A desert landscape with yucca plants and a large rock formation in the background.

Cheap Flights to Riverside County from ₩129,900

View ₩129,900 flight on Thu, Sep 10, 2026Opens in a new window

Popular airlines to Riverside County

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • WestJet

  • Air Canada

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Riverside County?

Prices were available within the past 7 days and start at ₩129,900 for one-way flights and ₩317,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Aug 28 - Sun, Aug 30
SEA
Seattle
ONT
Ontario
₩317,000 Roundtrip, found 2 days ago
₩317,000
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Aug 28 from Seattle to Ontario, returning Sun, Aug 30, priced at ₩317,000 found 2 days ago
Delta
Tue, Oct 20 - Tue, Nov 3
SEA
Seattle
SNA
Orange County
₩334,600 Roundtrip, found 4 days ago
₩334,600
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 20 from Seattle to Orange County, returning Tue, Nov 3, priced at ₩334,600 found 4 days ago
Delta
Wed, Aug 19 - Sat, Aug 22
SEA
Seattle
ONT
Ontario
₩348,000 Roundtrip, found 1 day ago
₩348,000
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 19 from Seattle to Ontario, returning Sat, Aug 22, priced at ₩348,000 found 1 day ago
Delta
Tue, Oct 20 - Tue, Nov 3
SEA
Seattle
SNA
Orange County
₩356,500 Roundtrip, found 4 days ago
₩356,500
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 20 from Seattle to Orange County, returning Tue, Nov 3, priced at ₩356,500 found 4 days ago
Delta
Wed, Oct 21 - Mon, Nov 9
SEA
Seattle
SNA
Orange County
₩356,600 Roundtrip, found 4 days ago
₩356,600
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Oct 21 from Seattle to Orange County, returning Mon, Nov 9, priced at ₩356,600 found 4 days ago
Delta
Thu, Sep 10 - Wed, Sep 16
SEA
Seattle
LGB
Long Beach
₩359,400 Roundtrip, found 1 day ago
₩359,400
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Sep 10 from Seattle to Long Beach, returning Wed, Sep 16, priced at ₩359,400 found 1 day ago
Delta
Sat, Aug 22 - Wed, Aug 26
SEA
Seattle
SNA
Orange County
₩362,800 Roundtrip, found 1 day ago
₩362,800
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 22 from Seattle to Orange County, returning Wed, Aug 26, priced at ₩362,800 found 1 day ago
Alaska Airlines
Thu, Oct 22 - Sat, Nov 7
PAE
Seattle
SNA
Orange County
₩385,800 Roundtrip, found 4 days ago
₩385,800
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Oct 22 from Seattle to Orange County, returning Sat, Nov 7, priced at ₩385,800 found 4 days ago
American Airlines
Tue, Oct 20 - Tue, Nov 3
SEA
Seattle
SNA
Orange County
₩452,400 Roundtrip, found 4 days ago
₩452,400
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Oct 20 from Seattle to Orange County, returning Tue, Nov 3, priced at ₩452,400 found 4 days ago
United
Fri, Aug 28 - Sun, Aug 30
SEA
Seattle
ONT
Ontario
₩456,000 Roundtrip, found 2 days ago
₩456,000
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 28 from Seattle to Ontario, returning Sun, Aug 30, priced at ₩456,000 found 2 days ago

Trending flights to Riverside County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 25 - Tue, Sep 1
ICN
Seoul
ONT
Ontario
₩1,169,400 Roundtrip, found 6 hours ago
₩1,169,400
Roundtrip
found 6 hours ago
Select United flight, departing Tue, Aug 25 from Seoul to Ontario, returning Tue, Sep 1, priced at ₩1,169,400 found 6 hours ago

Frequently asked questions

How do I find cheap flights to Riverside County that have flexible change policies?
When it comes to flying these days, flexibility is important. That's why we've added a "No change fee" filter to help you find cheap and flexible fares to Riverside County. It's on the left of your screen underneath the "Flexible change policies" subheading.
Which airlines fly to Riverside County?
You can choose from a selection of airlines that offer flights into or near Riverside County. A few of your top options are:

  • Delta Air Lines - 4,064 flights to or near Riverside County each month, including 4,064 flights to Los Angeles Intl. Airport (LAX) per month.
  • American Airlines - 3,361 flights to or near Riverside County each month, including 3,361 flights to Los Angeles Intl. Airport (LAX) per month.
  • United Airlines - 2,991 flights to or near Riverside County each month, including 2,991 flights to Los Angeles Intl. Airport (LAX) per month.

How can I find cheap tickets to Riverside County?
A good strategy for scoring cheap fares is to be flexible with your travel dates. Start by searching for your flight to Riverside County, then click on the "flexible dates" box to compare prices for nearby days. Another good tip? Book well ahead. For an idea of costs, ₩317,000 was the lowest price for a flight to Riverside County in the last seven days.
How much is a flight to Riverside County?
One-way flights leaving Seattle (SEA) sold for as low as ₩129,900 in the last seven days. During this period, the cost of a return air ticket to Riverside County varied between ₩317,000 and ₩1,169,400. If you find a fantastic deal, book immediately — these fares don't stick around.
What are the most popular airports to fly into in Riverside County?
Los Angeles Intl. Airport (LAX) is the main entry point for people hoping to visit Riverside County. Approximately 16,630 flights per month land at this airport.
When is the cheapest time to fly to Riverside County?
Try to leave early in the week to nab a bargain airfare to Riverside County. Tuesday is usually the cheapest day to depart, followed by Monday. Saturday often has the most expensive prices. This is because many people choose to start their vacation on a weekend.
How much is a plane ticket to Riverside County?
In the last seven days, seats to Riverside County cost between ₩317,000 and ₩1,169,400. The early bird catches the worm, so grab an awesome deal today.
What is the best time to go to Riverside County?
January, February and November are popular months to travel to Riverside, one of Riverside County's most renowned cities. Summer here starts June 20. Temperatures vary from 70ºF to 85ºF across this season, so plan your travels around then if warmer weather is your preference.
What months are the cheapest to book a flight to Riverside County?
An inexpensive month to secure a top deal to Riverside County is February, whereas prices are at a premium in December. Avoid this time if you're counting your pennies.

Book with confidence

About Riverside County

Expedia offers flights to Riverside County to meet every traveler's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Riverside County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Riverside County
*Available to Expedia members.