Title: Washington to Harlingen cheap flights from $136 (DCA to HRL) - Expedia.com ![Beach condos, hotel with swimming pool, boardwalk access to sandy shoreline tropical South Beach, South Padre Island, exquisite barrier Gulf Coast of Texas, people enjoy beach activities aerial](https://images.trvl-media.com/place/1515/72916b6c-9126-4460-883a-7e0e2c7f43c5.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/1515/72916b6c-9126-4460-883a-7e0e2c7f43c5.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $136 Cheap Flights from Washington (DCA) to Harlingen (HRL) [View $136 flight on Sat, Apr 25, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:135.20&airProductToken=AQpnCjEIwYIBEgQxNjI0GEMgo7EBKMKoiwMwoaqLAzhCQABYAWoFQkFTSUNyCE9WQVpVU0JWCjIIwYIBEgQzMzQ0GKOxASCnXCjHq4sDMKesiwM4QkABWAFqBUJBU0lDcghPVkFaVVNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ## Popular airlines from Ronald Reagan Washington National Airport (DCA) to Valley Intl. Airport (HRL) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HRL,departure:4/20/2026TANYT&leg2=from:HRL,to:DCA,departure:4/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](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:HRL,departure:4/20/2026TANYT&leg2=from:HRL,to:DCA,departure:4/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:HRL,departure:4/20/2026TANYT&leg2=from:HRL,to:DCA,departure:4/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](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:HRL,departure:4/20/2026TANYT&leg2=from:HRL,to:DCA,departure:4/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](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 Harlingen (DCA-HRL) Prices were available within the past 7 days and start at $136 for one-way flights and $271 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Apr 25 - Tue, Apr 28 DCA Washington HRL Harlingen $271 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&leg2=from:HRL,to:DCA,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:270.40&airProductToken=AQpmCjAIwYIBEgM5NjcYQyCjsQEo3qaLAzC2qIsDOEJAAFgBagVCQVNJQ3IIT1ZBWlVTQlYKMgjBggESBDM1NzUYo7EBIKdcKICqiwMw4aqLAzhCQAFYAWoFQkFTSUNyCE9WQVpVU0JWEgwIARABGAEqAkFBMgAYASIECAEQASgCKAMoBDAL) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Sat, Apr 25 - Tue, Apr 28 DCA Washington HRL Harlingen $276 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&leg2=from:HRL,to:DCA,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:275.71&airProductToken=AQqOAQosCNecARIDMTIwGEMgg1gogqSLAzDFpYsDOFZAAFgBagNXR0FyB1ZEQVZIMkcKLQjXnAESAjM3GINYIMejASj4qIsDMMipiwM4VkABWAFqA1dHQXIHVkRBVkgyRwovCNecARIEMjMyNRjHowEgp1womquLAzDbq4sDOFZAAVgBagNXR0FyB1ZEQVZIMkcKYQovCNecARIEMjQzNxinXCDHowEoqcmLAzDvyYsDOFZAAFgBagNXR0FyB1ZEQVZIMkcKLgjXnAESBDM0NTcYx6MBIEMopcyLAzDUzYsDOFZAAVgBagNXR0FyB1ZEQVZIMkcSDAgBEAEYASoCV04yABgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Apr 25 - Tue, Apr 28 DCA Washington HRL Harlingen $280 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&leg2=from:HRL,to:DCA,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:279.40&airProductToken=AQpnCjEIwYIBEgQxODM5GEMgo7EBKLGkiwMwiqaLAzhCQABYAWoFQkFTSUNyCFFWQUlYU0JWCjIIwYIBEgQzNjUxGKOxASCnXCjFp4sDMKWoiwM4QkABWAFqBUJBU0lDcghRVkFJWFNCVhIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwCw) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Sat, Apr 25 - Tue, Apr 28 DCA Washington HRL Harlingen $282 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&leg2=from:HRL,to:DCA,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:281.01&airProductToken=AQqOAQosCNecARIDMTIwGEMgg1gogqSLAzDFpYsDOFZAAFgBagNXR0FyB1ZEQVZIMkcKLQjXnAESAjM3GINYIMejASj4qIsDMMipiwM4VkABWAFqA1dHQXIHVkRBVkgyRwovCNecARIEMjMyNRjHowEgp1womquLAzDbq4sDOFZAAVgBagNXR0FyB1ZEQVZIMkcKkAEKLwjXnAESBDI0MzcYp1wgx6MBKKnJiwMw78mLAzhWQABYAWoDV0dBcgdWREFWSDJHCi8I15wBEgQyMjkxGMejASDgXCjYyosDMNDLiwM4VkABWAFqA1dHQXIHVkRBVkgyRwosCNecARIDMjMzGOBcIEMozcyLAzDFzYsDOFZAAVgBagNXR0FyB1ZEQVZIMkcSDAgBEAEYASoCV04yABgBIgQIARABKAIoAygEMAE) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Wed, May 27 - Wed, Jun 3 DCA Washington HRL Harlingen $282 Roundtrip found 20 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:5/27/2026TANYT&leg2=from:HRL,to:DCA,departure:6/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:281.71&airProductToken=AQphCi4I15wBEgQxNTg5GEMgx6MBKJSQjgMw7ZKOAzhWQABYAWoDV0dBcgdWQkFWSDJHCi8I15wBEgQyMzI1GMejASCnXCiuk44DMPSTjgM4VkABWAFqA1dHQXIHVkJBVkgyRwphCi8I15wBEgQyNDMzGKdcIICVASja244DMKDcjgM4VkAAWAFqA1dHQXIHVkJBVkgyRwouCNecARIEMzk5NhiAlQEgQyjH3o4DMIrgjgM4VkABWAFqA1dHQXIHVkJBVkgyRxIKCAEQARgBKgJXThgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, May 27 - Wed, Jun 3 DCA Washington HRL Harlingen $292 Roundtrip found 20 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:5/27/2026TANYT&leg2=from:HRL,to:DCA,departure:6/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:291.45&airProductToken=AQpvCjUI1YIBEgQxNDUwGEMgiDgo-IuOAzC5jY4DOE5AAFgBagoxX2Jhc2ljZWNvcghLQVUyQUtCUwo2CNWCARIENDI4NxiIOCCnXCinj44DMPaPjgM4TkAAWAFqCjFfYmFzaWNlY29yCEtBVTJBS0JTEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, May 27 - Wed, Jun 3 DCA Washington HRL Harlingen $297 Roundtrip found 20 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:5/27/2026TANYT&leg2=from:HRL,to:DCA,departure:6/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:296.83&airProductToken=AQpuCjQI1YIBEgM2OTcYQyCIOCiEjY4DMM2OjgM4TkAAWAFqCjFfYmFzaWNlY29yCEtBVTJBS0JTCjYI1YIBEgQ0Mjg3GIg4IKdcKKePjgMw9o-OAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0FVMkFLQlMKbwo2CNWCARIENDg3MBinXCCIOCi84I4DMJHhjgM4TkAAWAFqCjFfYmFzaWNlY29yCEtBVTJBS0JTCjUI1YIBEgQyMjI0GIg4IEMo0uGOAzCP444DOE5AAFgBagoxX2Jhc2ljZWNvcghLQVUyQUtCUxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Apr 25 - Tue, Apr 28 DCA Washington HRL Harlingen $300 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&leg2=from:HRL,to:DCA,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:299.40&airProductToken=AQptCjQIxJgBEgQxNDkzGEMgzHwo3KSLAzD_pYsDOEVAAFgBaglNQUlOQkFTSUNyCFhBVlNIM0JRCjUIxJgBEgQxNzAxGMx8IKdcKI2niwMw1aiLAzhFQAFYAWoJTUFJTkJBU0lDcghYQVZTSDNCUQptCjUIxJgBEgQxNzAxGKdcIMx8KO7KiwMwrsyLAzhFQABYAWoJTUFJTkJBU0lDcghUQVZOQTBCQwo0CMSYARIEMjk2MRjMfCBDKO_MiwMw_82LAzhFQAFYAWoJTUFJTkJBU0lDcghUQVZOQTBCQxIMCAEQARgBKgJETDIAGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, May 27 - Wed, Jun 3 DCA Washington HRL Harlingen $303 Roundtrip found 20 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:5/27/2026TANYT&leg2=from:HRL,to:DCA,departure:6/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:302.20&airProductToken=AQpuCjQI1YIBEgMzODIYQyCIOCibj44DMOKQjgM4TkAAWAFqCjFfYmFzaWNlY29yCEtBVTJBS0JTCjYI1YIBEgQ0MzYyGIg4IKdcKKKSjgMw8ZKOAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0FVMkFLQlMSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Apr 25 - Tue, Apr 28 DCA Washington HRL Harlingen $305 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:HRL,departure:4/25/2026TANYT&leg2=from:HRL,to:DCA,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:304.40&airProductToken=AQpnCjEIwYIBEgQxOTc4GEMgo7EBKOGkiwMwvqaLAzhCQABYAWoFQkFTSUNyCE5WQVpVU0JYCjIIwYIBEgQzNjUxGKOxASCnXCjFp4sDMKWoiwM4QkABWAFqBUJBU0lDcghOVkFaVVNCWBIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwCw) ## Frequently asked questions ### How much does a flight from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.) cost? ### What is the cheapest month to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### Which airlines fly direct from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### What is the cheapest airline that flies from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### How do I find cheap flights from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### What is the best time to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### What is the earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### What are the most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### How long does it take to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### Can you fly business or first class from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ### How do I earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.) flight with Expedia? ### What airports do you fly into for Harlingen from Ronald Reagan Washington National (DCA)? ### Is it cheaper to buy a plane ticket from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.) at the last minute? ### Is it cheaper to book a Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Washington, DC (DCA-Ronald Reagan Washington National) to Harlingen, TX (HRL-Valley Intl.)? ## Travel information | Origin airport | Ronald Reagan Washington National | | ------------------- | ---------------------------------------------------- | | Destination airport | Valley Intl. | | Airlines serving | American Airlines, Delta, Southwest Airlines, United | | Roundtrip price | $270 | | Distance | 1478 mi | ## Book with confidence # Washington to Harlingen Flights The cheapest times to fly from Washington to Harlingen 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 Harlingen are during the month of April. You can find some of the cheapest flights from Washington to Harlingen with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Harlingen Sunday is one of the best days to book for cheap flights from Washington to Harlingen: 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 Harlingen 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 Harlingen in 2026\. You can also book with separate airlines for your outbound and return journeys, from $136 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 Harlingen 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 Harlingen 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\. 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