Route guide

Sofia to London (SOF-LHR): Nonstop Upgrade & Award Space

Bulgaria Air and British Airways fly the SOF to LHR nonstop about 9 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every SOF to LHR departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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9
Nonstop flights a week
1,268 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every SOF to LHR departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Sofia to London to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SOF to LHR departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SOF to LHR on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Sofia to London nonstop

Carriers operating SOF to LHR nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Bulgaria Air
  • British Airways
See SOF to LHR on the interactive map →

Frequently asked questions about SOF to LHR

How far is London from Sofia?
SOF to LHR covers about 1,268 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SOF to LHR?
Bulgaria Air and British Airways fly the route nonstop. 2LNR tracks confirmed upgrade and award space on both of them.
How many flights a week are there from SOF to LHR?
About 9 nonstop flights a week run between Sofia and London in the current schedule, operated by Bulgaria Air and British Airways. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on SOF to LHR?
Open the SOF to LHR calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Sofia to London route, and 2LNR will notify you when space opens. It's free to start.

Never miss SOF to LHR upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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