Cheap flights from Washington, D.C. to Saint Thomas Island from $109

The month of May is another great option to travel to Saint Thomas Island, with average flight prices from Washington, D.C. averaging around $404.

On average, the least expensive day to fly to Saint Thomas Island from Washington, D.C. is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $441. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Saint Thomas Island for around $633.

Fly from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King for the best Washington, D.C. - Saint Thomas Island Cyril E King flight prices

You are more likely to see cheaper flights to Saint Thomas Island from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $545 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Saint Thomas Island from Washington, D.C. for as low as $347 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to Saint Thomas Island flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 9% on your flight if you consider stops on a Washington, D.C. to Saint Thomas Island flight.

Delta, United Airlines, and American Airlines are the most popular carriers operating from Washington, D.C. to Saint Thomas Island Cyril E King

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Saint Thomas Island from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Saint Thomas Island. Keep in mind that there are 5 different airlines that fly to Saint Thomas Island on a routine basis, so you have a few additional options to choose from.

Houston (IAH) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Flights via Chicago (ORD) offer the lowest average round-trip price of $200.

Flights connecting via San Juan (SJU) have the shortest average one-way travel time: 5h 48m.

Chicago (ORD) has the shortest average layover time for this route: 0h 48m.

As of August 2026, there are 3 flights per week flying from Washington, D.C. to Saint Thomas Island. The most common day of the week flights depart is Mon, with 33% of flights taking off on this day.

Average flight duration from Washington, D.C. to Saint Thomas Island depends on which airport you fly into and out of. Flying from Baltimore to Saint Thomas Island is 4h 05m on average, while flying from Washington, D.C. to Saint Thomas Island is 4h 59m on average. Saint Thomas Island is the most popular airport in Saint Thomas Island.