$185 Cheap Delta flights Tri-Cities (TRI) to Seattle (SEA)

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$185 Cheap Delta flights Tri-Cities (TRI) to Seattle (SEA)

Prices were available within the past 7 days and start at $185 for one-way flights and $396 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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Flights from Tri-Cities (TRI) to Seattle (SEA)
Origin airport
Tri-Cities Regional
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta
Popular airline
American Airlines
Distance
2157 mi

Frequently asked questions

How much is a Delta Air Lines flight from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA)?
Grab affordable round-trip Delta Air Lines flights from $396 from TRI to SEA by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $185 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from TRI to SEA with Delta Air Lines?
Delta Air Lines flights to Seattle are generally more affordable in the low-season months of January and February. Whether you need a one-way or a return ticket, you could land a better deal then.
What is the cheapest time to book flights from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines?
Look for affordable Delta Air Lines flights from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA) one to three months before your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA)?
Enter your dates, click search and select the "Nonstop" filter on Expedia to find any direct flights from TRI to SEA with Delta Air Lines or other carriers.
What is the earliest Delta Air Lines flight from TRI to SEA?
Filter your results by "Early Morning" and "Morning" to browse the earliest departures from TRI to SEA. Leaving early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Seattle?
Seattle - Tacoma Intl. Airport (SEA) is the main Seattle gateway for Delta Air Lines flights from Tri-Cities Regional Airport (TRI).
Why fly with Delta Air Lines from TRI to SEA?
Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a popular option for many travelers flying from TRI to SEA. What's more, if you're a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, you can modify or cancel your flight, although additional charges may apply if you booked more than 24 hours ago. Prefer to keep your options open? Use Expedia's "Changes included" and "No cancel fee" filters to find flights that won't charge you extra if you need to adjust your plans. To make modifications, visit "Trips," select your flight and click on "Manage Booking" for further information.

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*Available to One Key members.