Flights from Chicago to Sofia and flight information

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Flight prices from Chicago to Sofia

Planning a trip from Chicago to Sofia and looking for the best fares? On Aviasurf you can find the latest prices for any day and choose the most convenient flight. Book a flight from Chicago to Sofia from $278. with departure on November 11, 2026.

Climate in Sofia and when to travel

The warmest months in Sofia are July and August, each with an average monthly air temperature of 21.8 °C. The coldest month in Sofia is January, with an average monthly air temperature of 0.2 °C. The months with the lowest average monthly precipitation in Sofia are August and September, at 39 mm each.

For the nearest observed departure in November, the climate normals are: average monthly air temperature 6.7 °C, monthly precipitation 40 mm, and daylight 9.6 hours.

Fare calendar for flights from Chicago to Sofia

Explore fare trends for flights Chicago — Sofia with our calendar. It helps you see ticket prices for each day of any month and optimize your travel budget. The tool makes finding the best deals even easier and more convenient.

Current flight offers from Chicago to Sofia

Below is a selection of tickets on the Chicago – Sofia route. Use our search to view all tickets on this route. For a more precise search, apply filters by airline, airports, flight duration, stops, baggage, cabin class, and departure or arrival time.

Cheapest fare with 2 stops from Chicago to Sofia

Found in the last 48 hours: a ticket from TAP Air Portugal. Departure from O'Hare International Airport (ORD) is scheduled for 11.11.2026 at 19:00. Arrival at Sofia airport Sofia Airport (SOF) is expected on 13.11.2026 at 22:25. Ticket price is $278. Flight time 43 hours and 25 minutes. No checked baggage Find the same ticket

Cheapest flight

TAP Air Portugal

TP 244

19:00

Chicago (ORD)

11.11.2026

ORD

SOF

43h 25m

with 2 stops

22:25

Sofia (SOF)

13.11.2026

No baggage

Airbus A330-900

Economy

$278

Find flight

General flight information from Chicago to Sofia

Straight-line distance between cities

8358 km

5193 miles

Flight time

12 h 55 min

Fastest observed itinerary with connections

Time difference

7 hours

Sofia is ahead of Chicago

See also:

Flights from Sofia to Chicago for the return trip
Tickets from Chicago to any destination
Fares from Sofia to any destination
Tickets from Bulgaria to any destination
Tickets from United States to any destination
Prices for flights to Chicago
Cheap tickets to Bulgaria
Find flights from Chicago to Bulgaria
Flights from Sofia to United States
Flights from United States to Bulgaria
Flights from Bulgaria to United States

Flight schedule from Chicago to Sofia

Airports for flights from Chicago to Sofia

The Chicago — Sofia route is served by the following airports:

Airports in Chicago

Airport	Distance to city center	Lowest fare	Note
O'Hare International Airport (ORD)	25 km	$278

Distances are straight-line distances to the city center.

Airports in Sofia

Airport	Distance to city center	Lowest fare	Note
Sofia Airport (SOF)		$278

Distances are straight-line distances to the city center.

Airlines on itineraries from Chicago to Sofia

Available itineraries from Chicago to Sofia involve 20 airlines; shown below: 12. United Airlines appears most often in the observed options.

United Airlines

Flight numbers by segment: UA 944 UA 9124 UA 970 UA 9850 UA 9832 UA 8837 UA 953 UA 9246 UA 8854 UA 8835

Lufthansa

Flight numbers by segment: LH 1426 LH 431 LH 9357 LH 1702 LH 9151 LH 4158 LH 435 LH 4230

Turkish Airlines

Flight numbers by segment: TK 186 TK 1027 TK 1127 TK 1029 TK 6

Bulgaria Air

Flight numbers by segment: FB 462 FB 852 FB 492 FB 438

British Airways

Flight numbers by segment: BA 294 BA 892 BA 1543 BA 296

Brussels Airlines

Flight numbers by segment: SN 8922 SN 9086 SN 9088

TAP Air Portugal

Flight numbers by segment: TP 244 TP 828

IndiGo

Flight numbers by segment: 6E 4123 6E 4032

SWISS

Flight numbers by segment: LX 1390 LX 9

American Airlines

Flight numbers by segment: AA 7003 AA 86

LOT Polish

Flight numbers by segment: LO 4 LO 633

Ryanair

Flight numbers by segment: FR 3400

Aircraft used on itinerary segments from Chicago to Sofia

Observed itinerary segments from Chicago to Sofia use 5 models of aircraft across 20 airlines.

Airbus A330-900

Airbus Industrie A320

Boeing 737-800 With Winglets

Boeing 787-9

Airbus A321 (sharklets)

Connecting cities for flights from Chicago to Sofia

Flying from Chicago to Sofia with a layover? Consider these connecting cities:

Lisbon

Milan

Istanbul

Flights from Chicago to Bulgaria

Below are the most popular routes from Chicago to Bulgaria at the lowest prices from airlines on different dates, with no commission.

TAP Air Portugal

TP 244

Flights Chicago — Sofia→

19:00

Chicago (ORD)

11.11.2026

ORD

SOF

43h 25m

with 2 stops

22:25

Sofia (SOF)

13.11.2026

No baggage

Airbus A330-900

Economy

from $278

Find flight

Alternative airport routes from Chicago to Sofia

The same city pair is also served through these departure or arrival airports.

O'Hare International Airport → Sofia
Observed fare from $278

Chicago Executive Airport → Sofia

Chicago Midway International Airport → Sofia

Chicago Rockford International Airport → Sofia

DuPage Airport → Sofia

Frequently asked questions about flights from Chicago to Sofia

Which airlines operated the lowest-priced itinerary we observed from Chicago to Sofia?

The lowest-priced itinerary we observed was $278 and included segments operated by TAP Air Portugal, Ryanair. This result is based on 2 distinct offers for the route. The offers were found on October 23, 2026.

On which date have we observed the lowest fare from Chicago to Sofia?

The lowest fare we observed was $278 for departure on November 11, 2026. This is an observation from 2 distinct offers, not a prediction of future prices. The offers were found on October 23, 2026.

How much does a flight from Chicago to Sofia cost?

Flight prices from Chicago to Sofia can vary greatly depending on airline, cabin class, season, and booking time. The lowest fare is $278.

Which airlines appear in available itineraries from Chicago to Sofia?

Available itineraries from Chicago to Sofia may include flight segments operated by TAP Air Portugal, Ryanair, Turkish Airlines, Uzbekistan Airways, IndiGo, United Airlines, Lufthansa, ITA Airways, Brussels Airlines, SWISS, Austrian Airlines, KLM, Bulgaria Air, British Airways, jetBlue, Air Serbia, American Airlines, Finnair, Iberia, LOT Polish.

How long is the flight from Chicago to Sofia?

The schedule data currently available to us does not list a nonstop flight from Chicago to Sofia. Recently observed itineraries with a plane change took from 12 hours and 55 minutes.

Are there direct flights from Chicago to Sofia?

The schedule data currently available to us does not show a nonstop flight from Chicago to Sofia. Other routings may be available — use our search to check options for your dates.

How much is a round-trip ticket Chicago — Sofia?

Round-trip fares from Chicago to Sofia vary by season, booking date, airline, and cabin class. The cheapest fare found is $536 with departure on November 18, 2026 and return on December 25, 2026. Use our search for the most up-to-date prices.

What are the carry-on baggage rules for flights from Chicago to Sofia?

Carry-on rules for flights from Chicago to Sofia vary by airline. Typically passengers can bring one carry-on bag and one personal item such as a laptop bag or handbag. Weight and size limits usually are around 7–10 kg and 55x40x20 cm. Liquids and some items have additional security rules. Always check the specific airline policy before you fly.

What are the rules for traveling with pets on flights from Chicago to Sofia?

Pet transport rules vary by airline. Generally pets must be in approved carriers. Some airlines allow small pets in the cabin, while larger pets must travel in the cargo hold. Health documents and certificates are required. Please confirm all requirements with your chosen airline.

How early should I arrive at the airport for a flight from Chicago to Sofia?

Arrive early — typically 2–3 hours before international flights and 1–2 hours before domestic flights. This allows time for check‑in, baggage drop, and security. Peak periods or certain destinations may require extra time.

What additional fees can occur when booking a ticket from Chicago to Sofia?

Additional fees can include seat selection, extra or special baggage, onboard meals, ticket changes or cancellations, early or late check‑in, and insurance. We do not add booking fees, but extra charges depend on the airline and fare rules.

Are there discounts or promotions for flights from Chicago to Sofia?

Discounts and promotions vary by airline and booking period. Many airlines run deals outside peak seasons or for early bookings. Check our site regularly for the latest offers, as availability can change quickly.

Are there night flights from Chicago to Sofia?

Yes, there are night flights from Chicago to Sofia operated by various airlines. These can be convenient for travelers looking to save daytime hours. Check current schedules and availability in our search.

Are there Wi‑Fi flights on the Chicago - Sofia route?

Wi‑Fi availability on Chicago - Sofia flights varies by airline and aircraft. Check details with specific airlines or use our search to see current options.

What are the most common transfer options on flights from Chicago to Sofia?

Flights from Chicago to Sofia can include various transfer options depending on the airline. Popular layover cities include Lisbon, Milan, Istanbul. Use our search to find the best transfer options.

What onboard services are provided on Chicago - Sofia flights?

Onboard services vary by airline. Typically passengers can expect entertainment, meals, and beverages, and some carriers offer Wi‑Fi or additional amenities. Check with the airline or use our search for details.

Which airports serve the Chicago - Sofia route?

The Chicago - Sofia route is usually served by these departure airports: O'Hare International Airport. Arrival is usually through these airports: Sofia Airport. Exact airport combinations depend on the airline and selected flight. Use our search for details.

What aircraft fly the Chicago - Sofia route?

Airlines operate various aircraft types on the Chicago - Sofia route. Examples include Airbus A330-900, Airbus Industrie A320, Boeing 737-800 With Winglets, Boeing 787-9, Airbus A321 (sharklets) and other models. Aircraft type depends on the carrier and specific flight. Use our search for up‑to‑date details.

Which connecting cities are common on the Chicago - Sofia route?

The Chicago - Sofia route may include different connecting cities, especially for non‑direct flights. Possible connections include Lisbon, Milan, Istanbul and others. Use our search to find the best option.