Chicago (ORD) → Sofia (SOF)
About Chicago to Sofia Flights
Discover the best flights from Chicago to Sofia, covering 8,366 km in approximately 10h 57m. Chicago (ORD) to Sofia (SOF) is one of the major long-haul routes connecting United States and Bulgaria. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Chicago to Sofia.
12-Month Price History
Flight prices from Chicago to Sofia vary significantly throughout the year. February typically offers the best deals with average prices around $1511, while July sees the highest prices, averaging $2536. Savvy travelers can save up to 40% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
130 days
For best prices
Booking Tips
For the best prices on Chicago to Sofia flights, we recommend booking 82 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
Bulgaria Air FB | $2370 | $8480 | $14220 |
Kalitta Air K4 | $2390 | $8780 | $13020 |
United Airlines UA | $2440 | $9150 | $12290 |
Delta Air Lines DL | $2530 | $8810 | $14310 |
American Airlines AA | $2820 | $9670 | $12750 |
SkyWest Airlines OO | $2880 | $8260 | $14440 |
British Airways BA | $2970 | $10730 | $13890 |
Bulgaria Air
FB
Economy
$2370
Business
$8480
First
$14220
Kalitta Air
K4
Economy
$2390
Business
$8780
First
$13020
United Airlines
UA
Economy
$2440
Business
$9150
First
$12290
Delta Air Lines
DL
Economy
$2530
Business
$8810
First
$14310
American Airlines
AA
Economy
$2820
Business
$9670
First
$12750
SkyWest Airlines
OO
Economy
$2880
Business
$8260
First
$14440
British Airways
BA
Economy
$2970
Business
$10730
First
$13890
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Milwaukee → Sofia
Milwaukee Mitchell International (MKE) to Sofia (SOF)
Distance: 8,289 km
Average price: $1746
Chicago → Sofia
Chicago Midway International (MDW) to Sofia (SOF)
Distance: 8,371 km
Average price: $1762
Chicago → Skopje
O'Hare International (ORD) to Skopje International (SKP)
Distance: 8,316 km
Average price: $1752
Chicago → Pristina
O'Hare International (ORD) to Pristina International (PRN)
Distance: 8,234 km
Average price: $1736
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Frequently Asked Questions
How long is the flight from Chicago to Sofia?
The flight time from Chicago (ORD) to Sofia (SOF) is approximately 10 hours and 57 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Chicago and Sofia?
The aerial distance between Chicago and Sofia is 8,366 kilometers (5,198 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Chicago to Sofia?
Several airlines operate flights between Chicago and Sofia, including American Airlines, United Airlines, Bulgaria Air and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Chicago to Sofia?
Based on historical data, February typically offers the lowest airfares for flights from Chicago to Sofia. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Sofia?
For the best prices on Chicago to Sofia flights, we recommend booking 118 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Chicago to Sofia?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of United States traveling to Bulgaria should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Chicago and Sofia?
Chicago operates on America/Chicago time zone, while Sofia is in the Europe/Sofia time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.