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72 € Cheap Flights from St. Pete–Clearwater International to Knoxville

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      Travellers and cabin class, 1 Adult, Economy
      Allegiant Air

      Compare St. Pete–Clearwater International to Knoxville flight deals

      Find the cheapest month or even day of the year to fly to Knoxville

      Book the best Knoxville fare with no extra fees

      Flight deals from St. Pete–Clearwater International to Knoxville

      Looking for a cheap last-minute deal or the best return flight from St. Pete–Clearwater International Airport to Knoxville Airport? If you want to travel next month, return fares start from 72 €. Find the lowest prices on one-way and return tickets right here.
      Knoxville.72 € per passenger.Departing Sat, 3 Oct, returning Fri, 16 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Sat, 3 Oct, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Fri, 16 Oct, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 72 €, select.
      Knoxville.74 € per passenger.Departing Sat, 31 Oct, returning Sat, 14 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Sat, 31 Oct, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sat, 14 Nov, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 74 €, select.
      Knoxville.78 € per passenger.Departing Tue, 29 Sep, returning Fri, 16 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Tue, 29 Sep, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Fri, 16 Oct, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 78 €, select.
      Knoxville.82 € per passenger.Departing Sat, 14 Nov, returning Wed, 18 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Sat, 14 Nov, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Wed, 18 Nov, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 82 €, select.
      Knoxville.90 € per passenger.Departing Thu, 24 Dec, returning Mon, 4 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Thu, 24 Dec, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 4 Jan, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 90 €, select.
      Knoxville.90 € per passenger.Departing Tue, 29 Sep, returning Wed, 30 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Tue, 29 Sep, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Wed, 30 Sep, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 90 €, select.
      Knoxville.94 € per passenger.Departing Fri, 8 Jan, returning Fri, 15 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Fri, 8 Jan, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Fri, 15 Jan, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 94 €, select.
      Knoxville.94 € per passenger.Departing Fri, 19 Feb, returning Mon, 22 Feb.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Fri, 19 Feb, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 22 Feb, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 94 €, select.
      Knoxville.98 € per passenger.Departing Sat, 5 Dec, returning Mon, 21 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Sat, 5 Dec, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 21 Dec, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 98 €, select.
      Knoxville.101 € per passenger.Departing Sat, 14 Nov, returning Fri, 4 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Sat, 14 Nov, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Fri, 4 Dec, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 101 €, select.
      Knoxville.108 € per passenger.Departing Fri, 19 Feb, returning Mon, 8 Mar.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Fri, 19 Feb, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 8 Mar, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 108 €, select.
      Knoxville.112 € per passenger.Departing Fri, 22 Jan, returning Wed, 10 Feb.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Fri, 22 Jan, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Wed, 10 Feb, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 112 €, select.
      Knoxville.117 € per passenger.Departing Tue, 6 Apr, returning Mon, 12 Apr.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Tue, 6 Apr, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 12 Apr, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 117 €, select.
      Knoxville.117 € per passenger.Departing Mon, 8 Mar, returning Fri, 12 Mar.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Mon, 8 Mar, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Fri, 12 Mar, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 117 €, select.
      Knoxville.123 € per passenger.Departing Fri, 26 Mar, returning Mon, 12 Apr.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Fri, 26 Mar, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 12 Apr, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 123 €, select.
      Knoxville.159 € per passenger.Departing Mon, 17 May, returning Mon, 17 May.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from St. Pete–Clearwater International on Mon, 17 May, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 17 May, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From 159 €, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from St. Pete–Clearwater International to Knoxville found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from St. Pete–Clearwater International to Knoxville

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St. Pete–Clearwater International to Knoxville flights are currently cheapest in October.
      Sep
      from 90 €
      Oct
      from 72 €
      Nov
      from 82 €
      Dec
      from 98 €
      Jan
      from 94 €
      Feb
      from 94 €
      Mar
      from 117 €
      Apr
      from 117 €
      May
      from 159 €
      Jun
      Find prices
      Jul
      Find prices
      Aug
      Find prices

      Direct flights from St. Pete–Clearwater International to Knoxville

      Allegiant Air

      St. Pete–Clearwater International to Knoxville: Alternative routes

      Compare routes from St. Pete–Clearwater International to Knoxville below. You may find an airport to fly into that's cheaper, faster, or easier than Knoxville.

      Knoxville

      18km from central Knoxville
      ClosestCheapest
      from 72 €
      Search flights

      Tampa to Knoxville: Flight information

      The things to know before you go.
      Cheapest flight found72 €
      Cheapest month to flyOctober
      Average flight time1 hr, 41 mins
      Most popular airlineAllegiant Air
      Average flights per week8

      Finding cheap flights from St. Pete–Clearwater International to Knoxville: Frequently asked questions

      The best price we found for a return flight from St. Pete–Clearwater International to Knoxville is 72 €. 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.
      1 hour and 41 minutes is the average flight time from St. Pete–Clearwater International to Knoxville.
      Allegiant Air flies direct from St. Pete–Clearwater International to Knoxville.
      As of September 2026, there are 8 flights per week flying from St. Pete–Clearwater International to Knoxville.
      The cheapest month to fly from St. Pete–Clearwater International to Knoxville is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St. Pete–Clearwater International Airport to Knoxville Airport on Saturday, 3 October 2026.
      Yes – the average flight time is 1 hour and 41 minutes.
      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 Knoxville 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.

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

      Currently, Allegiant Air offers the cheapest flight tickets to Knoxville.

      Flying from St. Pete–Clearwater International Airport (PIE) to Knoxville Airport (TYS): what you need to know

      • Hop on a direct flight from St. Pete–Clearwater International Airport to Knoxville Airport and you'll be in the air for an average of 1 hour 40 minutes.

      • Take your pick of seven weekly St. Pete–Clearwater International Airport to Knoxville Airport flights. The 06:00 departure with Allegiant Air is the earliest available. Allegiant Air operates the latest service of the day at 21:58.

      • Your PIE to TYS flight won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

      • During popular months such as July, it's a good idea to get to the airport earlier than normal. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during a peak period in general.

      • Allegiant Air is your gateway to discovering Knoxville (and perhaps some other great parts of the United States!). Check out the direct flights from St. Pete–Clearwater International Airport to Knoxville Airport offered by this popular airline.

      • Most travellers choose to travel with Allegiant Air on this route.

      • The carrier with the most consistent on-time arrival rate for PIE to TYS flights is Allegiant Air.

      • Explore another city along the way or simply break up your flight with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from St. Pete–Clearwater International Airport to Knoxville Airport. Many passengers pass through Minneapolis St Paul Airport when flying between PIE and TYS.

      How to find the cheapest flights from St. Pete–Clearwater International Airport (PIE) to Knoxville Airport (TYS)

      • 35 € is currently the best price for a one-way St. Pete–Clearwater International Airport to Knoxville Airport flight. Return flights start at 72 €. These prices may change depending on availability and demand.

      • To secure cheap tickets from PIE to TYS, book your trip five months ahead of your departure date.

      • October is the cheapest month for flights from St. Pete–Clearwater International Airport to Knoxville Airport. If you prefer to travel during a different time of year, the 'Whole month' tool will give you the lowest airfares across every month.

      • There's no need to check every day to find out if fares have gone down when you set up a Price Alert. We'll send you an update the moment a special offer becomes available on cheap flights from PIE to TYS.

      • Find the right flight for you by using the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from St. Pete–Clearwater International Airport to Knoxville Airport, use the 'Sort by' function. You can also filter by departure and arrival times, airline, and journey duration.

      Handy information about St. Pete–Clearwater International Airport (PIE)

      • PIE is located at Suite 221 - Terminal Building.

      • Of all flights leaving St. Pete–Clearwater International Airport, 77% land on schedule at their destination.

      • Central Tampa to St. Pete–Clearwater International Airport is around 32 kilometres. Depending on traffic, it'll take about 35 minutes to get there if you're driving, ride-sharing or catching a taxi.

      • Taking public transport? Expect a journey time of around 1 hour 30 minutes.

      • Catching an early flight from St. Pete–Clearwater International Airport to Knoxville Airport? Avoid the last-minute rush to the terminal (and sneak in some extra precious sleep) by picking one of these hotels close to PIE:

      Arriving at Knoxville Airport (TYS)

      When to fly to Knoxville Airport (TYS)

      • The quietest month for a flight from St. Pete–Clearwater International Airport to Knoxville Airport is March, while October is the busiest. Pick the ideal time to visit Knoxville based on whether you prefer a more fast-paced or easygoing experience.

      • Before locking in your flight from St. Pete–Clearwater International Airport to Knoxville Airport, think about the kind of weather you enjoy. July is the warmest month in Knoxville, with temperatures ranging from 17ºC (63ºF) to 32ºC (90ºF).

      • For cooler conditions, look for a cheap ticket from PIE to TYS in January. Average temperatures are between -6ºC (21ºF) and 11ºC (52ºF) then.

      Explore more of the United States

      • Columbus is just one of the many cities in the United States waiting to be discovered once you've seen the sights of Knoxville. Around 451 kilometres away to the north, its best attractions include Franklin Park Conservatory and Botanical Gardens, Whetstone Park / Park of Roses and Ohio Theatre.

      • If you're interested in discovering another major destination in the United States, head for Indianapolis, roughly 467 kilometres north-west of Knoxville. Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis are among its highlights.

      Plan the rest of your trip from Tampa to Knoxville

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.