Flights to Tri-Cities from Boston - $155

View $155 flight on Sun, Nov 2, 2025Opens in a new window

Popular airlines from Boston to Tri-Cities

  • Delta

    Delta

  • American Airlines

    American Airlines

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Cheap Flights from Boston to Tri-Cities (BOS-TRI)

Prices were available within the past 7 days and start at $155 for one-way flights and $309 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 24 - Fri, Nov 28
BOS
Boston
TRI
Tri-Cities
$309 Roundtrip, found 6 hours ago
$309
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Mon, Nov 24 from Boston to Tri-Cities, returning Fri, Nov 28, priced at $309 found 6 hours ago
American Airlines
Sat, Sep 13 - Fri, Sep 19
BOS
Boston
TRI
Tri-Cities
$312 Roundtrip, found 3 days ago
$312
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 13 from Boston to Tri-Cities, returning Fri, Sep 19, priced at $312 found 3 days ago
Delta
Thu, Aug 14 - Tue, Aug 19
BOS
Boston
TRI
Tri-Cities
$314 Roundtrip, found 1 day ago
$314
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Aug 14 from Boston to Tri-Cities, returning Tue, Aug 19, priced at $314 found 1 day ago
American Airlines
Wed, Aug 27 - Sat, Aug 30
BOS
Boston
TRI
Tri-Cities
$314 Roundtrip, found 14 hours ago
$314
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Wed, Aug 27 from Boston to Tri-Cities, returning Sat, Aug 30, priced at $314 found 14 hours ago
Delta
Wed, Aug 27 - Sat, Aug 30
BOS
Boston
TRI
Tri-Cities
$318 Roundtrip, found 14 hours ago
$318
Roundtrip
found 14 hours ago
Select Delta flight, departing Wed, Aug 27 from Boston to Tri-Cities, returning Sat, Aug 30, priced at $318 found 14 hours ago
Delta
Tue, Aug 12 - Sat, Aug 16
BOS
Boston
TRI
Tri-Cities
$319 Roundtrip, found 4 hours ago
$319
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Aug 12 from Boston to Tri-Cities, returning Sat, Aug 16, priced at $319 found 4 hours ago

Find the cheapest month to fly from Boston (BOS) to Blountville (TRI)

July is typically the cheapest month to fly

From $308 - $596 per traveler.

Graph displaying average flight prices per month

Alternative airports

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Tri-Cities Regional TRI. Cheapest option available. Flights from $319
TRI
Tri-Cities Regional
Cheapest
Flights from $319
*Available to One Key members.