Title: Cheap flights from Sofia to Portland from $598 (SOF to PDX) - Expedia.com ![View of Portland, Oregon overlooking the willamette river on a Fall Afternoon](https://images.trvl-media.com/place/178299/b61662af-dec4-42f2-b3cd-9aa834264b40.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178299/b61662af-dec4-42f2-b3cd-9aa834264b40.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $598 Cheap Flights from Sofia (SOF) to Portland (PDX) [View $598 flight on Sun, May 17, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:SOF,to:PDX,departure:5/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:597.23&airProductToken=AQqrAQoyCMKCARIDODkzGNIrIOuJASidn40DMOWgjQM4T0AAWAFqBU5PQkFHcglPS041QzVCV1AKMwjCggESAzE5MxjriQEgo7EBKMunjQMwrayNAzhPQAFYAWoFTk9CQUdyCU9LTjVDNUJXUApACMKCARIENTEyMRijsQEg77gBKIyujQMw_q-NAzhPQAFYAWoFTk9CQUdyCU9LTjVDNUJXUHoKCMGCARIENTEyMRIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ## Popular airlines from Sofia Airport (SOF) to Portland International Airport (PDX) - ![](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:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&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:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&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:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&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:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](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 Sofia to Portland (SOF-PDX) Prices were available within the past 7 days and start at $598 for one-way flights and $842 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, Jun 3 - Wed, Jul 29 SOF Sofia PDX Portland $842 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:6/3/2026TANYT&leg2=from:PDX,to:SOF,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:841.13&airProductToken=AQqpAQoyCMKCARIDODkzGNIrIOuJASjR3o4DMJngjgM4T0AAWAFqBU5PQkFHcglPS041QzVCV1AKMgjCggESAzI5ORjriQEgrhwo-uaOAzCH644DOE9AAVgBagVOT0JBR3IJT0tONUM1QldQCj8IwoIBEgQ0ODA4GK4cIO-4ASjU7I4DMOPujgM4T0ABWAFqBU5PQkFHcglPS041QzVCV1B6CgjBggESBDQ4MDgSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, Jun 3 - Wed, Jul 29 SOF Sofia PDX Portland $883 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:6/3/2026TANYT&leg2=from:PDX,to:SOF,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:882.13&airProductToken=AQqpAQoyCMKCARIDODkzGNIrIOuJASjR3o4DMJngjgM4UUAAWAFqBU5PQkFHcglRS041QzVCV1AKMgjCggESAzI5NRjriQEgrhwoguaOAzCK6o4DOFFAAVgBagVOT0JBR3IJUUtONUM1QldQCj8IwoIBEgQ0ODA4GK4cIO-4ASjU7I4DMOPujgM4UUABWAFqBU5PQkFHcglRS041QzVCV1B6CgjBggESBDQ4MDgSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, Jun 3 - Wed, Jul 29 SOF Sofia PDX Portland $932 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:6/3/2026TANYT&leg2=from:PDX,to:SOF,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:931.13&airProductToken=AQq4AQoyCMKCARIDODkzGNIrIOuJASjR3o4DMJngjgM4TkAAWAFqBU5PQkFHcglOS041QzVCV1AKQAjCggESBDE1OTAY64kBIKOxASjB5Y4DMJ7qjgM4TkABWAFqBU5PQkFHcglOS041QzVCV1B6CgjBggESBDE1OTAKQAjCggESBDI0NDUYo7EBIO-4ASjd7I4DMM_ujgM4TkABWAFqBU5PQkFHcglOS041QzVCV1B6CgjBggESBDI0NDUSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Fri, Mar 13 - Tue, Sep 15 SOF Sofia PDX Portland $941 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:3/13/2026TANYT&leg2=from:PDX,to:SOF,departure:9/15/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:940.23&airProductToken=AQq6AQo0CMyQARIEMTQzMRjSKyClBCi6vYcDMNW-hwM4S0AAWAFqCEVDT0xJR0hUcghLWDZRQVhCUQo_CMyQARIEOTQwOBilBCCycSiZw4cDMNrIhwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoJCNWCARIDOTI3CkEIzJABEgQ5MjM0GLJxIO-4ASiwyYcDMKfKhwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoKCNWCARIENTcxOAq5AQpBCMywARIEMzMyMxjvuAEgsnEoxvKXAzC085cDOEtAAFgBaghFQ09MSUdIVHIIS1g2UUFYQlF6CgjVggESBDI4NTAKMgjMsAESAjM5GLJxILk8KLv0lwMw3vmXAzhLQAFYAWoIRUNPTElHSFRyCEtYNlFBWEJRCkAIzLABEgQxMzkwGLk8INIrKPGAmAMw-IGYAzhLQAFYAWoIRUNPTElHSFRyCEtYNlFBWEJRegoIspgBEgQxMzkwEgoIAhABGAIqAkxIGAEiBAgBEAEoAigDKAQwCw) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Fri, Mar 13 - Tue, Sep 15 SOF Sofia PDX Portland $944 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:3/13/2026TANYT&leg2=from:PDX,to:SOF,departure:9/15/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:943.43&airProductToken=AQq6AQo0CMyQARIEMTQzMRjSKyClBCi6vYcDMNW-hwM4S0AAWAFqCEVDT0xJR0hUcghLWDZRQVhCUQo_CMyQARIEOTQwOBilBCCycSiZw4cDMNrIhwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoJCNWCARIDOTI3CkEIzJABEgQ5MjM0GLJxIO-4ASiwyYcDMKfKhwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoKCNWCARIENTcxOAquAQpBCMyQARIEOTE5MRjvuAEgrhwo-vGXAzDi85cDOEtAAFgBaghFQ09MSUdIVHIIS1g2UUFYQlF6CgjVggESBDIzMzYKMwjMkAESAzQzNRiuHCCMFSjA9JcDML74lwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUQo0CMyQARIEMTcwNBiMFSDSKyjZ-ZcDMMz6lwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCURIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Wed, Jun 3 - Wed, Jul 29 SOF Sofia PDX Portland $945 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:6/3/2026TANYT&leg2=from:PDX,to:SOF,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:944.53&airProductToken=AQq6AQo0CMyQARIEMTQzMRjSKyClBCjI144DMN7YjgM4S0AAWAFqCEVDT0xJR0hUcghLWDZRQVhCUQo_CMyQARIENzU4NhilBCCDaSiw2o4DMJLfjgM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoJCNWCARIDMTgxCkEIzJABEgQ4NzM4GINpIO-4ASio4I4DMMzhjgM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoKCNWCARIEMTMzNwq6AQpBCMyQARIEOTIzNRjvuAEgsnEoyNSTAzC31ZMDOEtAAFgBaghFQ09MSUdIVHIIS1g2UUFYQlF6CgjVggESBDE2MTMKPwjMkAESBDk0MDMYsnEgpQQo59WTAzDx2pMDOEtAAVgBaghFQ09MSUdIVHIIS1g2UUFYQlF6CQjVggESAzA1OAo0CMyQARIEMTQyOBilBCDSKyin3ZMDMKnekwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCURIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, Jun 3 - Wed, Jul 29 SOF Sofia PDX Portland $953 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:6/3/2026TANYT&leg2=from:PDX,to:SOF,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:952.13&airProductToken=AQqiAQowCMKCARIDODkzGNIrIOuJASjR3o4DMJngjgM4T0AAWAFqA0JBR3IJT0tONUM1TTRQCi8IwoIBEgI1MxjriQEgkgEosuWOAzD76Y4DOE9AAVgBagNCQUdyCU9LTjVDNU00UAo9CMKCARIEMjk5MRiSASDvuAEoku6OAzDM7o4DOE9AAVgBagNCQUdyCU9LTjVDNU00UHoKCMGmARIEMjk5MRIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Wed, Jun 3 - Wed, Jul 29 SOF Sofia PDX Portland $954 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:6/3/2026TANYT&leg2=from:PDX,to:SOF,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:953.03&airProductToken=AQrGAQpACMywARIEMTM5MRjSKyC5PCjl2Y4DMPHajgM4S0AAWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoKCLKYARIEMTM5MQo_CMywARIEMzIwOBi5PCCycSi3244DMIfhjgM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoJCNWCARIDMDQ1CkEIzLABEgQzMzIyGLJxIO-4ASiU4o4DMIrjjgM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCUXoKCNWCARIEMjI2Mgq6AQpBCMyQARIEOTIzNRjvuAEgsnEoyNSTAzC31ZMDOEtAAFgBaghFQ09MSUdIVHIIS1g2UUFYQlF6CgjVggESBDE2MTMKPwjMkAESBDk0MDMYsnEgpQQo59WTAzDx2pMDOEtAAVgBaghFQ09MSUdIVHIIS1g2UUFYQlF6CQjVggESAzA1OAo0CMyQARIEMTQyOBilBCDSKyin3ZMDMKnekwM4S0ABWAFqCEVDT0xJR0hUcghLWDZRQVhCURIKCAIQARgCKgJMWBgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 11 - Wed, Mar 18 SOF Sofia PDX Portland $970 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:3/11/2026TANYT&leg2=from:PDX,to:SOF,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:969.13&airProductToken=AQpmCiAI1YIBEgQ5MTI1GNIrIKUEKOmqhwMwhKyHAzhLQABYAQofCNWCARIDOTI3GKUEILJxKNmshwMwmrKHAzhLQAFYAQohCNWCARIENTcxOBiycSDvuAEo8LKHAzDns4cDOEtAAVgBCmcKIQjVggESBDI2MTUY77gBILJxKKmAiAMwm4GIAzhLQABYAQogCNWCARIEODg4MhiycSCMFSjUgYgDMPeGiAM4S0ABWAEKIAjVggESBDkzMjAYjBUg0iso74eIAzDdiIgDOEtAAVgBEgoIARABGAEqAlVBGAEiBAgBEAEoBDAB) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Wed, Mar 11 - Mon, Mar 16 SOF Sofia PDX Portland $1,054 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:PDX,departure:3/11/2026TANYT&leg2=from:PDX,to:SOF,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:1053.03&airProductToken=AQpGCiEIy5gBEgQzMDc2GNIrIICTASisp4cDMOCohwM4TkAAWAEKIQjLmAESAzYxNRiAkwEg77gBKLWphwMwja6HAzhSQAFYAQpGCiEIy5gBEgM2MTYY77gBIICTASil54cDMN_rhwM4UkAAWAEKIQjLmAESBDMwNzcYgJMBINIrKPDshwMwle6HAzhOQAFYARIKCAEQARgBKgJLTBgBIgQIARABKAQwAQ) ![](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 Portland Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) PDX Portland Intl. CheapestClosest 17 min [Flights from $1,401 ](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:PDX,departure:3/15/2026TANYT&leg2=from:PDX,to:SOF,departure:3/18/2026TANYT&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 Sofia (SOF) to Portland, OR (PDX-Portland Intl.) cost? ### What is the cheapest month to fly from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### Which airlines fly direct from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### What is the cheapest airline that flies from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### How do I find cheap flights from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### What is the best time to fly from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### What is the earliest flight from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### What are the most popular departure times for flights from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### How long does it take to fly from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### Can you fly business or first class from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ### How do I earn miles on a Sofia (SOF) to Portland, OR (PDX-Portland Intl.) flight with Expedia? ### What airports do you fly into for Portland from SOF (SOF)? ### Is it cheaper to buy a plane ticket from Sofia (SOF) to Portland, OR (PDX-Portland Intl.) at the last minute? ### Is it cheaper to book a Sofia (SOF) to Portland, OR (PDX-Portland Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Sofia (SOF) to Portland, OR (PDX-Portland Intl.)? ## Travel information | Origin airport | Sofia | | ------------------- | -------------- | | Destination airport | Portland Intl. | | Roundtrip price | $841 | | Distance | 5988 mi | ## Book with confidence # Sofia to Portland Flights The cheapest times to fly from Sofia to Portland 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 Sofia to Portland are during the month of June. You can find some of the cheapest flights from Sofia to Portland with Expedia's search tool and vast selection of airlines. The best time to book a flight from Sofia to Portland Sunday is one of the best days to book for cheap flights from Sofia to Portland: 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 Sofia to Portland 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 Sofia to Portland in 2026\. You can also book with separate airlines for your outbound and return journeys, from $598 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 Sofia to Portland 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 Sofia to Portland 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. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - [Portland Hotels ](https://www.expedia.com/Portland-Hotels.d178299.Travel-Guide-Hotels) - [Hotels near Portland International Airport Station ](https://www.expedia.com/Portland-International-Airport-Station-Hotels.d6216818.Travel-Guide-Hotels) - [Houseboats in Portland International Airport Station ](https://www.expedia.com/Portland-International-Airport-Station-Houseboats.d6216818-aaHouseboats.Travel-Guide-Accommodation) - [Hotels near Portland Air National Guard Base ](https://www.expedia.com/Portland-Air-National-Guard-Base-Hotels.0-l6325625-0.Travel-Guide-Filter-Hotels) - [Hotels near Colwood National Golf Course ](https://www.expedia.com/Colwood-National-Golf-Course-Hotels.0-l6324523-0.Travel-Guide-Filter-Hotels) - [Hotels near Cascades Station ](https://www.expedia.com/Cascades-Station-Hotels.d6216787.Travel-Guide-Hotels) - 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