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Route overview: San Francisco Bay Area to Seattle (SEA) flight deals

San Francisco → Seattle

Dec 8, 2026 · return Dec 13, 2026

SFO → SEA1 adulteconomyRound trip

12 flight options · 5 airlines

Nonstop flights

Tue, Dec 8 – Sun, Dec 13

Alaska Airlines
9:40 amSFO
2h 17m
Nonstop
11:57 amSEA
Alaska Airlines
11:50 amSEA
2h 22m
Nonstop
2:12 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

Delta Air Lines
6:00 amSFO
2h 18m
Nonstop
8:18 amSEA
Delta Air Lines
11:00 amSEA
2h 24m
Nonstop
1:24 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

United Airlines
10:05 amSFO
2h 13m
Nonstop
12:18 pmSEA
United Airlines
9:01 amSEA
2h 17m
Nonstop
11:18 amSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

Alaska Airlines
12:39 pmSFO
2h 16m
Nonstop
2:55 pmSEA
Alaska Airlines
11:50 amSEA
2h 22m
Nonstop
2:12 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

Delta Air Lines
2:19 pmSFO
2h 25m
Nonstop
4:44 pmSEA
Delta Air Lines
11:00 amSEA
2h 24m
Nonstop
1:24 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

United Airlines
12:05 pmSFO
2h 18m
Nonstop
2:23 pmSEA
United Airlines
9:01 amSEA
2h 17m
Nonstop
11:18 amSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Tue, Dec 8 – Sun, Dec 13

American Airlines
7:00 amSFO
6h
LAX · 1h 17m
1:00 pmSEA
American Airlines
4:40 pmSEA
6h 37m
LAX · 1h 59m
11:17 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

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

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

Alaska Airlines
7:40 amSFO
4h 29m
PDX · 1h 27m
12:09 pmSEA
Alaska Airlines
11:50 amSEA
2h 22m
Nonstop
2:12 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

Alaska Airlines
1:39 pmSFO
7h 51m
PSP · 3h 15m
9:30 pmSEA
Alaska Airlines
11:50 amSEA
2h 22m
Nonstop
2:12 pmSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

United Airlines
5:50 amSFO
5h 36m
LAX · 1h 5m
11:26 amSEA
United Airlines
9:01 amSEA
2h 17m
Nonstop
11:18 amSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Dec 8 – Sun, Dec 13

United Airlines
8:31 amSFO
6h 1m
YVR · 2h 30m
2:32 pmSEA
United Airlines
9:01 amSEA
2h 17m
Nonstop
11:18 amSFO

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

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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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.
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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 7, 2026 · Return optionsDec 9, 2026 · Return optionsHotels in Seattle 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.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-08 → 2026-12-13Alaska AirlinesAS1327 / AS655Axel-exclusive $220.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13Delta Air LinesDL2721 / DL1412Axel-exclusive $230.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13United AirlinesUA2192 / UA1372Axel-exclusive $240.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13American AirlinesAA2211 + AA4997 / AA4945 + AA6260Axel-exclusive $320.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13Air CanadaAC567 + AC8810 / AC8807 + UA1083Axel-exclusive $410.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13Alaska AirlinesAS264 / AS655Axel-exclusive $220.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13Delta Air LinesDL1412 / DL1412Axel-exclusive $230.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13United AirlinesUA1264 / UA1372Axel-exclusive $240.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13Alaska AirlinesAS1410 + AS3217 / AS655Axel-exclusive $240.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13Alaska AirlinesAS3124 + AS295 / AS655Axel-exclusive $240.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13United AirlinesUA2127 + UA726 / UA1372Axel-exclusive $270.002026-10-29T01:19:49Z
2026-12-08 → 2026-12-13United AirlinesUA2259 + AC8804 / UA1372Axel-exclusive $270.002026-10-29T01:19:49Z

Route overview: San Francisco Bay Area to Seattle (SEA) flight deals

2026-12-08 → 2026-12-13 · Axel-exclusive $220.00

  • Alaska Airlines AS1327: SFO 2026-12-08 09:40:00 → SEA 2026-12-08 11:57:00; nonstop; 137 minutes. Local airport times.
  • Alaska Airlines AS655: SEA 2026-12-13 11:50:00 → SFO 2026-12-13 14:12:00; nonstop; 142 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $230.00

  • Delta Air Lines DL2721: SFO 2026-12-08 06:00:00 → SEA 2026-12-08 08:18:00; nonstop; 138 minutes. Local airport times.
  • Delta Air Lines DL1412: SEA 2026-12-13 11:00:00 → SFO 2026-12-13 13:24:00; nonstop; 144 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $240.00

  • United Airlines UA2192: SFO 2026-12-08 10:05:00 → SEA 2026-12-08 12:18:00; nonstop; 133 minutes. Local airport times.
  • United Airlines UA1372: SEA 2026-12-13 09:01:00 → SFO 2026-12-13 11:18:00; nonstop; 137 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $320.00

  • American Airlines AA2211 / AA4997: SFO 2026-12-08 07:00:00 → SEA 2026-12-08 13:00:00; 1 stop(s) via LAX; 360 minutes. Local airport times.
    • AA2211: SFO 2026-12-08 07:00:00 → LAX 2026-12-08 08:37:00; layover at LAX: 77 minutes.
    • AA4997: LAX 2026-12-08 09:54:00 → SEA 2026-12-08 13:00:00.
  • American Airlines AA4945 / AA6260: SEA 2026-12-13 16:40:00 → SFO 2026-12-13 23:17:00; 1 stop(s) via LAX; 397 minutes. Local airport times.
    • AA4945: SEA 2026-12-13 16:40:00 → LAX 2026-12-13 19:36:00; layover at LAX: 119 minutes.
    • AA6260: LAX 2026-12-13 21:35:00 → SFO 2026-12-13 23:17:00.

2026-12-08 → 2026-12-13 · Axel-exclusive $410.00

  • Air Canada AC567 / AC8810: SFO 2026-12-08 14:45:00 → SEA 2026-12-08 21:57:00; 1 stop(s) via YVR; 432 minutes. Local airport times.
    • AC567: SFO 2026-12-08 14:45:00 → YVR 2026-12-08 18:05:00; layover at YVR: 225 minutes.
    • AC8810: YVR 2026-12-08 21:50:00 → SEA 2026-12-08 21:57:00.
  • Air Canada AC8807 / UA1083: SEA 2026-12-13 15:15:00 → SFO 2026-12-13 21:42:00; 1 stop(s) via YVR; 387 minutes. Local airport times.
    • AC8807: SEA 2026-12-13 15:15:00 → YVR 2026-12-13 17:26:00; layover at YVR: 169 minutes.
    • UA1083: YVR 2026-12-13 20:15:00 → SFO 2026-12-13 21:42:00.

2026-12-08 → 2026-12-13 · Axel-exclusive $220.00

  • Alaska Airlines AS264: SFO 2026-12-08 12:39:00 → SEA 2026-12-08 14:55:00; nonstop; 136 minutes. Local airport times.
  • Alaska Airlines AS655: SEA 2026-12-13 11:50:00 → SFO 2026-12-13 14:12:00; nonstop; 142 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $230.00

  • Delta Air Lines DL1412: SFO 2026-12-08 14:19:00 → SEA 2026-12-08 16:44:00; nonstop; 145 minutes. Local airport times.
  • Delta Air Lines DL1412: SEA 2026-12-13 11:00:00 → SFO 2026-12-13 13:24:00; nonstop; 144 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $240.00

  • United Airlines UA1264: SFO 2026-12-08 12:05:00 → SEA 2026-12-08 14:23:00; nonstop; 138 minutes. Local airport times.
  • United Airlines UA1372: SEA 2026-12-13 09:01:00 → SFO 2026-12-13 11:18:00; nonstop; 137 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $240.00

  • Alaska Airlines AS1410 / AS3217: SFO 2026-12-08 07:40:00 → SEA 2026-12-08 12:09:00; 1 stop(s) via PDX; 269 minutes. Local airport times.
    • AS1410: SFO 2026-12-08 07:40:00 → PDX 2026-12-08 09:27:00; layover at PDX: 87 minutes.
    • AS3217: PDX 2026-12-08 10:54:00 → SEA 2026-12-08 12:09:00.
  • Alaska Airlines AS655: SEA 2026-12-13 11:50:00 → SFO 2026-12-13 14:12:00; nonstop; 142 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $240.00

  • Alaska Airlines AS3124 / AS295: SFO 2026-12-08 13:39:00 → SEA 2026-12-08 21:30:00; 1 stop(s) via PSP; 471 minutes. Local airport times.
    • AS3124: SFO 2026-12-08 13:39:00 → PSP 2026-12-08 15:17:00; layover at PSP: 195 minutes.
    • AS295: PSP 2026-12-08 18:32:00 → SEA 2026-12-08 21:30:00.
  • Alaska Airlines AS655: SEA 2026-12-13 11:50:00 → SFO 2026-12-13 14:12:00; nonstop; 142 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $270.00

  • United Airlines UA2127 / UA726: SFO 2026-12-08 05:50:00 → SEA 2026-12-08 11:26:00; 1 stop(s) via LAX; 336 minutes. Local airport times.
    • UA2127: SFO 2026-12-08 05:50:00 → LAX 2026-12-08 07:22:00; layover at LAX: 65 minutes.
    • UA726: LAX 2026-12-08 08:27:00 → SEA 2026-12-08 11:26:00.
  • United Airlines UA1372: SEA 2026-12-13 09:01:00 → SFO 2026-12-13 11:18:00; nonstop; 137 minutes. Local airport times.

2026-12-08 → 2026-12-13 · Axel-exclusive $270.00

  • United Airlines UA2259 / AC8804: SFO 2026-12-08 08:31:00 → SEA 2026-12-08 14:32:00; 1 stop(s) via YVR; 361 minutes. Local airport times.
    • UA2259: SFO 2026-12-08 08:31:00 → YVR 2026-12-08 12:00:00; layover at YVR: 150 minutes.
    • AC8804: YVR 2026-12-08 14:30:00 → SEA 2026-12-08 14:32:00.
  • United Airlines UA1372: SEA 2026-12-13 09:01:00 → SFO 2026-12-13 11:18:00; nonstop; 137 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: San Francisco (SFO) to Seattle (SEA) · Dec 8, 2026 · return Dec 13, 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 San Francisco Bay Area to Seattle (SEA) 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.