Title: $511 Cheap flights from Washington to Hanoi (DCA to HAN) - Expedia.com ![](https://images.trvl-media.com/place/1428/0858488b-22dd-4cd9-b109-243dbd5e6d6b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/1428/0858488b-22dd-4cd9-b109-243dbd5e6d6b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $511 Cheap Flights from Washington (DCA) to Hanoi (HAN) [View $511 flight on Mon, Mar 9, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DCA,to:HAN,departure:3/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:510.40&airProductToken=AQqrAQoxCMGmARIBNxhDILJxKKOZhwMwn5yHAzhOQABYAWoJRUNPTkxJR0hUcghOSzIxVVNJTwo0CMOwARIDODczGLJxIMcyKP-chwMwl6SHAzhOQAFYAWoJRUNPTkxJR0hUcghOSzIxVVNJTwpACMOwARIENjI2MxjHMiCHaCiGqIcDMIiphwM4TkABWAFqCUVDT05MSUdIVHIITksyMVVTSU96CQjWnAESAzU5MxIKCAEQARgBKgJDWBgBIgQIARABKAIoBCgGMAE) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN) - ![](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:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&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_CX.svg) Cathay Pacific [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"CX"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_JL.svg) Japan Airlines [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"JL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KE.svg) Korean Air [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KE"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](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 Washington to Hanoi (DCA-HAN) Prices were available within the past 7 days and start at $511 for one-way flights and $961 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Aug 19 - Sun, Sep 6 DCA Washington HAN Hanoi $961 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:8/19/2026TANYT&leg2=from:HAN,to:DCA,departure:9/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:960.53&airProductToken=AQpmCiAIxJgBEgQxNTU4GEMg47QBKOi-lQMwy7-VAzhFQABYAQogCMSYARIDMTU5GOO0ASDIaCiIwJUDMP3GlQM4RUABWAEKIAjEmAESBDc4MDcYyGggh2gok8iVAzCrypUDOEVAAVgBCmMKIAjEmAESBDc4MDgYh2ggyGgoqoqXAzCpjJcDOEVAAFgBCh8IxJgBEgMxODgYyGgg4FwovZGXAzD-l5cDOEVAAVgBCh4IxJgBEgM3MjcY4FwgQyiCmZcDMPGZlwM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Korean Air](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/ke.gif) Thu, Apr 9 - Mon, Apr 20 DCA Washington HAN Hanoi $966 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:4/9/2026TANYT&leg2=from:HAN,to:DCA,departure:4/20/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:965.93&airProductToken=AQpiCh8Iy4oBEgQ1Mzk3GEMg4Fwo8vGJAzDl8okDOFRAAFgBCh4Iy4oBEgIzNhjgXCDIaCi184kDMNL6iQM4VEABWAEKHwjLigESAzQ0NxjIaCCHaCiT-4kDMKv9iQM4VEABWAEKZAofCMuKARIDNDQ4GIdoIMhoKMruigMwyfCKAzhUQABYAQofCMuKARICOTEYyGggwZMBKL7yigMw_PiKAzhUQAFYAQogCMuKARIEMzMwNxjBkwEgQyj--YoDMPH6igM4VEABWAESCggBEAEYASoCS0UYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Aug 11 - Wed, Aug 26 DCA Washington HAN Hanoi $972 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:8/11/2026TANYT&leg2=from:HAN,to:DCA,departure:8/26/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:971.73&airProductToken=AQplCh4I1YIBEgMzNjkYQyCycSjm45QDMMTmlAM4TEAAWAEKIAjVggESAzgzNxiycSCtnAEoreeUAzCo7JQDOExAAVgBCiEI1YIBEgQ3OTE3GK2cASCHaCj67ZQDMNPwlAM4TEABWAEKZgohCNWCARIENzkyMRiHaCCtnAEo446WAzCjkZYDOExAAFgBCiAI1YIBEgM4MzgYrZwBILJxKIWWlgMwxJqWAzhMQAFYAQofCNWCARIEMjM4NhiycSBDKIKclgMwsZ6WAzhMQAFYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Aug 21 - Sun, Sep 6 DCA Washington HAN Hanoi $1,001 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:8/21/2026TANYT&leg2=from:HAN,to:DCA,departure:9/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1000.53&airProductToken=AQpmCiAIxJgBEgQxNTU4GEMg47QBKKjVlQMwi9aVAzhFQABYAQogCMSYARIDMTU5GOO0ASDIaCjI1pUDML3dlQM4RUABWAEKIAjEmAESBDc4MDcYyGggh2go096VAzDr4JUDOEVAAVgBCmMKIAjEmAESBDc4MDgYh2ggyGgoqoqXAzCpjJcDOEVAAFgBCh8IxJgBEgMxODgYyGgg4FwovZGXAzD-l5cDOEVAAVgBCh4IxJgBEgM3MjcY4FwgQyiCmZcDMPGZlwM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![All Nippon Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NH.gif) Wed, Aug 5 - Wed, Sep 2 DCA Washington HAN Hanoi $1,004 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:8/5/2026TANYT&leg2=from:HAN,to:DCA,departure:9/2/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1003.73&airProductToken=AQqsAQo_CM6QARIENzcwNRhDIK4cKIqhlAMwlqKUAzhMQABYAWoIRUNPQkFTSUNyCExMWDA3SEJIegoI1YIBEgQyNzc0CjMIzpABEgIxMRiuHCCtnAEo0qKUAzDyqJQDOExAAVgBaghFQ09CQVNJQ3IITExYMDdIQkgKNAjOkAESAzg5NxitnAEgh2gouqqUAzCTrZQDOExAAVgBaghFQ09CQVNJQ3IITExYMDdIQkgKrAEKNAjOkAESAzg5OBiHaCCtnAEow92WAzCD4JYDOExAAFgBaghFQ09CQVNJQ3IITExYMDdIQkgKMwjOkAESAjEyGK2cASCuHCjg5JYDMKvqlgM4TEABWAFqCEVDT0JBU0lDcghMTFgwN0hCSAo_CM6QARIENzU2MBiuHCBDKKjrlgMwquyWAzhMQAFYAWoIRUNPQkFTSUNyCExMWDA3SEJIegoI1YIBEgQyNzYxEgoIARABGAEqAk5IGAEiBAgBEAEoAigDKAQwAQ) ![Korean Air](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/ke.gif) Thu, Apr 23 - Fri, May 1 DCA Washington HAN Hanoi $1,006 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:4/23/2026TANYT&leg2=from:HAN,to:DCA,departure:5/1/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1005.93&airProductToken=AQqnAQo-CMuKARIENzMyNBhDIKlRKLiNiwMwiI6LAzhUQABYAWoHRVlTQVZFUnIIVExYMDdOQlp6CgjEmAESBDUyMzQKMQjLigESAjgyGKlRIMhoKPCQiwMwkpiLAzhUQAFYAWoHRVlTQVZFUnIIVExYMDdOQloKMgjLigESAzQ0NxjIaCCHaCjTmIsDMOuaiwM4VEABWAFqB0VZU0FWRVJyCFRMWDA3TkJaCqcBCjIIy4oBEgM0NDgYh2ggyGgoquqLAzCp7IsDOFRAAFgBagdFWVNBVkVScghUTFcwN05CWgoxCMuKARICODEYyGggqVEovO6LAzCO9YsDOFRAAVgBagdFWVNBVkVScghUTFcwN05CWgo-CMuKARIEMzkwOBipUSBDKKX3iwMwjPiLAzhUQAFYAWoHRVlTQVZFUnIIVExXMDdOQlp6CgjEmAESBDU2OTkSCggBEAEYASoCS0UYASIECAEQASgCKAQoBjAB) ![All Nippon Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NH.gif) Sun, Aug 9 - Wed, Aug 26 DCA Washington HAN Hanoi $1,011 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:8/9/2026TANYT&leg2=from:HAN,to:DCA,departure:8/26/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1010.33&airProductToken=AQpkCh8IzpABEgQ3NTU5GEMgrhwo8tCUAzCA0pQDOExAAFgBCh8IzpABEgIxMRiuHCCtnAEo8tqUAzCS4ZQDOExAAVgBCiAIzpABEgM4OTcYrZwBIIdoKNrilAMws-WUAzhMQAFYAQpkCiAIzpABEgM4OTgYh2ggrZwBKOOOlgMwo5GWAzhMQABYAQofCM6QARICMTIYrZwBIK4cKICWlgMwy5uWAzhMQAFYAQofCM6QARIENzU2MBiuHCBDKMiclgMwyp2WAzhMQAFYARIKCAEQARgBKgJOSBgBIgQIARABKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Sep 1 - Wed, Sep 16 DCA Washington HAN Hanoi $1,011 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:9/1/2026TANYT&leg2=from:HAN,to:DCA,departure:9/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1010.53&airProductToken=AQqwAQo1CMSYARIEMTU1OBhDIOO0ASiI0ZYDMOvRlgM4VkAAWAFqCU1BSU5DTEFTQ3IIVkxYMDdOTTAKNQjEmAESAzE1ORjjtAEgyGgomdKWAzCd2ZYDOFZAAVgBaglNQUlOQ0xBU0NyCFZMWDA3Tk0wCkAIxJgBEgQ3ODA3GMhoIIdoKLPalgMwy9yWAzhWQAFYAWoJTUFJTkNMQVNDcghWTFgwN05NMHoJCMuKARIDNDQ3CrABCkAIxJgBEgQ3ODA4GIdoIMhoKOr6lwMw6fyXAzhWQABYAWoJTUFJTkNMQVNDcghWTFgwN05NMHoJCMuKARIDNDQ4CjUIxJgBEgMxNTgYyGgg47QBKIv_lwMwl4WYAzhWQAFYAWoJTUFJTkNMQVNDcghWTFgwN05NMAo1CMSYARIEMTQ1NBjjtAEgQyivh5gDMI2ImAM4VkABWAFqCU1BSU5DTEFTQ3IIVkxYMDdOTTASCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Aug 12 - Thu, Sep 3 DCA Washington HAN Hanoi $1,012 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:8/12/2026TANYT&leg2=from:HAN,to:DCA,departure:9/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1011.73&airProductToken=AQpnCh8I1YIBEgQyNzc0GEMgrhwo6u-UAzD28JQDOExAAFgBCiEI1YIBEgQ3OTM4GK4cIK2cASiy8ZQDMNL3lAM4TEABWAEKIQjVggESBDc5MTcYrZwBIIdoKJr5lAMw8_uUAzhMQAFYAQpmCiEI1YIBEgQ3OTIxGIdoIK2cASjj6JYDMKPrlgM4TEAAWAEKIAjVggESAzgzOBitnAEgsnEohfCWAzDE9JYDOExAAVgBCh8I1YIBEgQyMzg2GLJxIEMogvaWAzCx-JYDOExAAVgBEgoIARABGAEqAlVBGAEiBAgBEAEoBDAB) ![Cathay Pacific](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CX.gif) Wed, Sep 23 - Wed, Oct 7 DCA Washington HAN Hanoi $1,012 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HAN,departure:9/23/2026TANYT&leg2=from:HAN,to:DCA,departure:10/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1011.83&airProductToken=AQqwAQpBCMOwARIENzY0NxhDIKOxASiGzZgDMMrOmAM4TkAAWAFqCUVDT05MSUdIVHIITksyMVVTSVJ6CgjBggESBDExNTgKNQjDsAESAzg3NRijsQEgxzIoi8-YAzCW15gDOE5AAVgBaglFQ09OTElHSFRyCE5LMjFVU0lSCjQIw7ABEgM3NDEYxzIgh2go7diYAzDv2ZgDOE5AAVgBaglFQ09OTElHSFRyCE5LMjFVU0lSCrABCjQIw7ABEgM3NDAYh2ggxzIoq-GZAzCt4pkDOE5AAFgBaglFQ09OTElHSFRyCE5LMjFVU0lSCjUIw7ABEgM4NzYYxzIgo7EBKKXjmQMwmuqZAzhOQAFYAWoJRUNPTkxJR0hUcghOSzIxVVNJUgpBCMOwARIENzY3MBijsQEgQyje65kDMIvtmQM4TkABWAFqCUVDT05MSUdIVHIITksyMVVTSVJ6CgjBggESBDIwNzcSCggBEAEYASoCQ1gYASIECAEQASgCKAQoBjAB) ![](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 Hanoi Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) HAN Noi Bai Intl. CheapestClosest 24 min [Flights from $1,503 ](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HAN,departure:3/7/2026TANYT&leg2=from:HAN,to:DCA,departure:3/11/2026TANYT&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 Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN) cost? ### What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN)? ### What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN)? ### How many flights per day from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN)? ### What day of the week has the most flights from DCA to HAN? ### What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN)? ### Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN) last-minute? ### Is it cheaper to book a DCA to HAN flight and hotel package? ### Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Noi Bai Intl. Airport (HAN)? ## Travel information | Origin airport | Ronald Reagan Washington National | | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Noi Bai Intl. | | Airlines serving | Air Canada, Air France, All Nippon Airways, American Airlines, Cathay Pacific, Delta, Emirates, Etihad Airways, Japan Airlines, Korean Air, Qatar Airways, United | | Roundtrip price | $961 | | Distance | 8282 mi | ## Book with confidence # Washington to Hanoi Flights The cheapest times to fly from Washington to Hanoi 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 Washington to Hanoi are during the month of August. You can find some of the cheapest flights from Washington to Hanoi with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Hanoi Sunday is one of the best days to book for cheap flights from Washington to Hanoi: 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 Washington to Hanoi 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 Washington to Hanoi in 2026\. You can also book with separate airlines for your outbound and return journeys, from $511 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 Washington to Hanoi 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 Washington to Hanoi 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 - Other - [Cheap Hotels in Phu Cuong ](https://www.expedia.com/Phu-Cuong-Hanoi-Hotels-Cheap-Hotels.0-n6267993-0-tCheapHotels.Travel-Guide-Filter-Hotels) - [Hotels near Melinh Plaza ](https://www.expedia.com/Melinh-Plaza-Hotels.0-l6304321-0.Travel-Guide-Filter-Hotels) - [Hotels near Gia Trung ](https://www.expedia.com/Gia-Trung-Hanoi-Hotels.0-n3000747645-0.Travel-Guide-Filter-Hotels) - [Hotels near Thanh Chuong Viet Palace ](https://www.expedia.com/Thanh-Chuong-Viet-Palace-Hotels.0-l6286773-0.Travel-Guide-Filter-Hotels) - [Hotels near Soc Son ](https://www.expedia.com/Soc-Son-Hanoi-Hotels.0-n553248635924012930-0.Travel-Guide-Filter-Hotels) - [Hotels near Minh Phú ](https://www.expedia.com/Minh-Phu-Hanoi-Hotels.0-n553248635976393475-0.Travel-Guide-Filter-Hotels) - [Hotels near BRG Legend Hill Golf Resort ](https://www.expedia.com/BRG-Legend-Hill-Golf-Resort-Hotels.0-l553248634834712025-0.Travel-Guide-Filter-Hotels) - 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[Ho Chi Minh Mausoleum ](https://www.expedia.com/Ho-Chi-Minh-Mausoleum-Ba-Dinh.d6115776.Vacation-Attraction) - [B52 Victory Museum ](https://www.expedia.com/B52-Victory-Museum-Ba-Dinh.d553248635022544652.Vacation-Attraction) - [One Pillar Pagoda ](https://www.expedia.com/One-Pillar-Pagoda-Ba-Dinh.d6115808.Vacation-Attraction) - [Hanoi Vacations ](https://www.expedia.com/Hanoi.d1428.Destination-Travel-Guides) - [Dong Xuan Market ](https://www.expedia.com/Dong-Xuan-Market-Old-Quarter.d6153506.Vacation-Attraction) - [Visit Hanoi ](https://www.expedia.com/Hanoi.dx1428) - [Visit Liễu Giai ](https://www.expedia.com/Hanoi-Lieu-Giai.dx3000752201) - [Car rentals near Phu Cuong ](https://www.expedia.com/Car-Rentals-In-Phu-Cuong.d6267993.Car-Rental-Guide) - [Car rentals near BRG Legend Hill Golf Resort ](https://www.expedia.com/Car-Rentals-In-BRG-Legend-Hill-Golf-Resort.d553248634834712025.Car-Rental-Guide) - [Car rentals near Tay Ho ](https://www.expedia.com/Car-Rentals-In-Tay-Ho.d3000664655.Car-Rental-Guide) - [Car rentals near Vĩnh Phúc ](https://www.expedia.com/Car-Rentals-In-Vinh-Phuc.d553248635975858205.Car-Rental-Guide) - [Car rentals near Quan Thanh Temple ](https://www.expedia.com/Car-Rentals-In-Quan-Thanh-Temple.d6268303.Car-Rental-Guide) - [Car rentals near Cau Giay ](https://www.expedia.com/Car-Rentals-In-Cau-Giay.d6196907.Car-Rental-Guide) - [Car rentals near Hanoi ](https://www.expedia.com/Car-Rentals-In-Hanoi.d1428.Car-Rental-Guide) - [Car rentals near Liễu Giai ](https://www.expedia.com/Car-Rentals-In-Lieu-Giai.d3000752201.Car-Rental-Guide) - [Things to do in Hanoi ](https://www.expedia.com/Things-To-Do-In-Hanoi.d1428.Travel-Guide-Activities) \*Available to One Key members.