Cheap Flights from Helena (HLN) to São Tomé Island (TMS)

Popular airlines from Helena, MT (HLN-Helena Regional) to São Tomé Island (TMS-São Tomé Intl.)

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Frequently asked questions

How much does a flight from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS) cost?
Lock in a cheap one-way flight or cheap return flight from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS)?
Planning your trip for may help you find better deals, as it's the cheapest month for flights between HLN and TMS. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest HLN to TMS flight.
How many flights per day from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS)?
There aren't any daily nonstop flights available from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from HLN to TMS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS)?
Book a flight from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS) last-minute?
Booking your plane ticket from HLN to TMS just before your trip is typically more expensive. But if there's some wiggle room with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a HLN to TMS flight and hotel package?
You'll typically save money by booking a HLN to TMS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your preferred flights and accommodations, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Helena Regional Airport (HLN) to Sao Tome Intl. Airport (TMS)?
You can usually cancel or reschedule your HLN to TMS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Helena Regional
Destination airport
São Tomé Intl.
Distance
7529 mi

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Helena to São Tomé Island Flights

The cheapest times to fly from Helena to São Tomé Island

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Helena to São Tomé Island are during the month of . You can find some of the cheapest flights from Helena to São Tomé Island with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Helena to São Tomé Island

Sunday is one of the best days to book for cheap flights from Helena to São Tomé Island: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Helena to São Tomé Island

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Helena to São Tomé Island in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Helena to São Tomé Island flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Helena to São Tomé Island airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Helena to São Tomé Island Flights
*Available to One Key members.