Best Flights starting from $121
from$121economy
Toronto (YYZ)
Wed, May 27
Roundtrip
Seattle (SEA)
Tue, Jun 2
from$237economy
Toronto (YYZ)
Thu, May 28
Roundtrip
Seattle (SEA)
Tue, Jun 2
from$239economy
Toronto (YYZ)
Fri, May 29
Roundtrip
Seattle (SEA)
Sat, Jun 6
from$241economy
Toronto (YYZ)
Tue, May 12
Roundtrip
Seattle (SEA)
Sat, May 16
from$241economy
Toronto (YYZ)
Wed, May 27
Roundtrip
Seattle (SEA)
Thu, Jun 4
from$241economy
Toronto (YYZ)
Thu, May 28
Roundtrip
Seattle (SEA)
Fri, Jun 5
from$247economy
Toronto (YYZ)
Wed, May 13
Roundtrip
Seattle (SEA)
Sun, May 17
from$247economy
Toronto (YYZ)
Tue, May 26
Roundtrip
Seattle (SEA)
Wed, Jun 3
from$247economy
Toronto (YYZ)
Sat, May 30
Roundtrip
Seattle (SEA)
Sun, Jun 7
from$249economy
Toronto (YYZ)
Sat, May 2
Roundtrip
Seattle (SEA)
Sat, May 9
from$252economy
Toronto (YYZ)
Tue, May 5
Roundtrip
Seattle (SEA)
Tue, May 12
from$252economy
Toronto (YYZ)
Wed, May 6
Roundtrip
Seattle (SEA)
Wed, May 13
from$252economy
Toronto (YYZ)
Sat, May 9
Roundtrip
Seattle (SEA)
Sat, May 16
from$252economy
Toronto (YYZ)
Sat, May 16
Roundtrip
Seattle (SEA)
Wed, May 20
from$252economy
Toronto (YYZ)
Sun, May 31
Roundtrip
Seattle (SEA)
Mon, Jun 8
from$253economy
Toronto (YYZ)
Thu, May 14
Roundtrip
Seattle (SEA)
Mon, May 18
from$254economy
Toronto (YYZ)
Sat, May 2
Roundtrip
Seattle (SEA)
Wed, May 6
from$273economy
Toronto (YYZ)
Mon, May 11
Roundtrip
Seattle (SEA)
Fri, May 15
from$276economy
Toronto (YYZ)
Mon, May 4
Roundtrip
Seattle (SEA)
Mon, May 11
from$276economy
Toronto (YYZ)
Thu, May 7
Roundtrip
Seattle (SEA)
Thu, May 14
from$276economy
Toronto (YYZ)
Fri, May 8
Roundtrip
Seattle (SEA)
Fri, May 15
from$281economy
Toronto (YYZ)
Sun, May 3
Roundtrip
Seattle (SEA)
Sun, May 10
from$284economy
Toronto (YYZ)
Fri, May 15
Roundtrip
Seattle (SEA)
Tue, May 19
from$285economy
Toronto (YYZ)
Tue, May 12
Roundtrip
Seattle (SEA)
Tue, May 19
from$306economy
Toronto (YYZ)
Sun, May 17
Roundtrip
Seattle (SEA)
Thu, May 21
from$314economy
Toronto (YYZ)
Sat, May 16
Roundtrip
Seattle (SEA)
Sun, Jul 26
from$538economy
Toronto (YYZ)
Wed, May 13
Roundtrip
Seattle (SEA)
Thu, Jul 23
from$539economy
Toronto (YYZ)
Sun, May 17
Roundtrip
Seattle (SEA)
Mon, Jul 27
from$539economy
Toronto (YYZ)
Mon, May 18
Roundtrip
Seattle (SEA)
Tue, Jul 28
from$599economy
Toronto (YYZ)
Fri, May 15
Roundtrip
Seattle (SEA)
Sat, Jul 25
Fields updated — click View Prices to search ↑
Other Options for This Route
Other Destinations
Toronto (YYZ) to Winnipeg (YWG) in May from $63
From $63
Toronto (YYZ) to Edmonton (YEG) in May from $100
From $100
Toronto (YYZ) to Vancouver (YVR) in May from $101
From $101
Toronto (YYZ) to Halifax (YHZ) in May from $134
From $134
Toronto (YYZ) to Halifax (YHZ) in May from $135
From $135
Toronto (YYZ) to Cancun (CUN) in May from $139
From $139
Flights from Other Cities
Dallas (DFW) to Seattle (SEA) in May from $80
From $80
Denver (DEN) to Seattle (SEA) in May from $81
From $81
Denver (DEN) to Seattle (SEA) in May from $88
From $88
St Louis (STL) to Seattle (SEA) in May from $106
From $106
Salt Lake City (SLC) to Seattle (SEA) in May from $111
From $111
Vancouver (YVR) to Seattle (SEA) in May from $118
From $118
✈️ Flight Guide: Toronto (YYZ) → Seattle (SEA)
Complete travel information for your May journey
May is a strong month for travel from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA). Spring weather improves reliability compared with winter and shoulder-season fares often make May an attractive time to visit Seattle for outdoor activities and festivals. Expect nonstop options on Air Canada and WestJet, and competitive connecting itineraries via Vancouver (YVR) or Calgary (YYC). Book 3–8 weeks in advance for the best fares; choose midweek departures to save. Pack layers for Seattle’s variable spring weather and confirm ground transfer plans from SEA to downtown Seattle, Bellevue, or Tacoma. Ready to book? Search cheap flights YYZ to SEA now and lock in May availability.
Departing from Toronto (YYZ) FAQs
Yes — several carriers operate nonstop flights between Toronto Pearson International Airport (YYZ) and Seattle-Tacoma International Airport (SEA) during May, especially on peak travel days. Direct service is commonly offered by Air Canada and WestJet on seasonal or year-round schedules; however, availability can vary by day of week, so check Google Flights or the airlines' schedules and book early for the best fares. For flexible travel, compare nonstop and one-stop options to find the best departure times.
Nonstop flights from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA) typically take about 5 to 5.5 hours. Flight time can vary with wind conditions and routing; one-stop itineraries via Calgary (YYC), Vancouver (YVR), Chicago (ORD), or Detroit (DTW) add connection time. Check live schedules and expected flight durations on FlightAware or airline timetables before you travel.
In May, economy fares Toronto Pearson International Airport (YYZ) → Seattle-Tacoma International Airport (SEA) commonly range from CAD 350–650 round-trip when booked 4–8 weeks ahead. Prices dip on midweek departures and during shoulder-season sales; use fare trackers and set alerts on Google Flights or Skyscanner to catch flash sales. For the best deals, book early, be flexible with dates, and consider connecting flights through Vancouver or Calgary.
Toronto Pearson International Airport (YYZ) is served by UP Express rail to downtown Toronto, airport shuttles, rideshares (Uber/Lyft), taxis, and major car rental companies. Allow extra time for GO Transit or highway traffic if you’re coming from Mississauga, Markham, or Ottawa connections. For international departures to Seattle, arrive at least 2–3 hours before your scheduled departure to clear security and any airline check-in formalities.
May is generally a smooth travel month at Toronto Pearson International Airport (YYZ) — spring weather reduces winter delays but expect occasional rain and construction-related traffic near airport access roads. Peak holiday weekends and long weekends (Victoria Day in late May) can increase terminal and security wait times, so consider early check-in or UP Express for predictable travel time. Keep an eye on airline and GTAA alerts for gate or time changes.
Travelers flying from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA) often originate from or connect through nearby major cities such as downtown Toronto, Mississauga, Markham, Ottawa, Montreal, New York City, and Vancouver. These urban centers offer frequent feeder flights and rail options, making it easy to consolidate itineraries. If you need multi-city routing, compare fares from nearby airports to maximize savings.
May arrivals to Seattle-Tacoma International Airport (SEA) from Toronto Pearson International Airport (YYZ) benefit from pleasant spring weather and a lively events calendar. Use the Link light rail for a fast, cost-effective ride to downtown Seattle; rides to Bellevue and Tacoma are simple with shuttle or rental car options. Expect moderate passenger volumes — festival weekends can cause localized congestion at baggage claim and rideshare pickup zones. If you’re planning day trips to Olympic National Park, Mount Rainier, or Vancouver, BC, allow extra transfer time and check ferry schedules. For the best experience, pre-book airport transfers and consider Global Entry or Mobile Passport Control to speed arrival processing.
Arriving at Seattle (SEA) FAQs
The Link light rail offers a convenient and affordable connection from Seattle-Tacoma International Airport (SEA) to downtown Seattle year-round, and is especially reliable in May when roads are clear of winter weather. Rideshares, taxis, and private shuttles are also available outside the station; plan for a 30–45 minute transfer depending on traffic. For visits to Bellevue or Tacoma, consider Sound Transit buses or rental cars.
May in Seattle is typically mild with daytime highs around 15–20°C (60–68°F) and periodic light showers. It's one of the driest spring months, offering good conditions for outdoor sightseeing such as Pike Place Market, waterfront walks, or nearby hikes to Mount Rainier. Pack a light waterproof jacket and layers for cool mornings and evenings.
Yes — May hosts events like the Seattle International Film Festival (SIFF) and regional cultural festivals which can increase hotel demand and weekend air traffic into Seattle-Tacoma International Airport (SEA). Expect higher fares and busier terminals on festival weekends; book accommodation and airport transfers early. Check event calendars when planning May travel to coordinate schedules.
Seattle-Tacoma International Airport (SEA) provides direct connections to nearby cities such as downtown Seattle, Bellevue, Tacoma, Everett, and Vancouver, BC via car, shuttle, and regional rail/bus. For excursions to Portland or Spokane, consider connecting flights or Amtrak/bus+car options. If planning onward travel from SEA in May, verify schedules for ferries and regional transit, and allow buffer time for spring weekend traffic.
International travelers arriving at Seattle-Tacoma International Airport (SEA) in May should be prepared for U.S. Customs and Border Protection processing; have passports and documentation ready and expect variable wait times depending on flight volume. Enroll in Mobile Passport Control or Global Entry if eligible to expedite processing. Also, check baggage claim and ground transport options in advance to minimize time in the terminal.
Air Canada, WestJet, and several U.S. carriers operate YYZ to SEA routes; arrivals land at Seattle-Tacoma International Airport (SEA) with full ground services including rental cars, baggage facilities, shops, and light rail access. If you need onward transit to Olympic National Park or Mount Rainier, plan for an immediate rental-car pickup or prearranged shuttle. Verify arrival terminals and baggage policies with your carrier to streamline your May trip.
1.0.2604.15
Seattle Events & Festivals in May — Plan Your YYZ to SEA Trip Around Local Happenings
May in Seattle features cultural events that draw visitors and can impact flights and lodging. Notable events often include the Seattle International Film Festival (SIFF), Northwest Folklife Festival (timing varies, often late May), and numerous neighborhood art walks and food festivals. These events drive demand for flights to Seattle-Tacoma International Airport (SEA), so secure your YYZ → SEA flights and hotels early. Outdoor activities like cherry blossom viewing, patio season, and early hiking are additional attractions in May.
Best Time to Fly — YYZ to SEA (May Travel Recommendations)
May is a favorable month to fly from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA): spring weather lowers winter delays and outdoor activities are available. For lower fares, choose midweek departures (Tuesday–Thursday) and avoid Victoria Day weekend when Canadian travel spikes. Early May weekdays can offer the best balance of price and pleasant weather in Seattle. If you prefer smaller crowds and cheaper hotels, target early- to mid-May rather than late-May festival weekends.
Direct vs Connecting Flights — Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA)
Choosing direct or connecting flights between Toronto Pearson International Airport (YYZ) and Seattle-Tacoma International Airport (SEA) depends on your priorities. Nonstop flights (about 5–5.5 hours) save time and reduce the risk of missed connections, but can be pricier during high-demand May weekends. Connecting flights via Vancouver (YVR), Calgary (YYC), Chicago (ORD), or Detroit (DTW) often lower costs and increase schedule options, though they add travel time and potential layover uncertainty. For flexibility and savings, consider a one-stop itinerary if you have a longer travel window.
Airline Comparison for YYZ to SEA — Air Canada, WestJet, Alaska and More (May)
Major carriers serving the YYZ–SEA market include Air Canada and WestJet (nonstop/connecting) and U.S. carriers via one-stop routings. Air Canada offers direct service and premium cabin options with Aeroplan benefits; WestJet frequently competes on price and flexible fares. Alaska Airlines partners on transborder itineraries via code-share agreements and provides strong West Coast connectivity. When comparing airlines, evaluate total trip cost including checked-bag fees, seat selection, schedule convenience, and loyalty program perks. For May, watch for seasonal promotions from Air Canada and WestJet and factor in arrival times at Seattle-Tacoma International Airport (SEA).
Seasonal Travel Tips for YYZ to SEA in May — Packing, Weather, and Day Trips
Travelers flying from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA) in May should prepare for mild, changeable weather and active outdoor event calendars. Layer clothing, bring a compact rain jacket, and pack comfortable walking shoes for urban exploration and light hiking. Earbuds, a universal adapter, and a small daypack are useful for city transit and short excursions. Consider day trips to Mount Rainier, Olympic National Park, or Whidbey Island — reserve transportation and guided tours in advance, especially on sunny weekends.
Flight Time & Schedules — Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA) in May
Nonstop flights from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA) typically range from 5:00 to 5:30 hours. Frequency increases seasonally; in May expect daily nonstop options on major carriers and additional connecting flights via hubs such as Vancouver (YVR), Calgary (YYC), Chicago (ORD), or Detroit (DTW). Early morning and late evening flights can reduce delay risk, while mid-afternoon flights offer better connection opportunities. Check airline timetables and FlightAware for real-time schedule changes.
How to Find Cheap Flights from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA) in May
To find cheap flights between Toronto Pearson International Airport (YYZ) and Seattle-Tacoma International Airport (SEA) in May, use fare-comparison tools (Google Flights, Skyscanner, Momondo) and set price alerts. Midweek departures (Tuesday–Thursday) and red-eye/early-morning flights often yield lower fares. Consider one-stop itineraries via Vancouver (YVR) or Calgary (YYC) to shave costs, and be flexible by ±3 days around your ideal travel window. Subscribe to airline newsletters from Air Canada and WestJet for flash sales and check partner carrier pricing for cross-border savings.