American Airlines has round-trip flights from Dallas (DFW) to Seattle or Portland (SEA, PDX) for $133, NONSTOP. Flights September to December. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible. No Christmas dates available.

A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.

Read More Nonstop Flights: Dallas to/from Seattle or Portland, Oregon $133 r/t [September-December] (No Christmas) – American Airlines

Airfare Deals American Airlines Oneworld Seattle

Frontier has round-trip flights from Dallas (DFW) to Seattle (SEA) for $38-$47, NONSTOP. Flights August to September. Departures on Wednesday and Saturday. Origin/Destination reversible.

Frontier fares do not include a free carry-on bag. Only a small personal item, like a Jansport SuperBreak backpack is free. You can avoid paying for seat selection if you accept the randomly assigned seat prior to boarding.

Frontier seats only have 28-inches of pitch; 2-to-3 inches less space than most other airlines.

Read More Nonstop Flights: Dallas to/from Seattle $38-$47 r/t [August-September] (budget carrier) – Frontier

Airfare Deals Frontier Seattle

Airfare Deals Alaska Airlines Seattle

American Airlines has round-trip flights from Dallas (DFW) to Seattle (SEA) for $178, NONSTOP. Flights August to December. Extended weekends available. Origin/Destination reversible. No Christmas dates available. Return flights before mid-September are “overnight Red-Eye” flights.

A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.

Read More Nonstop Flights: Dallas to/from Seattle $178 r/t [August-December] – American Airlines

Airfare Deals American Airlines Oneworld Seattle

Airfare Deals Alaska Airlines Seattle

Airfare Deals Alaska Airlines Seattle

Airfare Deals American Airlines Oneworld Seattle

American Airlines has round-trip flights from Dallas (DFW) to Seattle (SEA) for $113, NONSTOP. Flights January to February. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.

If you’re flying with two people, you can plug in most of these dates into Alaska Airlines and take advantage of the Buy-One-Get-One sale that is going on now. We’re seeing fares available for about $112 when you use the coupon code (STARBUCKS) and book two tickets.

Read More Nonstop Flights: Dallas to/from Seattle $113 r/t [January-February] – American Airlines / Alaska Airlines

Airfare Deals American Airlines Oneworld Seattle

Airfare Deals American Airlines Oneworld Seattle

Airfare Deals Seattle Star Alliance United

Airfare Deals Alaska Airlines Seattle

American Airlines has round-trip flights from Dallas (DFW) to Seattle or Portland (SEA/PDX) for $127, NONSTOP. Flights January to March. Weekends available. Origin/Destination reversible.

Change fees are waived and carry-on bag is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.

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Read More Nonstop Flights: Dallas to/from Seattle or Portland, Oregon $127 r/t [January-March.2021] – American Airlines

Airfare Deals American Airlines Oneworld Seattle