Cheap Flights From Seattle - Tacoma Intl. (SEA) To Tri-Cities Regional (TRI)

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Cheapest Flights from Seattle (SEA) to Tri-Cities (TRI)

The cheapest flights to Tri-Cities Regional found within the past 7 days were CA $654 round trip and CA $1,101 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $654 Roundtrip, found 3 days ago
CA $654
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $654 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $697 Roundtrip, found 3 days ago
CA $697
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $697 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $698 Roundtrip, found 3 days ago
CA $698
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $698 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $734 Roundtrip, found 3 days ago
CA $734
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $734 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $737 Roundtrip, found 3 days ago
CA $737
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $737 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $739 Roundtrip, found 3 days ago
CA $739
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $739 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $778 Roundtrip, found 3 days ago
CA $778
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $778 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $779 Roundtrip, found 3 days ago
CA $779
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $779 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $788 Roundtrip, found 3 days ago
CA $788
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $788 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $808 Roundtrip, found 3 days ago
CA $808
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $808 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $817 Roundtrip, found 3 days ago
CA $817
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $817 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $822 Roundtrip, found 3 days ago
CA $822
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $822 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $832 Roundtrip, found 3 days ago
CA $832
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $832 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $851 Roundtrip, found 3 days ago
CA $851
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $851 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $852 Roundtrip, found 3 days ago
CA $852
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $852 found 3 days ago
Wed, Sep 2 - Wed, Sep 23
SEA
Seattle
TRI
Tri-Cities
CA $862 Roundtrip, found 3 days ago
CA $862
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 2 from Seattle to Tri-Cities, returning Wed, Sep 23, priced at CA $862 found 3 days ago

Frequently asked questions

Are there direct flights from Sea-Tac Airport to Tri-Cities Airport?
Take note of your connecting gate, because there are no direct flights on the SEA to TRI route. American Airlines, Delta and Qatar Airways are among the airlines that will take you to Blountville with only one stopover.
What airlines fly from Sea-Tac Airport to Tri-Cities Airport?
As it stands, no airline flies straight to Tri-Cities Regional Airport (TRI) from Seattle - Tacoma Intl. Airport (SEA). Touching down there will involve one stopover at least. Book your ticket early to walk away with the best price and connections.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.