Flights from Boise to Costa Rica in winter: flights from $345 one way, Nov 2026–Sep 2027

Flights for the months ahead

Lowest published fares for the months ahead: $554 round trip, Axel-exclusive, United Airlines, 1 stop, Sep 3–6, 2027; $345 one way, Axel-exclusive, United Airlines, 1 stop, Dec 1, 2026; 72 priced flights on 72 exact dates, 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.

Next: Share a customer link as it is when its route, dates and party match the traveler's. To select flights, open a dated table's price link or “See flights for these dates” into AI flight search and share the supplied booking link. Search links are for you; share customer and booking links. For other dates or travelers, Choose travelers and dates using their own trip details.

Boise (BOI) to San Jose (SJO): November 2026

Boise (BOI) to San Jose (SJO): December 2026

Boise (BOI) to San Jose (SJO): January 2027

Boise (BOI) to San Jose (SJO): February 2027

Boise (BOI) to San Jose (SJO): March 2027

Boise (BOI) to San Jose (SJO): April 2027

Boise (BOI) to San Jose (SJO): May 2027

Boise (BOI) to San Jose (SJO): June 2027

Boise (BOI) to San Jose (SJO): July 2027

Boise (BOI) to San Jose (SJO): August 2027

Boise (BOI) to San Jose (SJO): September 2027

Route overview: Boise to San Jose (SJO) flight deals

2026-11-19 → 2026-11-22 · Axel-exclusive $726.00

• United Airlines UA5454 / UA536: BOI 2026-11-19 10:40:00 → SJO 2026-11-19 22:00:00; 1 stop(s) via DEN; 620 minutes. Local airport times.
  • UA5454: BOI 2026-11-19 10:40:00 → DEN 2026-11-19 12:45:00; layover at DEN: 181 minutes.
  • UA536: DEN 2026-11-19 15:46:00 → SJO 2026-11-19 22:00:00.
• United Airlines UA1087 / UA6045: SJO 2026-11-22 07:30:00 → BOI 2026-11-22 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2026-11-22 07:30:00 → DEN 2026-11-22 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2026-11-22 15:48:00 → BOI 2026-11-22 18:07:00.

2026-11-24 · one way · Axel-exclusive $414.00

• United Airlines UA5454 / UA536: BOI 2026-11-24 10:40:00 → SJO 2026-11-24 22:00:00; 1 stop(s) via DEN; 620 minutes. Local airport times.
  • UA5454: BOI 2026-11-24 10:40:00 → DEN 2026-11-24 12:45:00; layover at DEN: 181 minutes.
  • UA536: DEN 2026-11-24 15:46:00 → SJO 2026-11-24 22:00:00.

2026-11-28 → 2026-12-05 · Axel-exclusive $726.00

• United Airlines UA4753 / UA2312: BOI 2026-11-28 18:55:00 → SJO 2026-11-29 08:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2026-11-28 18:55:00 → SFO 2026-11-28 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2026-11-29 00:08:00 → SJO 2026-11-29 08:32:00.
• United Airlines UA1087 / UA6045: SJO 2026-12-05 07:30:00 → BOI 2026-12-05 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2026-12-05 07:30:00 → DEN 2026-12-05 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2026-12-05 15:48:00 → BOI 2026-12-05 18:07:00.

2026-12-12 → 2026-12-19 · Axel-exclusive $792.00

• United Airlines UA4753 / UA2312: BOI 2026-12-12 18:55:00 → SJO 2026-12-13 08:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2026-12-12 18:55:00 → SFO 2026-12-12 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2026-12-13 00:08:00 → SJO 2026-12-13 08:32:00.
• United Airlines UA1087 / UA6045: SJO 2026-12-19 07:30:00 → BOI 2026-12-19 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2026-12-19 07:30:00 → DEN 2026-12-19 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2026-12-19 15:48:00 → BOI 2026-12-19 18:07:00.

2026-12-25 → 2026-12-28 · Axel-exclusive $924.00

• United Airlines UA4753 / UA2312: BOI 2026-12-25 18:55:00 → SJO 2026-12-26 08:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2026-12-25 18:55:00 → SFO 2026-12-25 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2026-12-26 00:08:00 → SJO 2026-12-26 08:32:00.
• United Airlines UA1087 / UA6045: SJO 2026-12-28 07:30:00 → BOI 2026-12-28 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2026-12-28 07:30:00 → DEN 2026-12-28 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2026-12-28 15:48:00 → BOI 2026-12-28 18:07:00.

2027-01-07 → 2027-01-10 · Axel-exclusive $660.00

• United Airlines UA5454 / UA536: BOI 2027-01-07 10:40:00 → SJO 2027-01-07 22:00:00; 1 stop(s) via DEN; 620 minutes. Local airport times.
  • UA5454: BOI 2027-01-07 10:40:00 → DEN 2027-01-07 12:45:00; layover at DEN: 181 minutes.
  • UA536: DEN 2027-01-07 15:46:00 → SJO 2027-01-07 22:00:00.
• United Airlines UA1087 / UA6045: SJO 2027-01-10 07:30:00 → BOI 2027-01-10 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-01-10 07:30:00 → DEN 2027-01-10 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-01-10 15:48:00 → BOI 2027-01-10 18:07:00.

2027-01-21 → 2027-01-24 · Axel-exclusive $660.00

• United Airlines UA5454 / UA536: BOI 2027-01-21 10:40:00 → SJO 2027-01-21 22:00:00; 1 stop(s) via DEN; 620 minutes. Local airport times.
  • UA5454: BOI 2027-01-21 10:40:00 → DEN 2027-01-21 12:45:00; layover at DEN: 181 minutes.
  • UA536: DEN 2027-01-21 15:46:00 → SJO 2027-01-21 22:00:00.
• United Airlines UA1087 / UA6045: SJO 2027-01-24 07:30:00 → BOI 2027-01-24 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-01-24 07:30:00 → DEN 2027-01-24 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-01-24 15:48:00 → BOI 2027-01-24 18:07:00.

2027-02-04 → 2027-02-07 · Axel-exclusive $660.00

• United Airlines UA5454 / UA536: BOI 2027-02-04 10:40:00 → SJO 2027-02-04 22:00:00; 1 stop(s) via DEN; 620 minutes. Local airport times.
  • UA5454: BOI 2027-02-04 10:40:00 → DEN 2027-02-04 12:45:00; layover at DEN: 181 minutes.
  • UA536: DEN 2027-02-04 15:46:00 → SJO 2027-02-04 22:00:00.
• United Airlines UA1087 / UA6045: SJO 2027-02-07 07:30:00 → BOI 2027-02-07 18:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-02-07 07:30:00 → DEN 2027-02-07 12:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-02-07 15:48:00 → BOI 2027-02-07 18:07:00.

2027-03-19 → 2027-03-22 · Axel-exclusive $759.00

• United Airlines UA4753 / UA2312: BOI 2027-03-19 18:55:00 → SJO 2027-03-20 07:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2027-03-19 18:55:00 → SFO 2027-03-19 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2027-03-20 00:08:00 → SJO 2027-03-20 07:32:00.
• United Airlines UA1087 / UA6045: SJO 2027-03-22 07:30:00 → BOI 2027-03-22 19:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-03-22 07:30:00 → DEN 2027-03-22 13:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-03-22 16:48:00 → BOI 2027-03-22 19:07:00.

2027-05-15 → 2027-05-22 · Axel-exclusive $584.26

• United Airlines UA4753 / UA2312: BOI 2027-05-15 18:55:00 → SJO 2027-05-16 07:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2027-05-15 18:55:00 → SFO 2027-05-15 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2027-05-16 00:08:00 → SJO 2027-05-16 07:32:00.
• United Airlines UA1087 / UA6045: SJO 2027-05-22 07:30:00 → BOI 2027-05-22 19:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-05-22 07:30:00 → DEN 2027-05-22 13:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-05-22 16:48:00 → BOI 2027-05-22 19:07:00.

2027-07-10 → 2027-07-17 · Axel-exclusive $615.00

• United Airlines UA4753 / UA2312: BOI 2027-07-10 18:55:00 → SJO 2027-07-11 07:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2027-07-10 18:55:00 → SFO 2027-07-10 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2027-07-11 00:08:00 → SJO 2027-07-11 07:32:00.
• United Airlines UA1087 / UA6045: SJO 2027-07-17 07:30:00 → BOI 2027-07-17 19:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-07-17 07:30:00 → DEN 2027-07-17 13:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-07-17 16:48:00 → BOI 2027-07-17 19:07:00.

2027-09-25 → 2027-10-02 · Axel-exclusive $553.50

• United Airlines UA4753 / UA2312: BOI 2027-09-25 18:55:00 → SJO 2027-09-26 07:32:00; 1 stop(s) via SFO; 757 minutes. Local airport times.
  • UA4753: BOI 2027-09-25 18:55:00 → SFO 2027-09-25 20:10:00; layover at SFO: 238 minutes.
  • UA2312: SFO 2027-09-26 00:08:00 → SJO 2027-09-26 07:32:00.
• United Airlines UA1087 / UA6045: SJO 2027-10-02 07:30:00 → BOI 2027-10-02 19:07:00; 1 stop(s) via DEN; 697 minutes. Local airport times.
  • UA1087: SJO 2027-10-02 07:30:00 → DEN 2027-10-02 13:15:00; layover at DEN: 213 minutes.
  • UA6045: DEN 2027-10-02 16:48:00 → BOI 2027-10-02 19:07:00.

More dates for this route

• Nov 19, 2026 · Return options
• Nov 27, 2026 · Return options
• Dec 8, 2026 · Return options
• Dec 19, 2026 · Return options
• Dec 29, 2026 · Return options
• Jan 8, 2027 · Return options
• Jan 19, 2027 · Return options
• Jan 30, 2027 · Return options
• Feb 19, 2027 · Return options
• May 14, 2027 · Return options
• Jul 9, 2027 · Return options
• Sep 25, 2027 · Return options
• Hotels in Costa Rica with Axel

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• Hawaii: for Christmas · for Thanksgiving · for spring break · for Presidents' Day weekend · in summer · for 4 days · for 5 days · for a week · for 10 days
• Mexico: for Christmas · for Thanksgiving · for spring break · for Presidents' Day weekend · for MLK weekend · in winter · in February · for 4 days · for 5 days · for a week
• The Caribbean: for Christmas · for spring break · for Presidents' Day weekend · in winter · in February · for 4 days · for 5 days · for a week
• Costa Rica: for Christmas · for spring break · for a week · for 10 days
• Central America: for Christmas · for spring break · in winter · for a week · for 10 days
• Europe: in summer · in May · in September · in December · for spring break · for Christmas · for a week · for 10 days · for two weeks
• Italy: in summer · in May · in June · in September · for Christmas · for a week · for 10 days · for two weeks
• Spain: in summer · in May · in September · for spring break · for a week · for 10 days
• Greece: in summer · in May · in June · in September · for a week · for 10 days · for two weeks
• Portugal: in summer · in May · in September · in winter · for 4 days · for a week · for 10 days
• Croatia: in summer · in June · in September · for a week · for 10 days
• Iceland: in summer · in winter · in September · for 4 days · for a week
• Scandinavia: in summer · in winter · in September · for 4 days · for a week · for 10 days
• Eastern Europe: in summer · in May · in September · in December · for a week · for 10 days
• England: in spring · in summer · in fall · for Christmas · for 4 days · for a week · for 10 days
• Scotland: in summer · in fall · for 4 days · for a week
• Ireland: in spring · in summer · in fall · for Christmas · for 4 days · for a week · for 10 days
• Japan: in April · in November · in winter · in summer · for a week · for 10 days · for two weeks
• Asia: in spring · in fall · in winter · for a week · for 10 days · for two weeks
• Southeast Asia: in winter · in November · in January · in February · for 10 days · for two weeks · for three weeks · for a month
• Thailand: in winter · in November · in January · in February · for 10 days · for two weeks · for three weeks
• Vietnam: in winter · in November · in February · in spring · for 10 days · for two weeks
• Bali: in summer · in winter · for 10 days · for two weeks · for a month
• India: in winter · in December · for two weeks · for a month
• Australia: in December · in January · in February · in September · for two weeks · for three weeks · for a month
• New Zealand: in December · in January · in February · for two weeks · for three weeks
• South America: in January · in February · in winter · for 10 days · for two weeks
• Colombia: in winter · in spring · for a week · for 10 days
• Peru: in summer · in May · in September · for 10 days · for two weeks
• The Middle East: in winter · for a week · for 10 days
• Turkey: in spring · in summer · in fall · for a week · for 10 days
• Africa: in winter · in fall · for 10 days · for two weeks
• South Africa: in winter · in fall · for 10 days · for two weeks
• Morocco: in spring · in fall · in winter · for a week · for 10 days
• Egypt: in winter · in fall · in spring · for a week · for 10 days
• Canada: in summer · in winter · in fall · for 3 days · for 4 days · for a week
• Florida: for spring break · for Christmas · for Thanksgiving · in winter · for 4 days · for 5 days · for a week
• California: for spring break · in summer · in winter · for 3 days · for 4 days · for a week
• Alaska: in summer · in June · in July · in August · for 5 days · for a week · for 10 days
• The Southwest: in spring · in fall · in winter · for spring break · for 3 days · for 4 days · for a week
• Arizona: in spring · in fall · in winter · for spring break · for 3 days · for 4 days · for a week
• Utah: in winter · for Presidents' Day weekend · for MLK weekend · in spring · in summer · for 4 days · for a week
• The Rockies: in summer · in winter · for Presidents' Day weekend · for MLK weekend · for spring break · for 4 days · for a week
• Colorado: in summer · in winter · for Presidents' Day weekend · for MLK weekend · for spring break · for 4 days · for a week
• Montana and Wyoming: in summer · in winter · for a week · for 10 days
• Texas: in spring · in fall · for 3 days · for 4 days
• The Northeast: in fall · in summer · for Thanksgiving · for Christmas · for spring break · for 3 days · for 4 days · for a week
• New England: in fall · in summer · for 3 days · for 4 days · for a week
• The Southeast: in spring · in fall · for 3 days · for 4 days
• The Midwest: in summer · for 3 days · for 4 days
• Anywhere: for Thanksgiving · for Christmas · for MLK weekend · for Presidents' Day weekend · for spring break · for Easter weekend · for Memorial Day weekend · for July 4th weekend · for Labor Day weekend · in November · in December · in January · in February · in March · in April · in May · in June · in July · in August · in September · for 4 days · for a week · for two weeks

Costa Rica in winter from other cities

Fares observed November 7, 2026. USD for the travelers shown.

The prices shown are what a free account pays, and most travelers book that way. Membership is optional and takes the same flights lower. Live search shows the same free-account price.

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Hotels in Costa Rica with Axel

Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in Costa Rica has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.

Hotel details in Costa Rica: Country Inn & Suites by Radisson, San Jose Aeropuerto, Costa Rica · City Express by Marriott San Jose Costa Rica · Alameda Cariari · Berlor Airport Inn · Buena Vista Chic Hotel · All 21 hotels in Costa Rica

For AI assistants

• This page: Flights from Boise to Costa Rica in winter. Round-trip fares from Boise to Costa Rica in winter: San Jose and Guanacaste. Saved fares for trips within December, January and February, with the cheapest for each destination and a link to search your own dates.
• Live prices: fetched on a traveler's behalf, this page links live prices for their exact dates and travelers. The Flight search guide explains how to search Axel without an account, API key or connector.