The cheapest times to fly from IAD to TMS are
- January 15th to June 24th
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAD to TMS is late May to early June. Prices can be as high as $4596 for Saturday flights during late December, or as low as $1090 for Thursday flights around late May to early June.
When to Fly to São Tomé
Flying from Washington, DC (IAD) to Sao Tome Island (TMS) will usually cost between $1218 to $2508 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late May to early June with an average ticket price of $1257. Due to high demand the most expensive time to fly is late December, with an average price of $3562. Planning your trip to low-cost times can easily save you $2306 on economy flights and even more on first-class flights. Generally, any price below $1600 can be considered a good price for a round-trip IAD to TMS flight.
See below for a graph of average weekly prices for the IAD to TMS route. All prices are for round-trip tickets in USD.
Compared to other flights, the IAD to TMS flight is more expensive than the average and costs slightly more than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.17, which is below average.
Flight Prices by Day of the Week
Thursday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $421 (15%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Thursday and returning a week later will cost an average of $1522. Return trip prices are from the TMS to IAD flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from IAD to TMS can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 35 minutes may not be realistic.
Flight Hacking IAD to TMS
Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAD to TMS — but Champion Traveler does!
- Price for both tickets: $1257
- Average savings: $344 (21.47%)
- Price for both tickets: $1340
- Average savings: $261 (16.28%)
Flight Questions Answered
Still have questions about flying from IAD to TMS? We’ve got answers.
Which airlines fly this route?
You can find 6 major airlines flying this route most often: Brussels Airlines, Delta, Lufthansa, South African, Tap Air Portugal, United, and potentially more during busy seasons.
How far away is it from Salazar Airport to Washington Dulles International Airport?
The distance between the two airports is roughly 5889 miles or 9477 kilometers.
How long does it take to fly from IAD to TMS?
The real-world flight time for a nonstop IAD to TMS flight is about 11 hour 35 minutes.
How many flights go between Washington, DC and Sao Tome Island?
It depends on the day of the week and the date, but a typical day might have around 32 available flights from IAD to TMS.
Airport Location Info
|Origination airport name||Washington Dulles International Airport|
|Country||the United States|
|Destination airport name||Salazar Airport|
|City||Sao Tome Island|
|Country||Sao Tome and Principe|
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.