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Bulgaria

$292+ Cheap flights from Riverside, CA to Bulgaria

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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SOF
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap flight deals from Riverside to Bulgaria

Cheapest flights from Riverside to Bulgaria
Explore the most affordable flight options available from Riverside to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This FlightHub deal was found by Cheapflights users on 12/15. 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.
Sun 12/287:00 pmLAX - VAR
2 stops34h 15mAustrian Airlines
Sun 1/114:00 pmVAR - LAX
2 stops33h 15mAustrian Airlines
Deal found 12/15$703
This KLM deal was found by Cheapflights users on 12/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:35 amLAX - SOF
2 stops19h 30mMultiple Airlines
Thu 1/157:10 amSOF - LAX
1 stop18h 55mMultiple Airlines
Deal found 12/17$716
This KLM deal was found by Cheapflights users on 12/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:35 amLAX - SOF
2 stops19h 30mKLM
Thu 1/157:00 amSOF - LAX
2 stops19h 05mKLM
Deal found 12/17$720
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Sun 12/286:45 pmLAX - VAR
1 stop15h 50mTurkish Airlines
Sun 1/1110:00 amVAR - LAX
1 stop35h 10mTurkish Airlines
Deal found 12/15$733
This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:10 pmLAX - SOF
1 stop29h 05mSWISS
Thu 1/154:00 pmSOF - LAX
1 stop34h 35mSWISS
Deal found 12/16$842
This Ovago deal was found by Cheapflights users on 12/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:00 pmLAX - SOF
2 stops32h 15mLufthansa
Thu 1/156:05 amSOF - LAX
2 stops22h 42mLufthansa
Deal found 12/16$870
This Gurufare deal was found by Cheapflights users on 12/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 pmLAX - VAR
2 stops34h 15mMultiple Airlines
Sun 1/115:40 pmVAR - LAX
1 stop29h 25mMultiple Airlines
Deal found 12/15$885
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Thu 12/255:30 pmLAX - SOF
1 stop33h 45mMultiple Airlines
Wed 1/78:55 pmSOF - LAX
2 stops51h 30mMultiple Airlines
Deal found 12/15$1,222
This Cheapflightsfares deal was found by Cheapflights users on 12/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:30 pmLAX - SOF
2 stops20h 25mAustrian Airlines
Wed 1/77:55 amSOF - LAX
2 stops21h 14mAustrian Airlines
Deal found 12/15$1,235
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:59 pmLAX - SOF
2 stops34h 11mMultiple Airlines
Mon 12/225:25 pmSOF - LAX
1 stop35h 05mMultiple Airlines
Deal found 12/16$1,308
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Wed 12/175:30 pmLAX - VAR
2 stops35h 45mAustrian Airlines
Fri 12/264:00 pmVAR - LAX
2 stops57h 15mAustrian Airlines
Deal found 12/15$1,663
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/224:10 pmLAX - SOF
2 stops35h 35mUnited Airlines
Wed 1/76:10 amSOF - LAX
2 stops35h 11mUnited Airlines
Deal found 12/17$1,807

Find flight deals from Riverside to Bulgaria

Keep the following information in mind while searching for Riverside to Bulgaria flight deals. Data was last updated December 17, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$476
(Kiwi.com)

One-way from

$292
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$794
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 Bulgaria
Search Deals
One-way flight from Riverside to Bulgaria
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($263 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Bulgaria 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 December 17, 2025.
Use the filters below to find and compare flights from Riverside to Bulgaria that are best for you.

Fly from

Riverside

Fly to

Bulgaria

Route

Depart

Return

Price

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Sat 1/17

5:30 pm-6:20 pm

1 stop14h 50m

Sofia

Sat 1/31

6:25 am-10:59 pm

2 stops26h 34m

$483

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 1/19

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

Wed 2/4

6:10 am-1:05 pm

1 stop16h 55m

$509

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 1/19

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

Wed 2/4

6:10 am-10:00 pm

2 stops25h 50m

$512

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Tue 4/14

5:30 pm-11:10 pm

1 stop19h 40m

Sofia

Thu 5/7

6:30 am-1:10 pm

1 stop16h 40m

$520

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 1/14

5:30 pm-6:20 pm

1 stop14h 50m

Sofia

Wed 1/21

6:10 am-1:05 pm

1 stop16h 55m

$520

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Thu 2/12

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

Sun 2/22

6:05 am-1:05 pm

2 stops17h 00m

$526

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Thu 1/22

5:30 pm-10:45 pm

1 stop19h 15m

Sofia

Mon 1/26

6:10 am-1:05 pm

1 stop16h 55m

$531

Los AngelesVarna

LAX - VAR

LAXVAR

Los Angeles

Sun 12/28

7:00 pm-3:15 pm

2 stops34h 15m

Varna

Sun 1/11

4:00 pm-3:15 pm

2 stops33h 15m

$703

Los AngelesVarna

LAX - VAR

LAXVAR

Los Angeles

Sun 12/28

6:45 pm-8:35 pm

1 stop15h 50m

Varna

Sun 1/11

10:00 am-11:10 am

1 stop35h 10m

$733

Los AngelesVarna

LAX - VAR

LAXVAR

Los Angeles

Wed 1/21

1:05 pm-8:35 pm

1 stop21h 30m

Varna

Sun 1/25

10:00 am-4:50 pm

1 stop16h 50m

$793

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 19 results
1
2

Best time to book a flight from Riverside to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria 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 Bulgaria

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

Currently, November is the cheapest month in which you can book a flight from Riverside to Bulgaria (average of $489). Flying from Riverside to Bulgaria in June is currently the most expensive (average of $914). 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 BG?

Find hourly flight availability from Riverside to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 17, 2025.

When flying from Riverside to Bulgaria, 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 35% versus a flight in the evening.

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

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

Travelers seeking maximum savings on their Riverside to Bulgaria flight should consider departing on Monday evenings 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 Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated December 17, 2025.
Peruse reviews from past customers who have flown with Austrian Airlines, United Airlines, and Turkish Airlines from Riverside to Bulgaria to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
879 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Boarding

7.6

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
879 reviews
Austrian Airlines
7.6
Good
879 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Boarding

7.6

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
9,091 reviews
Austrian Airlines
7.6
Good
879 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Boarding

7.6

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
4,105 reviews
Austrian Airlines
7.6
Good
879 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Boarding

7.6

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
7,634 reviews
Austrian Airlines
7.6
Good
879 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Boarding

7.6

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
7,585 reviews
Austrian Airlines
7.6
Good
879 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Boarding

7.6

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 Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Riverside to Bulgaria?

    Lufthansa, Austrian Airlines, and Turkish Airlines can get you from Riverside to Bulgaria in just under 14h 50m. Your travel time can differ by up to 19h 25m. Airlines will cover a distance of 6613 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $429. Austrian Airlines flights start at $461 while deals on KLM start at $469 one-way.

  • What are the most popular routes from Riverside to Bulgaria?

    When deciding which route to take from Riverside to Bulgaria consider Los Angeles - Sofia, Los Angeles - Varna or Los Angeles - Bourgas as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Riverside to Bulgaria 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 Bulgaria?

    Currently, November is the cheapest month in which you can book a flight from Riverside to Bulgaria (average of $489). Flying from Riverside to Bulgaria in June is currently the most expensive (average of $914). 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 10 airlines flying from Riverside to Bulgaria

Discover the top 10 airlines that operate flights from Riverside to Bulgaria. 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 December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$530Average$1,286FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$532Average$1,002FlexibilityNo cancel feeOn-time69%
LOTCheapest$535Average$931FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$535Average$830FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$566Average$947FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$572Average$921FlexibilityNo cancel feeOn-time77%
KLMCheapest$588Average$793FlexibilityNo cancel feeOn-time75%
Austrian AirlinesCheapest$656Average$854FlexibilityNo cancel feeOn-time78%
Aer LingusCheapest$796Average$1,173FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$819Average$1,165FlexibilityNo cancel feeOn-time79%

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