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Cheap flights from Washington, D.C. to São Tomé from $1,586

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to São Tomé departing on 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to São Tomé

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
5:30 pm - 6:05 pmIAD-TMS
19h 35m2 stops
TAP AIR PORTUGAL Logo
10:25 pm - 9:00 pmTMS-IAD
27h 35m1 stop
$1,586TAP AIR PORTUGAL
Find Deal
Sat, Jan 17 - Sat, Jan 24
TAP AIR PORTUGAL Logo
5:30 pm - 6:05 pmIAD-TMS
19h 35m2 stops
TAP AIR PORTUGAL Logo
10:25 pm - 7:20 amTMS-IAD
37h 55m2 stops
$1,780TAP AIR PORTUGAL
Find Deal
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
8:45 pm - 12:10 pmIAD-TMS
34h 25m3 stops
Multiple Airlines Logo
10:25 pm - 6:45 pmTMS-IAD
25h 20m2 stops
$2,089Multiple Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
8:45 pm - 12:10 pmIAD-TMS
34h 25m3 stops
Multiple Airlines Logo
10:25 pm - 8:54 pmTMS-IAD
27h 29m3 stops
$2,450Multiple Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24

TAP AIR PORTUGAL flights from Washington, D.C. to São Tomé

Our best TAP AIR PORTUGAL deals on Washington, D.C. to São Tomé flight tickets
TAP AIR PORTUGAL
Jan 17
IAD5:30 pmWashington, D.C. Dulles Intl
19h 35m
2 stops
TMS6:05 pmSao Tome Is
Jan 24
TMS10:25 pmSao Tome Is
27h 35m
1 stop
IAD9:00 pmWashington, D.C. Dulles Intl
$1,586
Find similar
TAP AIR PORTUGAL
Jan 17
IAD5:30 pmWashington, D.C. Dulles Intl
19h 35m
2 stops
TMS6:05 pmSao Tome Is
Jan 24
TMS10:25 pmSao Tome Is
37h 55m
2 stops
IAD7:20 amWashington, D.C. Dulles Intl
$1,780
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to São Tomé that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. to São Tomé that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/17

5:30 pm-6:05 pm

2 stops19h 35m

Sao Tome Is

Sat 1/24

10:25 pm-9:00 pm

1 stop27h 35m

$1,586

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/17

5:30 pm-6:05 pm

2 stops19h 35m

Sao Tome Is

Sat 1/24

10:25 pm-7:20 am

2 stops37h 55m

$1,780

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/17

8:45 pm-12:10 pm

3 stops34h 25m

Sao Tome Is

Sat 1/24

10:25 pm-6:45 pm

2 stops25h 20m

$2,089

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/17

8:45 pm-12:10 pm

3 stops34h 25m

Sao Tome Is

Sat 1/24

10:25 pm-8:54 pm

3 stops27h 29m

$2,450

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to São Tomé from

How to get the cheapest flight ticket from Washington, D.C. to São Tomé

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to São Tomé?

Flight times vary depending on what airport in Washington, D.C. you fly out of and what airport in São Tomé you fly into. For example, flying from Washington, D.C. to São Tomé takes 19h 35m on average. On the other hand, flying from Baltimore to São Tomé takes 27h 38m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

When to book flights from Washington, D.C. to São Tomé

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to São Tomé according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to São Tomé (WAS to TMS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to São Tomé

Fastest flight time

19h 35m

Direct flights

None
The fastest flight from Washington, D.C. to São Tomé takes 19h 35m
There are no direct flights from Washington, D.C. to São Tomé. There are no popular flight routes from Washington, D.C. to São Tomé.
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  • How far is Washington, D.C. to Sao Tome Is by plane?

    There are 5864.5 mi between Washington, D.C. and Sao Tome Is. By plane, this route typically takes 19h 35m.

  • When did momondo last update prices for flights from Washington, D.C. to Sao Tome Is Airport?

    Prices for flights from Washington, D.C. to Sao Tome Is Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. to Sao Tome Is Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Sao Tome Is Airport.

  • What documentation or ID do you need to fly to Sao Tome Is Airport?

    The travel and health documents you'll need for your trip to Sao Tome Is Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sao Tome Is Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to São Tomé?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to São Tomé for you.

Can I find flights from Washington, D.C. to São Tomé with flexible booking policies on momondo?

Flights from Washington, D.C. to São Tomé with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to São Tomé?

momondo provides multiple filters to help you find the best flight to São Tomé from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to São Tomé right now. Can momondo alert me if prices change?

Price alerts on flights to São Tomé from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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