CHI - SOF

$288 Find Cheap Flights from Chicago to Sofia - Compare and Save

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Everything you should know

Cheapest round-trip
$704
Typical prices: $698-$1,133
British Airways
Sun 1/7Wed 1/17
ORD - SOF • 2 stops
Cheapest one-way
$288
Typical prices: $439-$679
Multiple Airlines
Thu 10/11
ORD - SOF • 2 stops
Nonstop flights
There are currently no direct flights between Chicago and Sofia. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 33% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $770 (round-trip)
Shortest trip • 12h 47m (one-way)
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Flight Deals

Cheap Flights from Chicago to Sofia (CHI-SOF)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Sofia

Thu, Jan 7 - Sun, Jan 17
British Airways Logo
3:52 pm - 7:20 pmORD  Chicago O'Hare Intl-SOF Sofia
19h 28m2 stops Dallas/Fort Worth London Heathrow
British Airways Logo
7:45 pm - 7:28 pmSOF  Sofia-ORD Chicago O'Hare Intl
31h 43m2 stops London Heathrow Newark
$704British Airways
Mon, Dec 14 - Mon, Jan 11
Austrian Airlines Logo
1:30 pm - 6:00 pmORD  Chicago O'Hare Intl-SOF Sofia
20h 30m2 stops Washington, D.C. Dulles Intl Vienna Intl
Austrian Airlines Logo
7:55 am - 5:03 pmSOF  Sofia-ORD Chicago O'Hare Intl
17h 08m2 stops Vienna Intl Washington, D.C. Dulles Intl
$705Austrian Airlines
Sat, Oct 17 - Sat, Oct 31
United Airlines Logo
6:06 pm - 11:40 amORD  Chicago O'Hare Intl-SOF Sofia
33h 34m2 stops Washington, D.C. Dulles Intl Vienna Intl
United Airlines Logo
2:10 pm - 2:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
31h 00m1 stop Frankfurt am Main
$706United Airlines
Sun, Oct 4 - Fri, Feb 26
LOT Logo
9:50 pm - 1:50 pmORD  Chicago O'Hare Intl-SOF Sofia
32h 00m1 stop Warsaw Frederic Chopin
LOT Logo
2:35 pm - 7:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
13h 20m1 stop Warsaw Frederic Chopin
$706LOT
Tue, Dec 29 - Fri, Jan 8
Multiple Airlines Logo
3:15 pm - 1:25 pmORD  Chicago O'Hare Intl-SOF Sofia
14h 10m1 stop Frankfurt am Main
Multiple Airlines Logo
7:55 am - 2:00 pmSOF  Sofia-ORD Chicago O'Hare Intl
14h 05m1 stop Vienna Intl
$706Multiple Airlines
Fri, Jan 22 - Sat, Jan 30
Austrian Airlines Logo
12:55 pm - 11:50 amORD  Chicago O'Hare Intl-SOF Sofia
14h 55m2 stops Washington, D.C. Dulles Intl Vienna Intl
Austrian Airlines Logo
7:55 am - 7:05 pmSOF  Sofia-ORD Chicago O'Hare Intl
19h 10m2 stops Vienna Intl Washington, D.C. Dulles Intl
$707Austrian Airlines
Mon, Dec 14 - Mon, Jan 11
Multiple Airlines Logo
1:30 pm - 11:50 amORD  Chicago O'Hare Intl-SOF Sofia
14h 20m2 stops Washington, D.C. Dulles Intl Vienna Intl
Multiple Airlines Logo
7:05 pm - 2:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
27h 05m1 stop Munich Franz Josef Strauss
$708Multiple Airlines
Thu, Oct 8 - Thu, Oct 22
LOT Logo
9:50 pm - 1:55 pmORD  Chicago O'Hare Intl-SOF Sofia
32h 05m1 stop Warsaw Frederic Chopin
LOT Logo
2:35 pm - 7:50 pmSOF  Sofia-ORD Chicago O'Hare Intl
13h 15m1 stop Warsaw Frederic Chopin
$710LOT
Tue, Oct 13 - Mon, Oct 19
British Airways Logo
7:05 pm - 8:30 pmORD  Chicago O'Hare Intl-SOF Sofia
17h 25m1 stop London Heathrow
British Airways Logo
8:10 pm - 1:50 pmSOF  Sofia-ORD Chicago O'Hare Intl
25h 40m1 stop London Heathrow
$710British Airways
Wed, Dec 30 - Sat, Jan 9
United Airlines Logo
6:00 pm - 1:15 pmORD  Chicago O'Hare Intl-SOF Sofia
11h 15m1 stop Munich Franz Josef Strauss
United Airlines Logo
6:00 am - 2:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
16h 10m1 stop Munich Franz Josef Strauss
$717United Airlines
Booking Insights

Price, demand and travel trends for Chicago to Sofia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Chicago to Sofia with more confidence.

How much is a round-trip flight from Chicago to Sofia?

Round-trip flights from Chicago to Sofia start at $704. Prices are typical for this route right now, with typical round-trip fares ranging from $698 to $1,133. The lowest price found in the past 5 days was $704 on British Airways.

What is the cheapest Chicago to Sofia flight route?

There's little price difference between Chicago to Sofia routes. They average around $894 round-trip, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Chicago to Sofia?

Sunday is the cheapest day of the week to fly from Chicago to Sofia, it is 6% cheaper than the average day. Thursday is the most expensive day with flight prices 3% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

•February is the cheapest month to fly from Chicago to Sofia at $595 round-trip.
•June ($1,109) and July ($1,096) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 86% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Chicago to Sofia the cheapest?

Flights from Chicago to Sofia are cheapest 7 weeks before departure. Booking in this window typically costs about 27% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Chicago to Sofia flights

Low season

February

Cheapest flight

$288
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Chicago O'Hare Intl Airport to Sofia

When to book flights from Chicago to Sofia

Are your dates flexible? Find out the best times to travel from Chicago to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Chicago to Sofia flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Does SOF have an on-site hotel?

    If you intend to stay at a hotel within SOF grounds, you're in luck, as the airport boasts the Ibis Sofia Airport. A 10min walk from Terminal A, this hotel boasts elite rooms. Thus, it's safe to say that your comfort is guaranteed at this hotel.

  • How can I move from Terminal 1 to 2 at SOF?

    In case you'd like to move from Terminal 1 to 2, or vice versa, you can board the free shuttle bus that connects these terminals. Daily, this bus operates from 5 am to 11 pm. It covers the route every 15min.

  • Are there nursing rooms at ORD?

    If you'd like to breastfeed your infant while waiting for your flight to Sofia at ORD, you need not worry about struggling to find a private space to feed your baby, as ORD features several nursing rooms. The said nursing rooms are near Gate B10 in Terminal 1, on the walkway between Gates E5 and F9 in Terminal 2, near the Urban Garden in Terminal 3's rotunda, and a short distance from Gate M14 in Terminal 5.

  • Where can I get assistance at MDW?

    If you need assistance at MDW, you should visit the airport's information desk, situated at the Main Entrance of the airport's terminal. At this desk, you'll get all the help you need, as it is manned by informed airport staff.

  • Which airports can I use when flying from Chicago to Sofia?

    Flights from Chicago to Sofia may depart from several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Flights usually arrive at Sofia (SOF).

  • What cabin classes can I book on flights from Chicago to Sofia?

    Three cabin classes are available on flights from Chicago to Sofia:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Chicago to Sofia pass through?

    One-stop flights from Chicago to Sofia most commonly connect through:

    • Istanbul (IST) - 32% of one-stop connections
    • Warsaw Frederic Chopin (WAW) - 21% of one-stop connections
    • Frankfurt am Main (FRA) - 17% of one-stop connections
    • Munich Franz Josef Strauss (MUC) - 9% of one-stop connections

    Istanbul (IST) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Chicago to Sofia?

    On the Chicago to Sofia route, being flexible with your departure day can save you up to 9%. Sunday is the cheapest day at $846 round-trip on average, while Thursday is the most expensive at $929: a $83 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in Sofia?

    Some of the most popular sights in Sofia are Vasil Levski National Stadium, National Palace of Culture and Central Sofia Market Hall. These are among the most viewed places in Sofia on KAYAK.

  • How expensive are last-minute Chicago to Sofia flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 10% above the route average of $894. Book 7 weeks before departure for the lowest fares.

  • How long is a flight from Chicago to Sofia?

    A nonstop flight from Chicago to Sofia takes 0h 00m, covering 5,189 miles.

  • Do I need a passport to fly from Chicago to Sofia?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Chicago to Sofia changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $704 to $6,795. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Chicago to Sofia looking right now?

    One-way fares from Chicago to Sofia are currently higher than usual. Average one-way flight prices are about $1,032, which is 110% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Chicago to Sofia?

    Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time at 12h 47m, compared with 13h 12m via Warsaw Frederic Chopin (WAW) and 13h 46m via Frankfurt am Main (FRA).

  • What is the time difference between Chicago and Sofia?

    Sofia is 8 hours ahead of Chicago (Eastern European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Sofia Airport (SOF)?

    Sofia Airport (SOF) hosts 5 major car rental companies, with daily rates starting from around $1 for economy cars. Top options include:
    • MEXRENTACAR
    • Easyrent
    • Top Rent a Car - Bulgaria
    • NU Car
    • Priceless

  • How much should I expect to pay for a Chicago to Sofia flight?

    Round-trip flights from Chicago to Sofia range from $698 to $1,133, with an average of $894 over the past 12 months. Anything below $698 counts as a good deal.

Your guide to booking Chicago to Sofia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Sunday departure instead of Thursday. On this route, Sunday flights average $846 - about $83 less than Thursday (9% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 27% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Chicago to Sofia trip for February. Fares historically average $595 round-trip in that month - typically $514 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Sofia Airport.
    - Hotel Premier Airport Sofia
    - ibis Sofia Airport
    - Avel Guest House
  • In Chicago, you can board your flight to Sofia at Chicago Midway International Airport (MDW) or O'Hare International Airport (ORD). If you'd like to fly cheaply to Sofia, ORD is the airport for you, as it serves the cheapest flights from Chicago to the Bulgarian capital. On the other, if you'd like to board your flight at an airport where you'll encounter the least traffic, MDW is the airport for you.
  • On the day you're set to fly to Sofia from ORD or MDW, you should get to your Chicago airport of choice at least 2h ahead of your flight. This will give you adequate time to go through the airport's security checkpoints in time for your flight. It will also give you enough time to check out the airport's points of interest.
  • All airlines traveling from ORD and MDW to Sofia Airport (SOF) offer elite-assisted travel services to passengers with disabilities, provided that the said passengers contact them at least 72h before their flight. Therefore, if you have special needs and require special in-flight services, you should contact the airline you plan on traveling with from your preferred Chicago airport to Sofia at least 72 before your flight.
  • To be able to purchase items and pay for services easily while in Sofia, you should convert some of your cash to Bulgaria's local currency at one of SOF's currency exchange sites run by ICE Exchange. Two are located in 2, while one is found in Terminal 1.
  • SOF features locations for car rentals like Avis, Budget, SIXT, Thrifty, Europcar, and Enterprise in Terminal 2. This being the case, if you'd like to hire a car once you land at SOF, you'll have a variety of car rental agencies to choose from.

More options for your flight from Chicago to Sofia

Complete your trip to Sofia with a hotel stay or car rental