Cheap flights from Portland to Knoxville from $119
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Knoxville departing on 5/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Portland to Knoxville
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
United Airlines flights from Portland to Knoxville
Our best United Airlines deals on Portland to Knoxville flight tickets
American Airlines flights from Portland to Knoxville
Our best American Airlines deals on Portland to Knoxville flight tickets
See travel insights to Knoxville from
How to get the cheapest flight ticket from Portland to Knoxville
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Knoxville?
The month of September is, on average, the cheapest month to fly to Knoxville from Portland, with most prices found around $389. If you aren’t able to travel during the month of September, then book flights to Knoxville from Portland during February instead. Flights to Knoxville in February, while not as cheap as those in September, still average around $408.
What is the cheapest day to depart on your flight to Knoxville?
The cheapest day to depart from Portland to Knoxville is on a Tuesday. Travelers who choose to depart for Knoxville on a Tuesday will often find tickets for as low as $442. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Knoxville for around $583.
What is the cheapest time of day to depart on your flight to Knoxville?
At noon is the cheapest time of day to fly from Portland to Knoxville when you can find flight prices for as low as $460. Flying to Knoxville at noon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the evening when prices are around $478.
How far in advance should I book a flight to Knoxville?
You are more likely to see cheaper flights to Knoxville from Portland when booking 3 weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $475 when searching 3 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Portland for as low as $402 on momondo.
What is the cheapest airline that flies from Portland to Knoxville McGhee Tyson?
Frontier, American Airlines, and Delta are the most popular carriers operating from Portland to Knoxville McGhee Tyson
What airlines fly to Knoxville?
American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Knoxville from Portland according to our data. American Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 4 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland to Knoxville
Cheap Portland to Knoxville (PDX to TYS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Knoxville
How far is Portland to Knoxville McGhee Tyson by plane?
Portland and Knoxville McGhee Tyson are 2108.9 mi apart from one another. A reasonable flight in good conditions will take 6h 17m.
When did momondo last update prices for flights from Portland Airport to Knoxville McGhee Tyson Airport?
Prices for flights from Portland Airport to Knoxville McGhee Tyson Airport were last updated today.
How many operators does momondo search for flights from Portland Airport to Knoxville McGhee Tyson Airport?
As of April 2025, there are 4 operators available to choose from for flights from Portland Airport to Knoxville McGhee Tyson Airport.
How old do you have to be to fly from Portland Airport to Knoxville McGhee Tyson Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Knoxville McGhee Tyson Airport.
What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?
The required travel and health documents for your Knoxville McGhee Tyson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Portland to Knoxville?
momondo data reveals that the most frequently booked airline on the route from Portland to Knoxville is American Airlines, representing 49% of all bookings. The subsequent popular airlines are United Airlines at 25%, Delta at 18%, and Frontier at 7%.
Best airlines flying from Portland to Knoxville
Compare and see reviews for airlines that fly from Portland to Knoxville with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $168 | Free Cancellation | Rating 6.0 3,281 reviews | |||
| PriceFrom $288 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $308 | Free Cancellation | Rating 8.0 7,916 reviews | |||
| PriceFrom $308 | Free Cancellation | Rating 7.4 8,667 reviews |
Traveling to a place near Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to Knoxville?
It is quick and easy to find Portland to Knoxville flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Knoxville that suits you.
Can I find flights from Portland to Knoxville with flexible booking policies on momondo?
Flights from Portland to Knoxville with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to Knoxville?
momondo provides multiple filters to help you find the best flight to Knoxville from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Portland to Knoxville right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Knoxville, momondo offers a useful price alert feature which will track prices for flights to Knoxville from Portland and alert you when they change.