HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Saint Thomas Island

$552+ Cheap flights from Boise (BOI) 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STT
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boise to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boise to Saint Thomas Island

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Saint Thomas Island (STT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 18, 2025.

Round-trip from

$552
(FlightHub)

Popular in

March

Cheapest in

November

Average price

$1,149
From Boise Air Term. Gowen Fld to Saint Thomas Island Cyril E King
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Boise to Saint Thomas Island

Cheapest flights from Boise to Saint Thomas Island
Explore the most affordable flight options available from Boise to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This FlightHub deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/47:48 pmBOI - STT
2 stops12h 00mSpirit Airlines
Wed 8/132:43 pmSTT - BOI
2 stops29h 43mSpirit Airlines
Deal found 6/16$552
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:00 pmBOI - STT
2 stops15h 12mUnited Airlines
Tue 11/182:15 pmSTT - BOI
2 stops26h 15mUnited Airlines
Deal found 6/16$774
This American Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/25:16 pmBOI - STT
2 stops15h 33mAmerican Airlines
Tue 7/85:05 pmSTT - BOI
2 stops19h 49mAmerican Airlines
Deal found 6/18$850
This United deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/225:17 pmBOI - STT
2 stops17h 39mMultiple Airlines
Sat 11/2910:55 amSTT - BOI
2 stops13h 26mMultiple Airlines
Deal found 6/18$1,727

Cheapflights Fare Finder

Customize your flight search to find flights from Boise to Saint Thomas Island 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, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
Use the filters below to find and compare flights from Boise to Saint Thomas Island that are best for you.

Fly from

Boise

Fly to

Saint Thomas Island

Route

Depart

Return

Price

BoiseSaint Thomas Island

BOI - STT

BOISTT

Boise Air Term. Gowen Fld

Mon 8/4

7:48 pm-9:48 am

2 stops12h 00m

Saint Thomas Island Cyril E King

Wed 8/13

2:43 pm-6:26 pm

2 stops29h 43m

$552

BoiseSaint Thomas Island

BOI - STT

BOISTT

Boise Air Term. Gowen Fld

Tue 11/11

7:00 pm-1:12 pm

2 stops15h 12m

Saint Thomas Island Cyril E King

Tue 11/18

2:15 pm-1:30 pm

2 stops26h 15m

$774

BoiseSaint Thomas Island

BOI - STT

BOISTT

Boise Air Term. Gowen Fld

Wed 7/2

5:16 pm-10:49 am

2 stops15h 33m

Saint Thomas Island Cyril E King

Tue 7/8

5:05 pm-10:54 am

2 stops19h 49m

$850

BoiseSaint Thomas Island

BOI - STT

BOISTT

Boise Air Term. Gowen Fld

Sat 11/22

5:17 pm-1:56 pm

2 stops17h 39m

Saint Thomas Island Cyril E King

Sat 11/29

10:55 am-9:21 pm

2 stops13h 26m

$1,727

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

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

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Boise 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 Boise to Saint Thomas Island

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

Currently, September is the cheapest month in which you can book a flight from Boise to Saint Thomas Island (average of $433). Flying from Boise to Saint Thomas Island in June is currently the most expensive (average of $651). 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.

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

Find hourly flight availability from Boise to Saint Thomas Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.

It’s typically best to fly out from Boise to Saint Thomas Island in the morning. Doing so could potentially save you 45% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Saint Thomas Island

Get insights into the airlines that provide service to Saint Thomas Island. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Thomas Island. Reviews last updated June 18, 2025.
United Airlines
7.4
Good
8,810 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,810 reviews
United Airlines
7.4
Good
8,810 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,810 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Spirit Airlines
6.3
Okay
8,065 reviews
United Airlines
7.4
Good
8,810 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Boise 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 Boise to Saint Thomas Island round-trip?

    Cheapflights users have booked flights from Boise to Saint Thomas Island round-trip from $552. Other airlines that can offer you cheap pricing are United Airlines, from $774, and American Airlines, from $850. Spirit Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Yes. In addition to deals on Boise to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise 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 Boise to Saint Thomas Island.

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

    Yes. Cheapflights offers flight deals from Boise 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 Boise to Saint Thomas Island?

    Currently, September is the cheapest month in which you can book a flight from Boise to Saint Thomas Island (average of $433). Flying from Boise to Saint Thomas Island in June is currently the most expensive (average of $651). 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

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
St. John

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 Boise to Saint Thomas Island

See prices for flight routes from nearby airports that may be better suited for you.
Jackson to Saint Thomas Island flights

Top 3 airlines flying from Boise to Saint Thomas Island

Discover the top 3 airlines that operate flights from Boise to Saint Thomas Island. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$557Average$887FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$577Average$832FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$667Average$854FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.