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Cheap flights from Pittsburgh to Knoxville from $85

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pittsburgh to Knoxville departing on 4/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Pittsburgh to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
12:47 pm - 9:57 pm
PIT
-
TYS
9h 10m
1 stop
Allegiant Air Logo
12:37 pm - 11:24 pm
TYS
-
PIT
10h 47m
1 stop
$209Allegiant Air
Sun, Apr 19 - Sun, Apr 26
United Airlines Logo
4:07 pm - 10:43 pm
PIT
-
TYS
6h 36m
1 stop
United Airlines Logo
9:40 am - 1:54 pm
TYS
-
PIT
4h 14m
1 stop
$216United Airlines
Tue, Apr 14 - Wed, Apr 15
Multiple Airlines Logo
12:47 pm - 9:57 pm
PIT
-
TYS
9h 10m
1 stop
Multiple Airlines Logo
11:27 am - 2:22 pm
TYS
-
PIT
26h 55m
2 stops
$217Multiple Airlines
Sun, Apr 19 - Sun, Apr 26
Southwest Logo
4:20 pm - 8:50 pm
PIT
-
TYS
4h 30m
1 stop
Southwest Logo
7:05 am - 5:20 pm
TYS
-
PIT
10h 15m
2 stops
$226Southwest
Tue, Apr 14 - Wed, Apr 15
Southwest Logo
12:30 pm - 8:50 pm
PIT
-
TYS
8h 20m
2 stops
Southwest Logo
7:05 am - 5:20 pm
TYS
-
PIT
10h 15m
2 stops
$231Southwest
Tue, Apr 14 - Wed, Apr 15
Southwest Logo
4:20 pm - 8:50 pm
PIT
-
TYS
4h 30m
1 stop
Southwest Logo
5:50 pm - 9:20 pm
TYS
-
PIT
3h 30m
1 stop
$246Southwest
Tue, Apr 14 - Wed, Apr 15
Multiple Airlines Logo
12:47 pm - 9:57 pm
PIT
-
TYS
9h 10m
1 stop
Multiple Airlines Logo
11:27 am - 9:28 pm
TYS
-
PIT
10h 01m
2 stops
$247Multiple Airlines
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
12:14 pm - 10:53 am
PIT
-
TYS
22h 39m
1 stop
Multiple Airlines Logo
4:25 pm - 9:38 am
TYS
-
PIT
17h 13m
1 stop
$249Multiple Airlines
Sun, Apr 5 - Wed, Apr 8
Southwest Logo
4:20 pm - 8:50 pm
PIT
-
TYS
4h 30m
1 stop
Southwest Logo
7:05 am - 5:20 pm
TYS
-
PIT
10h 15m
2 stops
$252Southwest
Tue, Apr 14 - Wed, Apr 15
Multiple Airlines Logo
2:55 pm - 3:41 pm
PIT
-
TYS
24h 46m
2 stops
Multiple Airlines Logo
4:25 pm - 11:59 pm
TYS
-
PIT
7h 34m
1 stop
$254Multiple Airlines
Sat, Apr 18 - Wed, Apr 22

Allegiant Air flights from Pittsburgh to Knoxville

Our best Allegiant Air deals on Pittsburgh to Knoxville flight tickets
Allegiant Air
Apr 19
PIT12:47 pmPittsburgh
9h 10m
1 stop
TYS9:57 pmKnoxville McGhee Tyson
Apr 26
TYS12:37 pmKnoxville McGhee Tyson
10h 47m
1 stop
PIT11:24 pmPittsburgh
$209
Allegiant Air
Apr 5
PIT12:14 pmPittsburgh
22h 39m
1 stop
TYS10:53 amKnoxville McGhee Tyson
Apr 9
TYS12:37 pmKnoxville McGhee Tyson
10h 47m
1 stop
PIT11:24 pmPittsburgh
$264
Allegiant Air
Jun 21
PIT8:56 pmPittsburgh
25h 47m
1 stop
TYS10:43 pmKnoxville McGhee Tyson
Jun 26
TYS6:30 amKnoxville McGhee Tyson
8h 22m
1 stop
PIT2:52 pmPittsburgh
$267

American Airlines flights from Pittsburgh to Knoxville

Our best American Airlines deals on Pittsburgh to Knoxville flight tickets
American Airlines
Apr 13
PIT5:58 pmPittsburgh
4h 26m
1 stop
TYS10:24 pmKnoxville McGhee Tyson
Apr 18
TYS2:06 pmKnoxville McGhee Tyson
6h 52m
1 stop
PIT8:58 pmPittsburgh
$291
American Airlines
Apr 11
PIT3:30 pmPittsburgh
4h 30m
1 stop
TYS8:00 pmKnoxville McGhee Tyson
Apr 13
TYS5:11 pmKnoxville McGhee Tyson
5h 04m
1 stop
PIT10:15 pmPittsburgh
$311

momondo Fare Finder

 
Customize your flight search to find flights from Pittsburgh to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 24, 2026.
Use the filters below to find and compare flights from Pittsburgh to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Sun 4/19

12:47 pm-9:57 pm

1 stop9h 10m

Knoxville McGhee Tyson

Sun 4/26

12:37 pm-11:24 pm

1 stop10h 47m

$209

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Tue 4/14

4:07 pm-10:43 pm

1 stop6h 36m

Knoxville McGhee Tyson

Wed 4/15

9:40 am-1:54 pm

1 stop4h 14m

$216

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Sun 4/19

12:47 pm-9:57 pm

1 stop9h 10m

Knoxville McGhee Tyson

Sun 4/26

11:27 am-2:22 pm

2 stops26h 55m

$217

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Tue 4/14

4:20 pm-8:50 pm

1 stop4h 30m

Knoxville McGhee Tyson

Wed 4/15

7:05 am-5:20 pm

2 stops10h 15m

$226

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Tue 4/14

12:30 pm-8:50 pm

2 stops8h 20m

Knoxville McGhee Tyson

Wed 4/15

7:05 am-5:20 pm

2 stops10h 15m

$231
Quickest round-trip

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Tue 4/14

4:20 pm-8:50 pm

1 stop4h 30m

Knoxville McGhee Tyson

Wed 4/15

5:50 pm-9:20 pm

1 stop3h 30m

$246

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Sun 4/19

12:47 pm-9:57 pm

1 stop9h 10m

Knoxville McGhee Tyson

Sun 4/26

11:27 am-9:28 pm

2 stops10h 01m

$247

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Sun 4/5

12:14 pm-10:53 am

1 stop22h 39m

Knoxville McGhee Tyson

Wed 4/8

4:25 pm-9:38 am

1 stop17h 13m

$249

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Tue 4/14

4:20 pm-8:50 pm

1 stop4h 30m

Knoxville McGhee Tyson

Wed 4/15

7:05 am-5:20 pm

2 stops10h 15m

$252

PittsburghKnoxville

PIT - TYS

PITTYS

Pittsburgh

Sat 4/18

2:55 pm-3:41 pm

2 stops24h 46m

Knoxville McGhee Tyson

Wed 4/22

4:25 pm-11:59 pm

1 stop7h 34m

$254

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Knoxville from

How to get the cheapest flight ticket from Pittsburgh 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 August is, on average, the cheapest month to fly to Knoxville from Pittsburgh, with most prices found around $238. If you aren’t able to travel during the month of August, then book flights to Knoxville from Pittsburgh during September instead. Flights to Knoxville in September, while not as cheap as those in August, still average around $258.

How far in advance should I book a flight to Knoxville?

You are more likely to see cheaper flights to Knoxville from Pittsburgh when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $308 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Pittsburgh for as low as $236 on momondo.

How have Pittsburgh to Knoxville flight prices changed over time?

As of March 2026, prices for Pittsburgh to Knoxville flights are approximately 17% cheaper when compared to flights at the same time last year.

When to book flights from Pittsburgh to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Pittsburgh to Knoxville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Pittsburgh to Knoxville (PIT to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Pittsburgh to Knoxville

Fastest flight time

4h 06m

Direct flights

None
The fastest flight from Pittsburgh to Knoxville takes 4h 06m
There are no direct flights from Pittsburgh to Knoxville. There are no popular flight routes from Pittsburgh to Knoxville.
Search flight deals

  • How far is Pittsburgh to Knoxville McGhee Tyson by plane?

    The straight-line distance from Pittsburgh to Knoxville McGhee Tyson is 375.4 mi. 4h 06m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Pittsburgh Airport to Knoxville McGhee Tyson Airport?

    Prices for flights from Pittsburgh Airport to Knoxville McGhee Tyson Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Pittsburgh Airport to Knoxville McGhee Tyson Airport?

  • How old do you have to be to fly from Pittsburgh 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 Pittsburgh 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 Pittsburgh to Knoxville?

Best airlines flying from Pittsburgh to Knoxville

Compare and see reviews for airlines that fly from Pittsburgh to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $228Free CancellationRating
7.4
9,469 reviews
Search United Airlines flights
American AirlinesPriceFrom $228Free CancellationRating
7.1
11,492 reviews
Search American Airlines flights
DeltaPriceFrom $228Free CancellationRating
7.9
8,320 reviews
Search Delta flights

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Maryville
Crossville
Alcoa
Murphy
Oak Ridge
Lenoir City
Newport
Kodak
Jefferson City
Dandridge
Clinton
Rockford

Why use momondo?

Why should I use momondo to find a flight deal from Pittsburgh to Knoxville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Pittsburgh to Knoxville for you.

Can I find flights from Pittsburgh to Knoxville with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Pittsburgh to Knoxville flights to just show those with flexible booking policies.

How can momondo help me find flights from Pittsburgh to Knoxville?

Once all potential Pittsburgh to Knoxville flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Pittsburgh to Knoxville right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Knoxville from Pittsburgh. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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