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Sofia

Find cheap United Airlines flights to Sofia

RDU — SOF
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to Sofia

Cheapest United Airlines flights from USA to Sofia
Explore the most affordable United Airlines flight options available from USA to Sofia. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:15 pm
EWR
-
SOF
1 stop18h 25m
United Airlines
Wed 9/912:55 pm
SOF
-
EWR
2 stops18h 04m
United Airlines
Deal found 7/25$817
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:30 pm
EWR
-
SOF
1 stop19h 45m
United Airlines
Tue 8/186:10 am
SOF
-
EWR
2 stops22h 49m
United Airlines
Deal found 7/27$832
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:46 am
SFO
-
SOF
2 stops21h 54m
United Airlines
Wed 9/96:20 am
SOF
-
SFO
1 stop16h 20m
United Airlines
Deal found 7/25$833

Flights to Sofia with United Airlines at a glance

Find detailed information about United Airlines flights from USA to Sofia. Explore the options provided by United Airlines to plan your journey from USA to Sofia. Data last updated July 27, 2026.

Popular in

June

Cheapest in

November

Average price

$757

Round-trip from

$745

One-way from

$354
Highest demand for flights to Sofia with United Airlines; 25% potential price increase.
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Best time to find cheap flights to Sofia with United Airlines; 4% potential price drop.
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Average price for flights to Sofia with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 10/27-11/10
  • 3 total stops
  • 32h 10m total
  • USA to Sofia
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United Airlines
  • United Airlines
  • 12/9
  • 2 total stops
  • 21h 05m total
  • USA to Sofia
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Cheapflights Insights

Find cheap United Airlines flights to Sofia

How long is the flight to Sofia with United Airlines?

On average, United Airlines flights from the United States to Sofia take 12 hours 45 minutes. Flights to Sofia from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

When is the best time to book a flight to Sofia with United Airlines?

The best time to book a flight to Sofia with United Airlines is 87 days before departure. On average, fares are higher if you book 60 days before departure.

FAQs about flights to Sofia with United Airlines

  • Which airport do United Airlines flights arrive at when travelling to Sofia?

    United Airlines flights on this route tend to land at Sofia Airport.

  • Is United Airlines the cheapest airline for a flight to Sofia?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Sofia tends to be with British Airways.

  • Are there alternative airlines other than United Airlines that fly to Sofia?

    Lufthansa, Turkish Airlines and KLM all fly to Sofia and offer an alternative to United Airlines.

  • How much is a flight to Sofia with United Airlines?

    The average price for a return flight with United Airlines is $926; with a one-way flight around $528.

See more FAQs

Reviews of United Airlines

See what Cheapflights users have to say about their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Popular United Airlines flights

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