Title: $775 Cheap flights from Detroit to Perth (DTW to PER) - Expedia.com ![Elizabeth Quay which includes a sunset, a city and a bay or harbor](https://images.trvl-media.com/place/553248621593151427/ffa3044e-03de-4748-8599-8aef955dbd0f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/553248621593151427/ffa3044e-03de-4748-8599-8aef955dbd0f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $775 Cheap Flights from Detroit (DTW) to Perth (PER) [View $775 flight on Wed, Feb 18, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DTW,to:PER,departure:2/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:774.63&airProductToken=AQqcAQo9CNGMARIEMzAwORjjtAEgo7EBKMjAhQMwgMKFAzhPQABYAWoERUNTTHIHUVdBTEtVU3oKCMGCARIEMjM3NAosCNGMARICMjIYo7EBIIxZKJTEhQMwuMyFAzhPQABYAWoERUNTTHIFT0pFMFUKLQjRjAESAzc3MRiMWSCPiQEo7s6FAzDj0IUDOFFAAFgBagRFQ1NMcgVPSkUwVRIKCAEQARgBKgJRRhgBIgQIARABKAIoAygEMAs) - [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 Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_QR.svg) Qatar Airways [](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QR"}}]) - ![](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:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&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_QF.svg) Qantas Airways [](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QF"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_NH.svg) All Nippon Airways [](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"NH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_NZ.svg) Air New Zealand [](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"NZ"}}]) - ![](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:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&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_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:2/26/2026TANYT&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 Detroit to Perth (DTW-PER) Prices were available within the past 7 days and start at $775 for one-way flights and $1,423 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Qantas Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QF.gif) Wed, Feb 11 - Wed, Feb 25 DTW Detroit PER Perth $1,423 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:2/11/2026TANYT&leg2=from:PER,to:DTW,departure:2/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1422.86&airProductToken=AQqcAQo7CNGMARIENDY2MxjjtAEgo7EBKM_yhAMwm_SEAzhPQABYAWoERUNTTHIFT0pFMFV6CgjBggESBDExMDgKLAjRjAESAjIyGKOxASCMWSi09YQDMNj9hAM4T0AAWAFqBEVDU0xyBU9KRTBVCi8I0YwBEgM3NjcYjFkgj4kBKLz-hAMwsYCFAzhRQABYAWoERUNTTHIHUVdBTEtVUxIKCAEQARgBKgJRRhgBIgQIARABKAIoAygEMAs) ![Qantas Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QF.gif) Wed, Mar 11 - Wed, Mar 25 DTW Detroit PER Perth $1,441 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:3/11/2026TANYT&leg2=from:PER,to:DTW,departure:3/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1440.99&airProductToken=AQqcAQo7CNGMARIENDcwMxjjtAEgo7EBKLGuhwMw86-HAzhPQABYAWoERUNTTHIFT0pFMFN6CgjBggESBDMzMTAKLgjRjAESAjIyGKOxASCMWSi0sIcDMNi4hwM4T0AAWAFqBEVDU0xyB1FXQUxLVVMKLQjRjAESAzc3MRiMWSCPiQEojruHAzCDvYcDOFFAAFgBagRFQ1NMcgVPSkUwUwqcAQovCNGMARIDNzcwGI-JASCMWSiqwYgDMPzCiAM4UUAAWAFqBEVDU0xyB1FXQUxLVVMKLAjRjAESAjIxGIxZIKOxASjxxIgDMKLMiAM4T0AAWAFqBEVDU0xyBU9KRTBTCjsI0YwBEgQ0MzUyGKOxASDjtAEoj82IAzCvzogDOE9AAFgBagRFQ1NMcgVPSkUwU3oKCMGCARIEMzE0OBIKCAEQARgBKgJRRhgBIgQIARABKAIoAygEMAs) ![Qantas Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QF.gif) Sat, May 9 - Sat, May 23 DTW Detroit PER Perth $1,442 Roundtrip found 14 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:5/9/2026TANYT&leg2=from:PER,to:DTW,departure:5/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1441.99&airProductToken=AQqcAQo7CNGMARIENDY2MxjjtAEgo7EBKPzFjAMwt8eMAzhPQABYAWoERUNTTHIFT0pFMFN6CgjBggESBDIwMzcKLAjRjAESAjIyGKOxASCMWSjQyIwDMPTQjAM4T0AAWAFqBEVDU0xyBU9KRTBTCi8I0YwBEgM3NzcYjFkgj4kBKP_TjAMw-dWMAzhRQABYAWoERUNTTHIHUVdBTEtVUwqcAQotCNGMARIDNzYwGI-JASCMWSi32Y0DMInbjQM4UUAAWAFqBEVDU0xyBU9KRTBTCi4I0YwBEgIyMRiMWSCjsQEo99uNAzDB440DOE9AAFgBagRFQ1NMcgdRV0FMS1VTCjsI0YwBEgQ0NTYyGKOxASDjtAEoouWNAzDD5o0DOE9AAFgBagRFQ1NMcgVPSkUwU3oKCMGCARIEMzEwOBIKCAEQARgBKgJRRhgBIgQIARABKAIoAygEMAs) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Mar 31 - Tue, Apr 14 DTW Detroit PER Perth $1,454 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:3/31/2026TANYT&leg2=from:PER,to:DTW,departure:4/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1453.03&airProductToken=AQpmCiEIwYIBEgQzNDI4GOO0ASCuHCi-jokDMJmPiQM4TkAAWAEKHwjDsAESAzgwMRiuHCDHMij7j4kDMKyXiQM4TkABWAEKIAjDsAESAzE0MxjHMiCPiQEos5iJAzD6m4kDOE5AAVgBCmYKIAjDsAESAzE3MBiPiQEgxzIo6p-KAzDFo4oDOE5AAFgBCh8Iw7ABEgM4MDYYxzIgrhwouqWKAzCvrIoDOE5AAVgBCiEIwYIBEgQ2MjQ1GK4cIOO0ASjMrooDMLCvigM4TkABWAESCggBEAEYASoCQ1gYASIECAEQASgEMAE) ![Cathay Pacific](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CX.gif) Wed, Apr 1 - Tue, Apr 14 DTW Detroit PER Perth $1,479 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:4/1/2026TANYT&leg2=from:PER,to:DTW,departure:4/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1478.73&airProductToken=AQpoCiIIw7ABEgQ3NjQ2GOO0ASCjsQEoo5yJAzDfnYkDOE5AAFgBCiAIw7ABEgM4NzUYo7EBIMcyKKueiQMwk6aJAzhOQAFYAQogCMOwARIDMTQzGMcyII-JASjzrokDMLqyiQM4TkABWAEKZgogCMOwARIDMTcwGI-JASDHMijqn4oDMMWjigM4TkAAWAEKHwjDsAESAzgwNhjHMiCuHCi6pYoDMK-sigM4TkABWAEKIQjBggESBDYyNDUYrhwg47QBKMyuigMwsK-KAzhOQAFYARIKCAEQARgBKgJDWBgBIgQIARABKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Mar 31 - Fri, Apr 17 DTW Detroit PER Perth $1,504 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:3/31/2026TANYT&leg2=from:PER,to:DTW,departure:4/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1503.03&airProductToken=AQpmCiEIwYIBEgQzNDI4GOO0ASCuHCi-jokDMJmPiQM4TkAAWAEKHwjDsAESAzgwMRiuHCDHMij7j4kDMKyXiQM4TkABWAEKIAjDsAESAzE0MxjHMiCPiQEos5iJAzD6m4kDOE5AAVgBCmYKIAjDsAESAzE3MBiPiQEgxzIoysGKAzClxYoDOE5AAFgBCh8Iw7ABEgM4MDYYxzIgrhwomseKAzCPzooDOE5AAVgBCiEIwYIBEgQ2MjQ1GK4cIOO0ASis0IoDMJDRigM4TkABWAESCggBEAEYASoCQ1gYASIECAEQASgEMAE) ![Qantas Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QF.gif) Wed, Mar 11 - Wed, Mar 25 DTW Detroit PER Perth $1,505 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:3/11/2026TANYT&leg2=from:PER,to:DTW,departure:3/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1504.79&airProductToken=AQqnAQo7CNGMARIENDcwMxjjtAEgo7EBKLGuhwMw86-HAzhPQABYAWoERUNTTHIFT0pFMFN6CgjBggESBDMzMTAKNwjRjAESBDQ5MjgYo7EBIKEjKMqxhwMwsrmHAzhPQABYAWoERUNTTHIFT0pFMFN6BwjBggESATcKLwjRjAESAzkzNxihIyCPiQEokr2HAzDNv4cDOE5AAFgBagRFQ1NMcgdOV0FMS1VTCpwBCi8I0YwBEgM3NzAYj4kBIIxZKKrBiAMw_MKIAzhRQABYAWoERUNTTHIHUVdBTEtVUwosCNGMARICMjEYjFkgo7EBKPHEiAMwosyIAzhPQABYAWoERUNTTHIFT0pFMFMKOwjRjAESBDQzNTIYo7EBIOO0ASiPzYgDMK_OiAM4T0AAWAFqBEVDU0xyBU9KRTBTegoIwYIBEgQzMTQ4EgoIARABGAEqAlFGGAEiBAgBEAEoAigDKAQwCw) ![Qantas Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QF.gif) Fri, Mar 6 - Mon, Mar 16 DTW Detroit PER Perth $1,517 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:3/6/2026TANYT&leg2=from:PER,to:DTW,departure:3/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1516.43&airProductToken=AQpnCiII0YwBEgQzMDA5GOO0ASCjsQEoyPSGAzCA9oYDOE9AAFgBCh8I0YwBEgIyMhijsQEgjFkolPiGAzC4gIcDOE9AAVgBCiAI0YwBEgM3NzEYjFkgj4kBKO6ChwMw44SHAzhRQAFYAQpnCiAI0YwBEgM3NjgYj4kBIIxZKPPchwMwxd6HAzhRQABYAQofCNGMARICMjEYjFkgo7EBKNHfhwMwgueHAzhPQAFYAQoiCNGMARIENDM1MhijsQEg47QBKO_nhwMwj-mHAzhPQAFYARIKCAEQARgBKgJRRhgBIgQIARABKAQwAQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Sun, Oct 18 - Tue, Oct 27 DTW Detroit PER Perth $1,937 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:10/18/2026TANYT&leg2=from:PER,to:DTW,departure:10/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1936.13&airProductToken=AQqtAQo0CMyQARIDNDQzGOO0ASClBCjQ5JoDMKHomgM4TEAAWAFqCEVDT1NBVkVScghMWDZYU1lOQwozCMyQARIDNzk2GKUEIMcyKNzvmgMwmPWaAzhMQAFYAWoIRUNPU0FWRVJyCExYNlhTWU5DCkAIzJABEgQ3MDE3GMcyII-JASjz-JoDMLr8mgM4TEABWAFqCEVDT1NBVkVScghMWDZYU1lOQ3oJCMOwARIDMTQzCrkBCkAIzJABEgQ5Nzc5GI-JASCSaiiew5sDMN7FmwM4S0AAWAFqCEVDT1NBVkVScghLWDZYSllOQ3oJCNOiARIDMjI2Cj8IzJABEgQ5NzYzGJJqIKUEKPvHmwMwtM6bAzhLQAFYAWoIRUNPU0FWRVJyCEtYNlhKWU5DegkI06IBEgMwMjYKNAjMkAESAzQ0MhilBCDjtAEos9CbAzDP1JsDOEtAAVgBaghFQ09TQVZFUnIIS1g2WEpZTkMSCggCEAEYAioCTEgYASIECAEQASgCKAMoBDAL) ![Qatar Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QR.gif) Wed, Feb 11 - Wed, Feb 25 DTW Detroit PER Perth $1,973 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DTW,to:PER,departure:2/11/2026TANYT&leg2=from:PER,to:DTW,departure:2/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1972.23&airProductToken=AQq6AQpBCNGkARIEMjU5MhjjtAEg71ko7fOEAzDf9IQDOFFAAFgBaghFQ0xBU1NJQ3IITkxSNVIxUkV6CgjBggESBDUwNzkKPwjRpAESBDkwMDAY71kgwzsozfWEAzDA-4QDOE5AAVgBaghFQ0xBU1NJQ3IITkxSNVIxUkV6CQjBggESAzEyMAo0CNGkARIDOTAwGMM7II-JASisgIUDMMWFhQM4TkABWAFqCEVDTEFTU0lDcghOTFI1UjFSRQq4AQo_CNGkARIEODQwNhiPiQEgwzsom4uGAzDIkIYDOFRAAFgBaghFQ0xBU1NJQ3IIVExVU1AxUkV6CAjWggESAjIxCjMI0aQBEgM3MDEYwzsgqVEooJWGAzCQnIYDOFRAAVgBaghFQ0xBU1NJQ3IIVExVU1AxUkUKQAjRpAESBDM4NzUYqVEg47QBKKWfhgMwq6CGAzhPQAFYAWoIRUNMQVNTSUNyCFRMVVNQMVJFegkIwmwSBDE0MTkSCggBEAEYASoCUVIYASIECAEQASgCKAQoBjAB) ## Alternative airports near Perth Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) PER Perth Airport CheapestClosest 14 min [Flights from $1,629 ](https://www.expedia.com/Flights-Search?leg1=from:DTW,to:PER,departure:2/19/2026TANYT&leg2=from:PER,to:DTW,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flights from Detroit (DTW) to Perth (PER)__ | Origin airport | Detroit Metropolitan Wayne County | | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | | Destination airport | Perth | | Airlines serving | Air Canada, Air France, Air New Zealand, All Nippon Airways, American Airlines, Cathay Pacific, Lufthansa, Qantas Airways, Qatar Airways, United | | Roundtrip price | $1,423 | | Distance | 11161 mi | ## Detroit to Perth Flights The cheapest times to fly from Detroit to Perth 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 Detroit to Perth are during the month of February. You can find some of the cheapest flights from Detroit to Perth with Expedia's search tool and vast selection of airlines. The best time to book a flight from Detroit to Perth Sunday is one of the best days to book for cheap flights from Detroit to Perth: 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 Detroit to Perth 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 Detroit to Perth in 2026\. You can also book with separate airlines for your outbound and return journeys, from $775 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 Detroit to Perth 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 Detroit to Perth 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. ## Frequently asked questions ### How much does a flight from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER) cost? ### What is the cheapest month to fly from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER)? ### What is the cheapest airline that flies from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER)? ### How many flights per day from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER)? ### What day of the week has the most flights from DTW to PER? ### What is the best time to fly from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER)? ### Is it cheaper to buy a plane ticket from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER) last-minute? ### Is it cheaper to book a DTW to PER flight and hotel package? ### Can I cancel or change the date of my flight from Detroit Metropolitan Wayne County Airport (DTW) to Perth Airport (PER)? \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - 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