Travel with Axel,
get the best price.

Boise → Sacramento

Dec 21, 2026 · one way

BOI → SMF1 adulteconomyOne way

4 flight options · 3 airlines

Nonstop flights

Mon, Dec 21 · One way

Southwest Airlines
7:20 amBOI
1h 35m
Nonstop
7:55 amSMF

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Alaska Airlines
7:57 amBOI
1h 44m
Nonstop
8:41 amSMF

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
10:20 pmBOI
1h 35m
Nonstop
10:55 pmSMF

One-way total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 · One way

United Airlines
6:55 pmBOI
5h 49m
SFO · 2h 35m
11:44 pmSMF

One-way total · 1 adult · Taxes included

Make this trip yours

BOI ⇄ SMF

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 24, 2026 → Nov 29, 2026Dec 22, 2026 → Dec 27, 2026Dec 30, 2026 → Jan 2, 2027Jan 15, 2027 → Jan 18, 2027Oct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Jan 22, 2027 → Jan 25, 2027Oct 30, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 · one waySouthwest AirlinesWN947$175.502026-10-29T00:51:26Z
2026-12-21 · one wayAlaska AirlinesAS3117$188.502026-10-29T00:51:26Z
2026-12-21 · one wayUnited AirlinesUA4753 + UA5566$247.002026-10-29T00:51:26Z
2026-12-21 · one waySouthwest AirlinesWN784$175.502026-10-29T00:51:26Z

2026-12-21 · one way · $175.50

  • Southwest Airlines WN947: BOI 2026-12-21 07:20:00 → SMF 2026-12-21 07:55:00; nonstop; 95 minutes. Local airport times.

2026-12-21 · one way · $188.50

  • Alaska Airlines AS3117: BOI 2026-12-21 07:57:00 → SMF 2026-12-21 08:41:00; nonstop; 104 minutes. Local airport times.

2026-12-21 · one way · $247.00

  • United Airlines UA4753 / UA5566: BOI 2026-12-21 18:55:00 → SMF 2026-12-21 23:44:00; 1 stop(s) via SFO; 349 minutes. Local airport times.
    • UA4753: BOI 2026-12-21 18:55:00 → SFO 2026-12-21 20:10:00; layover at SFO: 155 minutes.
    • UA5566: SFO 2026-12-21 22:45:00 → SMF 2026-12-21 23:44:00.

2026-12-21 · one way · $175.50

  • Southwest Airlines WN784: BOI 2026-12-21 22:20:00 → SMF 2026-12-21 22:55:00; nonstop; 95 minutes. Local airport times.

More dates for this route