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Cheap flights from Sioux Falls to Sofia from $779

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to Sofia departing on 2/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Sioux Falls to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:20 am - 1:15 pmFSD  Sioux Falls Joe Foss Field-SOF Sofia
17h 55m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 11:36 pmSOF  Sofia-FSD Sioux Falls Joe Foss Field
25h 11m2 stops Frankfurt am Main Chicago O'Hare Intl
$779United Airlines
Mon, Feb 1 - Thu, Feb 4
United Airlines Logo
3:16 pm - 1:15 pmFSD  Sioux Falls Joe Foss Field-SOF Sofia
13h 59m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 10:56 pmSOF  Sofia-FSD Sioux Falls Joe Foss Field
24h 31m2 stops Frankfurt am Main Denver Intl
$780United Airlines
Sun, Jan 10 - Tue, Jan 12
United Airlines Logo
7:40 am - 1:25 pmFSD  Sioux Falls Joe Foss Field-SOF Sofia
21h 45m3 stops Chicago O'Hare Intl Philadelphia Frankfurt am Main
United Airlines Logo
6:25 am - 8:46 pmSOF  Sofia-FSD Sioux Falls Joe Foss Field
22h 21m2 stops Frankfurt am Main Denver Intl
$792United Airlines
Sun, Jan 10 - Tue, Jan 12
United Airlines Logo
7:40 am - 1:25 pmFSD  Sioux Falls Joe Foss Field-SOF Sofia
21h 45m3 stops Chicago O'Hare Intl Philadelphia Frankfurt am Main
United Airlines Logo
6:25 am - 8:46 pmSOF  Sofia-FSD Sioux Falls Joe Foss Field
22h 21m2 stops Frankfurt am Main Denver Intl
$878United Airlines
Sun, Jan 10 - Tue, Jan 12

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United Airlines flights from Sioux Falls to Sofia

Our best United Airlines deals on Sioux Falls to Sofia flight tickets
United Airlines
Feb 1
FSD11:20 amSioux Falls Joe Foss Field
17h 55m
2 stops
SOF1:15 pmSofia
Feb 4
SOF6:25 amSofia
25h 11m
2 stops
FSD11:36 pmSioux Falls Joe Foss Field
$779
United Airlines
Jan 10
FSD3:16 pmSioux Falls Joe Foss Field
13h 59m
2 stops
SOF1:15 pmSofia
Jan 12
SOF6:25 amSofia
24h 31m
2 stops
FSD10:56 pmSioux Falls Joe Foss Field
$780
United Airlines
Jan 10
FSD7:40 amSioux Falls Joe Foss Field
21h 45m
3 stops
SOF1:25 pmSofia
Jan 12
SOF6:25 amSofia
22h 21m
2 stops
FSD8:46 pmSioux Falls Joe Foss Field
$792

momondo Fare Finder

 
Customize your flight search to find flights from Sioux Falls to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Sioux Falls to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsSofia

FSD Sioux Falls Joe Foss Field - SOF Sofia

FSDSOF

Sioux Falls Joe Foss Field

Mon 2/1

11:20 am-1:15 pm

2 stops17h 55m

Sofia

Thu 2/4

6:25 am-11:36 pm

2 stops25h 11m

$779
Quickest round-trip

Sioux FallsSofia

FSD Sioux Falls Joe Foss Field - SOF Sofia

FSDSOF

Sioux Falls Joe Foss Field

Sun 1/10

3:16 pm-1:15 pm

2 stops13h 59m

Sofia

Tue 1/12

6:25 am-10:56 pm

2 stops24h 31m

$780

Sioux FallsSofia

FSD Sioux Falls Joe Foss Field - SOF Sofia

FSDSOF

Sioux Falls Joe Foss Field

Sun 1/10

7:40 am-1:25 pm

3 stops21h 45m

Sofia

Tue 1/12

6:25 am-8:46 pm

2 stops22h 21m

$792

Sioux FallsSofia

FSD Sioux Falls Joe Foss Field - SOF Sofia

FSDSOF

Sioux Falls Joe Foss Field

Sun 1/10

7:40 am-1:25 pm

3 stops21h 45m

Sofia

Tue 1/12

6:25 am-8:46 pm

2 stops22h 21m

$878

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Sioux Falls to Sofia

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux Falls to Sofia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sioux Falls to Sofia (FSD to SOF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sioux Falls to Sofia

Fastest flight time

13h 59m

Direct flights

None
The fastest flight from Sioux Falls to Sofia takes 13h 59m
There are no direct flights from Sioux Falls to Sofia. There are no popular flight routes from Sioux Falls to Sofia.
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Frequently asked questions about flying from Sioux Falls to Sofia

  • How far is Sioux Falls Joe Foss Field to Sofia by plane?

    The straight-line distance from Sioux Falls Joe Foss Field to Sofia is 5416.0 mi. By plane, this route typically takes 13h 59m.

  • When did momondo last update prices for flights from Sioux Falls Joe Foss Field Airport to Sofia Airport?

    Prices for flights from Sioux Falls Joe Foss Field Airport to Sofia Airport were last updated today.

  • How old do you have to be to fly from Sioux Falls Joe Foss Field Airport to Sofia Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux Falls Joe Foss Field Airport to Sofia Airport.

  • What documentation or ID do you need to fly to Sofia Airport?

    The necessary travel and health documents for your Sofia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Sioux Falls to Sofia

  • How do I get Price Alerts for flights from Sioux Falls to Sofia?

    Search flight deals from Sioux Falls to Sofia. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Sioux Falls to Sofia with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Bansko
Borovets
Velingrad
Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Sioux Falls to Sofia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sioux Falls to Sofia for you.

Can I find flights from Sioux Falls to Sofia with flexible booking policies on momondo?

Yes. All flights to Sofia from Sioux Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Sioux Falls to Sofia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sofia from Sioux Falls.

I’m not ready to book a flight from Sioux Falls to Sofia right now. Can momondo alert me if prices change?

Price alerts on flights to Sofia from Sioux Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cabin classes currently available on flights to Sofia

List of cabin classes available on flights landing in Sofia. Availability may vary depending on flight origin and airline.
First Class to Sofia
Business Class to Sofia