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Riverside

$88+ Cheap flights from Seattle (SEA) to Riverside, CA

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAX
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Riverside are usually found in January or March, booked 30 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Seattle to Riverside

Keep the following information in mind while searching for Seattle to Riverside flight deals. Data was last updated September 11, 2025.

Round-trip from

$126
(SmartFares)

One-way from

$88
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$186
From Seattle/Tacoma Intl to Riverside
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One-way flight from Seattle/Tacoma Intl to Riverside
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Highest demand for flights based on searches. 3% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Riverside

Cheapest flights from Seattle to Riverside
Explore the most affordable flight options available from Seattle to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This SmartFares deal was found by Cheapflights users on 9/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/49:39 pmSEA - LAX
Nonstop2h 50mFrontier
Mon 10/64:45 pmLAX - SEA
Nonstop2h 51mFrontier
Deal found 9/9$126
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/101:02 pmSEA - LAX
Nonstop2h 49mFrontier
Fri 10/174:52 pmLAX - SEA
Nonstop2h 56mFrontier
Deal found 9/10$128
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:10 amSEA - LAX
Nonstop2h 50mFrontier
Sat 10/114:52 pmLAX - SEA
Nonstop2h 56mFrontier
Deal found 9/11$130
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:10 amSEA - LAX
Nonstop2h 50mFrontier
Fri 10/174:52 pmLAX - SEA
Nonstop2h 56mFrontier
Deal found 9/10$131
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:10 amSEA - LAX
Nonstop2h 50mFrontier
Sat 10/49:08 pmLAX - SEA
Nonstop2h 51mFrontier
Deal found 9/10$133
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:20 pmSEA - LAX
1 stop6h 05mSouthwest
Tue 10/146:20 pmLAX - SEA
1 stop4h 25mSouthwest
Deal found 9/11$134
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/87:00 amSEA - LAX
1 stop5h 44mMultiple Airlines
Wed 10/154:52 pmLAX - SEA
Nonstop2h 56mMultiple Airlines
Deal found 9/10$135
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:08 amSEA - LAX
Nonstop2h 49mFrontier
Sun 11/94:41 pmLAX - SEA
Nonstop2h 56mFrontier
Deal found 9/9$136
This Gotogate deal was found by Cheapflights users on 9/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/49:39 pmSEA - LAX
Nonstop2h 50mFrontier
Tue 10/71:15 pmLAX - SEA
1 stop22h 52mFrontier
Deal found 9/8$137

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Riverside 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 September 11, 2025.
Use the filters below to find and compare flights from Seattle to Riverside that are best for you.

Fly from

Seattle

Fly to

Riverside

Route

Depart

Return

Price

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 10/1

8:00 am-2:35 pm

1 stop6h 35m

Los Angeles

Sat 10/4

5:10 pm-10:45 pm

1 stop5h 35m

$142

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 10/28

11:30 am-12:11 pm

1 stop24h 41m

Los Angeles

Wed 10/29

3:58 pm-6:57 pm

Nonstop2h 59m

$165

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 11/15

12:10 pm-6:50 pm

1 stop6h 40m

Los Angeles

Mon 11/17

5:15 pm-10:55 pm

1 stop5h 40m

$173

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 12/6

10:25 am-3:05 pm

1 stop4h 40m

Los Angeles

Sun 12/7

8:20 am-2:30 pm

1 stop6h 10m

$184

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 10/10

6:30 am-1:00 pm

1 stop6h 30m

Los Angeles

Sat 10/18

4:20 pm-8:35 pm

1 stop4h 15m

$184

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 11/14

5:55 pm-10:50 pm

1 stop4h 55m

Los Angeles

Tue 11/18

5:45 am-2:25 pm

2 stops8h 40m

$188

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 9/29

5:30 pm-10:25 pm

1 stop4h 55m

Los Angeles

Tue 9/30

2:10 pm-6:10 pm

1 stop4h 00m

$191

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 10/6

9:55 am-3:55 pm

1 stop6h 00m

Los Angeles

Wed 10/8

6:20 pm-10:45 pm

1 stop4h 25m

$195

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 10/7

2:10 pm-4:50 pm

Nonstop2h 40m

Los Angeles

Tue 10/14

9:59 am-1:00 pm

Nonstop3h 01m

$197

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 10/21

1:00 pm-5:47 pm

1 stop4h 47m

Los Angeles

Tue 10/28

8:40 am-11:39 am

Nonstop2h 59m

$198

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 23 results
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Best time to book a flight from Seattle to Riverside

Have a flexible travel schedule? Discover the best time to fly to Riverside from Seattle 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 Seattle to Riverside

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Riverside. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Riverside, you should look to book at least 30 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 Seattle to Riverside?

Currently, January is the cheapest month in which you can book a flight from Seattle to Riverside (average of $246). Flying from Seattle to Riverside in March is currently the most expensive (average of $325). 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 SEA to R1V?

Find hourly flight availability from Seattle to Riverside. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

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

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Riverside. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Seattle to Riverside flight should consider departing on Friday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Riverside

Explore weekly flight availability from Seattle to Riverside. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from SEA to R1V are scheduled on a Thursday (130 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (56 on average).

Reviews of airlines servicing Riverside

Get insights into the airlines that provide service to Riverside. 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 Riverside. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from Seattle to Riverside by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Spirit Airlines
6.3
Okay
8,023 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Riverside. 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 from for flights from Seattle to Riverside?

    If you book a flight to Riverside from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 91 flights from Seattle/Tacoma Intl to Riverside per day from 8 different airlines.

  • How popular is this Seattle to Riverside flight route?

    Flights from Seattle/Tacoma Intl to Riverside have been viewed 309 times in the past calendar month.

  • How long is the flight from Seattle to Riverside?

    There are many flights that can get you from Seattle to Riverside in 6h 35m. Fly via Southwest or Alaska Airlines to get the fastest option. Airlines will cover a distance of 954 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The top 3 most reliable airlines when flying from Seattle to Riverside are China Eastern (97%), SAUDIA (92%) and EL AL (91%).

  • What are the cheapest flights from Seattle to Riverside?

    The cheapest flight price from Seattle to Riverside is $94. On average you can expect to pay $609. The most popular route, (Seattle/Tacoma Intl - Los Angeles), can usually be booked for $68.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Riverside (average of $246). Flying from Seattle to Riverside in March is currently the most expensive (average of $325). 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.

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Top 8 airlines flying from Seattle to Riverside

Discover the top 8 airlines that operate flights from Seattle to Riverside. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$151FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$67Average$157FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$98Average$254FlexibilityNo cancel feeOn-time85%
DeltaCheapest$117Average$265FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$136Average$263FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$155Average$281FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$156Average$282FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$166Average$302FlexibilityNo cancel feeOn-time71%

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