Boston (BOS) to Guanacaste (LIR) · Dec 4, 2026 · one way

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: Boston to Guanacaste (LIR) flight deals

2026-12-04 · one way · Axel-exclusive $295.00

• JetBlue Airways B6897: BOS 2026-12-04 07:52:00 → LIR 2026-12-04 12:45:00; nonstop; 353 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $270.00

• Air Canada AC763 / AC1873: BOS 2026-12-04 05:45:00 → LIR 2026-12-04 14:10:00; 1 stop(s) via YYZ; 565 minutes. Local airport times.
  • AC763: BOS 2026-12-04 05:45:00 → YYZ 2026-12-04 07:50:00; layover at YYZ: 100 minutes.
  • AC1873: YYZ 2026-12-04 09:30:00 → LIR 2026-12-04 14:10:00.

2026-12-04 · one way · Axel-exclusive $280.00

• American Airlines AA1249 / AA887: BOS 2026-12-04 05:00:00 → LIR 2026-12-04 12:30:00; 1 stop(s) via CLT; 510 minutes. Local airport times.
  • AA1249: BOS 2026-12-04 05:00:00 → CLT 2026-12-04 07:34:00; layover at CLT: 96 minutes.
  • AA887: CLT 2026-12-04 09:10:00 → LIR 2026-12-04 12:30:00.

2026-12-04 · one way · Axel-exclusive $285.00

• United Airlines UA1388 / UA1737: BOS 2026-12-04 09:30:00 → LIR 2026-12-04 18:37:00; 1 stop(s) via IAH; 607 minutes. Local airport times.
  • UA1388: BOS 2026-12-04 09:30:00 → IAH 2026-12-04 13:06:00; layover at IAH: 119 minutes.
  • UA1737: IAH 2026-12-04 15:05:00 → LIR 2026-12-04 18:37:00.

2026-12-04 · one way · Axel-exclusive $255.00

• JetBlue Airways B6569 / B61157: BOS 2026-12-04 05:30:00 → LIR 2026-12-04 14:04:00; 1 stop(s) via FLL; 574 minutes. Local airport times.
  • B6569: BOS 2026-12-04 05:30:00 → FLL 2026-12-04 08:56:00; layover at FLL: 184 minutes.
  • B61157: FLL 2026-12-04 12:00:00 → LIR 2026-12-04 14:04:00.

2026-12-04 · one way · Axel-exclusive $270.00

• Air Canada AC8603 / AC1863: BOS 2026-12-04 05:30:00 → LIR 2026-12-04 14:20:00; 1 stop(s) via YUL; 590 minutes. Local airport times.
  • AC8603: BOS 2026-12-04 05:30:00 → YUL 2026-12-04 06:55:00; layover at YUL: 130 minutes.
  • AC1863: YUL 2026-12-04 09:05:00 → LIR 2026-12-04 14:20:00.

2026-12-04 · one way · Axel-exclusive $285.00

• United Airlines UA1734 / UA1547: BOS 2026-12-04 05:45:00 → LIR 2026-12-04 12:50:00; 1 stop(s) via IAD; 485 minutes. Local airport times.
  • UA1734: BOS 2026-12-04 05:45:00 → IAD 2026-12-04 07:25:00; layover at IAD: 86 minutes.
  • UA1547: IAD 2026-12-04 08:51:00 → LIR 2026-12-04 12:50:00.

Explore this route

• All dates for this route
• Dec 3, 2026 · Return options
• Dec 5, 2026 · Return options
• Hotels in Sardinal, Guanacaste Province with Axel

For AI assistants

• This page: Boston (BOS) to Guanacaste (LIR) · Dec 4, 2026 · one way: 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 Boston to Guanacaste (LIR) 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.

Feedback (optional): Missing info · Axel issue