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$321+ Cheap flights from Riverside, CA to Osaka (OSA)

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OSA
Jul 21 — Jul 281
Mon 7/21
Mon 7/28
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Osaka are usually found in February or January, booked 20 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Riverside to Osaka

Keep the following information in mind while searching for Riverside to Osaka flight deals. Data was last updated July 16, 2025.

Round-trip from

$689
(Trip.com)

One-way from

$321
(flugladen.de)

Popular in

June

Cheapest in

February

Average price

$899
From Riverside to Osaka (OSA)
Search Deals
One-way flight from Riverside to Osaka (OSA)
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Highest demand for flights based on searches. 9% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Riverside to Osaka

Cheapest flights from Riverside to Osaka
Explore the most affordable flight options available from Riverside to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2025.

This Trip.com deal was found by Cheapflights users on 7/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:25 amLAX - UKB
1 stop18h 55mMultiple Airlines
Sun 10/127:10 amUKB - LAX
1 stop17h 15mMultiple Airlines
Deal found 7/16$689
This oojo deal was found by Cheapflights users on 7/14. 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.
Sun 11/3010:40 pmLAX - UKB
1 stop18h 20mKorean Air
Wed 12/1011:00 amUKB - LAX
1 stop14h 30mKorean Air
Deal found 7/14$702
This FlightHub deal was found by Cheapflights users on 7/15. 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 8/3112:00 pmLAX - UKB
1 stop17h 45mANA
Mon 9/89:15 pmUKB - LAX
1 stop13h 30mANA
Deal found 7/15$705
This Kissandfly.com deal was found by Cheapflights users on 7/16. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/241:35 pmLAX - ITM
1 stop14h 15mJapan Airlines
Tue 9/91:25 pmITM - LAX
1 stop13h 55mJapan Airlines
Deal found 7/16$767
This CrystalTravel deal was found by Cheapflights users on 7/15. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/108:35 amLAX - KIX
2 stops20h 25mKorean Air
Mon 8/1812:35 pmKIX - LAX
1 stop19h 30mKorean Air
Deal found 7/15$767
This Cheapflightsfares deal was found by Cheapflights users on 7/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:50 pmLAX - ITM
1 stop22h 35mANA
Mon 10/136:00 pmITM - LAX
1 stop16h 45mANA
Deal found 7/16$768
This CrystalTravel deal was found by Cheapflights users on 7/14. 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.
Tue 7/223:00 pmLAX - KIX
Nonstop11h 45mJapan Airlines
Wed 7/305:55 pmKIX - LAX
Nonstop10h 40mJapan Airlines
Deal found 7/14$768
This Cheapflightsfares deal was found by Cheapflights users on 7/14. 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.
Sat 8/96:49 pmLAX - KIX
2 stops23h 21mANA
Sat 8/164:55 pmKIX - LAX
1 stop19h 27mANA
Deal found 7/14$769
This American Airlines deal was found by Cheapflights users on 7/16. 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 8/41:25 amLAX - ITM
1 stop14h 10mMultiple Airlines
Tue 8/192:35 pmITM - LAX
1 stop12h 55mMultiple Airlines
Deal found 7/16$770
This United Airlines deal was found by Cheapflights users on 7/14. 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 8/186:00 amLAX - KIX
1 stop16h 50mUnited Airlines
Mon 8/258:25 amKIX - LAX
1 stop26h 45mUnited Airlines
Deal found 7/14$770
This American Airlines deal was found by Cheapflights users on 7/16. 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.
Sun 8/31:25 amLAX - KIX
1 stop15h 00mMultiple Airlines
Sat 8/235:55 pmKIX - LAX
Nonstop10h 40mMultiple Airlines
Deal found 7/16$771
This KAYAK deal was found by Cheapflights users on 7/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:55 amLAX - KIX
1 stop39h 40mPhilippine Airlines
Wed 12/310:15 amKIX - LAX
1 stop25h 55mPhilippine Airlines
Deal found 7/15$772

Cheapflights Fare Finder

Customize your flight search to find flights from Riverside to Osaka 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 July 16, 2025.
Use the filters below to find and compare flights from Riverside to Osaka that are best for you.

Fly from

Riverside

Fly to

Osaka

Route

Depart

Return

Price

Los AngelesKobe

LAX - UKB

LAXUKB

Los Angeles

Fri 10/3

10:25 am-9:20 pm

1 stop18h 55m

Kobe

Sun 10/12

7:10 am-8:25 am

1 stop17h 15m

$689

Los AngelesKobe

LAX - UKB

LAXUKB

Los Angeles

Sun 11/30

10:40 pm-10:00 am

1 stop18h 20m

Kobe

Wed 12/10

11:00 am-8:30 am

1 stop14h 30m

$702

Los AngelesKobe

LAX - UKB

LAXUKB

Los Angeles

Sun 8/31

12:00 pm-9:45 pm

1 stop17h 45m

Kobe

Mon 9/8

9:15 pm-6:45 pm

1 stop13h 30m

$705

Los AngelesOsaka

LAX - ITM

LAXITM

Los Angeles

Sun 8/24

1:35 pm-7:50 pm

1 stop14h 15m

Osaka Itami

Tue 9/9

1:25 pm-11:20 am

1 stop13h 55m

$767

Los AngelesOsaka

LAX - KIX

LAXKIX

Los Angeles

Sun 8/10

8:35 am-9:00 pm

2 stops20h 25m

Osaka Kansai Intl

Mon 8/18

12:35 pm-4:05 pm

1 stop19h 30m

$767

Los AngelesOsaka

LAX - ITM

LAXITM

Los Angeles

Fri 10/10

4:50 pm-7:25 am

1 stop22h 35m

Osaka Itami

Mon 10/13

6:00 pm-6:45 pm

1 stop16h 45m

$768

Los AngelesOsaka

LAX - KIX

LAXKIX

Los Angeles

Sat 8/30

9:40 pm-4:25 pm

2 stops26h 45m

Osaka Kansai Intl

Sat 9/13

6:05 pm-8:22 pm

2 stops18h 17m

$768

Los AngelesOsaka

LAX - KIX

LAXKIX

Los Angeles

Sat 8/9

6:49 pm-10:10 am

2 stops23h 21m

Osaka Kansai Intl

Sat 8/16

4:55 pm-8:22 pm

1 stop19h 27m

$769

Los AngelesOsaka

LAX - KIX

LAXKIX

Los Angeles

Mon 8/18

6:00 am-2:50 pm

1 stop16h 50m

Osaka Kansai Intl

Mon 8/25

8:25 am-7:10 pm

1 stop26h 45m

$770

Los AngelesOsaka

LAX - ITM

LAXITM

Los Angeles

Mon 8/4

1:25 am-7:35 am

1 stop14h 10m

Osaka Itami

Tue 8/19

2:35 pm-11:30 am

1 stop12h 55m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 39 results
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Best time to book a flight from Riverside to Osaka

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

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

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Osaka. Price data was last updated on July 11, 2025.

The best time to book flights from Riverside to Osaka is 20 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Riverside to Osaka (average of $882). Flying from Riverside to Osaka in June is currently the most expensive (average of $1,312). 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 OSA?

Find hourly flight availability from Riverside to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Riverside to Osaka as you normally would.

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

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

Travelers seeking maximum savings on their Riverside to Osaka flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. 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 Osaka. Reviews last updated July 16, 2025.
Read reviews from past customers who have flown Korean Air, ANA, and Japan Airlines from Riverside to Osaka. 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.
Korean Air
8.4
Very good
1,109 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,109 reviews
Korean Air
8.4
Very good
1,109 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.4
Very good
911 reviews
Korean Air
8.4
Very good
1,109 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very good
1,513 reviews
Korean Air
8.4
Very good
1,109 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
455 reviews
Korean Air
8.4
Very good
1,109 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,957 reviews
Korean Air
8.4
Very good
1,109 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

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

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

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $357. However, be on the lookout for offers from ANA and Asiana Airlines, as they are both options that can get you from Riverside to Osaka for a low price.

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

    The most popular route from Riverside to Osaka is Los Angeles - Osaka Kansai Intl. You may also consider Los Angeles - Osaka Itami or Los Angeles - Kobe.

  • What are the most reliable airlines from Riverside to Osaka?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Riverside to Osaka on time: American Airlines (79%), Japan Airlines (79%), Alaska Airlines (79%).

  • What are the cheapest flights from Riverside to Osaka?

    Looking at all options, your cheapest flight can be booked for $383. While the most popular route (Los Angeles - Osaka Kansai Intl) can be booked for $632 on average our data indicates $1,835 when flying from Riverside to Osaka.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Riverside to Osaka (average of $882). Flying from Riverside to Osaka in June is currently the most expensive (average of $1,312). 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

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Nishinomiya

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Top 10 airlines flying from Riverside to Osaka

Discover the top 10 airlines that operate flights from Riverside to Osaka. 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 July 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$490Average$848FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$503Average$1,114FlexibilityNo cancel feeOn-time70%
Hawaiian AirlinesCheapest$566Average$1,286FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$608Average$830FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$611Average$923FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$660Average$993FlexibilityNo cancel feeOn-time79%
China EasternCheapest$665Average$713FlexibilityNo cancel feeOn-time62%
ANACheapest$670Average$872FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$678Average$989FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$708Average$1,039FlexibilityNo cancel feeOn-time69%

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