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Cheap flights from Washington, D.C. to São Tomé from $1,965

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 5/18. 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.
Multiple Airlines Logo
5:35 pm - 5:45 pm
IAD
-
TMS
44h 10m
3 stops
Multiple Airlines Logo
9:35 pm - 8:00 pm
TMS
-
IAD
26h 25m
2 stops
$1,965Multiple Airlines
Mon, May 18 - Sat, May 30
Multiple Airlines Logo
9:40 pm - 5:40 pm
IAD
-
TMS
16h 00m
2 stops
Multiple Airlines Logo
1:10 pm - 8:55 am
TMS
-
IAD
47h 45m
3 stops
$1,969Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
10:55 am - 5:40 pm
IAD
-
TMS
26h 45m
3 stops
Multiple Airlines Logo
1:10 pm - 8:55 am
TMS
-
IAD
47h 45m
3 stops
$2,013Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
TAP AIR PORTUGAL Logo
5:05 pm - 5:45 pm
IAD
-
TMS
20h 40m
2 stops
TAP AIR PORTUGAL Logo
9:35 pm - 3:10 pm
TMS
-
IAD
21h 35m
1 stop
$2,079TAP AIR PORTUGAL
Tue, May 19 - Sat, May 30
Multiple Airlines Logo
10:35 pm - 5:45 pm
IAD
-
TMS
39h 10m
2 stops
Multiple Airlines Logo
1:10 pm - 3:10 pm
TMS
-
IAD
30h 00m
2 stops
$2,115Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
10:30 pm - 5:45 pm
IAD
-
TMS
39h 15m
2 stops
Multiple Airlines Logo
9:35 pm - 8:00 pm
TMS
-
IAD
26h 25m
2 stops
$2,146Multiple Airlines
Mon, May 18 - Sat, May 30
TAP AIR PORTUGAL Logo
10:35 pm - 5:45 pm
IAD
-
TMS
39h 10m
2 stops
TAP AIR PORTUGAL Logo
9:35 pm - 8:35 pm
TMS
-
IAD
27h 00m
1 stop
$2,177TAP AIR PORTUGAL
Mon, May 18 - Sat, May 30
Multiple Airlines Logo
9:45 am - 5:45 pm
IAD
-
TMS
28h 00m
3 stops
Multiple Airlines Logo
9:35 pm - 7:15 pm
TMS
-
IAD
25h 40m
2 stops
$2,261Multiple Airlines
Tue, May 19 - Sat, May 30
Multiple Airlines Logo
9:45 am - 5:45 pm
IAD
-
TMS
28h 00m
3 stops
Multiple Airlines Logo
9:35 pm - 10:56 pm
TMS
-
IAD
29h 21m
3 stops
$2,380Multiple Airlines
Tue, May 19 - Sat, May 30
Multiple Airlines Logo
10:05 pm - 5:45 pm
IAD
-
TMS
63h 40m
3 stops
Multiple Airlines Logo
9:35 pm - 3:15 pm
TMS
-
IAD
21h 40m
1 stop
$2,409Multiple Airlines
Tue, May 19 - Sat, May 30

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
May 19
IAD5:05 pmWashington, D.C. Dulles Intl
20h 40m
2 stops
TMS5:45 pmSao Tome Is
May 30
TMS9:35 pmSao Tome Is
21h 35m
1 stop
IAD3:10 pmWashington, D.C. Dulles Intl
$2,079
TAP AIR PORTUGAL
May 18
IAD10:35 pmWashington, D.C. Dulles Intl
39h 10m
2 stops
TMS5:45 pmSao Tome Is
May 30
TMS9:35 pmSao Tome Is
27h 00m
1 stop
IAD8:35 pmWashington, D.C. Dulles Intl
$2,177

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 March 10, 2026.
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

Cheapest round-trip

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 5/18

5:35 pm-5:45 pm

3 stops44h 10m

Sao Tome Is

Sat 5/30

9:35 pm-8:00 pm

2 stops26h 25m

$1,965

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 4/20

9:40 pm-5:40 pm

2 stops16h 00m

Sao Tome Is

Mon 4/27

1:10 pm-8:55 am

3 stops47h 45m

$1,969

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 4/20

10:55 am-5:40 pm

3 stops26h 45m

Sao Tome Is

Mon 4/27

1:10 pm-8:55 am

3 stops47h 45m

$2,013
Quickest round-trip

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 5/19

5:05 pm-5:45 pm

2 stops20h 40m

Sao Tome Is

Sat 5/30

9:35 pm-3:10 pm

1 stop21h 35m

$2,079

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 4/20

10:35 pm-5:45 pm

2 stops39h 10m

Sao Tome Is

Mon 4/27

1:10 pm-3:10 pm

2 stops30h 00m

$2,115

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 5/18

10:30 pm-5:45 pm

2 stops39h 15m

Sao Tome Is

Sat 5/30

9:35 pm-8:00 pm

2 stops26h 25m

$2,146

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 5/18

10:35 pm-5:45 pm

2 stops39h 10m

Sao Tome Is

Sat 5/30

9:35 pm-8:35 pm

1 stop27h 00m

$2,177

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 5/19

9:45 am-5:45 pm

3 stops28h 00m

Sao Tome Is

Sat 5/30

9:35 pm-7:15 pm

2 stops25h 40m

$2,261

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 5/19

9:45 am-5:45 pm

3 stops28h 00m

Sao Tome Is

Sat 5/30

9:35 pm-10:56 pm

3 stops29h 21m

$2,380

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Tue 5/19

10:05 pm-5:45 pm

3 stops63h 40m

Sao Tome Is

Sat 5/30

9:35 pm-3:15 pm

1 stop21h 40m

$2,409

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 20h 40m on average. On the other hand, flying from Baltimore to São Tomé takes 34h 35m 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

20h 40m

Direct flights

None
The fastest flight from Washington, D.C. to São Tomé takes 20h 40m
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.
Search flight deals

  • 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 20h 40m.

  • 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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