Dulles (IAD) to Singapore (SIN) is 15,532 km in a straight line, the equivalent of about 19h 55m in the air; we have not seen a nonstop fare on this pair. The lowest one-way fare seen recently was $591 with Frontier Airlines (3 stops), departing 5 Nov 2026 — as of 8 Oct 2026.

Check fares, see which airlines fly this route, and sort out airports, visas, and what to do at the destination — all before you book.

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When you land in Singapore

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Getting out of Singapore (SIN)

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Things to do in Singapore

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Tours, tickets & day trips

Our pick

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Flights IAD → SIN

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Why travelers watch this route

Fares seen

The lowest one-way fare seen was $591 with Frontier Airlines (3 stops), departing 5 Nov 2026. Checked 8 Oct 2026 — fares move daily.

Seasonality

Singapore demand usually strengthens around February – August, which can push fares higher on this corridor.

Who flies it

We have not confirmed a nonstop carrier on IAD–SIN; most travellers connect through a hub.

Airlines flying Dulles to Singapore

We have not confirmed which airlines fly IAD–SIN nonstop. Search the route to see every carrier selling it today, including connections.

Best time to fly to Singapore

Based on weather and travel conditions in Singapore

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Best monthsGoodAvoid if possible

Singapore is a year-round destination. February–August sees the least rainfall. The northeast monsoon (December–March) brings more rain, but showers are typically short.

Peak season: February – August

Direct & Connecting Flights

We have not seen a nonstop fare between Dulles (IAD) and Singapore (SIN), so most itineraries connect through a hub.

Fares & Price Guide

The lowest one-way fare seen on IAD–SIN was $591 USD (3 stops) as of 8 Oct 2026. Set a fare alert to be told when it drops.

About Singapore, Singapore

Flights arrive at Singapore Changi Airport (SIN). Best visited during February – August. See the destination guide for hotels, visa requirements and travel tips.

Plan this route beyond the fare

Use the wider AirConnect network to move from a route check into airports, airlines, visa, and trip planning.

Search IAD → SIN

See current Dulles to Singapore fares on Trip.com.

Airport Guides

Check terminals, transport and arrival details for IAD and SIN.

Airline Route Maps

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Singapore Planning

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Price Alerts

Track fare drops on IAD–SIN and related city pairs.

Visa Guides

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Explore related route clusters

More routes in this part of the world.

USA routes

Browse more routes from the Dulles side of this corridor.

Singapore routes

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All routes A–Z

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Frequently asked questions — Dulles to Singapore flights

How long is the flight from Dulles to Singapore?

Dulles (IAD) and Singapore (SIN) are 15,532 km apart, about 19h 55m of flying time. We have not seen a nonstop fare on this pair, so expect to connect — the cheapest itinerary seen had 3 stops, which adds to the total journey time.

How far is Dulles from Singapore by air?

The great-circle distance between Washington Dulles International Airport and Singapore Changi Airport is 15,532 km (9,651 miles), a ultra long-haul route.

How much does a flight from Dulles to Singapore cost?

The lowest one-way fare seen recently on IAD–SIN was $591 USD with Frontier Airlines (3 stops), departing 5 Nov 2026, found in fare searches as of 8 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.

Do I need a visa to travel from Dulles to Singapore?

It depends on your passport. Some nationalities can enter Singapore visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.

What is the best time to visit Singapore?

Singapore is a year-round destination. February–August sees the least rainfall. The northeast monsoon (December–March) brings more rain, but showers are typically short.

Sources: fares from Travelpayouts flight-search data, seen 8 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.

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