Title: SIN to IAD flights from $458 (Singapore to Washington) - Expedia.com ![Washington DC in Spring](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $458 Cheap Flights from Singapore (SIN) to Washington (IAD) [View $458 flight on Mon, Mar 30, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:SIN,to:IAD,departure:3/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:457.73&airProductToken=AQpkCjAIw4IBEgM5NzAYkmogj1Eo_YGJAzCIhYkDOFBAAFgBagZTVERFQ09yB1BPTkNBUzYKMAjDggESAzgxNxiPUSCIGCjgiYkDMIKRiQM4UEABWAFqBlNUREVDT3IHUE9OQ0FTNhIMCAIQARgCKgJDQTIAGAEiBAgBEAEoAigDKAQwAQ) ## Popular airlines from Singapore Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EK.svg) Emirates [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EK"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_QR.svg) Qatar Airways [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QR"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EY.svg) Etihad Airways [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EY"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TK.svg) Turkish Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:IAD,departure:3/11/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Singapore to Washington (SIN-IAD) Prices were available within the past 7 days and start at $458 for one-way flights and $832 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Air China](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CA.GIF) Thu, Mar 26 - Tue, Apr 7 SIN Singapore IAD Washington $832 Roundtrip found 3 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:3/26/2026TANYT&leg2=from:IAD,to:SIN,departure:4/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:831.93&airProductToken=AQpCCh8Iw4IBEgM5NzAYkmogj1Eom9WIAzCN2IgDOFBAAFgBCh8Iw4IBEgM4MTcYj1EgiBgo4NyIAzCC5IgDOFBAAVgBCkIKHwjDggESAzgxOBiIGCCPUSi04YkDMKvpiQM4UEAAWAEKHwjDggESAzc4NxiPUSCSaiiY7IkDMJnviQM4UEABWAESCggBEAEYASoCQ0EYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 17 - Wed, Mar 18 SIN Singapore IAD Washington $1,069 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:3/17/2026TANYT&leg2=from:IAD,to:SIN,departure:3/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1068.83&airProductToken=AQqlAQo0CNWCARICMjgYkmogsnEonO-HAzCb9ocDOEtAAFgBagoxX2Jhc2ljZWNvcghLRkExUlNCOQo1CNWCARIDNTA1GLJxIIg4KIP3hwMw5viHAzhLQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMVJTQjkKNgjVggESBDE1NDkYiDggiBgoyfmHAzD--ocDOExAAFgBagoxX2Jhc2ljZWNvcghMTFg5UlNCSQptCjYI1YIBEgQyODYyGIgYILJxKLz8hwMwsf-HAzhMQABYAWoKMV9iYXNpY2Vjb3IITExYOVJTQkkKMwjVggESATEYsnEgkmooz4GIAzDkiYgDOExAAFgBagoxX2Jhc2ljZWNvcghMTFg5UlNCSRIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) ![Turkish Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TK.gif) Wed, Mar 25 - Tue, Apr 7 SIN Singapore IAD Washington $1,083 Roundtrip found 3 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:3/25/2026TANYT&leg2=from:IAD,to:SIN,departure:4/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1082.13&airProductToken=AQpECiAI1JYBEgMyMDkYkmogyJwBKJzEiAMw2MmIAzhXQABYAQogCNSWARIDMTg3GMicASCIGCiq0IgDMM3ViAM4V0ABWAEKQgoeCNSWARIBOBiIGCDInAEo6eCJAzDG5YkDOFVAAFgBCiAI1JYBEgMyMDgYyJwBIJJqKMjmiQMwzeuJAzhVQAFYARIKCAEQARgBKgJUSxgBIgQIARABKAQwAQ) ![STARLUX Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/JX.gif) Thu, May 7 - Sat, Sep 5 SIN Singapore IAD Washington $1,113 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:5/7/2026TANYT&leg2=from:IAD,to:SIN,departure:9/5/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1112.33&airProductToken=AQqGAQonCMqwARIDNzcyGJJqIPMjKIipjAMwqquMAzhOQABYAXIGTlNHSlQ3CiYIyrABEgIzMhjzIyCSASj6q4wDMI6xjAM4TkABWAFyBk5TR0pUNwozCMqwARIENzA3MhiSASCIGCjZs4wDMI62jAM4TkABWAFyBk5TR0pUN3oJCMGmARIDMzY3CoYBCjMIyrABEgQ3MDczGIgYIJIBKLaClwMwkoWXAzhOQABYAXIGTlNHSlQ3egkIwaYBEgM3MzcKJgjKsAESAjMxGJIBIPMjKM-GlwMwx4yXAzhOQAFYAXIGTlNHSlQ3CicIyrABEgM3NzEY8yMgkmoogI6XAzCYkJcDOE5AAVgBcgZOU0dKVDcSCggBEAEYASoCSlgYASIECAEQASgCKAQoBjAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, Apr 28 - Tue, May 12 SIN Singapore IAD Washington $1,236 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:4/28/2026TANYT&leg2=from:IAD,to:SIN,departure:5/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1235.13&airProductToken=AQpmCh8IwYYBEgIyMBiSaiC4jQEoxMCLAzCWx4sDOEtAAFgBCiAIwYYBEgIzNBi4jQEgmM4BKN7IiwMw7sqLAzhLQAFYAQohCMGGARIEODYxNhiYzgEgiBgo38uLAzC9zIsDOEdAAVgBCmYKIQjBhgESBDg2MTkYiBggmM4BKPXnjAMwyuiMAzhHQABYAQogCMGGARICMzMYmM4BILiNASik6YwDMMbrjAM4TEABWAEKHwjBhgESAjE5GLiNASCSaiiW7IwDMNvzjAM4TEABWAESCggBEAEYASoCQUMYASIECAEQASgIKAQwAQ) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Mon, Mar 2 - Tue, Mar 10 SIN Singapore IAD Washington $1,241 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:3/2/2026TANYT&leg2=from:IAD,to:SIN,departure:3/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1240.53&airProductToken=AQpnCiEIyIIBEgQ1MzcwGJJqIK2cASjvv4YDMITDhgM4TEAAWAEKIAjIggESAzgyNBitnAEgkgEomsSGAzC7yIYDOE9AAVgBCiAIyIIBEgQ2NzE4GJIBIIgYKNnNhgMwgNCGAzhPQAFYAQpnCiAIyIIBEgQ0OTY3GIgYIJIBKPmehwMw4aGHAzhPQABYAQogCMiCARIDODIzGJIBIK2cASjCo4cDMKSohwM4T0ABWAEKIQjIggESBDUzNjkYrZwBIJJqKKaphwMw8qyHAzhMQAFYARIKCAEQARgBKgJIQRgBIgQIARABKAQwAQ) ![China Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CI.gif) Tue, Apr 14 - Tue, Apr 28 SIN Singapore IAD Washington $1,246 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:4/14/2026TANYT&leg2=from:IAD,to:SIN,departure:4/28/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1245.23&airProductToken=AQqWAQosCMOSARIDNzU2GJJqIPMjKNigigMw_6KKAzhIQABYAWoGWUJBU0lDcgNIU0cKKwjDkgESAjEyGPMjIKlRKISoigMwiK-KAzhIQAFYAWoGWUJBU0lDcgNIU0cKOQjDkgESBDkwODgYqVEgiBgoxrWKAzCltooDOExAAVgBagZZQkFTSUNyA0hTR3oKCMSYARIENTc5OQqWAQo5CMOSARIEOTA5NRiIGCCpUSjay4sDML7MiwM4TEAAWAFqBllCQVNJQ3IDTlNHegoIxJgBEgQ1MDc2CisIw5IBEgIxMRipUSDzIyjbzosDML7WiwM4TkABWAFqBllCQVNJQ3IDTlNHCiwIw5IBEgM3NTMY8yMgkmooxdeLAzDT2YsDOE5AAVgBagZZQkFTSUNyA05TRxIKCAEQARgBKgJDSRgBIgQIARABKAIoBCgGMAE) ![Saudia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SV.gif) Thu, Apr 2 - Sat, Apr 18 SIN Singapore IAD Washington $1,289 Roundtrip found 22 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:4/2/2026TANYT&leg2=from:IAD,to:SIN,departure:4/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1288.45&airProductToken=AQpBCh8I06wBEgM4NTcYkmogiRko7JmJAzCInokDOE5AAFgBCh4I06wBEgIzNRiJGSCIGCi8n4kDMNyliQM4TkABWAEKQQoeCNOsARICMzYYiBggiRkomtuKAzDv4IoDOE5AAFgBCh8I06wBEgM4NTYYiRkgkmooiOaKAzDC6ooDOE5AAVgBEgoIARABGAEqAlNWGAEiBAgBEAEoBDAB) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Fri, May 1 - Thu, May 14 SIN Singapore IAD Washington $1,345 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:5/1/2026TANYT&leg2=from:IAD,to:SIN,departure:5/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1344.53&airProductToken=AQplCjAIwoIBEgIxNhiSaiDriQEo0OmLAzCT8IsDOE9AAFgBagVOT0JBR3IIT05OQzAwQjYKMQjCggESAzI5MxjriQEgiBgoxfWLAzC0-YsDOE9AAVgBagVOT0JBR3IIT05OQzAwQjYKZQoxCMKCARIDMjkyGIgYIOuJASixgY0DMO6EjQM4T0AAWAFqBU5PQkFHcghPTk5DMDBCNgowCMKCARICMTEY64kBIJJqKPGIjQMwpY-NAzhPQAFYAWoFTk9CQUdyCE9OTkMwMEI2EgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Fri, May 8 - Sat, Sep 12 SIN Singapore IAD Washington $1,421 Roundtrip found 5 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SIN,to:IAD,departure:5/8/2026TANYT&leg2=from:IAD,to:SIN,departure:9/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1420.93&airProductToken=AQppCjMIzLABEgMxNzcYkmoguTwo3biMAzDfvowDOEtAAFgBaghFQ09TQVZFUnIIS1gwWERZTkMKMgjMsAESAjcyGLk8IIgYKP7BjAMwvcaMAzhLQAFYAWoIRUNPU0FWRVJyCEtYMFhEWU5DCmkKMgjMsAESAjczGIgYILk8KNTRlwMwudWXAzhLQABYAWoIRUNPU0FWRVJyCEtYMFhEWU5DCjMIzLABEgMxNzYYuTwgkmoomNuXAzCG4ZcDOEtAAVgBaghFQ09TQVZFUnIIS1gwWERZTkMSCggCEAEYAioCTFgYASIECAEQASgCKAMoBDAL) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Washington Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:DCA,departure:3/11/2026TANYT&leg2=from:DCA,to:SIN,departure:3/23/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) DCA Ronald Reagan Washington National Closest 8 min [Flights from $1,153 ](https://www.expedia.com/Flights-Search?leg1=from:SIN,to:DCA,departure:3/11/2026TANYT&leg2=from:DCA,to:SIN,departure:3/23/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) cost? ### What is the cheapest month to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### Which airlines fly direct from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### What is the cheapest airline that flies from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### How do I find cheap flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### What is the best time to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### What is the earliest flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### What are the most popular departure times for flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### How long does it take to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ### Can you fly business or first class from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? > - Swiss International Air Lines > - Malaysia Airlines > - Singapore Airlines > - Etihad Airways > - Lufthansa > - Korean Air > - Emirates > - Batik Air > - All Nippon Airways > - Turkish Airlines > > > First class cabins are available on: > > > - Swiss International Air Lines > - Singapore Airlines > - Emirates > - British Airways > - Lufthansa ### How do I earn miles on a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia? ### What airports do you fly into for Washington from Changi (SIN)? ### Is it cheaper to buy a plane ticket from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute? ### Is it cheaper to book a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)? ## Travel information | Origin airport | Changi | | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Washington Dulles Intl. | | Airlines serving | Air Canada, Air China, Air France, Alaska Airlines, All Nippon Airways, American Airlines, Austrian Airlines, British Airways, Delta, Emirates, Etihad Airways, JetBlue Airways, KLM, Korean Air, Lufthansa, Qatar Airways, STARLUX Airlines, Swiss International Air Lines, Turkish Airlines, United | | Roundtrip price | $832 | | Distance | 9649 mi | ## Book with confidence # Singapore to Washington Flights The cheapest times to fly from Singapore to Washington On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Singapore to Washington are during the month of March. You can find some of the cheapest flights from Singapore to Washington with Expedia's search tool and vast selection of airlines. The best time to book a flight from Singapore to Washington Sunday is one of the best days to book for cheap flights from Singapore to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Singapore to Washington Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Singapore to Washington in 2026\. You can also book with separate airlines for your outbound and return journeys, from $458 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Singapore to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Singapore to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rentals - Other - [Dulles Hotels ](https://www.expedia.com/Dulles-Hotels.d553248635975867357.Travel-Guide-Hotels) - [Gay friendly Hotels in Dulles ](https://www.expedia.com/Dulles-Hotels-LGBT-Welcoming-Hotel.0-0-d553248635975867357-tLGBTWelcomingHotel.Travel-Guide-Filter-Hotels) - [Hotels near Center for Innovative Technology Complex ](https://www.expedia.com/Center-For-Innovative-Technology-Complex-Hotels.0-l6224995-0.Travel-Guide-Filter-Hotels) - [Hotels near Frying Pan Farm Park ](https://www.expedia.com/Frying-Pan-Farm-Park-Hotels.0-l6283542-0.Travel-Guide-Filter-Hotels) - [Hotels near Steven F. 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