Cheap Flights from Portland (PWM) to Tri-Cities (TRI)

Compare Portland to Tri-Cities flight deals

Find the cheapest month or even day of the year to fly to Tri-Cities

Book the best Tri-Cities fare with no extra fees

Flight deals from Portland to Tri-Cities

Looking for a cheap last-minute deal or the best return flight from Portland Airport to Tri-Cities Airport? If you want to travel next month, return fares start from £230. Find the lowest prices on one-way and return tickets right here.

Kingsport.£154 per passenger.Departing Thu, 20 Aug.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Portland on Thu, 20 Aug, arriving in Tri-Cities.Price includes taxes and charges.From £154, select.

Find the cheapest month to fly from Portland to Tri-Cities from £154 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Tri-Cities flights are currently cheapest in August.

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Portland to Tri-Cities: Alternative routes

Compare routes from Portland to Kingsport below. You may find an airport to fly into that's cheaper, faster, or easier than Tri-Cities.

Tri-Cities

10 miles from central Kingsport

ClosestCheapest

from £154

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Portland to Kingsport: Flight information

The things to know before you go.

Cheapest flight found	£154
Cheapest month to fly	August

Finding cheap flights from Portland to Tri-Cities: Frequently asked questions

How much are return flights from Portland to Tri-Cities?

The best price we found for a return flight from Portland to Tri-Cities is £230. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Portland to Tri-Cities?

Currently, there are no airlines that fly direct from Portland to Tri-Cities. But we found flights with one or more stops from £230.

How many flights are there a week from Portland to Tri-Cities?

As of July 2026, there are no flights flying from Portland to Tri-Cities.

When is the cheapest time to fly from Portland to Tri-Cities?

The cheapest month to fly from Portland to Tri-Cities is usually August.

Which upcoming date is cheapest to fly from Portland Airport to Tri-Cities Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Tri-Cities Airport on Wednesday, 19 August 2026.

Can I get a direct flight from Portland Airport to Tri-Cities Airport?

No airlines currently offer direct flights between Portland Airport and Tri-Cities Airport. Most routes have one or more stops.

How can I find the best flight deal to Tri-Cities?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Tri-Cities but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Kingsport?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kingsport is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Portland Airport to Tri-Cities with?

Currently, Delta offers the cheapest flight tickets to Tri-Cities.

How to find cheap flights to Kingsport (TRI) from Portland (PWM) in 2026

Looking for cheap tickets from Portland to Tri-Cities? Return tickets start from £230 and one-way flights to Tri-Cities from Portland start from £154

Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Portland to Tri-Cities. And with us there are no hidden fees - what you see is what you pay.
Compare flight deals to Kingsport from Portland from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to Kingsport start from £154 one-way.
Flex your dates to find the best PWM-TRI ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Tri-Cities from Portland.
Set up a Price Alert. You can easily track the fare of your cheap Portland-Tri-Cities flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Flexible on when you travel? The cheapest month to fly from Portland to Tri-Cities is August.
Fly without stops. Only interested in direct flights between Portland and Tri-Cities? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business class flights from Portland and Tri-Cities. We scour the internet for the best Business, Premium Economy and First Class flight fares to Kingsport, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Portland to Tri-Cities flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Portland and Tri-Cities whenever you want.

Combine your flight to Tri-Cities from Portland with hotels and car hire

Once you've secured your cheap flight ticket from Portland to Tri-Cities, discover the best prices and exclusive rates for hotels in Kingsport or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.