Cheap Flights from Rosario (RSJ) to St. Thomas (SPB)

Popular airlines from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas (SPB-St. Thomas Seaplane Base)

Flights from Rosario (RSJ) to St. Thomas (SPB)
Origin airport
Rosario Seaplane Base
Destination airport
St. Thomas Seaplane Base
Distance
3821 mi

Rosario to St. Thomas Flights

The cheapest times to fly from Rosario to St. Thomas

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 Rosario to St. Thomas are during the month of . You can find some of the cheapest flights from Rosario to St. Thomas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rosario to St. Thomas

Sunday is one of the best days to book for cheap flights from Rosario to St. Thomas: 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 Rosario to St. Thomas

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 Rosario to St. Thomas in 2026. 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 Rosario to St. Thomas 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 Rosario to St. Thomas 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.

 

Frequently asked questions

How much does a flight from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB) cost?
Get a cheap one-way flight or cheap return flight from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB)?
is the least expensive month to fly from RSJ to SPB. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from RSJ to SPB. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB)?
You'll have to catch a flight with a layover when traveling from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from RSJ to SPB?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB)?
Book a flight from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB) that leaves before 3 PM to reduce the risk of cancellations and delays. 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 Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB) last-minute?
Holding off until just before your trip to book a ticket from RSJ to SPB generally means paying more. While you may come across some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible for the best chance of landing a bargain.
Is it cheaper to book a RSJ to SPB flight and hotel package?
You'll typically save money by booking a RSJ to SPB flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After selecting your preferred flights and accommodations, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Rosario, WA (RSJ-Rosario Seaplane Base) to St. Thomas Seaplane Base Airport (SPB)?
Usually, it's possible to reschedule or cancel your RSJ to SPB flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.