Title: Cheap flights from Sofia to London (SOF to SEN) - 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) # Cheap Flights from Sofia (SOF) to London (SEN) ## Popular airlines from Sofia Airport (SOF) to London (SEN-Southend) - ![](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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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:SEN,departure:4/2/2026TANYT&leg2=from:SEN,to:SOF,departure:4/9/2026TANYT&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) ## 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:SOF,to:STN,departure:4/2/2026TANYT&leg2=from:STN,to:SOF,departure:4/13/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) STN Stansted Cheapest 51 min [Flights from $156 ](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:STN,departure:4/2/2026TANYT&leg2=from:STN,to:SOF,departure:4/13/2026TANYT&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:SOF,to:LCY,departure:4/2/2026TANYT&leg2=from:LCY,to:SOF,departure:4/13/2026TANYT&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 $386 ](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:LCY,departure:4/2/2026TANYT&leg2=from:LCY,to:SOF,departure:4/13/2026TANYT&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 London (SEN-Southend) cost? ### What is the cheapest month to fly from Sofia (SOF) to London (SEN-Southend)? ### Which airlines fly direct from Sofia (SOF) to London (SEN-Southend)? ### How do I find cheap flights from Sofia (SOF) to London (SEN-Southend)? ### What is the best time to fly from Sofia (SOF) to London (SEN-Southend)? ### What is the earliest flight from Sofia (SOF) to London (SEN-Southend)? ### Can you fly business or first class from Sofia (SOF) to London (SEN-Southend)? ### How do I earn miles on a Sofia (SOF) to London (SEN-Southend) flight with Expedia? ### What airports do you fly into for London from SOF (SOF)? ### Is it cheaper to buy a plane ticket from Sofia (SOF) to London (SEN-Southend) at the last minute? ### Is it cheaper to book a Sofia (SOF) to London (SEN-Southend) flight and hotel package? ### Can I cancel or change the date of my flight from Sofia (SOF) to London (SEN-Southend)? ## Travel information | Origin airport | Sofia | | ------------------- | -------- | | Destination airport | Southend | | Distance | 1223 mi | ## Book with confidence # Sofia to London Flights The cheapest times to fly from Sofia 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 Sofia to London are during the month of . You can find some of the cheapest flights from Sofia to London with Expedia's search tool and vast selection of airlines. The best time to book a flight from Sofia to London Sunday is one of the best days to book for cheap flights from Sofia 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 Sofia 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 Sofia to London in 2026\. You can also book with separate airlines for your outbound and return journeys, from 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 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 Sofia 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\. 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