Ontario to Seattle

1 ways to travelfastest 3h 02mfly from €95
Photo: Robert Ritchie / Unsplash

When is it cheapest to fly?

Oct: from €125 — show this month's calendar €125 OctNov: from €77 — show this month's calendar €77 Nov

How the cheapest fare moved

Oct 30: €103 €103 Oct 26 Oct 30 low €95 · high €161

Departure-day prices · October 2026 Ontario → Seattle

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Return-day prices · October 2026 Seattle → Ontario

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Best time to visit Seattle — climate

Jan: ~7°C daytime, 9 rainy days 7° JanFeb: ~8°C daytime, 15 rainy days 8° FebMar: ~12°C daytime, 20 rainy days 12° MarApr: ~15°C daytime, 11 rainy days 15° AprMay: ~18°C daytime, 11 rainy days 18° MayJun: ~22°C daytime, 3 rainy days 22° JunJul: ~26°C daytime, 1 rainy days 26° JulAug: ~25°C daytime, 5 rainy days 25° AugSep: ~22°C daytime, 5 rainy days 22° SepOct: ~15°C daytime, 16 rainy days 15° OctNov: ~12°C daytime, 16 rainy days 12° NovDec: ~10°C daytime, 19 rainy days 10° Dec

Flights from Ontario to Seattle start around €95 (typically 1 stop). Range seen recently: €95–161, based on 6 fares found by travellers.

Fly (from €95)
3h 02mduration
€95–161recent fares
Book
Cheapest cached fares Ontario → Seattle; typically 1 stop (e.g. F9). · Based on 6 fares found by travellers in the last 48h

Cheapest round trips to Seattle

Fares found by travellers in the last 48 hours — refreshed daily.

Nov 24 – Nov 30 Frontier Airlines · 1 stop · 4h 06m €158 Book
Nov 14 – Nov 16 Frontier Airlines · 1 stop · 5h 29m €162 Book
Dec 1 – Dec 8 Alaska Airlines · Direct · 2h 57m €173 Book
Dec 27 – Dec 28 Southwest Airlines · Direct · 4h 15m €227 Book
Dec 21 – Dec 27 Southwest Airlines · Direct · 4h 15m €228 Book
Nov 13 – Nov 16 Frontier Airlines · 1 stop · 5h 29m €229 Book
Dec 19 – Dec 27 Alaska Airlines · Direct · 2h 50m €230 Book
Dec 18 – Dec 27 Southwest Airlines · Direct · 4h 15m €231 Book

Weather in Seattle

Fri 🌦️ 10° 5° 💧75%
Sat ☁️ 11° 4° 💧0%
Sun ☁️ 12° 5° 💧1%
Mon ☁️ 11° 5° 💧5%
Tue ☁️ 14° 7° 💧5%
Wed ☁️ 15° 5° 💧10%
Thu 🌦️ 11° 8° 💧28%

In Oct, Seattle typically sees ~15°C daytime highs and 16 rainy days.

Where to stay in Seattle

3★+ hotels from €24/night (40 hotels sampled, ~3 weeks out).

Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA hotel · Seattle
from €24/night★ 4
See availability
Hotel Max hotel · Seattle
from €83/night★ 3
See availability
Hampton Inn and Suites Seattle - Airport / 28th Avenue hotel · Seattle
from €92/night★ 3
See availability

Good to know

Time differenceSame time zone
Time in the air2h 50m

Things to do in Seattle

Top-rated tours and tickets from €37 — book ahead for the popular ones.

from €37
Seattle Coffee Walking Tour Specialty Cafes and Local Stories★ 5.0 (77)
from €547
Seattle City Tour 3-Hours (Private Tour)★ 5.0 (52)
from €114
Mid-Day & Sunset Sailing on Seattle's Majestic Puget Sound★ 5.0 (36)
from €59
Food Tasting & Arts Tour of Pike Place Market★ 5.0 (32)
from €301
Waterfall Rappelling Canyoneering Adventure + Photo Package!★ 5.0 (29)
from €143
Private Seattle Cocktail Tour★ 5.0 (25)

Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.

About Seattle

Seattle, Washington sits at one of the most beautiful spots in the United States. Occupying a narrow isthmus between the Puget Sound and Lake Washington, it is the biggest city in the Pacific Northwest, with 780,000 people in Seattle and over four million people in the metro area. Seen from above, carpets of evergreen trees, pristine blue waters, and snowy white mountains surround the downtown's metallic skyscrapers, earning the city its nickname The Emerald City. On the ground, you will find a vibrant and cosmopolitan city.

Read the full Seattle guide

Guide content from Wikivoyage contributors (CC BY-SA).

Round out the trip

eSIM for SeattleData from the moment you land — no roaming bills. Rent a car in SeattleCompare local and international rental desks. Airport transferFixed-price pickup waiting at arrivals. Travel insuranceMedical + luggage cover from a few €/day.

Popular from Ontario

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Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-10-30. Some links earn Stayonomy a commission at no cost to you.