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Seattle → San Francisco

Jan 21, 2027 · return Feb 4, 2027

SEA → SFO1 adulteconomyRound trip

12 flight options · 6 airlines

Nonstop flights

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
7:16 amSEA
2h 21m
Nonstop
9:37 amSFO
Alaska Airlines
3:50 pmSFO
2h 12m
Nonstop
6:02 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Delta Air Lines
7:15 amSEA
2h 26m
Nonstop
9:41 amSFO
Delta Air Lines
6:17 amSFO
2h 18m
Nonstop
8:35 amSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

United Airlines
3:34 pmSEA
2h 16m
Nonstop
5:50 pmSFO
United Airlines
9:08 pmSFO
2h 10m
Nonstop
11:18 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
7:29 pmSEA
2h 11m
Nonstop
9:40 pmSFO
Alaska Airlines
3:50 pmSFO
2h 12m
Nonstop
6:02 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Delta Air Lines
7:52 pmSEA
2h 16m
Nonstop
10:08 pmSFO
Delta Air Lines
6:17 amSFO
2h 18m
Nonstop
8:35 amSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

United Airlines
7:30 pmSEA
2h 12m
Nonstop
9:42 pmSFO
United Airlines
9:08 pmSFO
2h 10m
Nonstop
11:18 pmSEA

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Feb 4

Frontier Airlines
1:36 pmSEA
6h 32m
LAX · 2h 22m
8:08 pmSFO
Frontier Airlines
6:02 amSFO
9h 10m
DEN · 3h 24m
3:12 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

American Airlines
1:35 pmSEA
6h 52m
LAX · 2h 20m
8:27 pmSFO
American Airlines
7:00 amSFO
6h
LAX · 1h 17m
1:00 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Air Canada
3:15 pmSEA
6h 27m
YVR · 2h 49m
9:42 pmSFO
Air Canada
2:45 pmSFO
7h 12m
YVR · 3h 45m
9:57 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
12:22 pmSEA
4h 15m
PDX · 1h 17m
4:37 pmSFO
Alaska Airlines
3:50 pmSFO
2h 12m
Nonstop
6:02 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
10:19 amSEA
5h 12m
GEG · 1h 38m
3:31 pmSFO
Alaska Airlines
3:50 pmSFO
2h 12m
Nonstop
6:02 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Delta Air Lines
12:31 pmSEA
7h 11m
LAX · 2h 58m
7:42 pmSFO
Delta Air Lines
6:17 amSFO
2h 18m
Nonstop
8:35 amSEA

Round-trip total · 1 adult · Taxes included

Make this trip yours

SEA ⇄ SFO

Economy

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

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  • 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.
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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 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)
2027-01-21 → 2027-02-04Alaska AirlinesAS725 / AS591$235.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Delta Air LinesDL3699 / DL2721$245.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04United AirlinesUA2478 / UA1007$250.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Frontier AirlinesF92176 + F94593 / F91230 + F91175$195.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04American AirlinesAA4997 + AA6448 / AA2211 + AA4997$325.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Air CanadaAC8807 + UA1083 / AC567 + AC8810$385.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Alaska AirlinesAS590 / AS591$235.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Delta Air LinesDL2635 / DL2721$245.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04United AirlinesUA737 / UA1007$250.002026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Alaska AirlinesAS488 + AS236 / AS591$257.502026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Alaska AirlinesAS635 + AS3011 / AS591$257.502026-10-29T00:39:30Z
2027-01-21 → 2027-02-04Delta Air LinesDL2914 + DL2197 / DL2721$280.002026-10-29T00:39:30Z

2027-01-21 → 2027-02-04 · $235.00

  • Alaska Airlines AS725: SEA 2027-01-21 07:16:00 → SFO 2027-01-21 09:37:00; nonstop; 141 minutes. Local airport times.
  • Alaska Airlines AS591: SFO 2027-02-04 15:50:00 → SEA 2027-02-04 18:02:00; nonstop; 132 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $245.00

  • Delta Air Lines DL3699: SEA 2027-01-21 07:15:00 → SFO 2027-01-21 09:41:00; nonstop; 146 minutes. Local airport times.
  • Delta Air Lines DL2721: SFO 2027-02-04 06:17:00 → SEA 2027-02-04 08:35:00; nonstop; 138 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $250.00

  • United Airlines UA2478: SEA 2027-01-21 15:34:00 → SFO 2027-01-21 17:50:00; nonstop; 136 minutes. Local airport times.
  • United Airlines UA1007: SFO 2027-02-04 21:08:00 → SEA 2027-02-04 23:18:00; nonstop; 130 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $195.00

  • Frontier Airlines F92176 / F94593: SEA 2027-01-21 13:36:00 → SFO 2027-01-21 20:08:00; 1 stop(s) via LAX; 392 minutes. Local airport times.
    • F92176: SEA 2027-01-21 13:36:00 → LAX 2027-01-21 16:18:00; layover at LAX: 142 minutes.
    • F94593: LAX 2027-01-21 18:40:00 → SFO 2027-01-21 20:08:00.
  • Frontier Airlines F91230 / F91175: SFO 2027-02-04 06:02:00 → SEA 2027-02-04 15:12:00; 1 stop(s) via DEN; 550 minutes. Local airport times.
    • F91230: SFO 2027-02-04 06:02:00 → DEN 2027-02-04 09:40:00; layover at DEN: 204 minutes.
    • F91175: DEN 2027-02-04 13:04:00 → SEA 2027-02-04 15:12:00.

2027-01-21 → 2027-02-04 · $325.00

  • American Airlines AA4997 / AA6448: SEA 2027-01-21 13:35:00 → SFO 2027-01-21 20:27:00; 1 stop(s) via LAX; 412 minutes. Local airport times.
    • AA4997: SEA 2027-01-21 13:35:00 → LAX 2027-01-21 16:31:00; layover at LAX: 140 minutes.
    • AA6448: LAX 2027-01-21 18:51:00 → SFO 2027-01-21 20:27:00.
  • American Airlines AA2211 / AA4997: SFO 2027-02-04 07:00:00 → SEA 2027-02-04 13:00:00; 1 stop(s) via LAX; 360 minutes. Local airport times.
    • AA2211: SFO 2027-02-04 07:00:00 → LAX 2027-02-04 08:37:00; layover at LAX: 77 minutes.
    • AA4997: LAX 2027-02-04 09:54:00 → SEA 2027-02-04 13:00:00.

2027-01-21 → 2027-02-04 · $385.00

  • Air Canada AC8807 / UA1083: SEA 2027-01-21 15:15:00 → SFO 2027-01-21 21:42:00; 1 stop(s) via YVR; 387 minutes. Local airport times.
    • AC8807: SEA 2027-01-21 15:15:00 → YVR 2027-01-21 17:26:00; layover at YVR: 169 minutes.
    • UA1083: YVR 2027-01-21 20:15:00 → SFO 2027-01-21 21:42:00.
  • Air Canada AC567 / AC8810: SFO 2027-02-04 14:45:00 → SEA 2027-02-04 21:57:00; 1 stop(s) via YVR; 432 minutes. Local airport times.
    • AC567: SFO 2027-02-04 14:45:00 → YVR 2027-02-04 18:05:00; layover at YVR: 225 minutes.
    • AC8810: YVR 2027-02-04 21:50:00 → SEA 2027-02-04 21:57:00.

2027-01-21 → 2027-02-04 · $235.00

  • Alaska Airlines AS590: SEA 2027-01-21 19:29:00 → SFO 2027-01-21 21:40:00; nonstop; 131 minutes. Local airport times.
  • Alaska Airlines AS591: SFO 2027-02-04 15:50:00 → SEA 2027-02-04 18:02:00; nonstop; 132 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $245.00

  • Delta Air Lines DL2635: SEA 2027-01-21 19:52:00 → SFO 2027-01-21 22:08:00; nonstop; 136 minutes. Local airport times.
  • Delta Air Lines DL2721: SFO 2027-02-04 06:17:00 → SEA 2027-02-04 08:35:00; nonstop; 138 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $250.00

  • United Airlines UA737: SEA 2027-01-21 19:30:00 → SFO 2027-01-21 21:42:00; nonstop; 132 minutes. Local airport times.
  • United Airlines UA1007: SFO 2027-02-04 21:08:00 → SEA 2027-02-04 23:18:00; nonstop; 130 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $257.50

  • Alaska Airlines AS488 / AS236: SEA 2027-01-21 12:22:00 → SFO 2027-01-21 16:37:00; 1 stop(s) via PDX; 255 minutes. Local airport times.
    • AS488: SEA 2027-01-21 12:22:00 → PDX 2027-01-21 13:24:00; layover at PDX: 77 minutes.
    • AS236: PDX 2027-01-21 14:41:00 → SFO 2027-01-21 16:37:00.
  • Alaska Airlines AS591: SFO 2027-02-04 15:50:00 → SEA 2027-02-04 18:02:00; nonstop; 132 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $257.50

  • Alaska Airlines AS635 / AS3011: SEA 2027-01-21 10:19:00 → SFO 2027-01-21 15:31:00; 1 stop(s) via GEG; 312 minutes. Local airport times.
    • AS635: SEA 2027-01-21 10:19:00 → GEG 2027-01-21 11:30:00; layover at GEG: 98 minutes.
    • AS3011: GEG 2027-01-21 13:08:00 → SFO 2027-01-21 15:31:00.
  • Alaska Airlines AS591: SFO 2027-02-04 15:50:00 → SEA 2027-02-04 18:02:00; nonstop; 132 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $280.00

  • Delta Air Lines DL2914 / DL2197: SEA 2027-01-21 12:31:00 → SFO 2027-01-21 19:42:00; 1 stop(s) via LAX; 431 minutes. Local airport times.
    • DL2914: SEA 2027-01-21 12:31:00 → LAX 2027-01-21 15:13:00; layover at LAX: 178 minutes.
    • DL2197: LAX 2027-01-21 18:11:00 → SFO 2027-01-21 19:42:00.
  • Delta Air Lines DL2721: SFO 2027-02-04 06:17:00 → SEA 2027-02-04 08:35:00; nonstop; 138 minutes. Local airport times.

More dates for this route