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.
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.
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.
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.
Delta has round-trip flights from Phoenix (PHX) to Seattle (SEA) for $97, NONSTOP. Flights March to May. Weekends available. Origin/Destination reversible.
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.
Delta has round-trip flights from Denver (DEN) to Seattle (SEA) for $97, NONSTOP. Flights March to May. Weekends available. Origin/Destination reversible.
Delta, United, and Alaska Airlines have round-trip flights from Denver (DEN) to Seattle, San Diego, or Portland Oregon (SEA, SAN, PDX) for $97-$117, NONSTOP. Flights March to May. Origin/Destination reversible.
Delta has round-trip flights from Los Angeles (LAX) to Seattle (SEA) for $117, NONSTOP. Flights March to May. Weekends available.
Delta has round-trip flights from Denver (DEN) to Seattle (SEA) for $117, NONSTOP. Flights March to May. Weekends available. Origin/Destination reversible.
United has round-trip flights from Newark/New York (EWR) to Seattle or Portland Oregon (SEA, PDX) for $177-$207, NONSTOP. Flights February to March. Very few weekends available. Origin/Destination reversible.
United, Delta, and Alaska Airlines have round-trip flights from Denver (DEN) to Seattle (SEA) for $97-$107, NONSTOP. Flights January to March. Weekends available. Origin/Destination reversible.
Hawaiian and Alaska Airlines have round-trip flights from Atlanta (ATL) to Seattle (SEA) for $147-$179, NONSTOP. Flights January to February. Weekends available.
Some small OTAs on Skyscanner have this for as low as $147; which is cheaper than the airline.
American Airlines has round-trip flights from New York (JFK) to Seattle (SEA) for $127-$137 with a connection. Flights January to March. Weekends available. Origin/Destination reversible.
[12/16/2025 @ 05:13 PM CT] American has removed Monday, Sunday, and Friday departures.
[12/16/2025 @ 07:55 PM CT] This is starting to sell out.
American Airlines has round-trip flights from Atlanta (ATL) to Seattle, Salt Lake City, or Burbank (SEA, SLC, BUR) for $137 with a connection. Flights January to March. Weekends available. Origin/Destination reversible.
Alaska Airlines, Delta, and United have round-trip flights from Denver (DEN) to Seattle (SEA) for $97, NONSTOP. Flights January to March. Weekends available. Origin/Destination reversible.
Alaska Airlines have round-trip flights from Atlanta (ATL) to Seattle (SEA) for $133-$159, NONSTOP. Flights December to February. Very few weekends available. No Christmas dates available.
For Alaska Airlines use the “WINTER20” code for 20% off (link). This code works on other destinations, see rules on Alaska Airlines website. Code expires tomorrow 11/19 at midnight.
Cheapest fares require using code.
Delta has round-trip flights from Phoenix (PHX) to Seattle (SEA) for $97, NONSTOP. Flights December to March. Weekends available. Origin/Destination reversible. Dates over Christmas are available.
Today, Delta, United, Southwest, and Alaska Airlines all have competing fares for round-trip flights from Denver (DEN) to Seattle (SEA) for $94-$103, NONSTOP. Flights December to March. Weekends available. Origin/Destination reversible. Dates over Christmas are available.
Alaska, Southwest, Delta, and United have round-trip flights from Denver (DEN) to Seattle, Orlando, or New Orleans (SEA, MCO, MSY) for $89-$157, NONSTOP. Seattle flights November to March, all other destinations have flights between January to March. Weekends available. Origin/Destination reversible. No Thanksgiving dates.
Cheapest fares are to/from Seattle in December ($89 r/t). Other months and destinations are about $127-$157.
