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Cheap flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe from $1,139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe departing on 9/1. 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. Dulles Intl Airport to São Tomé and Príncipe

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:20 pm - 5:45 pm
IAD
-
TMS
39h 25m
3 stops
Multiple Airlines Logo
7:40 pm - 8:40 pm
TMS
-
IAD
29h 00m
3 stops
$2,296Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
10:20 pm - 5:45 pm
IAD
-
TMS
39h 25m
3 stops
Multiple Airlines Logo
7:40 pm - 3:15 pm
TMS
-
IAD
23h 35m
2 stops
$2,315Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
TAP AIR PORTUGAL Logo
5:05 pm - 5:25 pm
IAD
-
TMS
20h 20m
1 stop
TAP AIR PORTUGAL Logo
7:40 pm - 3:10 pm
TMS
-
IAD
23h 30m
2 stops
$2,892TAP AIR PORTUGAL
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
3:45 pm - 5:25 pm
IAD
-
TMS
21h 40m
2 stops
Multiple Airlines Logo
7:40 pm - 3:15 pm
TMS
-
IAD
23h 35m
2 stops
$2,895Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Ethiopian Air Logo
10:55 am - 5:40 pm
IAD
-
TMS
26h 45m
3 stops
Ethiopian Air Logo
7:00 am - 8:55 am
TMS
-
IAD
29h 55m
4 stops
$3,031Ethiopian Air
Fri, Jun 12 - Fri, Jun 19

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe 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 May 16, 2026.
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

Cheapest round-trip

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 6/12

10:20 pm-5:45 pm

3 stops39h 25m

Sao Tome Is

Fri 6/19

7:40 pm-8:40 pm

3 stops29h 00m

$2,296

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 6/12

10:20 pm-5:45 pm

3 stops39h 25m

Sao Tome Is

Fri 6/19

7:40 pm-3:15 pm

2 stops23h 35m

$2,315
Quickest round-trip

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 6/12

5:05 pm-5:25 pm

1 stop20h 20m

Sao Tome Is

Fri 6/19

7:40 pm-3:10 pm

2 stops23h 30m

$2,892

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 6/12

3:45 pm-5:25 pm

2 stops21h 40m

Sao Tome Is

Fri 6/19

7:40 pm-3:15 pm

2 stops23h 35m

$2,895

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 6/12

10:55 am-5:40 pm

3 stops26h 45m

Sao Tome Is

Fri 6/19

7:00 am-8:55 am

4 stops29h 55m

$3,031
Cheapest one-way

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 9/1

10:19 pm-5:45 pm

3 stops63h 26m

$1,139

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 9/1

9:00 pm-5:40 pm

2 stops40h 40m

$1,265
Quickest one-way

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 9/1

5:05 pm-5:45 pm

1 stop20h 40m

$1,359

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to São Tomé and Príncipe from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to São Tomé and Príncipe?

TAP AIR PORTUGAL is the most popular carrier operating from Washington, D.C. Dulles Intl to São Tomé and Príncipe

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

Fastest flight time

39h 25m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe takes 39h 25m
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

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

  • 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.

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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Find better results for your trip to São Tomé and Príncipe

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Popular flights according to clicks in the last 7 days on momondo
Flights to São Toméfrom $1,361