Title: Phoenix to London cheap flights from $404 (PHX to LHR) - Expedia.com ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $404 Cheap Flights from Phoenix (PHX) to London (LHR) [View $404 flight on Sat, Apr 25, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:PHX,to:LHR,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:404.00&airProductToken=AQpeCiwIwmwSAjM2GO-5ASCpUSjJrIsDMNyuiwM4TEAAWAFqAkROcghPTDJMU1ZMMQouCMJsEgQxMTA3GKlRIOuJASi9sIsDMOGziwM4TEABWAFqAkROcghPTDJMU1ZMMRIKCAEQARgBKgJCNhgBIgQIARABKAIoBCgGMAE) ## Popular airlines from Phoenix Sky Harbor Intl. Airport (PHX) to Heathrow Airport (LHR) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AY.svg) Finnair [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![](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:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&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_LH.svg) Lufthansa [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&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_WS.svg) WestJet [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![](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:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&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_AC.svg) Air Canada [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&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_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](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 Phoenix to London (PHX-LHR) Prices were available within the past 7 days and start at $404 for one-way flights and $828 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Thu, May 7 - Tue, May 19 PHX Phoenix LHR London $828 Roundtrip found 2 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:5/7/2026TANYT&leg2=from:LHR,to:PHX,departure:5/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:827.93&airProductToken=AQpoCiII05YBEgQzODg4GO-5ASCLuAEo-LCMAzDTsYwDOExAAFgBCiAI05YBEgM5MzIYi7gBIOI7KMKyjAMw1reMAzhMQAFYAQogCNOWARIDNTA1GOI7IOuJASjswowDMOTDjAM4TEABWAEKaAogCNOWARIDNTA2GOuJASDiOyjgtI0DMNO1jQM4TEAAWAEKIAjTlgESAzkzMRjiOyCLuAEon76NAzDWw40DOExAAVgBCiII05YBEgQzNDQ4GIu4ASDvuQEooMaNAzD-xo0DOExAAVgBEgoIARABGAEqAlNLGAEiBAgBEAEoBDAB) ![JetBlue Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/b6.gif) Fri, Apr 17 - Sun, Apr 19 PHX Phoenix LHR London $857 Roundtrip found 2 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:4/17/2026TANYT&leg2=from:LHR,to:PHX,departure:4/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:856.23&airProductToken=AQpeCiwIwmwSAjM2GO-5ASCpUSjJ0ooDMNzUigM4TEAAWAFqAkROcghVTDAyQlpMMQouCMJsEgQxMTA3GKlRIOuJASi91ooDMOHZigM4TEABWAFqAkROcghVTDAyQlpMMQpfCi4IwmwSBDIyMjAY64kBIKlRKJPfigMw8uKKAzhMQABYAWoCRE5yCE9MMDJCVkwxCi0IwmwSAzczNRipUSDvuQEo4OWKAzDD6IoDOExAAVgBagJETnIIT0wwMkJWTDESDAgBEAEYASoCQjYyABgBIgQIARABKAIoBCgGMAE) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Wed, Oct 7 - Tue, Oct 13 PHX Phoenix LHR London $926 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:10/7/2026TANYT&leg2=from:LHR,to:PHX,departure:10/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:925.13&airProductToken=AQpqCjMIyYQBEgQ0NTcwGO-5ASCjsQEos-qZAzDR65kDOE9AAFgBagVCQVNJQ3IIT0xYNUMxQlYKMwjJhAESBDQyMDYYo7EBIOuJASiF7JkDMKbwmQM4T0ABWAFqBUJBU0lDcghPTFg1QzFCVgo1CjMIyYQBEgQ0ODU1GOuJASDvuQEooaeaAzC1rJoDOE9AAFgBagVCQVNJQ3IIT0xYNUMxQlYSDAgBEAEYASoCSUIyABgBIgQIARABKAIoAygEMA0) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Sun, Aug 9 - Fri, Aug 21 PHX Phoenix LHR London $938 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:8/9/2026TANYT&leg2=from:LHR,to:PHX,departure:8/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:937.63&airProductToken=AQpnCjIIwYYBEgQxNzMwGO-5ASCYXSjfzpQDMP7QlAM4VEAAWAFqBUJBU0lDcghUTFg1NlRCUQoxCMGGARIDODY2GJhdIOuJASiw0pQDMMrVlAM4VEABWAFqBUJBU0lDcghUTFg1NlRCUQqaAQoxCMGGARIDODY3GOuJASCYXSje0pUDMKDWlQM4VEAAWAFqBUJBU0lDcghUTFg1NlRCUQoxCMGGARIEODQ4MRiYXSCuHCjr1pUDMIvYlQM4VEABWAFqBUJBU0lDcghUTFg1NlRCUQoyCMGGARIEMzA1MxiuHCDvuQEo1tiVAzDB2pUDOFRAAVgBagVCQVNJQ3IIVExYNTZUQlESDAgBEAEYASoCQUMyABgBIgQIARABKAIoAygEMAE) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Wed, Oct 7 - Tue, Oct 13 PHX Phoenix LHR London $956 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:10/7/2026TANYT&leg2=from:LHR,to:PHX,departure:10/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:955.63&airProductToken=AQo1CjMIyYQBEgQzNjI5GO-5ASDriQEo1eyZAzCt8ZkDOFFAAFgBagVCQVNJQ3IIUUxYNUMxQlYKNQozCMmEARIENDg1NRjriQEg77kBKKGnmgMwtayaAzhPQABYAWoFQkFTSUNyCE9MWDVDMUJWEgwIARABGAEqAklCMgAYASIECAEQASgCKAMoBDAN) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Wed, Oct 7 - Tue, Oct 13 PHX Phoenix LHR London $964 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:10/7/2026TANYT&leg2=from:LHR,to:PHX,departure:10/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:963.03&airProductToken=AQpqCjMIy5gBEgQ2ODk1GO-5ASCLuAEoy-eZAzCs6JkDOFZAAFgBagVMSUdIVHIIVkxYNTZOQkwKMwjLmAESBDI1MTMYi7gBIOuJASia6pkDMIvvmQM4VkABWAFqBUxJR0hUcghWTFg1Nk5CTAqeAQozCMuYARIEMTAwMhjriQEggJMBKMymmgMwnKeaAzhMQABYAWoFTElHSFRyCFZMWDU2TkJMCjIIy5gBEgM2MDMYgJMBIIu4ASiFqJoDMJmtmgM4VkABWAFqBUxJR0hUcghWTFg1Nk5CTAozCMuYARIENTc1MBiLuAEg77kBKL6umgMwlq-aAzhWQAFYAWoFTElHSFRyCFZMWDU2TkJMEgwIARABGAEqAktMMgAYASIECAEQASgCKAMoBDAB) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Wed, Oct 7 - Tue, Oct 13 PHX Phoenix LHR London $972 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:10/7/2026TANYT&leg2=from:LHR,to:PHX,departure:10/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:971.93&airProductToken=AQqiAQo1CMaSARIENzcxMBjvuQEgkgEo6ueZAzCm6ZkDOElAAFgBaghTVEFOREFSRHIISUoyUU9BRUMKMwjGkgESAzY4MBiSASCKKSiQ6pkDMNftmQM4SUABWAFqCFNUQU5EQVJEcghJSjJRT0FFQwo0CMaSARIDNDUwGIopIOuJASis7pkDMO_vmQM4SUABWAFqCFNUQU5EQVJEcghJSjJRT0FFQwqiAQo0CMaSARIDNDUxGOuJASCKKSjVqJoDMJOqmgM4SUAAWAFqCFNUQU5EQVJEcghJSjJRT0FFQwozCMaSARIDNjgxGIopIJIBKPKqmgMw166aAzhJQAFYAWoIU1RBTkRBUkRyCElKMlFPQUVDCjUIxpIBEgQ3NjQxGJIBIO-5ASiLsJoDMMCxmgM4SUABWAFqCFNUQU5EQVJEcghJSjJRT0FFQxIMCAEQARgBKgJGSTIAGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Aug 14 - Thu, Aug 20 PHX Phoenix LHR London $975 Roundtrip found 17 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:8/14/2026TANYT&leg2=from:LHR,to:PHX,departure:8/20/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:974.73&airProductToken=AQppCjMIwYIBEgQxNjc4GO-5ASDimgEo9IeVAzDxiZUDOEJAAFgBagVCQVNJQ3IIT0xXNUMxQlYKMgjBggESAzczMBjimgEg64kBKKiKlQMwg46VAzhCQAFYAWoFQkFTSUNyCE9MVzVDMUJWCjQKMgjBggESAzE5NRjriQEg77kBKJjIlQMwp82VAzhCQABYAWoFQkFTSUNyCE9MWDVDMUJWEgwIARABGAEqAkFBMgAYASIECAEQASgCKAMoBDAL) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Mon, Aug 24 - Fri, Sep 4 PHX Phoenix LHR London $1,040 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:8/24/2026TANYT&leg2=from:LHR,to:PHX,departure:9/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1039.63&airProductToken=AQpuCjYIxJgBEgQyMjg0GO-5ASDMfCjg-5UDMJn9lQM4RUAAWAFqCU1BSU5CQVNJQ3IIVkxYNTZOQkwKNAjEmAESAjEwGMx8IOuJASjV_ZUDMLWBlgM4RUABWAFqCU1BSU5CQVNJQ3IIVkxYNTZOQkwKhwEKQgjEmAESBDgzMTMY64kBIOIwKNvulgMwsO-WAzhFQABYAWoJTUFJTkJBU0lDcghWTFg1Nk5CTHoKCMGMARIEMTM4MQpBCMSYARIEODY5NhjiMCDvuQEowfCWAzDa9ZYDOEVAAVgBaglNQUlOQkFTSUNyCFZMWDU2TkJMegkIwYwBEgMwNjgSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, Aug 4 - Wed, Aug 19 PHX Phoenix LHR London $1,055 Roundtrip found 8 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:LHR,departure:8/4/2026TANYT&leg2=from:LHR,to:PHX,departure:8/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1054.23&airProductToken=AQo0CjIIwoIBEgMyODgY77kBIOuJASjVnJQDMK2hlAM4UUAAWAFqBU5PQkFHcghRTFg1QzFCVgo1CjMIwoIBEgQxNTI2GOuJASDvuQEo-LyVAzCHwpUDOE9AAFgBagVOT0JBR3IIT0xYNUMxQlYSDAgBEAEYASoCQkEyABgBIgQIARABKAIoAzAN) ## Alternative airports near London Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LGW,departure:4/17/2026TANYT&leg2=from:LGW,to:PHX,departure:4/19/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LGW Gatwick 52 min [Flights from $3,142 ](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LGW,departure:4/17/2026TANYT&leg2=from:LGW,to:PHX,departure:4/19/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LCY,departure:4/17/2026TANYT&leg2=from:LCY,to:PHX,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LCY London City Closest 21 min [Flights from $1,751 ](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:LCY,departure:4/17/2026TANYT&leg2=from:LCY,to:PHX,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Phoenix (PHX) to London (LHR) ### March is typically the cheapest month to fly From $790 - $1,849 per traveler. ## Frequently asked questions ### How much does a flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow) cost? ### What is the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### Which airlines fly direct from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? > - British Airways operates around 7 direct flights from PHX to LHR every week > - American Airlines operates around 7 direct flights from PHX to LHR every week ### What is the cheapest airline that flies from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### How do I find cheap flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### What is the best airline to fly with from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### What is the best time to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### How many flights per day from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### What is the earliest flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### What are the most popular departure times for flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### How long does it take to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### Can you fly business or first class from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? > - British Airways > - American Airlines > - United Airlines > - Air Canada > - Air France > - Delta Air Lines > - JetBlue Airways > > > First class is available with American Airlines. ### How much is a business class flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ### How do I earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow) flight with Expedia? ### What airports do you fly into for London from Sky Harbor Intl. (PHX)? ### Is it cheaper to buy a plane ticket from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow) at the last minute? ### Is it cheaper to book a Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow) flight and hotel package? ### Can I cancel or change the date of my flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to London (LHR-Heathrow)? ## Travel information | Origin airport | Sky Harbor Intl. | | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Heathrow | | Airlines serving | Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, United, Virgin Atlantic, WestJet | | Roundtrip price | $828 | | Distance | 5258 mi | | Average flight time | 18 hours 10 mins | ## Book with confidence # Phoenix to London Flights The cheapest times to fly from Phoenix to London 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 Phoenix to London are during the month of May. You can find some of the cheapest flights from Phoenix to London with Expedia's search tool and vast selection of airlines. The best time to book a flight from Phoenix to London Sunday is one of the best days to book for cheap flights from Phoenix to London: 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 Phoenix to London 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 Phoenix to London in 2026\. You can also book with separate airlines for your outbound and return journeys, from $404 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 Phoenix to London 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 Phoenix to London 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. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rentals - Other - [Hotels near Heathrow Terminals 2 & 3 Underground Station ](https://www.expedia.com/Heathrow-Terminals-2-3-Underground-Station-Hotels.d6146382.Travel-Guide-Hotels) - [Aparthotels in Heathrow Terminals 2 & 3 Underground Station ](https://www.expedia.com/Heathrow-Terminals-2-3-Underground-Station-Apart-Hotels.d6146382-aaApartHotels.Travel-Guide-Accommodation) - [Hotels near Heathrow Terminals 2 & 3 Station ](https://www.expedia.com/Heathrow-Terminals-2-3-Station-Hotels.d553248634672447135.Travel-Guide-Hotels) - [Hotels near Heathrow Villages ](https://www.expedia.com/Heathrow-Villages-London-Hotels.0-n553248635976382877-0.Travel-Guide-Filter-Hotels) - [Hotels near Heathrow Terminal 4 Station ](https://www.expedia.com/Heathrow-Terminal-4-Station-Hotels.d553248634646112269.Travel-Guide-Hotels) - 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