Cheap Flights to Riverside County | Popular Routes to Riverside County from HK$551

View HK$551 flight on Tue, 31 Mar 2026Opens in a new window

Popular airlines to Riverside County

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • WestJet

    WestJet

  • Air Canada

    Air Canada

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Cheap round-trip flights to Riverside County

Prices were available within the past 7 days and start at HK$551 for one-way flights and HK$780 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 3 Mar - Mon, 16 Mar
SEA
Seattle
ONT
Ontario
HK$780 Return, found 4 days ago
HK$780
Return
found 4 days ago
Select Delta flight, departing Tue, 3 Mar from Seattle to Ontario, returning Mon, 16 Mar, priced at HK$780 found 4 days ago
Alaska Airlines
Mon, 16 Mar - Tue, 31 Mar
SEA
Seattle
ONT
Ontario
HK$1,092 Return, found 4 days ago
HK$1,092
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 16 Mar from Seattle to Ontario, returning Tue, 31 Mar, priced at HK$1,092 found 4 days ago
Delta
Thu, 29 Jan - Sat, 31 Jan
SEA
Seattle
SNA
Orange County
HK$1,156 Return, found 5 days ago
HK$1,156
Return
found 5 days ago
Select Delta flight, departing Thu, 29 Jan from Seattle to Orange County, returning Sat, 31 Jan, priced at HK$1,156 found 5 days ago
Delta
Mon, 2 Feb - Tue, 3 Feb
SEA
Seattle
ONT
Ontario
HK$1,169 Return, found 4 days ago
HK$1,169
Return
found 4 days ago
Select Delta flight, departing Mon, 2 Feb from Seattle to Ontario, returning Tue, 3 Feb, priced at HK$1,169 found 4 days ago
Delta
Sat, 31 Jan - Sun, 15 Feb
SEA
Seattle
SNA
Orange County
HK$1,242 Return, found 5 days ago
HK$1,242
Return
found 5 days ago
Select Delta flight, departing Sat, 31 Jan from Seattle to Orange County, returning Sun, 15 Feb, priced at HK$1,242 found 5 days ago
Delta
Mon, 2 Feb - Tue, 3 Feb
SEA
Seattle
ONT
Ontario
HK$1,246 Return, found 4 days ago
HK$1,246
Return
found 4 days ago
Select Delta flight, departing Mon, 2 Feb from Seattle to Ontario, returning Tue, 3 Feb, priced at HK$1,246 found 4 days ago
Delta
Thu, 29 Jan - Sun, 1 Feb
SEA
Seattle
SNA
Orange County
HK$1,317 Return, found 6 days ago
HK$1,317
Return
found 6 days ago
Select Delta flight, departing Thu, 29 Jan from Seattle to Orange County, returning Sun, 1 Feb, priced at HK$1,317 found 6 days ago
Delta
Tue, 31 Mar - Fri, 3 Apr
SEA
Seattle
ONT
Ontario
HK$1,393 Return, found 4 days ago
HK$1,393
Return
found 4 days ago
Select Delta flight, departing Tue, 31 Mar from Seattle to Ontario, returning Fri, 3 Apr, priced at HK$1,393 found 4 days ago
American Airlines
Mon, 2 Feb - Tue, 3 Feb
SEA
Seattle
ONT
Ontario
HK$1,525 Return, found 4 days ago
HK$1,525
Return
found 4 days ago
Select American Airlines flight, departing Mon, 2 Feb from Seattle to Ontario, returning Tue, 3 Feb, priced at HK$1,525 found 4 days ago
United
Sat, 31 Jan - Sun, 15 Feb
SEA
Seattle
SNA
Orange County
HK$1,934 Return, found 5 days ago
HK$1,934
Return
found 5 days ago
Select United flight, departing Sat, 31 Jan from Seattle to Orange County, returning Sun, 15 Feb, priced at HK$1,934 found 5 days ago

About Riverside County

Expedia offers flights to Riverside County to meet every traveller'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.

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, HK$780 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 HK$551 in the last seven days. During this period, the cost of a return air ticket to Riverside County varied between HK$780 and HK$5,642. 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 HK$780 and HK$5,642. 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 21ºC to 29ºC 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.

Trending flights to Riverside County

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

United
Mon, 26 Jan - Mon, 2 Feb
HKG
Hong Kong SAR
ONT
Ontario
HK$5,642 Return, found 9 hours ago
HK$5,642
Return
found 9 hours ago
Select United flight, departing Mon, 26 Jan from Hong Kong SAR to Ontario, returning Mon, 2 Feb, priced at HK$5,642 found 9 hours ago
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