / DL2549: LIR 2027-09-20 14:00:00 → IAD 2027-09-21 01:36:00; 1 stop(s) via ATL; 576 minutes. Local airport times.
  • DL1820: LIR 2027-09-20 14:00:00 → ATL 2027-09-20 20:02:00; layover at ATL: 233 minutes.
  • DL2549: ATL 2027-09-20 23:55:00 → IAD 2027-09-21 01:36:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $486.00

• Delta Air Lines DL2327 / DL1898: IAD 2027-09-17 06:00:00 → LIR 2027-09-17 11:45:00; 1 stop(s) via ATL; 465 minutes. Local airport times.
  • DL2327: IAD 2027-09-17 06:00:00 → ATL 2027-09-17 07:58:00; layover at ATL: 102 minutes.
  • DL1898: ATL 2027-09-17 09:40:00 → LIR 2027-09-17 11:45:00.
• Delta Air Lines DL1820 / DL2549: LIR 2027-09-20 14:00:00 → IAD 2027-09-21 01:36:00; 1 stop(s) via ATL; 576 minutes. Local airport times.
  • DL1820: LIR 2027-09-20 14:00:00 → ATL 2027-09-20 20:02:00; layover at ATL: 233 minutes.
  • DL2549: ATL 2027-09-20 23:55:00 → IAD 2027-09-21 01:36:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $468.00

• United Airlines UA1524 / UA1737: IAD 2027-09-17 08:30:00 → LIR 2027-09-17 17:37:00; 1 stop(s) via IAH; 667 minutes. Local airport times.
  • UA1524: IAD 2027-09-17 08:30:00 → IAH 2027-09-17 11:06:00; layover at IAH: 239 minutes.
  • UA1737: IAH 2027-09-17 15:05:00 → LIR 2027-09-17 17:37:00.
• United Airlines UA1516 / UA750: LIR 2027-09-20 14:20:00 → IAD 2027-09-21 01:37:00; 1 stop(s) via IAH; 557 minutes. Local airport times.
  • UA1516: LIR 2027-09-20 14:20:00 → IAH 2027-09-20 19:04:00; layover at IAH: 154 minutes.
  • UA750: IAH 2027-09-20 21:38:00 → IAD 2027-09-21 01:37:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $472.50

• American Airlines AA5649 / AA887: IAD 2027-09-17 06:00:00 → LIR 2027-09-17 11:30:00; 1 stop(s) via CLT; 450 minutes. Local airport times.
  • AA5649: IAD 2027-09-17 06:00:00 → CLT 2027-09-17 07:48:00; layover at CLT: 82 minutes.
  • AA887: CLT 2027-09-17 09:10:00 → LIR 2027-09-17 11:30:00.
• Delta Air Lines DL1820 / DL2549: LIR 2027-09-20 14:00:00 → IAD 2027-09-21 01:36:00; 1 stop(s) via ATL; 576 minutes. Local airport times.
  • DL1820: LIR 2027-09-20 14:00:00 → ATL 2027-09-20 20:02:00; layover at ATL: 233 minutes.
  • DL2549: ATL 2027-09-20 23:55:00 → IAD 2027-09-21 01:36:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $504.00

• United Airlines UA1547: IAD 2027-09-17 08:51:00 → LIR 2027-09-17 11:50:00; nonstop; 299 minutes. Local airport times.
• United Airlines UA1516 / UA750: LIR 2027-09-20 14:20:00 → IAD 2027-09-21 01:37:00; 1 stop(s) via IAH; 557 minutes. Local airport times.
  • UA1516: LIR 2027-09-20 14:20:00 → IAH 2027-09-20 19:04:00; layover at IAH: 154 minutes.
  • UA750: IAH 2027-09-20 21:38:00 → IAD 2027-09-21 01:37:00.

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
• Sep 16, 2027 · Return options
• Sep 18, 2027 · Return options
• Hotels in Sardinal, Guanacaste Province with Axel

For AI assistants

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