Best Flights starting from $137
from$137economy
Boise (BOI)
Tue, May 26
Roundtrip
Seattle (SEA)
Mon, Jun 1
from$137economy
Boise (BOI)
Tue, May 26
Roundtrip
Seattle (SEA)
Tue, Jun 2
from$137economy
Boise (BOI)
Wed, May 27
Roundtrip
Seattle (SEA)
Sat, May 30
from$147economy
Boise (BOI)
Wed, May 27
Roundtrip
Seattle (SEA)
Tue, Jun 2
from$177economy
Boise (BOI)
Tue, May 12
Roundtrip
Seattle (SEA)
Sat, May 16
from$177economy
Boise (BOI)
Wed, May 13
Roundtrip
Seattle (SEA)
Sat, May 16
from$177economy
Boise (BOI)
Sat, May 16
Roundtrip
Seattle (SEA)
Tue, May 19
from$177economy
Boise (BOI)
Sat, May 16
Roundtrip
Seattle (SEA)
Sat, May 23
from$177economy
Boise (BOI)
Tue, May 19
Roundtrip
Seattle (SEA)
Sat, May 23
from$177economy
Boise (BOI)
Tue, May 19
Roundtrip
Seattle (SEA)
Tue, May 26
from$177economy
Boise (BOI)
Wed, May 20
Roundtrip
Seattle (SEA)
Sat, May 23
from$177economy
Boise (BOI)
Wed, May 20
Roundtrip
Seattle (SEA)
Tue, May 26
from$177economy
Boise (BOI)
Tue, May 26
Roundtrip
Seattle (SEA)
Sat, May 30
from$177economy
Boise (BOI)
Sat, May 30
Roundtrip
Seattle (SEA)
Tue, Jun 2
from$177economy
Boise (BOI)
Sat, May 30
Roundtrip
Seattle (SEA)
Wed, Jun 3
from$177economy
Boise (BOI)
Sat, May 30
Roundtrip
Seattle (SEA)
Sat, Jun 6
from$185economy
Boise (BOI)
Sun, May 10
Roundtrip
Seattle (SEA)
Tue, May 19
from$187economy
Boise (BOI)
Wed, May 27
Roundtrip
Seattle (SEA)
Mon, Jun 1
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Other Options for This Route
Other Destinations
Boise (BOI) to Las Vegas (LAS) in May from $137
From $137
Boise (BOI) to San Diego (SAN) in May from $155
From $155
Boise (BOI) to Las Vegas (Any) in May from $160
From $160
Boise (BOI) to San Francisco (SFO) in May from $180
From $180
Boise (BOI) to Denver (Any) in May from $203
From $203
Boise (BOI) to Santa Ana (SNA) in May from $203
From $203
Flights from Other Cities
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
Los Angeles (LAX) to Seattle (SEA) in May from $111
From $111
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: Boise (BOI) → Seattle (SEA)
Complete travel information for your May journey
Departing from Boise (BOI) FAQs
To find the cheapest economy flights from Seattle–Tacoma International Airport (SEA), compare low-cost carriers like Southwest and legacy carriers' basic economy fares across meta-search engines (Google Flights, Skyscanner). Search 6–8 weeks in advance for domestic trips and 2–4 months for international travel, set fare alerts, and be flexible on travel dates and nearby departure times to score lower fares. Use search phrases such as "cheap flights from SEA to [destination] economy" for best results.
Seattle–Tacoma International Airport (SEA) is served by Link Light Rail, express buses, ride-shares, taxis, and on-site parking. For economy travelers, Link Light Rail provides the most cost-effective route to downtown Seattle and nearby cities like Tacoma and Bellevue, while shared shuttles reduce cost for groups. Plan for 30–60 minutes from downtown depending on time of day.
Yes — airlines frequently run summer promotions (June–August) from Seattle–Tacoma International Airport (SEA) to leisure destinations such as Los Angeles, Las Vegas, and coastal resort cities. Watch for July flash sales and use mid-week travel to maximize savings. Sign up for airline newsletters and follow fare-tracking sites to catch limited-time economy fare deals.
Seattle–Tacoma International Airport (SEA) serves greater Seattle as well as Tacoma, Bellevue, Everett and nearby destinations such as Bellingham and Lake Chelan via connecting transport. It’s a primary gateway to the Pacific Northwest and offers connections to major hubs like San Francisco, Los Angeles, New York, Vancouver, and international gateways in Tokyo and London. Use community shuttles and regional flights for last-leg access to remote destinations.
Weekdays, particularly Tuesdays and Wednesdays, often have lower economy fares out of Seattle–Tacoma International Airport (SEA), while peak travel days (Fridays, Sundays) are pricier. Seasonally, January–March and late September–November can yield cheaper fare windows for off-peak travel, whereas summer months and holiday periods are more expensive. Use flexible date searches to reveal the cheapest days to fly.
For domestic economy flights from Seattle–Tacoma International Airport (SEA), arrive at least 90 minutes before departure; for international economy flights, allow at least 2.5–3 hours to account for security and passport control. During peak summer months (June–August) and holiday travel (December), build in extra time for longer security lines and increased passenger volume.
Arriving at Seattle (SEA) FAQs
When arriving on the cheapest economy fares, expect basic amenities and stricter carry-on or checked baggage limits depending on the airline's basic economy rules. Seats may be non-refundable, have limited seat selection, and include fewer changes or upgrades. Plan for longer boarding and deplaning times and verify baggage allowance before arrival to avoid unexpected fees.
For arrivals on the cheapest economy fares, allow generous connection time—especially if transferring between different airlines or terminals—because basic economy often means you board later and deplane later. If booking separate tickets, add extra buffer time and consider purchasing travel insurance for missed connections.
Arrival ease varies seasonally: summer months (June–August) and December holidays are busier and may result in longer immigration and baggage wait times, while January, February, and late September offer lighter crowds and quicker arrivals. Use off-peak months for smoother arrivals and potentially faster ground transfers.
After arriving on a cheapest economy ticket, plan onward travel to major nearby cities—depending on your arrival airport—via regional trains, buses, ride-shares, or budget intercity flights. Common major destinations often accessed from typical arrival hubs include New York, Los Angeles, Orlando, Cancun, London, and nearby regional centers depending on the airport.
Upgrades from the cheapest economy fares depend on the airline; some allow paid upgrades or bid-for-upgrade programs, while others restrict upgrades on basic economy tickets. Check your booking conditions and consider airline loyalty or paid upgrade offers before departure or during online check-in.
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Events & Festivals — How They Impact Economy Fares at SEA
Major Seattle events—Seafair (July), Bumbershoot (September), Emerald City Comic Con (March), and major sports playoffs—drive up demand and economy fares at Seattle–Tacoma International Airport (SEA). Similarly, international festivals (e.g., London Fashion Week, Munich Oktoberfest) can spike arrival prices on economy routes. To minimize costs, avoid peak event weekends, book months in advance, or target surrounding weekdays. Use event-centered search queries like "cheap flights SEA during Seafair" to anticipate price movement. CTA: Check event calendars and search early to find cheap economy fares.
Best Time to Fly — Cheap Economy From Seattle–Tacoma International Airport (SEA)
The best time to fly from Seattle–Tacoma International Airport (SEA) for cheap economy fares is midweek (Tuesday–Thursday) and during shoulder seasons (late January–March and September–November). Booking windows vary: domestic trips often show lowest fares 1–2 months ahead, while international economy fares are cheapest 2–4 months prior. Use price-tracking tools and flexible date searches for optimal savings. LSI keywords: "off-peak Seattle travel," "midweek cheap flights," and "shoulder season airfare." CTA: Search flexible dates now to find the best time to fly economy from SEA.
Direct vs Connecting Flights — Economy Choices from SEA
Connecting flights from Seattle–Tacoma International Airport (SEA) usually offer cheaper economy fares than nonstop flights but add travel time and risk for missed connections. Nonstop flights are faster and more convenient for short trips but typically cost more. For the cheapest economy options, search for one-stop itineraries, consider long layovers that reduce price, and ensure adequate connection times—especially when switching carriers. Use terms like "SEA nonstop economy" and "cheap connecting flights from Seattle" to optimize searches. CTA: Compare nonstop and connecting economy options to balance price and travel time.
Airline Comparison — Economy Fares from Seattle–Tacoma International Airport (SEA)
Alaska Airlines: strong West Coast network, competitive economy fares, good loyalty perks for frequent flyers. Delta Air Lines: wide domestic and international network with occasional basic-economy bargains. Southwest Airlines: often best for true low-cost economy itineraries and two free checked bags on standard fares (not basic). United and American offer expansive domestic and connecting international routes with frequent sales. Compare primary keywords like "Alaska cheap economy SEA," "Southwest basic economy Seattle," and LSI terms such as "budget carrier Seattle SEA" when shopping. CTA: Compare airlines now to find the best cheap economy option from Seattle–Tacoma International Airport (SEA).
Seasonal Travel Tips — Save on Economy Flights from SEA
Summer: Book early, target red-eye flights, and consider alternative airports to save on economy fares. Winter holidays: lock in fares several months ahead and be flexible with departure/return dates to avoid premium holiday pricing. Shoulder seasons (spring/fall): prioritize midweek travel for the best economy pricing and use price alerts for flash sales. LSI keywords: "seasonal airfare tips," "shoulder season savings," and "holiday flight planning." CTA: Apply these seasonal tips to your next search for cheap economy flights from Seattle–Tacoma International Airport (SEA).
Flight Times & Schedules — Seattle–Tacoma International Airport (SEA) to Economy (ECONOMY)
Flight durations from Seattle–Tacoma International Airport (SEA) vary by destination: West Coast U.S. cities (LAX, SFO) average 2–3 hours, East Coast hubs (JFK, BOS) 5–6 hours nonstop, and transatlantic flights (LHR) typically 9–10 hours. Economy schedules often include early-morning and late-night red-eye options that can be cheaper; however, basic economy restrictions may affect boarding priority. Seasonal schedule changes occur in summer and winter; check airline timetables and plan minimum connection times of at least 90–120 minutes for domestic and 2–3 hours for international connections when booking cheap economy itineraries.
Cheap Flights Guide — Seattle–Tacoma International Airport (SEA) to Economy (ECONOMY)
To find the cheapest economy flights from Seattle–Tacoma International Airport (SEA), use flexible date searches, set price alerts, and compare low-cost carriers against legacy airlines. Primary keyword targets include "cheap flights from SEA" and "SEA economy fares"; secondary keywords include "budget airfare Seattle" and "cheap Seattle flights." LSI variations: "low-cost flights from Seattle," "basic economy deals," and "discount airfare SEA." Try searching mid-week, use red-eye options, and bundle with hotels or car rentals to reduce total cost. CTA: Start a fare search now for the best economy deals from Seattle–Tacoma International Airport (SEA).