Travel with Axel,
get the best price.

Helena → San Francisco

Choose your travel dates

HLN → SFO1 adulteconomy

6 flight options · 2 airlines

Round-trip flights

Fri, Nov 27 – Fri, Dec 4

Alaska Airlines
4:49 pmHLN
6h 57m
SEA · 2h 50m
10:46 pmSFO
Alaska Airlines
8:33 amSFO
6h 39m
SEA · 2h 43m
4:12 pmHLN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
7:03 amHLN
6h 30m
SLC · 2h 30m
12:33 pmSFO
Delta Air Lines
6:00 amSFO
5h 27m
SLC · 1h 57m
12:27 pmHLN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Alaska Airlines
4:49 pmHLN
6h 57m
SEA · 2h 50m
10:46 pmSFO
Alaska Airlines
8:33 amSFO
6h 39m
SEA · 2h 43m
4:12 pmHLN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
7:03 amHLN
6h 30m
SLC · 2h 30m
12:33 pmSFO
Delta Air Lines
6:00 amSFO
5h 27m
SLC · 1h 57m
12:27 pmHLN

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

Alaska Airlines
4:49 pmHLN
6h 57m
SEA · 2h 50m
10:46 pmSFO

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
7:03 amHLN
6h 30m
SLC · 2h 30m
12:33 pmSFO

One-way total · 1 adult · Taxes included

Make this trip yours

HLN ⇄ SFO

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, Alaska 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.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. 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

Nov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 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)
2026-11-20 · one wayAlaska AirlinesAS2126 + AS619$210.002026-10-29T01:02:46Z
2026-11-20 · one wayDelta Air LinesDL3901 + DL902$225.002026-10-29T01:02:46Z
2026-11-27 → 2026-12-04Alaska AirlinesAS2126 + AS619 / AS1327 + AS2126$448.502026-10-29T01:02:46Z
2026-11-20 → 2026-11-23Delta Air LinesDL3901 + DL902 / DL1331 + DL3880$483.002026-10-29T01:02:46Z
2026-11-20 → 2026-11-23Alaska AirlinesAS2126 + AS619 / AS1327 + AS2126$448.502026-10-29T01:02:46Z
2026-11-27 → 2026-12-04Delta Air LinesDL3901 + DL902 / DL1331 + DL3880$483.002026-10-29T01:02:46Z

2026-11-20 · one way · $210.00

  • Alaska Airlines AS2126 / AS619: HLN 2026-11-20 16:49:00 → SFO 2026-11-20 22:46:00; 1 stop(s) via SEA; 417 minutes. Local airport times.
    • AS2126: HLN 2026-11-20 16:49:00 → SEA 2026-11-20 17:45:00; layover at SEA: 170 minutes.
    • AS619: SEA 2026-11-20 20:35:00 → SFO 2026-11-20 22:46:00.

2026-11-20 · one way · $225.00

  • Delta Air Lines DL3901 / DL902: HLN 2026-11-20 07:03:00 → SFO 2026-11-20 12:33:00; 1 stop(s) via SLC; 390 minutes. Local airport times.
    • DL3901: HLN 2026-11-20 07:03:00 → SLC 2026-11-20 08:40:00; layover at SLC: 150 minutes.
    • DL902: SLC 2026-11-20 11:10:00 → SFO 2026-11-20 12:33:00.

2026-11-27 → 2026-12-04 · $448.50

  • Alaska Airlines AS2126 / AS619: HLN 2026-11-27 16:49:00 → SFO 2026-11-27 22:46:00; 1 stop(s) via SEA; 417 minutes. Local airport times.
    • AS2126: HLN 2026-11-27 16:49:00 → SEA 2026-11-27 17:45:00; layover at SEA: 170 minutes.
    • AS619: SEA 2026-11-27 20:35:00 → SFO 2026-11-27 22:46:00.
  • Alaska Airlines AS1327 / AS2126: SFO 2026-12-04 08:33:00 → HLN 2026-12-04 16:12:00; 1 stop(s) via SEA; 399 minutes. Local airport times.
    • AS1327: SFO 2026-12-04 08:33:00 → SEA 2026-12-04 10:52:00; layover at SEA: 163 minutes.
    • AS2126: SEA 2026-12-04 13:35:00 → HLN 2026-12-04 16:12:00.

2026-11-20 → 2026-11-23 · $483.00

  • Delta Air Lines DL3901 / DL902: HLN 2026-11-20 07:03:00 → SFO 2026-11-20 12:33:00; 1 stop(s) via SLC; 390 minutes. Local airport times.
    • DL3901: HLN 2026-11-20 07:03:00 → SLC 2026-11-20 08:40:00; layover at SLC: 150 minutes.
    • DL902: SLC 2026-11-20 11:10:00 → SFO 2026-11-20 12:33:00.
  • Delta Air Lines DL1331 / DL3880: SFO 2026-11-23 06:00:00 → HLN 2026-11-23 12:27:00; 1 stop(s) via SLC; 327 minutes. Local airport times.
    • DL1331: SFO 2026-11-23 06:00:00 → SLC 2026-11-23 08:53:00; layover at SLC: 117 minutes.
    • DL3880: SLC 2026-11-23 10:50:00 → HLN 2026-11-23 12:27:00.

2026-11-20 → 2026-11-23 · $448.50

  • Alaska Airlines AS2126 / AS619: HLN 2026-11-20 16:49:00 → SFO 2026-11-20 22:46:00; 1 stop(s) via SEA; 417 minutes. Local airport times.
    • AS2126: HLN 2026-11-20 16:49:00 → SEA 2026-11-20 17:45:00; layover at SEA: 170 minutes.
    • AS619: SEA 2026-11-20 20:35:00 → SFO 2026-11-20 22:46:00.
  • Alaska Airlines AS1327 / AS2126: SFO 2026-11-23 08:33:00 → HLN 2026-11-23 16:12:00; 1 stop(s) via SEA; 399 minutes. Local airport times.
    • AS1327: SFO 2026-11-23 08:33:00 → SEA 2026-11-23 10:52:00; layover at SEA: 163 minutes.
    • AS2126: SEA 2026-11-23 13:35:00 → HLN 2026-11-23 16:12:00.

2026-11-27 → 2026-12-04 · $483.00

  • Delta Air Lines DL3901 / DL902: HLN 2026-11-27 07:03:00 → SFO 2026-11-27 12:33:00; 1 stop(s) via SLC; 390 minutes. Local airport times.
    • DL3901: HLN 2026-11-27 07:03:00 → SLC 2026-11-27 08:40:00; layover at SLC: 150 minutes.
    • DL902: SLC 2026-11-27 11:10:00 → SFO 2026-11-27 12:33:00.
  • Delta Air Lines DL1331 / DL3880: SFO 2026-12-04 06:00:00 → HLN 2026-12-04 12:27:00; 1 stop(s) via SLC; 327 minutes. Local airport times.
    • DL1331: SFO 2026-12-04 06:00:00 → SLC 2026-12-04 08:53:00; layover at SLC: 117 minutes.
    • DL3880: SLC 2026-12-04 10:50:00 → HLN 2026-12-04 12:27:00.

More dates for this route