Title: $469 Cheap flights from Washington to Dublin (IAD to DUB) - Expedia.com ![Moment RF](https://images.trvl-media.com/place/1069/6b465f6b-4c05-4ac8-bce6-22ba33b97f11.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/1069/6b465f6b-4c05-4ac8-bce6-22ba33b97f11.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $469 Cheap Flights from Washington (IAD) to Dublin (DUB) [View $469 flight on Thu, Apr 16, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:IAD,to:DUB,departure:4/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:468.30&airProductToken=AQpkCjAIxpIBEgM2NDQYiBggiikovsWKAzChyIoDOExAAFgBagVMSUdIVHIITEoxUVVTTFQKMAjGkgESAzQxNhiKKSCDDSjiyIoDMP3JigM4TEABWAFqBUxJR0hUcghMSjFRVVNMVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) - [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 Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EI.svg) Aer Lingus [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TP.svg) TAP Portugal [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) - ![](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:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&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_IB.svg) Iberia [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![](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:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&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_FI.svg) Icelandair [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FI"}}]) - ![](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:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](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 Dublin (IAD-DUB) Prices were available within the past 7 days and start at $469 for one-way flights and $456 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Wed, Aug 19 - Thu, Aug 27 IAD Washington DUB Dublin $456 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:8/19/2026TANYT&leg2=from:DUB,to:IAD,departure:8/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:455.75&airProductToken=AQoxCi8IxZIBEgMxMTgYiBgggw0o_MOVAzCbx5UDOE9AAFgBagRTQVZScghPTE40SDFCVgoxCi8IxZIBEgMxMTkYgw0giBgorpmWAzCEnZYDOE9AAFgBagRTQVZScghPTE40SDFCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Sun, Apr 19 - Sun, May 10 IAD Washington DUB Dublin $505 Roundtrip found 5 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:4/19/2026TANYT&leg2=from:DUB,to:IAD,departure:5/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:504.63&airProductToken=AQplCjAI05YBEgM5MjYYiBgg4jsolOeKAzDq6ooDOFRAAFgBagVMSUdIVHIIVExYQTZHSFQKMQjTlgESBDI1MzcY4jsggw0oie6KAzCQ74oDOFRAAVgBagVMSUdIVHIIVExYQTZHSFQKZAowCNOWARIDNTM4GIMNIOI7KKvMjAMwrc2MAzhMQABYAWoFTElHSFRyCExMV0E2R0hUCjAI05YBEgM5MjUY4jsgiBgo6c2MAzDs0YwDOExAAVgBagVMSUdIVHIITExXQTZHSFQSCggBEAEYASoCU0sYASIECAEQASgCKAMoBDAB) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Fri, Oct 23 - Sat, Oct 31 IAD Washington DUB Dublin $510 Roundtrip found 17 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:10/23/2026TANYT&leg2=from:DUB,to:IAD,departure:10/31/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:509.93&airProductToken=AQpkCjAI05YBEgM5MjYYiBgg4jso9J6bAzDKopsDOExAAFgBagVMSUdIVHIITExXQTZHSFQKMAjTlgESAzUzNxjiOyCDDSikrZsDMLWumwM4TEABWAFqBUxJR0hUcghMTFdBNkdIVApkCjAI05YBEgM1MzgYgw0g4jsoovKbAzCf85sDOExAAFgBagVMSUdIVHIITExXQTZHSFQKMAjTlgESAzkyNRjiOyCIGCim9JsDMNb4mwM4TEABWAFqBUxJR0hUcghMTFdBNkdIVBIKCAEQARgBKgJTSxgBIgQIARABKAIoAygEMAE) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Sun, Apr 19 - Tue, Apr 28 IAD Washington DUB Dublin $515 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:4/19/2026TANYT&leg2=from:DUB,to:IAD,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:514.23&airProductToken=AQplCjAI05YBEgM5MjYYiBgg4jsolOeKAzDq6ooDOExAAFgBagVMSUdIVHIITExYQTZHSFQKMQjTlgESBDI1MzcY4jsggw0oie6KAzCQ74oDOExAAVgBagVMSUdIVHIITExYQTZHSFQKZQoxCNOWARIEMjUzOBiDDSDiOyi9yYsDML_KiwM4TEAAWAFqBUxJR0hUcghMTFhBNkdIVAowCNOWARIDOTI1GOI7IIgYKInSiwMwjNaLAzhMQAFYAWoFTElHSFRyCExMWEE2R0hUEgoIARABGAEqAlNLGAEiBAgBEAEoAigDKAQwAQ) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Thu, Oct 1 - Wed, Oct 7 IAD Washington DUB Dublin $515 Roundtrip found 6 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:10/1/2026TANYT&leg2=from:DUB,to:IAD,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:514.63&airProductToken=AQplCjAI05YBEgM5MjYYiBgg4jsotKeZAzCKq5kDOExAAFgBagVMSUdIVHIITExXQTZHSFQKMQjTlgESBDI1MzcY4jsggw0oqa6ZAzCwr5kDOExAAVgBagVMSUdIVHIITExXQTZHSFQKZQoxCNOWARIEMjUzOBiDDSDiOyj955kDMP_omQM4TEAAWAFqBUxJR0hUcghMTFhBNkdIVAowCNOWARIDOTI1GOI7IIgYKMnwmQMwzPSZAzhMQAFYAWoFTElHSFRyCExMWEE2R0hUEgoIARABGAEqAlNLGAEiBAgBEAEoAigDKAQwAQ) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Mon, Nov 9 - Sun, Nov 22 IAD Washington DUB Dublin $518 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:11/9/2026TANYT&leg2=from:DUB,to:IAD,departure:11/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:517.83&airProductToken=AQplCjAI05YBEgM5MjYYiBgg4jso2t6cAzC_4pwDOExAAFgBagVMSUdIVHIITExYQTZHSFQKMQjTlgESBDI1MzcY4jsggw0oxeWcAzDM5pwDOExAAVgBagVMSUdIVHIITExYQTZHSFQKlwEKMAjTlgESAzUzNhiDDSCgbCiP6p0DMKrrnQM4TEAAWAFqBUxJR0hUcghMTFhBNkdIVAoxCNOWARIEMTQyNxigbCDiOyi17p0DMPvunQM4TEABWAFqBUxJR0hUcghMTFhBNkdIVAowCNOWARIDOTI1GOI7IIgYKKf2nQMw1_qdAzhMQAFYAWoFTElHSFRyCExMWEE2R0hUEgoIARABGAEqAlNLGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Thu, Sep 3 - Sun, Sep 13 IAD Washington DUB Dublin $524 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:9/3/2026TANYT&leg2=from:DUB,to:IAD,departure:9/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:523.03&airProductToken=AQpoCjIIwYIBEgQ2OTY3GIgYIOuJASiU65YDMODulgM4T0AAWAFqBUJBU0lDcghPTE40SDFCVgoyCMGCARIENzE1MxjriQEggw0o0--WAzCo8JYDOFNAAVgBagVCQVNJQ3IIT0xONEgxQlYKaAoyCMGCARIENzEzMxiDDSDriQEo-tWXAzDU1pcDOFNAAFgBagVCQVNJQ3IIT0xONEgxQlYKMgjBggESBDY2MzAY64kBIIgYKMzXlwMwxduXAzhPQAFYAWoFQkFTSUNyCE9MTjRIMUJWEgwIARABGAEqAkFBMgAYASIECAEQASgCKAMoBDAL) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, Aug 19 - Thu, Aug 27 IAD Washington DUB Dublin $526 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:8/19/2026TANYT&leg2=from:DUB,to:IAD,departure:8/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:525.03&airProductToken=AQpnCjIIwoIBEgQxMjkwGIgYIOuJASiaxJUDMNLHlQM4T0AAWAFqBU5PQkFHcghPTE40SDFCVgoxCMKCARIDODEwGOuJASCDDSi2yJUDMIvJlQM4T0ABWAFqBU5PQkFHcghPTE40SDFCVgpmCjEIwoIBEgM4MjkYgw0g64kBKPCXlgMwypiWAzhPQABYAWoFTk9CQUdyCE9MTjRIMUJWCjEIwoIBEgMyOTMY64kBIIgYKOWZlgMw1J2WAzhPQAFYAWoFTk9CQUdyCE9MTjRIMUJWEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![TAP Portugal](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TP.gif) Thu, Apr 30 - Tue, May 5 IAD Washington DUB Dublin $545 Roundtrip found 2 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:4/30/2026TANYT&leg2=from:DUB,to:IAD,departure:5/5/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:544.23&airProductToken=AQprCjMI1KABEgMyMzIYiBggi5IBKNnhiwMwluWLAzhPQABYAWoHRElTQ0lOVHIIT0YwRFNJSDcKNAjUoAESBDEzMjYYi5IBIIMNKJ_siwMwye2LAzhPQABYAWoHRElTQ0lOVHIIT0YwRFNJSDcKawo0CNSgARIEMTMyNRiDDSCLkgEojpiMAzC9mYwDOE9AAFgBagdESVNDSU5UcghPRjBEU0lINwozCNSgARIDMjMxGIuSASCIGCiAoIwDMP6jjAM4T0AAWAFqB0RJU0NJTlRyCE9GMERTSUg3EgwIARABGAEqAlRQMgAYASIECAEQASgCKAMoBDAN) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Wed, Aug 26 - Tue, Sep 1 IAD Washington DUB Dublin $545 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:DUB,departure:8/26/2026TANYT&leg2=from:DUB,to:IAD,departure:9/1/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:544.63&airProductToken=AQpwCjAIyYQBEgMzNjIYiBggjBgo7JCWAzDClJYDOE9AAFgBagVCQVNJQ3IIT0xONEgxQlYKPAjJhAESBDE4ODMYjBgggw0o6JiWAzCImpYDOE9AAVgBagVCQVNJQ3IIT0xONEgxQlZ6CQjJZBIEMTg4MwpwCjwIyYQBEgQxODgyGIMNIIwYKNLOlgMw7c-WAzhPQABYAWoFQkFTSUNyCE9MTjRIMUJWegkIyWQSBDE4ODIKMAjJhAESAzM2MRiMGCCIGCjM2pYDMPLelgM4T0ABWAFqBUJBU0lDcghPTE40SDFCVhIKCAEQARgBKgJJQhgBIgQIARABKAIoAygEMA0) ![](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 Dublin Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) DUB Dublin Airport CheapestClosest 14 min [Flights from $678 ](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:DUB,departure:3/19/2026TANYT&leg2=from:DUB,to:IAD,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Washington (IAD) to Dublin (DUB) ### March is typically the cheapest month to fly From $344 - $738 per traveler. ## Frequently asked questions ### How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) cost? ### What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? > - Aer Lingus operates around 13 direct flights from IAD to DUB every week > - United operates around 13 direct flights from IAD to DUB every week ### What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? > - Lufthansa > - British Airways > - Aer Lingus > - Air Canada > - United Airlines > - SAS > - Swiss International Air Lines > - KLM > - Air France > - Turkish Airlines > > > First class cabins are available on: > > > - Lufthansa > - United Airlines > - Swiss International Air Lines ### How much is a business class flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ### How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) flight with Expedia? ### Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) at the last minute? ### Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) flight and hotel package? ### Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)? ## Travel information | Origin airport | Washington Dulles Intl. | | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Dublin | | Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United | | Roundtrip price | $456 | | Distance | 3395 mi | | Average flight time | 11 hours 53 mins | ## Book with confidence # Washington to Dublin Flights The cheapest times to fly from Washington to Dublin 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 Dublin are during the month of August. You can find some of the cheapest flights from Washington to Dublin with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Dublin Sunday is one of the best days to book for cheap flights from Washington to Dublin: 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 Dublin 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 Dublin in 2026\. You can also book with separate airlines for your outbound and return journeys, from $469 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 Dublin 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 Dublin 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 - Packages - [Hotels near Ireland's Eye ](https://www.expedia.com/Irelands-Eye-Hotels.0-l6086193-0.Travel-Guide-Filter-Hotels) - [Gay friendly Hotels in Dardistown ](https://www.expedia.com/Dardistown-Hotels-LGBT-Welcoming-Hotel.0-0-d553248635975856820-tLGBTWelcomingHotel.Travel-Guide-Filter-Hotels) - [Dardistown Hotels ](https://www.expedia.com/Dardistown-Hotels.d553248635975856820.Travel-Guide-Hotels) - [Ireland's Eye ](https://www.expedia.com/Irelands-Eye-Dublin.d6086193.Vacation-Attraction) \*Available to One Key members.