What is the cheapest month to fly from Rockford to Sofia?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Rockford (RFD) to Sofia (SOF), with fares starting from $1184.

What is the lowest current fare from RFD to SOF?

The lowest currently-listed fare from Rockford (RFD) to Sofia (SOF) is $1184 on 2026-08-31.

Is there a direct flight from Rockford to Sofia?

There is currently no non-stop service from RFD to SOF. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Rockford to Sofia

Cheapest current fares: $1184 in August 2026 on connecting flights.

Last updated August 6, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Rockford (RFD) to Sofia (SOF). Refreshed daily.

Rockford (RFD) → Sofia (SOF)

August 2026 $1184

Frequently asked questions

What is the cheapest month to fly from Rockford to Sofia?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Rockford (RFD) to Sofia (SOF), with fares starting from $1184.
What is the lowest current fare from RFD to SOF?

The lowest currently-listed fare from Rockford (RFD) to Sofia (SOF) is $1184 on 2026-08-31.
Is there a direct flight from Rockford to Sofia?

There is currently no non-stop service from RFD to SOF. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.