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Cheap flights from Washington, D.C. to São Tomé from $1,648

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 11/7. 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. to São Tomé

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
5:25 pm - 6:15 pm
IAD
-
TMS
19h 50m
2 stops
TAP AIR PORTUGAL Logo
10:25 pm - 8:35 pm
TMS
-
IAD
27h 10m
1 stop
$1,648TAP AIR PORTUGAL
Sat, Nov 7 - Sat, Nov 14
TAP AIR PORTUGAL Logo
10:50 pm - 5:45 pm
IAD
-
TMS
38h 55m
2 stops
TAP AIR PORTUGAL Logo
7:40 pm - 8:05 pm
TMS
-
IAD
28h 25m
2 stops
$1,774TAP AIR PORTUGAL
Fri, Sep 25 - Fri, Oct 9
Multiple Airlines Logo
8:10 pm - 6:15 pm
IAD
-
TMS
65h 05m
3 stops
Multiple Airlines Logo
10:25 pm - 3:40 pm
TMS
-
IAD
22h 15m
1 stop
$1,801Multiple Airlines
Sun, Nov 8 - Sat, Nov 14
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
$1,803TAP AIR PORTUGAL
Fri, Sep 25 - Fri, Oct 9
Multiple Airlines Logo
8:10 pm - 6:15 pm
IAD
-
TMS
65h 05m
3 stops
Multiple Airlines Logo
10:25 pm - 3:30 pm
TMS
-
IAD
46h 05m
2 stops
$1,805Multiple Airlines
Sun, Nov 8 - Sat, Nov 14
Multiple Airlines Logo
5:17 pm - 5:45 pm
IAD
-
TMS
44h 28m
3 stops
Multiple Airlines Logo
7:40 pm - 4:05 pm
TMS
-
IAD
24h 25m
3 stops
$1,926Multiple Airlines
Fri, Sep 25 - Fri, Oct 9
TAP AIR PORTUGAL Logo
12:37 pm - 6:15 pm
IAD
-
TMS
48h 38m
3 stops
TAP AIR PORTUGAL Logo
8:00 pm - 3:15 pm
TMS
-
IAD
24h 15m
2 stops
$1,981TAP AIR PORTUGAL
Mon, Nov 9 - Sun, Nov 15
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
$1,994TAP AIR PORTUGAL
Sat, Nov 7 - Sun, Nov 15
Multiple Airlines Logo
3:45 pm - 5:25 pm
IAD
-
TMS
21h 40m
2 stops
Multiple Airlines Logo
7:40 pm - 4:05 pm
TMS
-
IAD
24h 25m
3 stops
$2,039Multiple Airlines
Fri, Sep 25 - Fri, Oct 9
TAP AIR PORTUGAL Logo
5:51 pm - 6:15 pm
IAD
-
TMS
43h 24m
3 stops
TAP AIR PORTUGAL Logo
10:25 pm - 8:35 pm
TMS
-
IAD
27h 10m
1 stop
$2,145TAP AIR PORTUGAL
Mon, Nov 9 - Sat, Nov 14

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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
Nov 7
IAD5:25 pmWashington, D.C. Dulles Intl
19h 50m
2 stops
TMS6:15 pmSao Tome Is
Nov 14
TMS10:25 pmSao Tome Is
27h 10m
1 stop
IAD8:35 pmWashington, D.C. Dulles Intl
$1,648
TAP AIR PORTUGAL
Sep 25
IAD10:50 pmWashington, D.C. Dulles Intl
38h 55m
2 stops
TMS5:45 pmSao Tome Is
Oct 9
TMS7:40 pmSao Tome Is
28h 25m
2 stops
IAD8:05 pmWashington, D.C. Dulles Intl
$1,774
TAP AIR PORTUGAL
Sep 25
IAD5:05 pmWashington, D.C. Dulles Intl
20h 20m
1 stop
TMS5:25 pmSao Tome Is
Oct 9
TMS7:40 pmSao Tome Is
23h 30m
2 stops
IAD3:10 pmWashington, D.C. Dulles Intl
$1,803

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 July 23, 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

Sat 11/7

5:25 pm-6:15 pm

2 stops19h 50m

Sao Tome Is

Sat 11/14

10:25 pm-8:35 pm

1 stop27h 10m

$1,648

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 9/25

10:50 pm-5:45 pm

2 stops38h 55m

Sao Tome Is

Fri 10/9

7:40 pm-8:05 pm

2 stops28h 25m

$1,774

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sun 11/8

8:10 pm-6:15 pm

3 stops65h 05m

Sao Tome Is

Sat 11/14

10:25 pm-3:40 pm

1 stop22h 15m

$1,801
Quickest round-trip

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 9/25

5:05 pm-5:25 pm

1 stop20h 20m

Sao Tome Is

Fri 10/9

7:40 pm-3:10 pm

2 stops23h 30m

$1,803

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sun 11/8

8:10 pm-6:15 pm

3 stops65h 05m

Sao Tome Is

Sat 11/14

10:25 pm-3:30 pm

2 stops46h 05m

$1,805

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 9/25

5:17 pm-5:45 pm

3 stops44h 28m

Sao Tome Is

Fri 10/9

7:40 pm-4:05 pm

3 stops24h 25m

$1,926

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 11/9

12:37 pm-6:15 pm

3 stops48h 38m

Sao Tome Is

Sun 11/15

8:00 pm-3:15 pm

2 stops24h 15m

$1,981

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Sat 11/7

8:37 am-6:15 pm

3 stops28h 38m

Sao Tome Is

Sun 11/15

8:00 pm-3:15 pm

2 stops24h 15m

$1,994

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Fri 9/25

3:45 pm-5:25 pm

2 stops21h 40m

Sao Tome Is

Fri 10/9

7:40 pm-4:05 pm

3 stops24h 25m

$2,039

Washington, D.C.São Tomé

IAD - TMS

IADTMS

Washington, D.C. Dulles Intl

Mon 11/9

5:51 pm-6:15 pm

3 stops43h 24m

Sao Tome Is

Sat 11/14

10:25 pm-8:35 pm

1 stop27h 10m

$2,145

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 Baltimore to São Tomé takes 34h 35m on average. On the other hand, flying from Washington, D.C. to São Tomé takes 38h 45m 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

34h 35m

Direct flights

None
The fastest flight from Washington, D.C. to São Tomé takes 34h 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.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to São Tomé

  • 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 34h 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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