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Route overview: Seattle area (Sea-Tac and Paine Field) to San Francisco (SFO) flight deals

Seattle → San Francisco

Dec 3, 2026 · return Dec 9, 2026

SEA → SFO1 adulteconomyRound trip

12 flight options · 6 airlines

Nonstop flights

Thu, Dec 3 – Wed, Dec 9

Alaska Airlines
7:29 pmSEA
2h 11m
Nonstop
9:40 pmSFO
Alaska Airlines
5:42 pmSFO
2h 12m
Nonstop
7:54 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Dec 3 – Wed, Dec 9

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, Dec 3 – Wed, Dec 9

United Airlines
7:30 pmSEA
2h 12m
Nonstop
9:42 pmSFO
United Airlines
8:47 pmSFO
2h 10m
Nonstop
10:57 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Dec 3 – Wed, Dec 9

Alaska Airlines
7:16 amSEA
2h 21m
Nonstop
9:37 amSFO
Alaska Airlines
5:42 pmSFO
2h 12m
Nonstop
7:54 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Dec 3 – Wed, Dec 9

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, Dec 3 – Wed, Dec 9

United Airlines
3:34 pmSEA
2h 16m
Nonstop
5:50 pmSFO
United Airlines
8:47 pmSFO
2h 10m
Nonstop
10:57 pmSEA

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Dec 3 – Wed, Dec 9

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, Dec 3 – Wed, Dec 9

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, Dec 3 – Wed, Dec 9

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, Dec 3 – Wed, Dec 9

Alaska Airlines
12:22 pmSEA
4h 15m
PDX · 1h 17m
4:37 pmSFO
Alaska Airlines
5:42 pmSFO
2h 12m
Nonstop
7:54 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Dec 3 – Wed, Dec 9

Alaska Airlines
10:19 amSEA
5h 12m
GEG · 1h 38m
3:31 pmSFO
Alaska Airlines
5:42 pmSFO
2h 12m
Nonstop
7:54 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Dec 3 – Wed, Dec 9

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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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

Explore this route

All dates for this routeDec 2, 2026 → Dec 8, 2026Dec 4, 2026 → Dec 10, 2026Hotels in San Francisco with Axel
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Seattle area (Sea-Tac and Paine Field) to San Francisco (SFO) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-03 → 2026-12-09Alaska AirlinesAS590 / AS1340$235.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Delta Air LinesDL3699 / DL2721$245.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09United AirlinesUA737 / UA1896$250.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Frontier AirlinesF92176 + F94593 / F91230 + F91175$195.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09American AirlinesAA4997 + AA6448 / AA2211 + AA4997$325.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Air CanadaAC8807 + UA1083 / AC567 + AC8810$385.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Alaska AirlinesAS725 / AS1340$235.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Delta Air LinesDL2635 / DL2721$245.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09United AirlinesUA2478 / UA1896$250.002026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Alaska AirlinesAS488 + AS236 / AS1340$257.502026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Alaska AirlinesAS635 + AS3011 / AS1340$257.502026-10-29T00:39:30Z
2026-12-03 → 2026-12-09Delta Air LinesDL2914 + DL2197 / DL2721$280.002026-10-29T00:39:30Z

2026-12-03 → 2026-12-09 · $235.00

  • Alaska Airlines AS590: SEA 2026-12-03 19:29:00 → SFO 2026-12-03 21:40:00; nonstop; 131 minutes. Local airport times.
  • Alaska Airlines AS1340: SFO 2026-12-09 17:42:00 → SEA 2026-12-09 19:54:00; nonstop; 132 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $245.00

  • Delta Air Lines DL3699: SEA 2026-12-03 07:15:00 → SFO 2026-12-03 09:41:00; nonstop; 146 minutes. Local airport times.
  • Delta Air Lines DL2721: SFO 2026-12-09 06:17:00 → SEA 2026-12-09 08:35:00; nonstop; 138 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $250.00

  • United Airlines UA737: SEA 2026-12-03 19:30:00 → SFO 2026-12-03 21:42:00; nonstop; 132 minutes. Local airport times.
  • United Airlines UA1896: SFO 2026-12-09 20:47:00 → SEA 2026-12-09 22:57:00; nonstop; 130 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $195.00

  • Frontier Airlines F92176 / F94593: SEA 2026-12-03 13:36:00 → SFO 2026-12-03 20:08:00; 1 stop(s) via LAX; 392 minutes. Local airport times.
    • F92176: SEA 2026-12-03 13:36:00 → LAX 2026-12-03 16:18:00; layover at LAX: 142 minutes.
    • F94593: LAX 2026-12-03 18:40:00 → SFO 2026-12-03 20:08:00.
  • Frontier Airlines F91230 / F91175: SFO 2026-12-09 06:02:00 → SEA 2026-12-09 15:12:00; 1 stop(s) via DEN; 550 minutes. Local airport times.
    • F91230: SFO 2026-12-09 06:02:00 → DEN 2026-12-09 09:40:00; layover at DEN: 204 minutes.
    • F91175: DEN 2026-12-09 13:04:00 → SEA 2026-12-09 15:12:00.

2026-12-03 → 2026-12-09 · $325.00

  • American Airlines AA4997 / AA6448: SEA 2026-12-03 13:35:00 → SFO 2026-12-03 20:27:00; 1 stop(s) via LAX; 412 minutes. Local airport times.
    • AA4997: SEA 2026-12-03 13:35:00 → LAX 2026-12-03 16:31:00; layover at LAX: 140 minutes.
    • AA6448: LAX 2026-12-03 18:51:00 → SFO 2026-12-03 20:27:00.
  • American Airlines AA2211 / AA4997: SFO 2026-12-09 07:00:00 → SEA 2026-12-09 13:00:00; 1 stop(s) via LAX; 360 minutes. Local airport times.
    • AA2211: SFO 2026-12-09 07:00:00 → LAX 2026-12-09 08:37:00; layover at LAX: 77 minutes.
    • AA4997: LAX 2026-12-09 09:54:00 → SEA 2026-12-09 13:00:00.

2026-12-03 → 2026-12-09 · $385.00

  • Air Canada AC8807 / UA1083: SEA 2026-12-03 15:15:00 → SFO 2026-12-03 21:42:00; 1 stop(s) via YVR; 387 minutes. Local airport times.
    • AC8807: SEA 2026-12-03 15:15:00 → YVR 2026-12-03 17:26:00; layover at YVR: 169 minutes.
    • UA1083: YVR 2026-12-03 20:15:00 → SFO 2026-12-03 21:42:00.
  • Air Canada AC567 / AC8810: SFO 2026-12-09 14:45:00 → SEA 2026-12-09 21:57:00; 1 stop(s) via YVR; 432 minutes. Local airport times.
    • AC567: SFO 2026-12-09 14:45:00 → YVR 2026-12-09 18:05:00; layover at YVR: 225 minutes.
    • AC8810: YVR 2026-12-09 21:50:00 → SEA 2026-12-09 21:57:00.

2026-12-03 → 2026-12-09 · $235.00

  • Alaska Airlines AS725: SEA 2026-12-03 07:16:00 → SFO 2026-12-03 09:37:00; nonstop; 141 minutes. Local airport times.
  • Alaska Airlines AS1340: SFO 2026-12-09 17:42:00 → SEA 2026-12-09 19:54:00; nonstop; 132 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $245.00

  • Delta Air Lines DL2635: SEA 2026-12-03 19:52:00 → SFO 2026-12-03 22:08:00; nonstop; 136 minutes. Local airport times.
  • Delta Air Lines DL2721: SFO 2026-12-09 06:17:00 → SEA 2026-12-09 08:35:00; nonstop; 138 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $250.00

  • United Airlines UA2478: SEA 2026-12-03 15:34:00 → SFO 2026-12-03 17:50:00; nonstop; 136 minutes. Local airport times.
  • United Airlines UA1896: SFO 2026-12-09 20:47:00 → SEA 2026-12-09 22:57:00; nonstop; 130 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $257.50

  • Alaska Airlines AS488 / AS236: SEA 2026-12-03 12:22:00 → SFO 2026-12-03 16:37:00; 1 stop(s) via PDX; 255 minutes. Local airport times.
    • AS488: SEA 2026-12-03 12:22:00 → PDX 2026-12-03 13:24:00; layover at PDX: 77 minutes.
    • AS236: PDX 2026-12-03 14:41:00 → SFO 2026-12-03 16:37:00.
  • Alaska Airlines AS1340: SFO 2026-12-09 17:42:00 → SEA 2026-12-09 19:54:00; nonstop; 132 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $257.50

  • Alaska Airlines AS635 / AS3011: SEA 2026-12-03 10:19:00 → SFO 2026-12-03 15:31:00; 1 stop(s) via GEG; 312 minutes. Local airport times.
    • AS635: SEA 2026-12-03 10:19:00 → GEG 2026-12-03 11:30:00; layover at GEG: 98 minutes.
    • AS3011: GEG 2026-12-03 13:08:00 → SFO 2026-12-03 15:31:00.
  • Alaska Airlines AS1340: SFO 2026-12-09 17:42:00 → SEA 2026-12-09 19:54:00; nonstop; 132 minutes. Local airport times.

2026-12-03 → 2026-12-09 · $280.00

  • Delta Air Lines DL2914 / DL2197: SEA 2026-12-03 12:31:00 → SFO 2026-12-03 19:42:00; 1 stop(s) via LAX; 431 minutes. Local airport times.
    • DL2914: SEA 2026-12-03 12:31:00 → LAX 2026-12-03 15:13:00; layover at LAX: 178 minutes.
    • DL2197: LAX 2026-12-03 18:11:00 → SFO 2026-12-03 19:42:00.
  • Delta Air Lines DL2721: SFO 2026-12-09 06:17:00 → SEA 2026-12-09 08:35:00; nonstop; 138 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Seattle (SEA) to San Francisco (SFO) · Dec 3, 2026 · return Dec 9, 2026: 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 Seattle area (Sea-Tac and Paine Field) to San Francisco (SFO) 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.