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$257+ 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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SOF
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Sofia are usually found in November or February, booked 36 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap flight deals from Riverside to Sofia

Keep the following information in mind while searching for Riverside to Sofia flight deals. Data was last updated octubre 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$483
(Kiwi.com)

One-way from

$257
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$679
Provider with most accurate pricing for Los Angeles-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Sofia flights.
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From Riverside to Sofia
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One-way flight from Riverside to Sofia
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Highest demand for flights based on searches. 24% potential increase in price ($256 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 octubre 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
vie. 11/285:30 pmLAX - SOF
1 stop19h 15mLufthansa
vie. 12/126:10 amSOF - LAX
1 stop16h 55mLufthansa
Deal found 10/28$483
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
sáb. 11/295:30 pmLAX - SOF
1 stop19h 15mLufthansa
sáb. 12/136:05 amSOF - LAX
1 stop19h 10mLufthansa
Deal found 10/29$485
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
sáb. 11/295:30 pmLAX - SOF
1 stop14h 50mMultiple Airlines
sáb. 12/137:55 amSOF - LAX
2 stops17h 20mMultiple Airlines
Deal found 10/29$498
This CrystalTravel deal was found by Cheapflights users on 10/29. 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.
vie. 11/285:30 pmLAX - SOF
1 stop19h 15mLufthansa
vie. 12/56:10 amSOF - LAX
1 stop16h 55mLufthansa
Deal found 10/29$502
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/105:30 pmLAX - SOF
1 stop14h 50mMultiple Airlines
mar. 1/206:00 amSOF - LAX
2 stops26h 00mMultiple Airlines
Deal found 10/28$505
This Mytrip deal was found by Cheapflights users on 10/28. 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.
vie. 11/285:30 pmLAX - SOF
1 stop19h 15mMultiple Airlines
vie. 12/126:05 amSOF - LAX
2 stops25h 03mMultiple Airlines
Deal found 10/28$507
This Mytrip deal was found by Cheapflights users on 10/29. 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.
vie. 11/285:30 pmLAX - SOF
1 stop19h 15mMultiple Airlines
vie. 12/56:10 amSOF - LAX
2 stops25h 50mMultiple Airlines
Deal found 10/29$509
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/105:30 pmLAX - SOF
1 stop14h 50mMultiple Airlines
dom. 1/252:25 pmSOF - LAX
2 stops30h 07mMultiple Airlines
Deal found 10/28$513
This Mytrip deal was found by Cheapflights users on 10/29. 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.
jue. 11/275:30 pmLAX - SOF
1 stop19h 15mMultiple Airlines
mié. 12/106:05 amSOF - LAX
2 stops25h 23mMultiple Airlines
Deal found 10/29$514
This FlightHub deal was found by Cheapflights users on 10/28. 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.
mar. 12/92:18 pmLAX - SOF
2 stops18h 02mLufthansa
mar. 12/166:00 amSOF - LAX
1 stop17h 05mLufthansa
Deal found 10/28$525

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 octubre 30, 2025.
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

mié. 12/10

5:30 pm-6:20 pm

1 stop14h 50m

Sofia

mar. 1/20

6:00 am-10:00 pm

2 stops26h 00m

$505

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

mié. 12/10

5:30 pm-6:20 pm

1 stop14h 50m

Sofia

dom. 1/25

2:25 pm-10:32 am

2 stops30h 07m

$513

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

jue. 11/27

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

mié. 12/10

6:05 am-9:28 pm

2 stops25h 23m

$514

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

jue. 11/27

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

mié. 12/10

6:10 am-1:05 pm

1 stop16h 55m

$522

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

mié. 12/3

5:30 pm-6:20 pm

1 stop14h 50m

Sofia

vie. 12/12

6:10 am-1:05 pm

1 stop16h 55m

$522

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

lun. 1/26

2:15 pm-10:45 pm

2 stops22h 30m

Sofia

lun. 2/9

6:10 am-1:05 pm

1 stop16h 55m

$527

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

lun. 1/26

6:10 pm-6:20 pm

2 stops38h 10m

Sofia

lun. 2/9

6:10 am-9:08 pm

2 stops24h 58m

$530

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

jue. 1/15

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

lun. 1/19

6:10 am-1:05 pm

1 stop16h 55m

$530

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

jue. 1/15

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

lun. 1/19

6:05 am-3:15 pm

1 stop19h 10m

$532

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

lun. 12/29

7:00 am-1:15 pm

2 stops20h 15m

Sofia

mié. 1/14

6:10 am-1:05 pm

1 stop16h 55m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 17 results
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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 October 24, 2025.

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, November is the cheapest month in which you can book a flight from Riverside to Sofia (average of $522). Flying from Riverside to Sofia in June is currently the most expensive (average of $917). 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.

What is the cheapest time of day to fly from R1V to SOF?

Find hourly flight availability from Riverside to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.

When flying from Riverside to Sofia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 32% versus a flight in the evening.

What is the cheapest day to fly from Riverside to Sofia?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Riverside to Sofia flight should consider departing on Saturday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 octubre 30, 2025.
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
7.6
Good
862 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Overall

7.6

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Austrian Airlines
7.6
Good
862 reviews
Austrian Airlines
7.6
Good
862 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Overall

7.6

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
United Airlines
7.4
Good
8,998 reviews
Austrian Airlines
7.6
Good
862 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Overall

7.6

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Turkish Airlines
7.3
Good
4,031 reviews
Austrian Airlines
7.6
Good
862 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Overall

7.6

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Lufthansa
6.8
Okay
7,541 reviews
Austrian Airlines
7.6
Good
862 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Overall

7.6

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
British Airways
6.7
Okay
7,487 reviews
Austrian Airlines
7.6
Good
862 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Overall

7.6

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

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 15m. Airlines will cover a distance of 6613 mi.

  • 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, November is the cheapest month in which you can book a flight from Riverside to Sofia (average of $522). Flying from Riverside to Sofia in June is currently the most expensive (average of $917). 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

Browse thousands of different options on Cheapflights for your next trip

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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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$530Average$1,288FlexibilityNo cancel feeOn-time81%
LOTCheapest$535Average$966FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$569Average$833FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$572Average$710FlexibilityNo cancel feeOn-time77%
KLMCheapest$588Average$793FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$641Average$978FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$656Average$952FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$676Average$1,028FlexibilityNo cancel feeOn-time69%

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