Best Flights starting from $157
from$157economy
Boise (BOI)
Tue, Apr 28
Roundtrip
Seattle (SEA)
Sat, May 2
from$157economy
Boise (BOI)
Wed, Apr 29
Roundtrip
Seattle (SEA)
Sat, May 2
Fields updated — click View Prices to search ↑
Other Destinations
Boise (BOI) to Denver (DEN) in April from $112
From $112
Boise (BOI) to Las Vegas (LAS) in April from $152
From $152
Boise (BOI) to Denver (Any) in April from $156
From $156
Boise (BOI) to Atlanta (ATL) in April from $189
From $189
Boise (BOI) to Chicago (ORD) in April from $192
From $192
Boise (BOI) to Denver (DEN) in April from $200
From $200
Flights from Other Cities
Las Vegas (LAS) to Seattle (SEA) in April from $28
From $28
Los Angeles (LAX) to Seattle (SEA) in April from $56
From $56
Dallas (DFW) to Seattle (SEA) in April from $80
From $80
Phoenix (Any) to Seattle (SEA) in April from $113
From $113
San Antonio (SAT) to Seattle (SEA) in April from $125
From $125
New York (JFK) to Seattle (SEA) in April from $138
From $138
✈️ Flight Guide: Boise (BOI) → Seattle (SEA)
Complete travel information for your April journey
Departing from Boise (BOI) FAQs
To find cheap flights from Seattle-Tacoma International Airport (SEA), compare fares across low-cost carriers, use flexible date search tools, and set fare alerts 4–8 weeks before domestic trips and 2–4 months for international routes. Booking mid-week, flying on Tuesdays or Wednesdays, and being flexible on nearby airports (e.g., Portland or Vancouver) often yields the lowest economy fares. Use search modifiers like "flexible dates" and "nearby airports" to unlock additional savings.
Baggage policies are set by each airline operating at Seattle-Tacoma International Airport (SEA), but most economy fares include one carry-on plus a personal item; checked baggage often incurs a fee on basic economy and low-cost tickets. Always check your airline’s baggage allowance before heading to the airport and consider pre-paying baggage online to save money and avoid gate fees.
For domestic flights from Seattle-Tacoma International Airport (SEA), arrive at least 90 minutes before departure; for international flights, allow 2.5 to 3 hours to account for check-in, security, and possible passport control. During peak travel months (December, July), add an extra 30–60 minutes for longer security lines at SEA.
Yes — January is often a low-demand month after the holidays, so Seattle-Tacoma International Airport (SEA) departures commonly feature discounted economy fares to domestic and short-haul international destinations. Monitor fare alerts, book mid-week, and consider redeye flights to find the cheapest options in January.
Seattle-Tacoma International Airport (SEA) is connected to downtown Seattle by Link light rail, airport shuttles, ride-hailing services, taxis, and car rental shuttles. The Link light rail provides a cost-effective, traffic-avoiding connection to major downtown hubs like Pioneer Square and Westlake, making it ideal for budget-conscious travelers.
Yes — airlines adjust routes and frequencies at Seattle-Tacoma International Airport (SEA) seasonally, adding more flights to popular summer destinations and holiday routes in December. Check airline schedules several weeks before travel and sign up for schedule-change alerts, especially if you’re booking connecting flights on a single itinerary.
Arriving at Seattle (SEA) FAQs
A cheapest economy fare (ECONOMY) usually includes a standard economy seat and carry-on or personal item depending on the airline, but may exclude checked baggage, seat selection, and changes. Always review the fare rules and compare the total landed cost (fare + baggage + seat fees) when booking from Seattle-Tacoma International Airport (SEA).
To secure the cheapest economy fares from Seattle-Tacoma International Airport (SEA) to major U.S. cities, use flexible-date search, subscribe to airline newsletters, and set price alerts for target routes like Los Angeles, San Francisco, Las Vegas, and Denver. Consider flying mid-week, taking red-eye flights, and comparing low-cost carriers to maximize savings.
June is typically high-demand, so finding the cheapest economy fares for June requires earlier booking (8–12 weeks), flexible departure days, and willingness to take connecting itineraries. Use fare alerts and monitor flash sales from Seattle-Tacoma International Airport (SEA) to capture short windows of discounted economy seats.
Popular international destinations that frequently offer cheap economy fares from Seattle-Tacoma International Airport (SEA) include Vancouver (Canada), London (UK) during shoulder seasons, Mexico City and Cancun (Mexico), and several Central American hubs. Off-peak months and mid-week departures improve chances of low economy fares.
Baggage fees and ancillaries like seat selection, priority boarding, and change fees can significantly raise the final cost of a cheapest economy fare (ECONOMY). Always calculate the total price including likely checked bag fees when comparing fares from Seattle-Tacoma International Airport (SEA) to ensure you’re truly booking the lowest-cost option.
Common strategies to upgrade cheaply include monitoring periodic upgrade offers from airlines, using miles or points, buying an upgrade during online check-in, or choosing a flexible standard economy that allows paid upgrades. Keep an eye on airline promotions from Seattle-Tacoma International Airport (SEA) carriers for discounted upgrade offers.
1.0.2604.08
Events & Festivals Affecting Fares at Seattle-Tacoma International Airport (SEA)
Major events that increase demand at Seattle-Tacoma International Airport (SEA) include the Seattle International Film Festival (May), Bumbershoot (September), Seafair (July), and holiday conventions in December. Large events in nearby cities like Portland, Vancouver (BC), and the Bay Area can also affect fares at SEA. If your travel dates coincide with these events, book earlier and consider alternate airports or mid-week travel to find cheaper economy fares. CTA: Check event calendars before locking in travel dates to avoid inflated ticket prices.
Best Time to Fly From Seattle for Cheap Economy Fares
The best time to fly from Seattle-Tacoma International Airport (SEA) for cheapest economy fares is typically during shoulder seasons (April–May, September–October) and in post-holiday January. Book domestic travel 4–8 weeks ahead and international 2–4 months ahead for economy seats. Fly mid-week (Tuesday/Wednesday) and on red-eyes when possible to access lower fares. CTA: Use a flexible-date calendar to pinpoint the cheapest travel days from SEA.
Direct vs Connecting Flights from Seattle: Choosing the Cheapest Economy Option
Direct flights from Seattle-Tacoma International Airport (SEA) provide convenience and lower disruption risk but are often pricier in economy. Connecting flights can result in significant savings—especially when combining low-cost carriers or flying through major hubs like Salt Lake City or Denver—but add transit time and potential missed-connection risk. For cheapest economy fares, compare the total landed cost including baggage and time value. CTA: If saving money is the priority, search multi-leg itineraries and compare layover length and transfer complexity.
Airline Comparison for Seattle Departures — Economy Fares & Ancillaries
Alaska Airlines dominates Seattle-Tacoma International Airport (SEA) with strong West Coast networks and competitive pricing for regional routes, while Delta, United, and American operate many domestic and international departures with frequent sales. Southwest often offers attractive economy fares with two free checked bags but limited codeshare international options. Compare total cost—including baggage and seat fees—rather than base fare alone to identify the true cheapest economy option. CTA: Use a comparison matrix to weigh fare vs ancillaries before booking from SEA.
Seasonal Travel Tips for Budget Flyers at Seattle-Tacoma International Airport (SEA)
Winter: For departures from Seattle-Tacoma International Airport (SEA) in winter months, allow extra time for weather delays and book refundable or flexible economy fares if traveling around holidays. Spring: Take advantage of shoulder-season discounts in April and May by booking mid-week and comparing nearby airports. Summer: Expect peak pricing June–August; book as early as possible and consider early-morning or late-night flights to save. Fall: September and October are great for cheaper economy fares and fewer crowds—target weekday travel for best prices. CTA: Adjust dates slightly and compare neighboring airports to find the lowest economy fares from Seattle.
Flight Time & Schedules from Seattle-Tacoma International Airport (SEA)
Typical non-stop flight times from Seattle-Tacoma International Airport (SEA) include: Seattle-Tacoma International Airport (SEA) to Los Angeles (LAX) ~2 hours 45 minutes; to San Francisco (SFO) ~2 hours 20 minutes; to Las Vegas (LAS) ~2 hours 40 minutes; to Denver (DEN) ~3 hours 40 minutes; to New York (JFK) ~5 hours 30 minutes; to London (LHR) ~9–10 hours (seasonal, non-stop options vary). Schedules expand seasonally, with more daily flights in summer and around major holidays. For cheapest economy fares, target off-peak departures and consider connecting itineraries to lower total cost. CTA: Check daily schedules and book earliest available low-cost economy seats.
Cheap Flights From Seattle — Tips to Book the Lowest Economy Fares
To secure cheap flights from Seattle-Tacoma International Airport (SEA), use fare comparison sites, flexible date searches, and price alerts. Primary strategies include booking 4–8 weeks out for domestic trips and 2–4 months for international economy travel. Search for midweek departures (Tuesdays/Wednesdays), try red-eye options, and compare nearby airports like Portland International Airport (PDX) and Vancouver International Airport (YVR) for additional savings. CTA: Start a fare alert today to lock in cheap economy deals from Seattle.