Title: $1,538 Cheap flights from Washington to Guam (DCA to GUM) - Expedia.com ![Two Lovers Point featuring a gorge or canyon, tropical scenes and views](https://images.trvl-media.com/place/6105512/468fa0c7-13a7-4f1c-9b71-7e93ed7ea70f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Photo courtesy of Guam Visitors Bureau ![](https://images.trvl-media.com/place/6105512/468fa0c7-13a7-4f1c-9b71-7e93ed7ea70f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $1,538 Cheap Flights from Washington (DCA) to Guam (GUM) [View $1,538 flight on Fri, Apr 3, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DCA,to:GUM,departure:4/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1537.19&airProductToken=AQquAQo0CMSYARIEMTE5MxhDIMx8KL2siQMw5K2JAzhNQABYAWoJTUFJTkVYVFJBcghNTkUwV1JNRAo0CMSYARIDMTcxGMx8IMhoKLuwiQMw9LaJAzhNQAFYAWoJTUFJTkVYVFJBcghNTkUwV1JNRApACMSYARIENzg2NBjIaCCGZSi1t4kDMMO5iQM4TUABWAFqCU1BSU5FWFRSQXIITU5FMFdSTUR6CQjLigESAzQxNxIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) - [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 Barrigada - A.B. Won Pat International Airport (GUM) - ![](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:GUM,departure:3/6/2026TANYT&leg2=from:GUM,to:DCA,departure:3/13/2026TANYT&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_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:GUM,departure:3/6/2026TANYT&leg2=from:GUM,to:DCA,departure:3/13/2026TANYT&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 Guam (DCA-GUM) Prices were available within the past 7 days and start at $1,538 for one-way flights and $1,919 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) Wed, Apr 22 - Wed, Apr 29 DCA Washington GUM Guam $1,919 Roundtrip found 6 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:4/22/2026TANYT&leg2=from:GUM,to:DCA,departure:4/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1918.13&airProductToken=AQqlAQo1CNWCARIEMTQ1MBhDIIg4KJiCiwMw64OLAzhXQABYAWoKMV9iYXNpY2Vjb3IIV0xYNjdTQkYKNQjVggESAzI1MxiIOCCnWyimhIsDMK6IiwM4V0AAWAFqCjFfYmFzaWNlY29yCFdMWDY3U0JGCjUI1YIBEgMyMDEYp1sghmUo6oiLAzDFjIsDOFdAAFgBagoxX2Jhc2ljZWNvcghXTFg2N1NCRgqlAQo1CNWCARIDMjAwGIZlIKdbKPHKiwMwms6LAzhXQABYAWoKMV9iYXNpY2Vjb3IIV0xYNjdTQkYKNQjVggESAzIzNhinWyCycSiF0IsDMLfSiwM4V0AAWAFqCjFfYmFzaWNlY29yCFdMWDY3U0JGCjUI1YIBEgQxNjc4GLJxIEMovdOLAzCI1osDOFdAAFgBagoxX2Jhc2ljZWNvcghXTFg2N1NCRhIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,929 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1928.15&airProductToken=AQqfAQozCNWCARIEMTg4OBhDIK4cKPjnmQMw_-iZAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyMTkYrhwgp1soxvGZAzDn9ZkDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzIwMRinWyCGZSiZ9pkDMOX5mQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqiAQozCNWCARIDMjAwGIZlIKdbKNb7mgMwjv-aAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjUI1YIBEgQxMTY5GKdbIIu4ASjMgJsDMJGDmwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgo0CNWCARIEMTk0MRiLuAEgQyjIg5sDMJyHmwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRhIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,933 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1932.70&airProductToken=AQqfAQozCNWCARIEMTc4NRhDIIg4KJPpmQMw6eqZAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyNTMYiDggp1so8_GZAzDl9ZkDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzIwMRinWyCGZSiZ9pkDMOX5mQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqiAQozCNWCARIDMjAwGIZlIKdbKNb7mgMwjv-aAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjUI1YIBEgQxMTY5GKdbIIu4ASjMgJsDMJGDmwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgo0CNWCARIEMTk0MRiLuAEgQyjIg5sDMJyHmwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRhIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Apr 30 - Thu, May 7 DCA Washington GUM Guam $1,934 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:4/30/2026TANYT&leg2=from:GUM,to:DCA,departure:5/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1933.32&airProductToken=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) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,943 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1942.72&airProductToken=AQqfAQozCNWCARIEMTMyNRhDIK4cKNLomQMw1umZAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyMTkYrhwgp1soxvGZAzDn9ZkDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzIwMRinWyCGZSiZ9pkDMOX5mQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqeAQozCNWCARIDMjAwGIZlIKdbKNb7mgMwjv-aAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyNTIYp1sgiDgo6P-aAzCyg5sDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMgjVggESAzUxMhiIOCBDKI6OmwMwvY-bAzhXQAFYAWoIRUNPQkFTSUNyCFdMWDY3U0JGEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Apr 22 - Wed, Apr 29 DCA Washington GUM Guam $1,946 Roundtrip found 6 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:4/22/2026TANYT&leg2=from:GUM,to:DCA,departure:4/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1945.02&airProductToken=AQqiAQo0CNWCARIENDE2NxhDIMSNASiYgosDMOiCiwM4V0AAWAFqCEVDT0JBU0lDcghXTFg2N1NCRgo0CNWCARICNzkYxI0BIK2cASjdhIsDMKqLiwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgo0CNWCARIDMTk3GK2cASCGZSjAjIsDMKGOiwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqfAQozCNWCARIDMjAwGIZlIKdbKPHKiwMwms6LAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyMzYYp1sgsnEohdCLAzC30osDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESBDE2NzgYsnEgQyi904sDMIjWiwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRhIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,948 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1947.27&airProductToken=AQqfAQozCNWCARIEMTM4MRhDIIg4KKromQMwgOqZAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyNTMYiDggp1so8_GZAzDl9ZkDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzIwMRinWyCGZSiZ9pkDMOX5mQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqeAQozCNWCARIDMjAwGIZlIKdbKNb7mgMwjv-aAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyNTIYp1sgiDgo6P-aAzCyg5sDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMgjVggESAzUxMhiIOCBDKI6OmwMwvY-bAzhXQAFYAWoIRUNPQkFTSUNyCFdMWDY3U0JGEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,949 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1948.94&airProductToken=AQqfAQozCNWCARIEMTMyNRhDIK4cKNLomQMw1umZAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgMyMTkYrhwgp1soxvGZAzDn9ZkDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzIwMRinWyCGZSiZ9pkDMOX5mQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqgAQo0CNWCARIDMTUxGIZlIIq6ASjb-5oDMMH9mgM4V0AAWAFqCEVDT0JBU0lDcghXTFg2N1NCRgozCNWCARICMzQYiroBILJxKNuAmwMwuIWbAzhXQAFYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgQyMzg2GLJxIEMo4oabAzCRiZsDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,956 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1955.52&airProductToken=AQqfAQozCNWCARIEMTc5MxhDIK4cKLbkmQMwvuWZAzhXQABYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgM4ODEYrhwgpxsovOeZAzDh7ZkDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzg0OBinGyCGZSjL8ZkDMKzzmQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgqgAQo0CNWCARIDMTUxGIZlIIq6ASjb-5oDMMH9mgM4V0AAWAFqCEVDT0JBU0lDcghXTFg2N1NCRgozCNWCARICMzQYiroBILJxKNuAmwMwuIWbAzhXQAFYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCjMI1YIBEgQyMzg2GLJxIEMo4oabAzCRiZsDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Oct 7 - Wed, Oct 21 DCA Washington GUM Guam $1,957 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DCA,to:GUM,departure:10/7/2026TANYT&leg2=from:GUM,to:DCA,departure:10/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1956.69&airProductToken=AQqhAQo0CNWCARIENDE2NxhDIMSNASiY5JkDMOfkmQM4V0AAWAFqCEVDT0JBU0lDcghXTFg2N1NCRgo0CNWCARIDMTMxGMSNASCnGyiI5pkDMPPsmQM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgozCNWCARIDODQ4GKcbIIZlKMvxmQMwrPOZAzhXQAFYAWoIRUNPQkFTSUNyCFdMWDY3U0JGCp4BCjMI1YIBEgMyMDAYhmUgp1so1vuaAzCO_5oDOFdAAFgBaghFQ09CQVNJQ3IIV0xYNjdTQkYKMwjVggESAzI1MhinWyCIOCjo_5oDMLKDmwM4V0ABWAFqCEVDT0JBU0lDcghXTFg2N1NCRgoyCNWCARIDNTEyGIg4IEMojo6bAzC9j5sDOFdAAVgBaghFQ09CQVNJQ3IIV0xYNjdTQkYSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![](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 Barrigada 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:GUM,departure:3/6/2026TANYT&leg2=from:GUM,to:DCA,departure:3/9/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) GUM A.B. Won Pat Intl. Cheapest [Flights from $2,729 ](https://www.expedia.com/Flights-Search?leg1=from:DCA,to:GUM,departure:3/6/2026TANYT&leg2=from:GUM,to:DCA,departure:3/9/2026TANYT&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 A.B. Won Pat Intl. Airport (GUM) cost? ### What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to A.B. Won Pat Intl. Airport (GUM)? ### What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to A.B. Won Pat Intl. Airport (GUM)? ### How many flights per day from Ronald Reagan Washington National Airport (DCA) to A.B. Won Pat Intl. Airport (GUM)? ### What day of the week has the most flights from DCA to GUM? ### What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to A.B. Won Pat Intl. Airport (GUM)? ### Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to A.B. Won Pat Intl. Airport (GUM) last-minute? ### Is it cheaper to book a DCA to GUM flight and hotel package? ### Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to A.B. Won Pat Intl. Airport (GUM)? ## Travel information | Origin airport | Ronald Reagan Washington National | | ------------------- | --------------------------------- | | Destination airport | A.B. Won Pat Intl. | | Airlines serving | Delta, United | | Roundtrip price | $1,918 | | Distance | 7924 mi | ## Book with confidence # Washington to Guam Flights The cheapest times to fly from Washington to Guam 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 Guam are during the month of April. You can find some of the cheapest flights from Washington to Guam with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Guam Sunday is one of the best days to book for cheap flights from Washington to Guam: 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 Guam 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 Guam in 2026\. You can also book with separate airlines for your outbound and return journeys, from $1,538 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 Guam 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 Guam 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.