What are the cheapest airlines flying from Knoxville to Saint Thomas Island round-trip?

Cheapflights users have booked flights from Knoxville to Saint Thomas Island round-trip from $302. Other airlines that can offer you cheap pricing are United Airlines, from $383, and American Airlines, from $430. Delta is priced at 52% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from Knoxville to Saint Thomas Island?

Travelers seeking maximum savings on their Knoxville to Saint Thomas Island flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Knoxville to Saint Thomas Island?

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Knoxville to Saint Thomas Island.

What is the cheapest day to fly round-trip from Knoxville to Saint Thomas Island?

Friday flights are found to be more expensive to fly from Knoxville to Saint Thomas Island. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Saint Thomas Island.

How far in advance should I book a flight from Knoxville to Saint Thomas Island?

To save on the cost of your flight from Knoxville to Saint Thomas Island, book at least 42 days before your planned departure. Booking around this time can save you about 414% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $317 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $762.

What is the cheapest month to fly from Knoxville to Saint Thomas Island?

July is one of the best times of the year to fly to Saint Thomas Island from Knoxville. Prices for July average $637 per person but you can even find prices for as low as $419. The most expensive prices can be found in the month of December. Opting for a July flight can save you 15% on your journey compared to booking in December

What is the cheapest time of day to fly from TYS to STT?

Unlike in the morning, when flights are generally more expensive, you can save up to 11% on flights from Knoxville to Saint Thomas Island by exploring options for tickets at noon.

How can I find direct flights from Knoxville to Saint Thomas Island?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Saint Thomas Island.

Can I find deals for business class flights from Knoxville to Saint Thomas Island?

Yes. Cheapflights offers flight deals from Knoxville to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$387+ Cheap Flights from Knoxville to Saint Thomas Island

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Cheap flight deals from Knoxville to Saint Thomas Island

Round-trip from	$387 (Kiwi.com)
Popular in	December
Cheapest in	July
Average price	$525

From Knoxville McGhee Tyson to Saint Thomas Island Cyril E King

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($41 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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Find flight deals from Knoxville to Saint Thomas Island

Cheapest flights from Knoxville to Saint Thomas Island
Explore the most affordable flight options available from Knoxville to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Wed 10/87:52 pmTYS - STT

1 stop17h 07mMultiple Airlines

Wed 10/1511:01 amSTT - TYS

2 stops34h 06mMultiple Airlines

Deal found 9/9

$387

Sun 10/199:01 pmTYS - STT

1 stop12h 55mMultiple Airlines

Fri 10/2411:01 amSTT - TYS

1 stop23h 02mMultiple Airlines

Deal found 9/11

$401

Thu 10/99:15 pmTYS - STT

1 stop12h 41mMultiple Airlines

Thu 10/1611:01 amSTT - TYS

1 stop9h 10mMultiple Airlines

Deal found 9/11

$430

Sun 10/268:37 pmTYS - STT

1 stop14h 13mAmerican Airlines

Sat 11/11:39 pmSTT - TYS

2 stops21h 40mAmerican Airlines

Deal found 9/10

$534

Best flights from Knoxville to Saint Thomas Island
Discover carefully curated flight deals from Knoxville to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Wed 10/87:52 pmTYS - STT

1 stop17h 07mMultiple Airlines

Wed 10/1511:01 amSTT - TYS

1 stop26h 17mMultiple Airlines

Deal found 9/9

$389

Tue 3/105:30 amTYS - STT

1 stop6h 20mDelta

Wed 3/111:00 pmSTT - TYS

1 stop8h 43mDelta

Deal found 9/9

$519

Sun 10/268:37 pmTYS - STT

1 stop14h 13mAmerican Airlines

Sat 11/11:39 pmSTT - TYS

2 stops21h 40mAmerican Airlines

Deal found 9/10

$534

Sun 10/199:01 pmTYS - STT

1 stop12h 55mMultiple Airlines

Fri 10/2411:01 amSTT - TYS

1 stop23h 02mMultiple Airlines

Deal found 9/11

$401

Thu 10/99:15 pmTYS - STT

1 stop12h 41mMultiple Airlines

Thu 10/1611:01 amSTT - TYS

1 stop9h 10mMultiple Airlines

Deal found 9/11

$430

Mon 3/98:31 pmTYS - STT

2 stops14h 29mAmerican Airlines

Fri 3/135:30 pmSTT - TYS

2 stops18h 54mAmerican Airlines

Deal found 9/10

$571

Last-minute flights from Knoxville to Saint Thomas Island
Discover last-minute flight deals from Knoxville to Saint Thomas Island. Data last updated September 11, 2025 and is based on user searches.

Wed 10/87:52 pmTYS - STT

1 stop17h 07mMultiple Airlines

Wed 10/1511:01 amSTT - TYS

2 stops34h 06mMultiple Airlines

Deal found 9/9

$387

Thu 10/99:15 pmTYS - STT

1 stop12h 41mMultiple Airlines

Thu 10/1611:01 amSTT - TYS

1 stop9h 10mMultiple Airlines

Deal found 9/11

$430

Sun 10/199:01 pmTYS - STT

1 stop12h 55mMultiple Airlines

Fri 10/2411:01 amSTT - TYS

1 stop23h 02mMultiple Airlines

Deal found 9/11

$401

Sun 10/268:37 pmTYS - STT

1 stop14h 13mAmerican Airlines

Sat 11/11:39 pmSTT - TYS

2 stops21h 40mAmerican Airlines

Deal found 9/10

$534

Cheapflights Fare Finder

Use the filters below to find and compare flights from Knoxville to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleSaint Thomas Island

TYS - STT

TYSSTT

Knoxville McGhee Tyson

Wed 10/8

7:52 pm-12:59 pm

1 stop17h 07m

Saint Thomas Island Cyril E King

Wed 10/15

11:01 am-1:18 pm

1 stop26h 17m

$389

KnoxvilleSaint Thomas Island

TYS - STT

TYSSTT

Knoxville McGhee Tyson

Sun 10/19

9:01 pm-9:56 am

1 stop12h 55m

Saint Thomas Island Cyril E King

Fri 10/24

11:01 am-10:03 am

1 stop23h 02m

$401

KnoxvilleSaint Thomas Island

TYS - STT

TYSSTT

Knoxville McGhee Tyson

Thu 10/9

9:15 pm-9:56 am

1 stop12h 41m

Saint Thomas Island Cyril E King

Thu 10/16

11:01 am-8:11 pm

1 stop9h 10m

$430

KnoxvilleSaint Thomas Island

TYS - STT

TYSSTT

Knoxville McGhee Tyson

Tue 3/10

5:30 am-11:50 am

1 stop6h 20m

Saint Thomas Island Cyril E King

Wed 3/11

1:00 pm-9:43 pm

1 stop8h 43m

$519

KnoxvilleSaint Thomas Island

TYS - STT

TYSSTT

Knoxville McGhee Tyson

Sun 10/26

8:37 pm-10:50 am

1 stop14h 13m

Saint Thomas Island Cyril E King

Sat 11/1

1:39 pm-11:19 am

2 stops21h 40m

$534

KnoxvilleSaint Thomas Island

TYS - STT

TYSSTT

Knoxville McGhee Tyson

Mon 3/9

8:31 pm-11:00 am

2 stops14h 29m

Saint Thomas Island Cyril E King

Fri 3/13

5:30 pm-12:24 pm

2 stops18h 54m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Knoxville to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Knoxville with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to Saint Thomas Island

How far ahead should I book a flight from Knoxville to Saint Thomas Island?

The best time to book flights from Knoxville to Saint Thomas Island is 41 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Knoxville to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from Knoxville to Saint Thomas Island (average of $433). Flying from Knoxville to Saint Thomas Island in June is currently the most expensive (average of $645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Saint Thomas Island

Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Knoxville to Saint Thomas Island by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,960 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,937 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Knoxville to Saint Thomas Island round-trip?
Cheapflights users have booked flights from Knoxville to Saint Thomas Island round-trip from $302. Other airlines that can offer you cheap pricing are United Airlines, from $383, and American Airlines, from $430. Delta is priced at 52% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Knoxville to Saint Thomas Island that include hotel bookings?
Yes. In addition to deals on Knoxville to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Knoxville to Saint Thomas Island?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Saint Thomas Island.
Can I find deals for business class flights from Knoxville to Saint Thomas Island?
Yes. Cheapflights offers flight deals from Knoxville to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Knoxville to Saint Thomas Island?
Currently, September is the cheapest month in which you can book a flight from Knoxville to Saint Thomas Island (average of $433). Flying from Knoxville to Saint Thomas Island in June is currently the most expensive (average of $645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

St. John

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Knoxville to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$302	Average$607	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$383	Average$679	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$430	Average$640	FlexibilityNo cancel fee	On-time71%

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$387+ Cheap flights from Knoxville (TYS) to Saint Thomas Island (STT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Knoxville to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Knoxville to Saint Thomas Island

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Knoxville to Saint Thomas Island

Cheapest flights from Knoxville to Saint Thomas IslandExplore the most affordable flight options available from Knoxville to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Knoxville to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Knoxville to Saint Thomas Island that are best for you.

Best time to book a flight from Knoxville to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Knoxville with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to Saint Thomas Island

How far ahead should I book a flight from Knoxville to Saint Thomas Island?

What is the cheapest month to book a flight from Knoxville to Saint Thomas Island?

Reviews of airlines servicing Saint Thomas Island

Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Knoxville to Saint Thomas Island by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Saint Thomas Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Knoxville to Saint Thomas Island round-trip?

Can I find deals for flights from Knoxville to Saint Thomas Island that include hotel bookings?

How can I find direct flights from Knoxville to Saint Thomas Island?

Can I find deals for business class flights from Knoxville to Saint Thomas Island?

What is the cheapest month to book a flight from Knoxville to Saint Thomas Island?

Traveling to a place near Saint Thomas Island?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Knoxville to Saint Thomas Island

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Knoxville to Saint Thomas Island

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Book with Flexibility

Travel Smart

Cheapest flights from Knoxville to Saint Thomas Island
Explore the most affordable flight options available from Knoxville to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.