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$271+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SOF
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Sofia are usually found in November or February, booked 31 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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$654
(KLM)

One-way from

$271
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$718
Provider with most accurate pricing for Los Angeles-Sofia flight deals.
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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 ($268 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This KLM deal was found by Cheapflights users on 4/1. 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.
Wed 4/238:15 amLAX - SOF
2 stops19h 45mKLM
Wed 5/77:00 amSOF - LAX
2 stops19h 00mKLM
Deal found 4/1$654
This Booking.com deal was found by Cheapflights users on 4/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1910:29 pmLAX - SOF
2 stops35h 51mBritish Airways
Wed 10/19:30 pmSOF - LAX
2 stops35h 50mBritish Airways
Deal found 4/1$656
This Booking.com deal was found by Cheapflights users on 4/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:30 pmLAX - SOF
1 stop19h 30mLufthansa
Mon 9/226:40 pmSOF - LAX
1 stop28h 20mLufthansa
Deal found 4/1$658
This Kiwi.com deal was found by Cheapflights users on 4/1. 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.
Fri 5/27:45 pmLAX - SOF
1 stop31h 00mMultiple Airlines
Fri 5/166:15 amSOF - LAX
2 stops46h 50mMultiple Airlines
Deal found 4/1$659
This FlightHub deal was found by Cheapflights users on 4/1. 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.
Thu 5/157:35 pmLAX - SOF
1 stop28h 30mSWISS
Mon 6/23:30 pmSOF - LAX
1 stop35h 00mSWISS
Deal found 4/1$668
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Sat 5/176:52 pmLAX - SOF
3 stops42h 08mUnited Airlines
Mon 6/212:45 pmSOF - LAX
1 stop36h 30mUnited Airlines
Deal found 4/1$674
This StudentUniverse deal was found by Cheapflights users on 4/1. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/46:40 pmLAX - SOF
2 stops19h 15mAustrian Airlines
Tue 8/196:55 pmSOF - LAX
2 stops32h 00mAustrian Airlines
Deal found 4/1$692
This Aeromexico deal was found by Cheapflights users on 4/1. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/235:15 pmLAX - SOF
1 stop34h 45mAir France
Wed 5/77:00 amSOF - LAX
1 stop21h 10mAir France
Deal found 4/1$694
This oojo deal was found by Cheapflights users on 4/1. 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.
Mon 9/1512:10 amLAX - SOF
1 stop34h 15mTurkish Airlines
Thu 10/99:15 pmSOF - LAX
1 stop24h 30mTurkish Airlines
Deal found 4/1$718
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Wed 5/289:30 pmLAX - SOF
1 stop30h 00mAmerican Airlines
Mon 6/98:00 pmSOF - LAX
1 stop31h 35mAmerican Airlines
Deal found 4/1$733
This Trip.com deal was found by Cheapflights users on 4/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2810:05 pmLAX - SOF
1 stop29h 45mLOT
Sun 10/126:40 pmSOF - LAX
1 stop29h 55mLOT
Deal found 4/1$787
This Air Canada deal was found by Cheapflights users on 4/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/312:20 pmLAX - SOF
2 stops20h 20mAir Canada
Tue 6/1012:45 pmSOF - LAX
2 stops18h 38mAir Canada
Deal found 4/1$823

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 April 2, 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

Wed 4/23

8:15 am-2:00 pm

2 stops19h 45m

Sofia

Wed 5/7

7:00 am-4:00 pm

2 stops19h 00m

$654

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Fri 9/19

10:29 pm-8:20 pm

2 stops35h 51m

Sofia

Wed 10/1

9:30 pm-11:20 pm

2 stops35h 50m

$656

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 9/8

5:30 pm-11:00 pm

1 stop19h 30m

Sofia

Mon 9/22

6:40 pm-1:00 pm

1 stop28h 20m

$658

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Fri 5/2

7:45 pm-12:45 pm

1 stop31h 00m

Sofia

Fri 5/16

6:15 am-7:05 pm

2 stops46h 50m

$659

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Thu 5/15

7:35 pm-10:05 am

1 stop28h 30m

Sofia

Mon 6/2

3:30 pm-4:30 pm

1 stop35h 00m

$668

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Sat 5/17

6:52 pm-11:00 pm

3 stops42h 08m

Sofia

Mon 6/2

12:45 pm-3:15 pm

1 stop36h 30m

$674

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 8/4

6:40 pm-11:55 pm

2 stops19h 15m

Sofia

Tue 8/19

6:55 pm-4:55 pm

2 stops32h 00m

$692

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 4/23

5:15 pm-2:00 pm

1 stop34h 45m

Sofia

Wed 5/7

7:00 am-6:10 pm

1 stop21h 10m

$694

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Mon 9/15

12:10 am-8:25 pm

1 stop34h 15m

Sofia

Thu 10/9

9:15 pm-11:45 am

1 stop24h 30m

$718

Los AngelesSofia

LAX - SOF

LAXSOF

Los Angeles

Wed 5/28

9:30 pm-1:30 pm

1 stop30h 00m

Sofia

Mon 6/9

8:00 pm-5:35 pm

1 stop31h 35m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 18 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 March 28, 2025.

To ensure you get the cheapest price possible for a flight from Riverside to Sofia, you should look to book at least 31 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 $632). Flying from Riverside to Sofia in June is currently the most expensive (average of $1,243). 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 April 2, 2025.

When flying from Riverside to Sofia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 Monday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sofia by month

Plan your trip to Sofia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

Plan your trip to Sofia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sofia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 2, 2025.
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,323 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
LOT
7.6
Good
1,065 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
771 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,572 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,425 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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.

  • 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 SWISS ($493), Lufthansa ($494), and United Airlines ($500).

  • 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 $632). Flying from Riverside to Sofia in June is currently the most expensive (average of $1,243). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$530Average$1,273FlexibilityNo cancel feeOn-time81%
KLMCheapest$588Average$820FlexibilityNo cancel feeOn-time75%
LOTCheapest$593Average$1,068FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$597Average$710FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$604Average$1,007FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$622Average$894FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$637Average$841FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$655Average$970FlexibilityNo cancel feeOn-time78%

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