How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?

You can take advantage of momondo’s Price Alerts by first searching for your flights to Washington, D.C. Dulles Intl Airport from São Tomé and Príncipe . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe.

What documentation or ID do you need to fly to São Tomé and Príncipe?

The travel and health documents required for your trip to São Tomé and Príncipe can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at São Tomé and Príncipe. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$1,709 Cheap Flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe in 2025/26

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0 bags

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 pm - 6:05 pmIAD-TMS

19h 35m2 stops

8:00 pm - 3:15 pmTMS-IAD

24h 15m2 stops

$1,709TAP AIR PORTUGAL

Find Deal

Sat, Dec 6 - Wed, Dec 10

8:45 am - 6:05 pmIAD-TMS

28h 20m3 stops

8:00 pm - 3:15 pmTMS-IAD

24h 15m2 stops

$1,897TAP AIR PORTUGAL

Find Deal

Sat, Dec 6 - Wed, Dec 10

8:45 am - 6:05 pmIAD-TMS

28h 20m3 stops

8:00 pm - 7:20 amTMS-IAD

40h 20m3 stops

$2,091TAP AIR PORTUGAL

Find Deal

Sat, Dec 6 - Wed, Dec 10

5:30 pm - 6:05 pmIAD-TMS

19h 35m2 stops

8:00 pm - 3:15 pmTMS-IAD

24h 15m2 stops

$2,363TAP AIR PORTUGAL

Find Deal

Sat, Jan 3 - Sun, Jan 18

5:30 pm - 6:05 pmIAD-TMS

19h 35m2 stops

5:00 pm - 7:05 pmTMS-IAD

31h 05m2 stops

$2,655Multiple Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

8:20 am - 6:05 pmIAD-TMS

28h 45m3 stops

8:00 pm - 3:15 pmTMS-IAD

24h 15m2 stops

$2,768TAP AIR PORTUGAL

Find Deal

Sat, Jan 3 - Sun, Jan 18

5:30 pm - 6:05 pmIAD-TMS

19h 35m2 stops

5:00 pm - 7:20 pmTMS-IAD

31h 20m3 stops

$2,886Multiple Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

7:40 pm - 12:10 pmIAD-TMS

35h 30m3 stops

8:00 pm - 8:54 pmTMS-IAD

29h 54m3 stops

$2,990Multiple Airlines

Find Deal

Sat, Jan 3 - Sun, Jan 18

9:00 am - 6:05 pmIAD-TMS

28h 05m2 stops

8:00 pm - 3:15 pmTMS-IAD

24h 15m2 stops

$2,999Multiple Airlines

Find Deal

Sat, Jan 3 - Sun, Jan 18

6:40 pm - 6:05 pmIAD-TMS

18h 25m1 stop

8:00 pm - 5:00 amTMS-IAD

14h 00m1 stop

$3,200Multiple Airlines

Find Deal

Sat, Jan 3 - Sun, Jan 18

TAP AIR PORTUGAL flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

Our best TAP AIR PORTUGAL deals on Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe flight tickets

TAP AIR PORTUGAL

Dec 6

IAD5:30 pmWashington, D.C. Dulles Intl

19h 35m

2 stops

TMS6:05 pmSao Tome Is

Dec 10

TMS8:00 pmSao Tome Is

24h 15m

2 stops

IAD3:15 pmWashington, D.C. Dulles Intl

$1,709

Find similar

TAP AIR PORTUGAL

Dec 6

IAD8:45 amWashington, D.C. Dulles Intl

28h 20m

3 stops

TMS6:05 pmSao Tome Is

Dec 10

TMS8:00 pmSao Tome Is

24h 15m

2 stops

IAD3:15 pmWashington, D.C. Dulles Intl

$1,897

Find similar

TAP AIR PORTUGAL

Dec 6

IAD8:45 amWashington, D.C. Dulles Intl

28h 20m

3 stops

TMS6:05 pmSao Tome Is

Dec 10

TMS8:00 pmSao Tome Is

40h 20m

3 stops

IAD7:20 amWashington, D.C. Dulles Intl

$2,091

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe 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 12/6

5:30 pm-6:05 pm

2 stops19h 35m

Sao Tome Is

Wed 12/10

8:00 pm-3:15 pm

2 stops24h 15m

$1,709

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 12/6

8:45 am-6:05 pm

3 stops28h 20m

Sao Tome Is

Wed 12/10

8:00 pm-3:15 pm

2 stops24h 15m

$1,897

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 12/6

8:45 am-6:05 pm

3 stops28h 20m

Sao Tome Is

Wed 12/10

8:00 pm-7:20 am

3 stops40h 20m

$2,091

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/3

5:30 pm-6:05 pm

2 stops19h 35m

Sao Tome Is

Sun 1/18

8:00 pm-3:15 pm

2 stops24h 15m

$2,363

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 12/2

5:30 pm-6:05 pm

2 stops19h 35m

Sao Tome Is

Tue 12/9

5:00 pm-7:05 pm

2 stops31h 05m

$2,655

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/3

8:20 am-6:05 pm

3 stops28h 45m

Sao Tome Is

Sun 1/18

8:00 pm-3:15 pm

2 stops24h 15m

$2,768

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 12/2

5:30 pm-6:05 pm

2 stops19h 35m

Sao Tome Is

Tue 12/9

5:00 pm-7:20 pm

3 stops31h 20m

$2,886

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/3

7:40 pm-12:10 pm

3 stops35h 30m

Sao Tome Is

Sun 1/18

8:00 pm-8:54 pm

3 stops29h 54m

$2,990

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/3

9:00 am-6:05 pm

2 stops28h 05m

Sao Tome Is

Sun 1/18

8:00 pm-3:15 pm

2 stops24h 15m

$2,999

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 1/3

6:40 pm-6:05 pm

1 stop18h 25m

Sao Tome Is

Sun 1/18

8:00 pm-5:00 am

1 stop14h 00m

$3,200

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe flight deals and tips

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

Direct flights	None

There are no direct flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe.

Search flight deals

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?
Prices for flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe are updated daily.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe.
What documentation or ID do you need to fly to São Tomé and Príncipe?
The travel and health documents required for your trip to São Tomé and Príncipe can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at São Tomé and Príncipe. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Washington, D.C. Dulles Intl Airport from São Tomé and Príncipe. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

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

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 and Príncipe for you.

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

momondo does allow users to show only those flights to São Tomé and Príncipe from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to São Tomé and Príncipe.

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

Yes momondo offers price alerts on flights to São Tomé and Príncipe from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Popular cities in São Tomé and Príncipe

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Washington, D.C. Dulles Intl Airport flight routes

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Cheap flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe from $1,709

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Big names and deals

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Filter for what you want

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

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TAP AIR PORTUGAL flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

Our best TAP AIR PORTUGAL deals on Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe that are best for you.

Cheap Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe flight deals and tips

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

Direct flights

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?

What documentation or ID do you need to fly to São Tomé and Príncipe?

How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe?

How can I save money on flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe with momondo?

How does momondo find its flight prices?

Why use momondo?

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

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

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

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

An easier way to manage your São Tomé and Príncipe trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to São Tomé and Príncipe

Popular cities in São Tomé and Príncipe

Popular flights according to clicks in the last 7 days on momondo