Alaska Airlines, Delta, Southwest, and United have round-trip flights from Denver (DEN) to Seattle (SEA) for $157-$164, Nonstop. $79 one-way. Flights October to March. A few weekends available. Origin/Destination reversible. Holiday dates available.
Category: <span>Seattle</span>
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Alaska Airlines and Delta have round-trip flights from Phoenix (PHX) to Seattle (SEA) for $137-$147, Nonstop. $69 one-way. Flights October to March. Weekends available. Origin/Destination reversible. Holiday dates available.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Alaska Airlines has round-trip flights from Los Angeles (LAX) to Seattle (SEA) for $107-$117, Nonstop. $58 one-way. Flights October to March. Weekends available. Origin/Destination reversible. Thanksgiving dates available.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Alaska Airlines has round-trip flights from Atlanta (ATL) to Seattle or Portland, Oregon (SEA, PDX) for $177, Nonstop. Weekends available. Holiday blackouts.
Seattle: Flights October to February.
Portland: Flights October to December.
Seattle: Flights October to February.
Image Credits: Cacophony, Creative Commons
Alaska has round-trip flights from Atlanta (ATL) to Seattle or Portland Oregon (SEA, PDX) for $215-$237, Nonstop. Flights October to December and also January to March. Departures found on every day of the week. Holiday blackouts.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Frontier has round-trip flights from Denver (DEN) to Seattle (SEA) for $46-$48, Nonstop. $22-$29 one-way. Flights October to November. No Friday or Sunday departures. Origin/Destination reversible. No Thanksgiving dates available.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Chicago (ORD) to Seattle (SEA) for $197, Nonstop. Flights October to December and also January to March. Departures found on every day of the week. Origin/Destination reversible. Holiday dates available.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Phoenix (PHX) to Seattle (SEA) for $157, Nonstop. $79 each-way. Flights October to December and also January to March. No departures on Sunday. Origin/Destination reversible. Thanksgiving dates available.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Denver (DEN) to Seattle (SEA) for $157, Nonstop. Flights October to December and also January to March. Departures found on every day of the week. Origin/Destination reversible. Holiday dates available.
It’s rare for there to be NO blackout dates on a fare. Christmas, New Years, and Thanksgiving dates were found.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Frontier has round-trip flights from Denver (DEN) to Seattle, Houston, or Los Angeles (SEA) for $60-$74, NONSTOP. $30-$37 each-way. Flights September to November. Departures on Tuesday, Wednesday, and Saturday. Origin/Destination reversible. No Thanksgiving dates.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Frontier has round-trip flights from Denver (DEN) to Seattle, Salt Lake City, Austin, Houston, Las Vegas, or Phoenix (SEA, SLC, AUS, IAH, LAS, PHX) for $56, NONSTOP. Origin/Destination reversible. No Thanksgiving dates.
Most flights August to November.
Except – Salt Lake City: Flights July to November.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta and United have posted competing round-trip flights from Denver (DEN) to Seattle (SEA) for $157, NONSTOP. Flights May to July. Weekends available. Origin/Destination reversible.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Los Angeles (LAX) to Seattle (SEA) for $137, NONSTOP. Flights May to July. Weekends available. Origin/Destination reversible.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta and Alaska Airlines have round-trip flights from Los Angeles (LAX) to Seattle (SEA) for $137-$147, NONSTOP. Flights April to May.
Prices for airfare have been in an uptrend these past few weeks due to a spike in jet fuel prices. This is higher than the $97 fare that we mentioned previously.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Southwest, Alaska Airlines, Delta, American Airlines and various other airlines have round-trip flights from Phoenix (PHX) to Seattle or Portland, Oregon (SEA, PDX) for $91-$147, NONSTOP. Flights April to May. Origin/Destination reversible.
Carrier will depend on date and destination selected.
Seattle fares have good weekend availability. Portland fares do not. Portland’s cheapest fares depart on Tuesdays, Wednesdays, and Saturdays.
Portland fares start at $147, Seattle fares are less than $129.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Southwest, Delta, Hawaiian, United and various other airlines have round-trip flights from Denver (DEN) to Seattle (SEA) for $79-$89, NONSTOP. Flights March to May. Origin/Destination reversible.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta and Alaska Airlines have round-trip flights from New York/Newark (JFK/EWR) to Seattle (SEA) for $155-$175, NONSTOP. Flights March to May. Departures on Tuesday, Wednesday, and Saturday. Origin/Destination reversible.
For Alaska Airlines you must use SAVE30 coupon code. No coupon required for Delta.
Coupon expires tonight midnight 11:59p.m. PST Feb 25, 2026.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Phoenix (PHX) to Seattle (SEA) for $97, NONSTOP. Flights March to May. Weekends available. Origin/Destination reversible.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Los Angeles (LAX) to Seattle (SEA) for $97, NONSTOP. Flights March to May. Weekends available.
The Delta fare will be better than the $56 r/t Frontier fare after fees. Expect to pay $126 on Frontier after bag/seat fees.
Image Credits: Howard Ignatius, Creative Commons 2.0 (flickr)
Delta has round-trip flights from Denver (DEN) to Seattle (SEA) for $97, NONSTOP. Flights March to May. Weekends available. Origin/Destination reversible.