Cheapest return IAD–STT flights, July

AirHint found the following cheapest return flights from Washington (IAD) to St. Thomas (STT) in July 2026 (see full year).

Return flights

01 Jul - 07 Jul Frontier Airlines
13 Jul - 18 Jul Frontier Airlines
23 Jul - 29 Jul Frontier Airlines
05 Jul - 12 Jul Frontier Airlines
01 Jul - 07 Jul United direct
11 Jul - 18 Jul Frontier Airlines
23 Jul - 26 Jul Delta
03 Jul - 06 Jul United direct
02 Jul - 05 Jul United direct

Also check the deals for one-way flights from Washington to St. Thomas in July.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in St. Thomas

Cheap car rent in St. Thomas

Feel free to contact us with any feedback or request another flight research.