S$ 427 Find Cheap Flights from Washington to Southeast Asia

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Southeast Asia.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Washington to Southeast Asia with an airline and back with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Based on KAYAK data, the cheapest day to fly to Southeast Asia is Tuesday when return tickets can be as cheap as S$ 1,455. On the other hand, the most expensive day to fly is Tuesday, when return prices are S$ 1,455 on average.

The cheapest time of day to fly to Southeast Asia is generally in the morning, when round-trip flights cost S$ 1,109 on average. The most expensive time of day to fly to Southeast Asia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is S$ 1,448.

The cheapest ticket to Southeast Asia from Washington found in the last 72 hours was to Manila, at S$ 909 return. The most popular route is Seattle (SEA) to Manila (MNL) and the cheapest return airline ticket found on this route in the last 72 hours was S$ 909.

The cheapest month for flights from Washington to Southeast Asia is February, when tickets cost S$ 1,076 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is S$ 1,752 and S$ 1,697 respectively.

To get a below-average price on the flight from Washington to Southeast Asia, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

An average direct flight from Washington to Southeast Asia takes 19h 55m, covering a distance of 21072 km. The shortest route is Seattle (SEA) to Singapore (SIN) with an average flight time of 16h 20m.

Based on KAYAK flight searches, the most popular destination is Singapore (100% of total searches to Southeast Asia).