SOF - ORD

£452 Find Cheap Flights from Sofia to Chicago – Compare and Save

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Everything you should know

Cheapest return flight
£624
Typical prices: £549-£659
British Airways
Fri 19/10Thu 6/12
SOF - ORD • 1 stop
Cheapest one-way flight
£452
Typical prices: £478-£621
JetBlue
Tue 30/10
SOF - ORD • 1 stop
Direct flights
Not available
There are currently no direct flights between Sofia and Chicago O'Hare Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
16 weeks
in advance
Our data shows that travellers who book at least 16 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 10% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
London Heathrow (LHR)
Cheapest • Avg £463 (return)
Vienna Intl (VIE)
Shortest trip • 12h 49m (one-way)
Insights
Insights
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Chicago O'Hare Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sofia to O'Hare Intl (SOF-ORD)

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

Recent return flight deals from Sofia to O'Hare Intl

Mon, 19 Oct - Sun, 6 Dec
British Airways Logo
20:10 - 18:15SOF  Sofia-ORD Chicago O'Hare Intl
30h 05m1 stop London Heathrow
British Airways Logo
09:00 - 16:20ORD  Chicago O'Hare Intl-SOF Sofia
23h 20m2 stops Charlotte Douglas London Heathrow
£624British Airways
Wed, 14 Oct - Tue, 1 Dec
British Airways Logo
21:25 - 22:00SOF  Sofia-ORD Chicago O'Hare Intl
32h 35m2 stops London Heathrow Washington, D.C. Dulles Intl
British Airways Logo
21:50 - 20:10ORD  Chicago O'Hare Intl-SOF Sofia
14h 20m1 stop London Heathrow
£628British Airways
Mon, 19 Oct - Tue, 8 Dec
British Airways Logo
20:10 - 22:00SOF  Sofia-ORD Chicago O'Hare Intl
33h 50m2 stops London Heathrow Washington, D.C. Dulles Intl
British Airways Logo
17:10 - 20:10ORD  Chicago O'Hare Intl-SOF Sofia
19h 00m1 stop London Heathrow
£629British Airways
Mon, 15 Feb - Mon, 8 Mar
British Airways Logo
17:15 - 19:28SOF  Sofia-ORD Chicago O'Hare Intl
34h 13m2 stops London Heathrow Newark
British Airways Logo
16:26 - 20:10ORD  Chicago O'Hare Intl-SOF Sofia
43h 44m2 stops New York John F Kennedy Intl London Heathrow
£631British Airways
Mon, 15 Feb - Mon, 8 Mar
British Airways Logo
17:15 - 18:45SOF  Sofia-ORD Chicago O'Hare Intl
33h 30m1 stop London Heathrow
British Airways Logo
17:55 - 20:10ORD  Chicago O'Hare Intl-SOF Sofia
42h 15m2 stops Newark London Heathrow
£632British Airways
Tue, 3 Nov - Mon, 30 Aug
Multiple Airlines Logo
06:25 - 13:10SOF  Sofia-ORD Chicago O'Hare Intl
14h 45m1 stop Frankfurt am Main
Multiple Airlines Logo
14:20 - 12:40ORD  Chicago O'Hare Intl-SOF Sofia
14h 20m1 stop Zurich
£636Multiple Airlines
Tue, 13 Oct - Wed, 9 Dec
Multiple Airlines Logo
08:00 - 13:20SOF  Sofia-ORD Chicago O'Hare Intl
13h 20m1 stop Vienna Intl
Multiple Airlines Logo
18:00 - 13:15ORD  Chicago O'Hare Intl-SOF Sofia
11h 15m1 stop Munich Franz Josef Strauss
£639Multiple Airlines
Fri, 23 Oct - Fri, 27 Nov
Lufthansa Logo
14:10 - 19:55SOF  Sofia-ORD Chicago O'Hare Intl
13h 45m1 stop Frankfurt am Main
Lufthansa Logo
18:00 - 13:15ORD  Chicago O'Hare Intl-SOF Sofia
11h 15m1 stop Munich Franz Josef Strauss
£639Lufthansa
Mon, 12 Oct - Mon, 7 Dec
United Airlines Logo
06:20 - 12:55SOF  Sofia-ORD Chicago O'Hare Intl
14h 35m1 stop Frankfurt am Main
United Airlines Logo
18:10 - 23:00ORD  Chicago O'Hare Intl-SOF Sofia
20h 50m1 stop Frankfurt am Main
£640United Airlines
Tue, 13 Oct - Thu, 10 Dec
United Airlines Logo
06:10 - 12:55SOF  Sofia-ORD Chicago O'Hare Intl
14h 45m1 stop Frankfurt am Main
United Airlines Logo
18:00 - 13:15ORD  Chicago O'Hare Intl-SOF Sofia
11h 15m1 stop Munich Franz Josef Strauss
£641United Airlines
Booking Insights

Price, demand, and travel trends for Sofia to Chicago O'Hare Intl Airport flights

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

How much is a return flight from Sofia to Chicago O'Hare Intl Airport?

Return flights from Sofia to Chicago O'Hare Intl Airport start at £624. Prices are typical for this route right now, with typical return fares ranging from £549 to £659. The lowest price found in the past 5 days was £624 on British Airways.

What's the cheapest day of the week to fly from Sofia to Chicago O'Hare Intl Airport?

Monday is the cheapest day of the week to fly from Sofia to Chicago O'Hare Intl Airport and is 5% cheaper than the average day. Sunday is the most expensive day with flight prices 18% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Sofia to Chicago O'Hare Intl Airport?

•November is the cheapest month to fly from Sofia to Chicago O'Hare Intl Airport at £539 return.
•August (£659) and July (£648) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 22% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Sofia to Chicago O'Hare Intl Airport the cheapest?

Flights from Sofia to Chicago O'Hare Intl Airport are cheapest 16 weeks before departure. Booking in this window typically costs about 18% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Sofia to Chicago O'Hare Intl Airport flights

Low season

July

Cheapest flight

£452
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flights from Sofia to Chicago O'Hare Intl Airport

When to book flights from Sofia to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Sofia to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Sofia to Chicago O'Hare Intl Airport flight questions, answered

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

  • Which cabin classes can I book on flights from Sofia to Chicago O'Hare Intl Airport?

    Only Economy class is available on flights from Sofia to Chicago O'Hare Intl Airport.

  • How long is a flight from Sofia to Chicago O'Hare Intl Airport?

    A direct flight from Sofia to Chicago O'Hare Intl Airport takes 0h 00m, covering 5,194 miles.

  • Do I need a passport to fly from Sofia to Chicago O'Hare Intl Airport?

    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.

  • How much should I expect to pay for a Sofia to Chicago O'Hare Intl Airport flight?

    Return flights from Sofia to Chicago O'Hare Intl Airport range from £549 to £659, with an average of £598 over the past 12 months. Anything below £549 counts as a good deal.

  • How expensive are last-minute Sofia to Chicago O'Hare Intl Airport flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 6% above the route average of £598. Book 16 weeks before departure for the lowest fares.

  • Have flight prices from Sofia to Chicago O'Hare Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £624 to £2,741. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Sofia to Chicago O'Hare Intl Airport looking right now?

    One-way fares from Sofia to Chicago O'Hare Intl Airport are currently in line with typical prices for this route. Average one-way fares are about £557.

  • Which car hire options are available at Chicago O'Hare Intl Airport (ORD)?

    Chicago O'Hare Intl Airport (ORD) hosts 5 major car hire companies, with daily rates starting from around £13 for economy cars. Top options include:
    • Routes Car & Truck Rentals
    • Europcar
    • Hertz
    • Dollar
    • Ace

  • Which airports can I use when flying from Sofia to Chicago O'Hare Intl Airport?

    Flights from Sofia to Chicago O'Hare Intl Airport usually depart from Sofia (SOF) and arrive at Chicago O'Hare Intl (ORD).

  • Which airports do connecting flights from Sofia to Chicago O'Hare Intl Airport pass through?

    One-stop flights from Sofia to Chicago O'Hare Intl Airport most commonly connect through:

    • Warsaw Frederic Chopin (WAW) – 34% of one-stop connections
    • Istanbul (IST) – 22% of one-stop connections
    • Frankfurt am Main (FRA) – 18% of one-stop connections
    • Amsterdam Schiphol (AMS) – 10% of one-stop connections

    Warsaw Frederic Chopin (WAW) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Sofia to Chicago O'Hare Intl Airport?

    Yes. Being flexible with your travel dates can save you up to 20% on the Sofia to Chicago O'Hare Intl Airport route. Monday is the cheapest departure day at £571 return on average, while Sunday is the most expensive at £707, a difference of £136. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from Sofia to Chicago O'Hare Intl Airport?

    Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time of 12h 49m, compared to 13h 15m via Warsaw Frederic Chopin (WAW) and 13h 34m via Munich Franz Josef Strauss (MUC).

  • What is the time difference between Sofia and Chicago O'Hare Intl Airport?

    Chicago O'Hare Intl Airport is 8 hours behind Sofia (Central Time vs Eastern European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Chicago O'Hare Intl Airport?

    Some of the most popular sights in Chicago O'Hare Intl Airport are Grant Park, Magnificent Mile, and United Center. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

Your guide to booking Sofia to Chicago O'Hare Intl Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure instead of Sunday. On this route, Monday flights average £571 – about £136 less than Sunday (19% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 16 weeks before you fly. On this route, that window historically saves about 18% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Sofia to Chicago O'Hare Intl Airport trip for November. Fares historically average £539 return in that month – typically £120 less than the most expensive month, which is August (based on the last 12 months).

More options for your flight from Sofia to O'Hare Intl

Complete your trip to Chicago with a hotel stay or car hire

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