$230+ 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 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
1 adult, Economy
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Find cheap flights from Riverside to Bulgaria with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Riverside to BulgariaExplore 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 February 4, 2026.
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 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![LOT logo]()
$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![Lufthansa logo]()
$507
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![Multiple Airlines logo]()
$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![British Airways logo]()
$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![Austrian Airlines logo]()
$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![United Airlines logo]()
$520
This FlightHub 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 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 2/3![Lufthansa logo]()
$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![United Airlines logo]()
$523
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:30 pm
LAX
- SOF
1 stop15h 10m
Lufthansa
Wed 4/226:20 am
SOF
- LAX
1 stop16h 50m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$525
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:00 am
LAX
- SOF
2 stops19h 10m
United Airlines
Wed 8/196:10 am
SOF
- LAX
1 stop19h 05m
United Airlines
Deal found 2/2![United Airlines logo]()
$526
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/82:13 pm
LAX
- SOF
2 stops18h 27m
Lufthansa
Thu 4/236:30 am
SOF
- LAX
1 stop16h 40m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$527
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.
Tue 4/285:30 pm
LAX
- VAR
1 stop17h 15m
Lufthansa
Mon 5/114:00 pm
VAR
- LAX
2 stops31h 10m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$567
Best flights from Riverside to BulgariaDiscover carefully curated flight deals from Riverside to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
Discover carefully curated flight deals from Riverside to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Tue 3/35:30 pm
LAX
- SOF
1 stop14h 50m
Lufthansa
Fri 3/202:00 pm
SOF
- LAX
2 stops18h 59m
Lufthansa
Deal found 2/1![Lufthansa logo]()
$531
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Wed 3/45:30 pm
LAX
- SOF
1 stop19h 15m
United Airlines
Wed 3/186:10 am
SOF
- LAX
1 stop16h 55m
United Airlines
Deal found 2/1![United Airlines logo]()
$533
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 5/43:05 pm
LAX
- VAR
1 stop14h 10m
Austrian Airlines
Wed 5/134:00 pm
VAR
- LAX
1 stop31h 05m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$661
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:30 pm
LAX
- VAR
2 stops29h 05m
Multiple Airlines
Thu 5/144:00 pm
VAR
- LAX
1 stop31h 05m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$688
This eDestinos deal was found by Cheapflights users on 2/1. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/82:13 pm
LAX
- SOF
2 stops18h 27m
Lufthansa
Thu 4/232:10 pm
SOF
- LAX
2 stops19h 48m
Lufthansa
Deal found 2/1![Lufthansa logo]()
$533
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.
Wed 4/85:30 pm
LAX
- SOF
1 stop19h 40m
United Airlines
Thu 4/236:30 am
SOF
- LAX
1 stop16h 40m
United Airlines
Deal found 2/3![United Airlines logo]()
$533
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Wed 3/45:30 pm
LAX
- SOF
1 stop14h 50m
United Airlines
Sun 3/86:05 am
SOF
- LAX
1 stop19h 10m
United Airlines
Deal found 1/31![United Airlines logo]()
$535
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1211:40 am
LAX
- BOJ
2 stops24h 50m
Aer Lingus
Tue 7/1411:25 pm
BOJ
- LAX
1 stop29h 00m
Aer Lingus
Deal found 2/3![Aer Lingus logo]()
$1,214
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.
Tue 4/285:30 pm
LAX
- VAR
1 stop17h 15m
Lufthansa
Tue 5/124:00 pm
VAR
- LAX
2 stops33h 15m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$568
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/51:15 pm
LAX
- SOF
2 stops23h 30m
United Airlines
Thu 3/196:00 am
SOF
- LAX
1 stop17h 05m
United Airlines
Deal found 2/1![United Airlines logo]()
$538
This Austrian 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:05 pm
LAX
- VAR
1 stop14h 10m
Austrian Airlines
Wed 5/134:00 pm
VAR
- LAX
1 stop31h 05m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$663
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.
Tue 4/285:30 pm
LAX
- VAR
1 stop17h 15m
Lufthansa
Fri 5/159:45 am
VAR
- LAX
1 stop15h 30m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$593
This Austrian 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:05 pm
LAX
- VAR
1 stop14h 10m
Austrian Airlines
Thu 5/144:00 pm
VAR
- LAX
1 stop31h 05m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$663
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.
Tue 4/283:05 pm
LAX
- VAR
2 stops19h 40m
Lufthansa
Sun 5/104:00 pm
VAR
- LAX
2 stops57h 15m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$616
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/145:30 pm
LAX
- VAR
2 stops35h 45m
Austrian Airlines
Sat 3/74:00 pm
VAR
- LAX
2 stops36h 27m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$710
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.
Wed 4/293:05 pm
LAX
- VAR
2 stops31h 55m
Lufthansa
Sun 5/104:00 pm
VAR
- LAX
2 stops57h 15m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$626
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 5/45:30 pm
LAX
- VAR
2 stops35h 45m
Lufthansa
Fri 5/159:45 am
VAR
- LAX
2 stops24h 14m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$670
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 6/158:10 pm
LAX
- BOJ
1 stop16h 25m
Aer Lingus
Tue 7/1411:25 pm
BOJ
- LAX
1 stop29h 00m
Aer Lingus
Deal found 2/3![Aer Lingus logo]()
$1,224
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.
Fri 5/15:30 pm
LAX
- VAR
2 stops29h 10m
Lufthansa
Wed 9/169:30 pm
VAR
- LAX
2 stops48h 19m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$713
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:30 pm
LAX
- BOJ
2 stops28h 55m
Multiple Airlines
Sun 7/121:05 pm
BOJ
- LAX
1 stop34h 00m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$1,296
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.
Wed 6/108:10 pm
LAX
- BOJ
1 stop16h 25m
Aer Lingus
Sat 7/1111:20 pm
BOJ
- LAX
1 stop29h 05m
Aer Lingus
Deal found 2/3![Aer Lingus logo]()
$1,253
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.
Fri 6/128:10 pm
LAX
- BOJ
1 stop16h 20m
Aer Lingus
Thu 7/911:25 pm
BOJ
- LAX
1 stop29h 00m
Aer Lingus
Deal found 2/3![Aer Lingus logo]()
$1,253
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/123:05 pm
LAX
- BOJ
1 stop17h 30m
Austrian Airlines
Sun 7/121:05 pm
BOJ
- LAX
1 stop34h 00m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$1,279
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1211:40 am
LAX
- BOJ
2 stops24h 50m
Aer Lingus
Sat 7/1111:20 pm
BOJ
- LAX
1 stop29h 05m
Aer Lingus
Deal found 2/3![Aer Lingus logo]()
$1,284
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.
Thu 6/115:30 pm
LAX
- BOJ
2 stops39h 05m
Austrian Airlines
Tue 7/141:05 pm
BOJ
- LAX
2 stops39h 42m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$1,317
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.
Fri 6/125:30 pm
LAX
- BOJ
2 stops28h 55m
Lufthansa
Wed 7/812:35 pm
BOJ
- LAX
2 stops22h 11m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$1,133
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.
Thu 6/115:30 pm
LAX
- BOJ
2 stops52h 55m
Lufthansa
Wed 7/812:35 pm
BOJ
- LAX
2 stops22h 11m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$1,193
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.
Sun 6/145:30 pm
LAX
- BOJ
2 stops38h 45m
Lufthansa
Wed 7/1512:35 pm
BOJ
- LAX
2 stops22h 11m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$1,219
Last-minute flights from Riverside to BulgariaDiscover last-minute flight deals from Riverside to Bulgaria. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from Riverside to Bulgaria. Data last updated February 4, 2026 and is based on user searches.
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/145:30 pm
LAX
- VAR
2 stops35h 45m
Austrian Airlines
Sat 3/74:00 pm
VAR
- LAX
2 stops36h 27m
Austrian Airlines
Deal found 2/3![Austrian Airlines logo]()
$710
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.
Sat 2/143:00 pm
LAX
- VAR
1 stop15h 55m
Lufthansa
Sat 3/74:00 pm
VAR
- LAX
2 stops33h 15m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$889
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:30 pm
LAX
- SOF
1 stop14h 50m
Lufthansa
Fri 3/202:00 pm
SOF
- LAX
2 stops18h 59m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$531
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:10 pm
LAX
- SOF
1 stop34h 05m
SWISS
Mon 3/93:00 pm
SOF
- LAX
1 stop35h 35m
SWISS
Deal found 2/2![SWISS logo]()
$537
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:25 pm
LAX
- SOF
1 stop36h 40m
Air France
Fri 3/207:00 am
SOF
- LAX
1 stop21h 35m
Air France
Deal found 2/3![Air France logo]()
$539
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:20 pm
LAX
- SOF
2 stops18h 00m
Lufthansa
Mon 3/96:10 am
SOF
- LAX
1 stop16h 55m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$543
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.
Wed 3/45:30 pm
LAX
- SOF
1 stop19h 15m
United Airlines
Sun 3/86:05 am
SOF
- LAX
1 stop19h 10m
United Airlines
Deal found 2/3![United Airlines logo]()
$534
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:30 pm
LAX
- SOF
1 stop19h 15m
Lufthansa
Mon 3/96:10 am
SOF
- LAX
1 stop16h 55m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$538
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.
Thu 3/512:00 pm
LAX
- SOF
2 stops24h 45m
United Airlines
Thu 3/196:00 am
SOF
- LAX
2 stops25h 00m
United Airlines
Deal found 2/3![United Airlines logo]()
$541
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![LOT logo]()
$484
One-way flights from Riverside to BulgariaSearch for one-way flight options from Riverside to Bulgaria. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
Search for one-way flight options from Riverside to Bulgaria. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This United Airlines deal was found by Cheapflights users on 2/1. 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 7/46:45 pm
LAX
- SOF
3 stops30h 15m
United Airlines
Deal found 2/1![United Airlines logo]()
$286
This Air France deal was found by Cheapflights users on 2/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:30 pm
LAX
- SOF
1 stop33h 30m
Air France
Deal found 2/1![Air France logo]()
$328
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/226:30 pm
LAX
- SOF
1 stop33h 30m
Air France
Deal found 2/3![Air France logo]()
$358
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 6/226:00 am
LAX
- SOF
2 stops20h 10m
United Airlines
Deal found 2/3![United Airlines logo]()
$365
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/214:15 pm
LAX
- SOF
2 stops33h 55m
Air Canada
Deal found 2/3![Air Canada logo]()
$369
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.
Tue 6/236:45 am
LAX
- SOF
2 stops25h 15m
United Airlines
Deal found 2/3![United Airlines logo]()
$373
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2710:20 pm
LAX
- SOF
2 stops33h 50m
Air Canada
Deal found 2/3![Air Canada logo]()
$377
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.
Wed 6/2412:40 pm
LAX
- SOF
2 stops24h 10m
United Airlines
Deal found 2/3![United Airlines logo]()
$378
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:30 pm
LAX
- SOF
1 stop33h 30m
Air France
Deal found 2/3![Air France logo]()
$401
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/262:10 pm
LAX
- SOF
2 stops44h 00m
British Airways
Deal found 2/3![British Airways logo]()
$417
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:55 pm
LAX
- SOF
1 stop34h 05m
Air France
Deal found 2/3![Air France logo]()
$428
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:40 pm
LAX
- SOF
1 stop30h 15m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$443
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 February 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $484 (Ticket) |
One-way from | $286 (United Airlines) |
Popular in | June |
Cheapest in | November |
Average price | $636 |
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 February 4, 2026.
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
Tue 3/3
5:30 pm-6:20 pm
1 stop14h 50m
Sofia
Fri 3/20
2:00 pm-11:59 pm
2 stops18h 59m
$531
Los AngelesSofia
LAX - SOF
LAXSOF
Los Angeles
Wed 3/4
5:30 pm-10:45 pm
1 stop19h 15m
Sofia
Wed 3/18
6:10 am-2:05 pm
1 stop16h 55m
$533
Los AngelesSofia
LAX - SOF
LAXSOF
Los Angeles
Wed 4/8
2:13 pm-6:40 pm
2 stops18h 27m
Sofia
Thu 4/23
2:10 pm-11:58 pm
2 stops19h 48m
$533
Los AngelesSofia
LAX - SOF
LAXSOF
Los Angeles
Wed 4/8
5:30 pm-11:10 pm
1 stop19h 40m
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-6:20 pm
1 stop14h 50m
Sofia
Sun 3/8
6:05 am-3:15 pm
1 stop19h 10m
$535
Los AngelesSofia
LAX - SOF
LAXSOF
Los Angeles
Thu 3/5
1:15 pm-10:45 pm
2 stops23h 30m
Sofia
Thu 3/19
6:00 am-2:05 pm
1 stop17h 05m
$538
Los AngelesVarna
LAX - VAR
LAXVAR
Los Angeles
Tue 4/28
5:30 pm-8:45 pm
1 stop17h 15m
Varna
Tue 5/12
4:00 pm-3:15 pm
2 stops33h 15m
$568
Los AngelesVarna
LAX - VAR
LAXVAR
Los Angeles
Tue 4/28
5:30 pm-8:45 pm
1 stop17h 15m
Varna
Fri 5/15
9:45 am-3:15 pm
1 stop15h 30m
$593
Los AngelesVarna
LAX - VAR
LAXVAR
Los Angeles
Tue 4/28
3:05 pm-8:45 pm
2 stops19h 40m
Varna
Sun 5/10
4:00 pm-3:15 pm
2 stops57h 15m
$616
Los AngelesVarna
LAX - VAR
LAXVAR
Los Angeles
Wed 4/29
3:05 pm-9:00 am
2 stops31h 55m
Varna
Sun 5/10
4:00 pm-3:15 pm
2 stops57h 15m
$626
Showing 1-10 of 46 results
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.
LAX-SOF
LAX-VAR
LAX-BOJ
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
R1V-BG0
LAX-SOF
LAX-VAR
LAX-BOJ
What is the cheapest month to book a flight from Riverside to Bulgaria?
Currently, February is the cheapest month in which you can book a flight from Riverside to Bulgaria (average of $478). Flying from Riverside to Bulgaria 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 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 February 4, 2026.
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.
Entertainment
6.8
Overall
7.5
Boarding
7.6
Food
6.8
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Dec 2025
VIE - DXB
Entertainment
6.8
Overall
7.5
Boarding
7.6
Food
6.8
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Dec 2025
VIE - DXB
Entertainment
6.8
Overall
7.5
Boarding
7.6
Food
6.8
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Dec 2025
VIE - DXB
Entertainment
6.8
Overall
7.5
Boarding
7.6
Food
6.8
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Dec 2025
VIE - DXB
Entertainment
6.8
Overall
7.5
Boarding
7.6
Food
6.8
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Dec 2025
VIE - DXB
Entertainment
6.8
Overall
7.5
Boarding
7.6
Food
6.8
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Dec 2025
VIE - DXB
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.
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Alternative routes for Riverside to Bulgaria
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Bulgaria by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Riverside to Bulgaria by cabin class
Find flights from Riverside to Bulgaria, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Riverside and Bulgaria flights
Browse other Riverside and Bulgaria flight options. Last updated on February 4, 2026.
Popular flight searches
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Riverside to Bulgaria flights
Consider these flights traveling from Riverside to Bulgaria.
Fly to Bulgaria regions
Consider these flights traveling to Bulgaria regions.
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 February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$528 | Average$821 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$530 | Average$1,011 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$547 | Average$676 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$566 | Average$913 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$572 | Average$991 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$591 | Average$931 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$644 | Average$1,288 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$646 | Average$845 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$796 | Average$1,173 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$819 | Average$1,165 | FlexibilityNo cancel fee | On-time79% |