Title: $347 Cheap flights from Washington to Casper (WAS to CPR) - Expedia.com ![Casper featuring landscape views and golf](https://images.trvl-media.com/place/6055899/008589a9-fc96-46ff-8eb9-c572559321cd.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Casper Area Convention and Visitors Bureau ![](https://images.trvl-media.com/place/6055899/008589a9-fc96-46ff-8eb9-c572559321cd.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $347 Cheap Flights from Washington (WAS) to Casper (CPR) [View $347 flight on Fri, Jun 19, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:BWI,to:CPR,departure:6/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:346.90&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKL-TkAMwqZWQAzhOQABYAWoKMV9iYXNpY2Vjb3IIVkFBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKNaWkAMwnJeQAzhOQABYAWoKMV9iYXNpY2Vjb3IIVkFBMkFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) - [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 to Casper, WY (CPR-Natrona County Intl.) - ![](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:WAS,to:CPR,departure:2/24/2026TANYT&leg2=from:CPR,to:WAS,departure:3/3/2026TANYT&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 Casper (WAS-CPR) Prices were available within the past 7 days and start at $347 for one-way flights and $298 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 24 - Tue, Mar 31 BWI Baltimore CPR Casper $298 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:3/24/2026TANYT&leg2=from:CPR,to:BWI,departure:3/31/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:297.80&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKNPAiAMw0sKIAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKOXDiAMwr8SIAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KcAo3CNWCARIENTgwORjiiwEgg2ko-o-JAzDVkIkDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo1CNWCARIDNzA5GINpIMFFKJSRiQMw7JKJAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, May 8 - Tue, May 12 BWI Baltimore CPR Casper $304 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:5/8/2026TANYT&leg2=from:CPR,to:BWI,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:303.10&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKPy6jAMw-byMAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKJC-jAMw2r6MAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KcQo3CNWCARIENTUxMxjiiwEgg2ko7eOMAzDE5IwDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo2CNWCARIEMTcyMBiDaSDBRSj55IwDMJHojAM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, May 8 - Tue, May 12 BWI Baltimore CPR Casper $308 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:5/8/2026TANYT&leg2=from:CPR,to:BWI,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:307.48&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKPy6jAMw-byMAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDU4MDIYg2kg4osBKKG9jAMw6b2MAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KcQo3CNWCARIENTUxMxjiiwEgg2ko7eOMAzDE5IwDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo2CNWCARIEMTM2MhiDaSDBRSjn5YwDMLrnjAM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Apr 7 - Sat, Apr 11 BWI Baltimore CPR Casper $310 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:4/7/2026TANYT&leg2=from:CPR,to:BWI,departure:4/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:309.63&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKKLeiQMwmeCJAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKK_hiQMw9-GJAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KcQo3CNWCARIENTgxOBjiiwEgg2ko8YeKAzDLiIoDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo2CNWCARIEMTM2MhiDaSDBRSiNiYoDMN-KigM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Mar 14 - Tue, Mar 17 IAD Washington CPR Casper $312 Roundtrip found 7 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:CPR,departure:3/14/2026TANYT&leg2=from:CPR,to:IAD,departure:3/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:311.78&airProductToken=AQpxCjYI1YIBEgQxODY1GIgYIINpKJvNhwMwmM-HAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDQ3OTcYg2kg4osBKO3PhwMwuNCHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KcQo3CNWCARIENDY1OBjiiwEgg2kozfGHAzCn8ocDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo2CNWCARIEMjQwOBiDaSCIGCjf84cDMKj1hwM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, May 8 - Tue, May 12 BWI Baltimore CPR Casper $313 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:5/8/2026TANYT&leg2=from:CPR,to:BWI,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:312.78&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKPy6jAMw-byMAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDU4MDIYg2kg4osBKKG9jAMw6b2MAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3jjAMwxOSMAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNgjVggESBDI0MzAYg2kgrhwol-WMAzC15owDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo2CNWCARIEMjMyORiuHCDBRSjN54wDMMjojAM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Apr 7 - Sat, Apr 11 BWI Baltimore CPR Casper $315 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:4/7/2026TANYT&leg2=from:CPR,to:BWI,departure:4/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:314.93&airProductToken=AQqoAQo1CNWCARIDMjgxGMFFIK4cKLjZiQMwxdqJAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNgjVggESBDE4MDMYrhwgg2koldyJAzDF3YkDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo3CNWCARIENTI5NBiDaSDiiwEo_t6JAzDG34kDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgpxCjcI1YIBEgQ1ODE4GOKLASCDaSjxh4oDMMuIigM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOCjYI1YIBEgQxMzYyGINpIMFFKI2JigMw34qKAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, Feb 22 - Sun, Mar 1 BWI Baltimore CPR Casper $323 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:2/22/2026TANYT&leg2=from:CPR,to:BWI,departure:3/1/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:322.80&airProductToken=AQpxCjYI1YIBEgQyMDEyGMFFIINpKNXvhQMw0fGFAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNEFEQk4KNwjVggESBDU4MDIYg2kg4osBKIHyhQMwzvKFAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNEFEQk4KcAo3CNWCARIENDY1OBjiiwEgg2kohL6GAzDfvoYDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo1CNWCARIDNzA5GINpIMFFKJzAhgMw6cGGAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Feb 18 - Fri, Feb 27 BWI Baltimore CPR Casper $329 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:CPR,departure:2/18/2026TANYT&leg2=from:CPR,to:BWI,departure:2/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:328.10&airProductToken=AQqpAQo2CNWCARIEMTA5NRjBRSCuHCiCwIUDMJHBhQM4TkAAWAFqCjFfYmFzaWNlY29yCExGQTRBREJOCjYI1YIBEgQyMzQ3GK4cIINpKLjChQMw6MOFAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNEFEQk4KNwjVggESBDU4MDIYg2kg4osBKIHFhQMwzsWFAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNEFEQk4KcAo3CNWCARIENTgwORjiiwEgg2kot6iGAzCRqYYDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo1CNWCARIDNzA5GINpIMFFKNyphgMwqauGAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Mar 14 - Wed, Mar 18 IAD Washington CPR Casper $348 Roundtrip found 16 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:CPR,departure:3/14/2026TANYT&leg2=from:CPR,to:IAD,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:347.52&airProductToken=AQpwCjUI1YIBEgM1OTkYiBggg2ko1tCHAzDb0ocDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo3CNWCARIENTIyNhiDaSDiiwEopdOHAzDv04cDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgpxCjcI1YIBEgQ0NjU4GOKLASCDaSjt_IcDMMf9hwM4TkAAWAFqCjFfYmFzaWNlY29yCExGQTRBREJOCjYI1YIBEgQyNDA4GINpIIgYKP_-hwMwyICIAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNEFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ## Alternative airports near Casper Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:CPR,departure:2/24/2026TANYT&leg2=from:CPR,to:BWI,departure:3/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) CPR Natrona County Intl. CheapestClosest 12 min [Flights from $413 ](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:CPR,departure:2/24/2026TANYT&leg2=from:CPR,to:BWI,departure:3/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flights from Baltimore (BWI) to Casper (CPR)__ | Origin airport | Baltimore Washington Intl. Thurgood Marshall | | ------------------- | -------------------------------------------- | | Destination airport | Natrona County Intl. | | Airlines serving | United | | Roundtrip price | $298 | | Distance | 1565 mi | ## Washington to Casper Flights The cheapest times to fly from Washington to Casper 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 Casper are during the month of March. You can find some of the cheapest flights from Washington to Casper with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Casper Sunday is one of the best days to book for cheap flights from Washington to Casper: 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 Casper 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 Casper in 2026\. You can also book with separate airlines for your outbound and return journeys, from $347 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 Casper 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 Casper 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. \*Available to One Key members.