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$230+ Cheap flights from Riverside, CA to Sofia (SOF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SOF
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Riverside to Sofia

Cheapest flights from Riverside to Sofia
Explore the most affordable flight options available from Riverside to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Ticket deal was found by Cheapflights users on 2/2. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:15 pm
LAX
-
SOF
1 stop35h 35m
LOT
Fri 3/206:35 pm
SOF
-
LAX
1 stop35h 45m
LOT
Deal found 2/2$484
This CrystalTravel deal was found by Cheapflights users on 2/2. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:30 pm
LAX
-
SOF
1 stop19h 40m
Lufthansa
Wed 8/196:10 am
SOF
-
LAX
1 stop19h 05m
Lufthansa
Deal found 2/2$507
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:30 pm
LAX
-
SOF
1 stop14h 50m
Lufthansa
Wed 4/226:20 am
SOF
-
LAX
1 stop16h 50m
Lufthansa
Deal found 2/4$513
This Mytrip deal was found by Cheapflights users on 2/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:30 am
LAX
-
SOF
2 stops26h 10m
Multiple Airlines
Thu 5/76:30 am
SOF
-
LAX
1 stop16h 40m
Multiple Airlines
Deal found 2/3$515
This KAYAK deal was found by Cheapflights users on 2/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:55 pm
LAX
-
SOF
1 stop37h 35m
British Airways
Mon 5/118:10 pm
SOF
-
LAX
1 stop27h 35m
British Airways
Deal found 2/3$517
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:30 pm
LAX
-
SOF
2 stops20h 25m
Austrian Airlines
Thu 5/78:00 am
SOF
-
LAX
1 stop15h 05m
Austrian Airlines
Deal found 2/3$519
This United Airlines deal was found by Cheapflights users on 2/3. 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 5/45:30 pm
LAX
-
SOF
1 stop19h 40m
United Airlines
Wed 5/136:10 am
SOF
-
LAX
1 stop19h 05m
United Airlines
Deal found 2/3$520
This FlightHub deal was found by Cheapflights users on 2/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:30 pm
LAX
-
SOF
1 stop19h 40m
Lufthansa
Thu 4/236:30 am
SOF
-
LAX
1 stop16h 40m
Lufthansa
Deal found 2/2$522
This United Airlines deal was found by Cheapflights users on 2/3. 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 5/412:58 pm
LAX
-
SOF
2 stops24h 12m
United Airlines
Tue 5/126:10 am
SOF
-
LAX
1 stop17h 00m
United Airlines
Deal found 2/3$523
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:10 pm
LAX
-
SOF
1 stop34h 05m
Multiple Airlines
Wed 4/2212:55 pm
SOF
-
LAX
2 stops20h 49m
Multiple Airlines
Deal found 2/4$524

Find flight deals from Riverside to Sofia

Keep the following information in mind while searching for Riverside to Sofia flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$484
(Ticket)

One-way from

$230
(British Airways)

Popular in

June

Cheapest in

November

Average price

$636
Provider with most accurate pricing for Los Angeles-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Sofia flights.
Search Deals
From Riverside to Sofia
Search Deals
One-way flight from Riverside to Sofia
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($224 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside 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, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Riverside to Sofia that are best for you.

Fly from

Riverside

Fly to

Sofia

Route

Depart

Return

Price

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 5/4

5:30 pm-11:10 pm

1 stop19h 40m

Sofia

Wed 5/13

6:10 am-3:15 pm

1 stop19h 05m

$520

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 4/8

2:53 pm-11:10 pm

2 stops22h 17m

Sofia

Thu 4/23

6:30 am-1:10 pm

1 stop16h 40m

$533

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 3/4

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

Sun 3/8

6:05 am-3:15 pm

1 stop19h 10m

$534

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Thu 3/5

3:00 pm-10:45 pm

1 stop21h 45m

Sofia

Wed 3/18

6:10 am-2:05 pm

1 stop16h 55m

$545

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 3/4

2:20 pm-6:20 pm

2 stops18h 00m

Sofia

Fri 3/20

2:00 pm-11:59 pm

2 stops18h 59m

$549

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Sun 5/3

5:30 pm-11:10 pm

1 stop19h 40m

Sofia

Fri 10/9

6:20 am-1:10 pm

1 stop16h 50m

$549

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Sun 3/8

4:13 pm-10:45 pm

2 stops21h 32m

Sofia

Sat 3/14

2:00 pm-4:15 pm

1 stop35h 15m

$550

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 5/13

8:55 pm-1:25 pm

1 stop30h 30m

$230

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Tue 5/12

5:05 pm-8:30 pm

1 stop17h 25m

$230

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 5/11

9:15 am-11:10 pm

2 stops27h 55m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 19 results
1
2

Best time to book a flight from Riverside to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Riverside with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Riverside to Sofia

How far ahead should I book a flight from Riverside to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Sofia. Price data was last updated on January 30, 2026.

To ensure you get the cheapest price possible for a flight from Riverside to Sofia, you should look to book at least 36 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Riverside to Sofia?

Currently, February is the cheapest month in which you can book a flight from Riverside to Sofia (average of $478). Flying from Riverside to Sofia in June is currently the most expensive (average of $877). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sofia. Reviews last updated February 4, 2026.
Read reviews from past customers who have flown Austrian Airlines, United Airlines, and Turkish Airlines from Riverside to Sofia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.5
Good
896 reviews

Comfort

7.3

Overall

7.5

Boarding

7.6

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Austrian Airlines
7.5
Good
896 reviews
Austrian Airlines
7.5
Good
896 reviews

Comfort

7.3

Overall

7.5

Boarding

7.6

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
United Airlines
7.4
Good
9,235 reviews
Austrian Airlines
7.5
Good
896 reviews

Comfort

7.3

Overall

7.5

Boarding

7.6

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Turkish Airlines
7.3
Good
4,210 reviews
Austrian Airlines
7.5
Good
896 reviews

Comfort

7.3

Overall

7.5

Boarding

7.6

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Lufthansa
6.8
Okay
7,761 reviews
Austrian Airlines
7.5
Good
896 reviews

Comfort

7.3

Overall

7.5

Boarding

7.6

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
British Airways
6.7
Okay
7,716 reviews
Austrian Airlines
7.5
Good
896 reviews

Comfort

7.3

Overall

7.5

Boarding

7.6

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful

Related info for your journey

Find useful and relevant information for your journey from Riverside to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sofia from Riverside?

    If you book a flight to Sofia from Riverside, you will be flying to Sofia, which is the city’s only airport. Sofia (SOF) is located 4.2 mi from the center of Sofia. There are 0 flights from Riverside to Sofia per day from 8 different airlines.

  • How long is the flight from Riverside to Sofia?

    Departing from Riverside to Sofia will take you 19h 40m. Airlines will cover a distance of 6613 mi.

  • What are the cheapest airlines to fly from Riverside to Sofia one-way?

    The cheapest airlines for a one-way flight from Riverside to Sofia are KLM ($226), United Airlines ($236), and Lufthansa ($360).

  • Can I find deals for flights from Riverside to Sofia that include hotel bookings?

    Yes. In addition to deals on Riverside to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Sofia.

  • Can I find deals for business class flights from Riverside to Sofia?

    Yes. Cheapflights offers flight deals from Riverside to Sofia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Riverside to Sofia?

    Currently, February is the cheapest month in which you can book a flight from Riverside to Sofia (average of $478). Flying from Riverside to Sofia in June is currently the most expensive (average of $877). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 8 airlines flying from Riverside to Sofia

Discover the top 8 airlines that operate flights from Riverside to Sofia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$528Average$821FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$530Average$1,011FlexibilityNo cancel feeOn-time69%
KLMCheapest$547Average$676FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$566Average$913FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$572Average$699FlexibilityNo cancel feeOn-time77%
LOTCheapest$591Average$931FlexibilityNo cancel feeOn-time81%
ITA AirwaysCheapest$644Average$1,288FlexibilityNo cancel feeOn-time81%
Austrian AirlinesCheapest$646Average$928FlexibilityNo cancel feeOn-time78%

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