The cheapest times to fly from ISU to SOF are

  • January 8th to May 27th
  • early to mid July
  • November 12th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ISU to SOF is early to mid July. Prices can be as high as $1140 for Friday flights during mid December, or as low as $948 for Monday flights around early to mid July.


When to Fly to Sofia

Flying from Sulaymaniyah (ISU) to Sofia (SOF) will usually cost between $981 to $1077 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid July with an average ticket price of $987. Due to high demand the most expensive time to fly is mid December, with an average price of $1064. Planning your trip to low-cost times can easily save you $78 on economy flights and even more on first-class flights. Generally, any price below $1014 can be considered a good price for a round-trip ISU to SOF flight.

See below for a graph of average weekly prices for the ISU to SOF route. All prices are for round-trip tickets in USD.

ISU to SOF Flight Prices

Compared to other flights, the ISU to SOF flight is priced close to the average and costs less than the average flight leaving from Sulaymaniyah. The average price per mile (for a direct flight) is $0.5, which is above average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to SOF, and Wednesday the cheapest day to fly back into ISU. Fridays are the most expensive days to fly to Sofia, and Saturdays are the most expensive days to return to Sulaymaniyah. Selecting flights on the least expensive days could save you up to $27 (3%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $996. Return trip prices are from the SOF to ISU flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ISU to SOF can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 3 hour 16 minutes may be realistic.


Flight Hacking ISU to SOF

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ISU to SOF — but Champion Traveler does!

Hack #1: Istanbul (ISU > IST > SOF)

  • Price for both tickets: $682
  • Average savings: $333 (32.79%)

See ISU to BEY flights

Hack #2: Beirut (ISU > BEY > SOF)

  • Price for both tickets: $850
  • Average savings: $165 (16.22%)

See ISU to IST flights

Hack #3: London (ISU > LGW > SOF)

  • Price for both tickets: $933
  • Average savings: $81 (7.99%)

See ISU to LGW flights


Flight Questions Answered

Still have questions about flying from ISU to SOF? We’ve got answers.

Which airlines fly this route?

You can find 16 major airlines flying this route most often: Adria, Aeroflot, Air Serbia, Alitalia, atlasglobal, Austrian, El Al, Emirates, flydubai, Iraqi, LOT, Lufthansa, Qatar Airways, Royal Jordanian, TAROM, Turkish Airlines, and potentially more during busy seasons.

How far away is it from Sofia Airport to Sulaymaniyah International Airport?

The distance between the two airports is roughly 1268 miles or 2041 kilometers.

How long does it take to fly from ISU to SOF?

The real-world flight time for a nonstop ISU to SOF flight is about 3 hour 16 minutes.

How many flights go between Sulaymaniyah and Sofia?

It depends on the day of the week and the date, but a typical day might have around 10 available flights from ISU to SOF.


Airport Location Info


Departing Airport

Origination code ISU
Origination airport name Sulaymaniyah International Airport
City Sulaymaniyah
Country Iraq
Latitude 35.6
Longitude 45.3

Return Airport

Destination code SOF
Destination airport name Sofia Airport
City Sofia
Country Bulgaria
Latitude 42.7
Longitude 23.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.