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Cheap flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe from $1,836

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. Dulles Intl Airport to São Tomé and Príncipe departing on 11/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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.
Turkish Airlines Logo
9:20 pm - 6:15 pm
IAD
-
TMS
63h 55m
3 stops
Turkish Airlines Logo
8:00 pm - 7:25 pm
TMS
-
IAD
52h 25m
3 stops
$1,836Turkish Airlines
Sun, Nov 22 - Sun, Nov 29
Ethiopian Air Logo
10:55 am - 5:40 pm
IAD
-
TMS
26h 45m
3 stops
Ethiopian Air Logo
7:00 am - 9:00 am
TMS
-
IAD
30h 00m
4 stops
$2,015Ethiopian Air
Fri, Oct 23 - Thu, Oct 29
Multiple Airlines Logo
10:55 am - 5:40 pm
IAD
-
TMS
26h 45m
3 stops
Multiple Airlines Logo
7:00 am - 9:00 am
TMS
-
IAD
30h 00m
3 stops
$2,103Multiple Airlines
Fri, Oct 23 - Thu, Oct 29
TAP AIR PORTUGAL Logo
8:37 am - 6:15 pm
IAD
-
TMS
28h 38m
3 stops
TAP AIR PORTUGAL Logo
8:00 pm - 3:15 pm
TMS
-
IAD
24h 15m
2 stops
$2,124TAP AIR PORTUGAL
Sat, Nov 21 - Sun, Nov 29
TAP AIR PORTUGAL Logo
8:37 am - 6:15 pm
IAD
-
TMS
28h 38m
3 stops
TAP AIR PORTUGAL Logo
8:00 pm - 11:00 pm
TMS
-
IAD
56h 00m
3 stops
$2,259TAP AIR PORTUGAL
Sat, Nov 21 - Sun, Nov 29
Multiple Airlines Logo
5:25 pm - 6:15 pm
IAD
-
TMS
19h 50m
2 stops
Multiple Airlines Logo
6:20 pm - 3:15 pm
TMS
-
IAD
25h 55m
2 stops
$2,284Multiple Airlines
Sat, Nov 21 - Sun, Nov 29
Multiple Airlines Logo
6:45 pm - 6:15 pm
IAD
-
TMS
18h 30m
1 stop
Multiple Airlines Logo
8:00 pm - 3:15 pm
TMS
-
IAD
24h 15m
2 stops
$2,297Multiple Airlines
Sat, Nov 21 - Sun, Nov 29
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
$2,445TAP AIR PORTUGAL
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
10:55 am - 5:40 pm
IAD
-
TMS
26h 45m
3 stops
Multiple Airlines Logo
4:15 pm - 8:55 am
TMS
-
IAD
44h 40m
3 stops
$2,464Multiple Airlines
Fri, Jul 31 - Fri, Aug 7
Multiple Airlines Logo
9:40 pm - 5:40 pm
IAD
-
TMS
40h 00m
3 stops
Multiple Airlines Logo
4:15 pm - 8:55 am
TMS
-
IAD
44h 40m
3 stops
$2,567Multiple Airlines
Mon, Jul 27 - Fri, Aug 7

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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
TAP AIR PORTUGAL
Nov 21
IAD8:37 amWashington, D.C. Dulles Intl
28h 38m
3 stops
TMS6:15 pmSao Tome Is
Nov 29
TMS8:00 pmSao Tome Is
24h 15m
2 stops
IAD3:15 pmWashington, D.C. Dulles Intl
$2,124
TAP AIR PORTUGAL
Nov 21
IAD8:37 amWashington, D.C. Dulles Intl
28h 38m
3 stops
TMS6:15 pmSao Tome Is
Nov 29
TMS8:00 pmSao Tome Is
56h 00m
3 stops
IAD11:00 pmWashington, D.C. Dulles Intl
$2,259
TAP AIR PORTUGAL
Aug 14
IAD5:05 pmWashington, D.C. Dulles Intl
20h 20m
1 stop
TMS5:25 pmSao Tome Is
Aug 21
TMS7:40 pmSao Tome Is
23h 30m
2 stops
IAD3:10 pmWashington, D.C. Dulles Intl
$2,445

Ethiopian Air flights from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe

Our best Ethiopian Air deals on Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe flight tickets
Ethiopian Air
Oct 23
IAD10:55 amWashington, D.C. Dulles Intl
26h 45m
3 stops
TMS5:40 pmSao Tome Is
Oct 29
TMS7:00 amSao Tome Is
30h 00m
4 stops
IAD9:00 amWashington, D.C. Dulles Intl
$2,015
Ethiopian Air
Jul 7
IAD10:55 amWashington, D.C. Dulles Intl
26h 45m
2 stops
TMS5:40 pmSao Tome Is
Jul 9
TMS7:00 amSao Tome Is
29h 55m
4 stops
IAD8:55 amWashington, D.C. Dulles Intl
$3,098
Ethiopian Air
Jul 7
IAD10:55 amWashington, D.C. Dulles Intl
26h 45m
3 stops
TMS5:40 pmSao Tome Is
Jul 9
TMS7:00 amSao Tome Is
29h 55m
4 stops
IAD8:55 amWashington, D.C. Dulles Intl
$3,478

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 July 4, 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

Sun 11/22

9:20 pm-6:15 pm

3 stops63h 55m

Sao Tome Is

Sun 11/29

8:00 pm-7:25 pm

3 stops52h 25m

$1,836

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 10/23

10:55 am-5:40 pm

3 stops26h 45m

Sao Tome Is

Thu 10/29

7:00 am-9:00 am

4 stops30h 00m

$2,015

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 10/23

10:55 am-5:40 pm

3 stops26h 45m

Sao Tome Is

Thu 10/29

7:00 am-9:00 am

3 stops30h 00m

$2,103

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 11/21

8:37 am-6:15 pm

3 stops28h 38m

Sao Tome Is

Sun 11/29

8:00 pm-3:15 pm

2 stops24h 15m

$2,124

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 11/21

8:37 am-6:15 pm

3 stops28h 38m

Sao Tome Is

Sun 11/29

8:00 pm-11:00 pm

3 stops56h 00m

$2,259

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 11/21

5:25 pm-6:15 pm

2 stops19h 50m

Sao Tome Is

Sun 11/29

6:20 pm-3:15 pm

2 stops25h 55m

$2,284
Quickest round-trip

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 11/21

6:45 pm-6:15 pm

1 stop18h 30m

Sao Tome Is

Sun 11/29

8:00 pm-3:15 pm

2 stops24h 15m

$2,297

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 8/14

5:05 pm-5:25 pm

1 stop20h 20m

Sao Tome Is

Fri 8/21

7:40 pm-3:10 pm

2 stops23h 30m

$2,445

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 7/31

10:55 am-5:40 pm

3 stops26h 45m

Sao Tome Is

Fri 8/7

4:15 pm-8:55 am

3 stops44h 40m

$2,464

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 7/27

9:40 pm-5:40 pm

3 stops40h 00m

Sao Tome Is

Fri 8/7

4:15 pm-8:55 am

3 stops44h 40m

$2,567

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

Fastest flight time

26h 45m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to São Tomé and Príncipe takes 26h 45m
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.
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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.

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport 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?

    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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Flights to São Toméfrom $2,015