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San Francisco → Seattle

Dec 21, 2026 · one way

SFO → SEA1 adulteconomyOne way

12 flight options · 6 airlines

Nonstop flights

Mon, Dec 21 · One way

Alaska Airlines
6:00 amSFO
2h 15m
Nonstop
8:15 amSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
6:17 amSFO
2h 18m
Nonstop
8:35 amSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
2:20 pmSFO
2h 12m
Nonstop
4:32 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Alaska Airlines
5:42 pmSFO
2h 12m
Nonstop
7:54 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
5:53 pmSFO
2h 20m
Nonstop
8:13 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
10:35 pmSFO
2h 10m
Nonstop
12:45 am+1SEA

One-way total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 · One way

Frontier Airlines
6:02 amSFO
9h 10m
DEN · 3h 24m
3:12 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

American Airlines
7:00 amSFO
6h
LAX · 1h 17m
1:00 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Air Canada
2:45 pmSFO
7h 12m
YVR · 3h 45m
9:57 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Alaska Airlines
7:40 amSFO
4h 29m
PDX · 1h 27m
12:09 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
8:31 amSFO
6h 1m
YVR · 2h 30m
2:32 pmSEA

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
5:50 amSFO
5h 36m
LAX · 1h 5m
11:26 amSEA

One-way total · 1 adult · Taxes included

Make this trip yours

SFO ⇄ SEA

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

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)
2026-12-21 · one wayAlaska AirlinesAS1327$149.502026-10-29T01:19:49Z
2026-12-21 · one wayDelta Air LinesDL2721$156.002026-10-29T01:19:49Z
2026-12-21 · one wayUnited AirlinesUA433$162.502026-10-29T01:19:49Z
2026-12-21 · one wayFrontier AirlinesF91230 + F91175$110.502026-10-29T01:19:49Z
2026-12-21 · one wayAmerican AirlinesAA2211 + AA4997$214.502026-10-29T01:19:49Z
2026-12-21 · one wayAir CanadaAC567 + AC8810$279.502026-10-29T01:19:49Z
2026-12-21 · one wayAlaska AirlinesAS1340$149.502026-10-29T01:19:49Z
2026-12-21 · one wayDelta Air LinesDL3707$156.002026-10-29T01:19:49Z
2026-12-21 · one wayUnited AirlinesUA1761$162.502026-10-29T01:19:49Z
2026-12-21 · one wayAlaska AirlinesAS1410 + AS3217$175.502026-10-29T01:19:49Z
2026-12-21 · one wayUnited AirlinesUA2259 + AC8804$201.502026-10-29T01:19:49Z
2026-12-21 · one wayUnited AirlinesUA2127 + UA726$201.502026-10-29T01:19:49Z

2026-12-21 · one way · $149.50

  • Alaska Airlines AS1327: SFO 2026-12-21 06:00:00 → SEA 2026-12-21 08:15:00; nonstop; 135 minutes. Local airport times.

2026-12-21 · one way · $156.00

  • Delta Air Lines DL2721: SFO 2026-12-21 06:17:00 → SEA 2026-12-21 08:35:00; nonstop; 138 minutes. Local airport times.

2026-12-21 · one way · $162.50

  • United Airlines UA433: SFO 2026-12-21 14:20:00 → SEA 2026-12-21 16:32:00; nonstop; 132 minutes. Local airport times.

2026-12-21 · one way · $110.50

  • Frontier Airlines F91230 / F91175: SFO 2026-12-21 06:02:00 → SEA 2026-12-21 15:12:00; 1 stop(s) via DEN; 550 minutes. Local airport times.
    • F91230: SFO 2026-12-21 06:02:00 → DEN 2026-12-21 09:40:00; layover at DEN: 204 minutes.
    • F91175: DEN 2026-12-21 13:04:00 → SEA 2026-12-21 15:12:00.

2026-12-21 · one way · $214.50

  • American Airlines AA2211 / AA4997: SFO 2026-12-21 07:00:00 → SEA 2026-12-21 13:00:00; 1 stop(s) via LAX; 360 minutes. Local airport times.
    • AA2211: SFO 2026-12-21 07:00:00 → LAX 2026-12-21 08:37:00; layover at LAX: 77 minutes.
    • AA4997: LAX 2026-12-21 09:54:00 → SEA 2026-12-21 13:00:00.

2026-12-21 · one way · $279.50

  • Air Canada AC567 / AC8810: SFO 2026-12-21 14:45:00 → SEA 2026-12-21 21:57:00; 1 stop(s) via YVR; 432 minutes. Local airport times.
    • AC567: SFO 2026-12-21 14:45:00 → YVR 2026-12-21 18:05:00; layover at YVR: 225 minutes.
    • AC8810: YVR 2026-12-21 21:50:00 → SEA 2026-12-21 21:57:00.

2026-12-21 · one way · $149.50

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

2026-12-21 · one way · $156.00

  • Delta Air Lines DL3707: SFO 2026-12-21 17:53:00 → SEA 2026-12-21 20:13:00; nonstop; 140 minutes. Local airport times.

2026-12-21 · one way · $162.50

  • United Airlines UA1761: SFO 2026-12-21 22:35:00 → SEA 2026-12-22 00:45:00; nonstop; 130 minutes. Local airport times.

2026-12-21 · one way · $175.50

  • Alaska Airlines AS1410 / AS3217: SFO 2026-12-21 07:40:00 → SEA 2026-12-21 12:09:00; 1 stop(s) via PDX; 269 minutes. Local airport times.
    • AS1410: SFO 2026-12-21 07:40:00 → PDX 2026-12-21 09:27:00; layover at PDX: 87 minutes.
    • AS3217: PDX 2026-12-21 10:54:00 → SEA 2026-12-21 12:09:00.

2026-12-21 · one way · $201.50

  • United Airlines UA2259 / AC8804: SFO 2026-12-21 08:31:00 → SEA 2026-12-21 14:32:00; 1 stop(s) via YVR; 361 minutes. Local airport times.
    • UA2259: SFO 2026-12-21 08:31:00 → YVR 2026-12-21 12:00:00; layover at YVR: 150 minutes.
    • AC8804: YVR 2026-12-21 14:30:00 → SEA 2026-12-21 14:32:00.

2026-12-21 · one way · $201.50

  • United Airlines UA2127 / UA726: SFO 2026-12-21 05:50:00 → SEA 2026-12-21 11:26:00; 1 stop(s) via LAX; 336 minutes. Local airport times.
    • UA2127: SFO 2026-12-21 05:50:00 → LAX 2026-12-21 07:22:00; layover at LAX: 65 minutes.
    • UA726: LAX 2026-12-21 08:27:00 → SEA 2026-12-21 11:26:00.

More dates for this route