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Riverside

$66+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAX
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
1 adult, Economy
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Find cheap flights from Seattle to Riverside with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Riverside are usually found in March or May, booked 65 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap 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 February 17, 2026.

This Orbitz deal was found by Cheapflights users on 2/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:45 am
SEA
-
LAX
1 stop5h 18m
Multiple Airlines
Fri 3/202:14 pm
LAX
-
SEA
Nonstop2h 55m
Multiple Airlines
Deal found 2/17$107
This Expedia deal was found by Cheapflights users on 2/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:20 pm
SEA
-
LAX
1 stop7h 51m
Frontier
Sat 4/252:45 pm
LAX
-
SEA
Nonstop2h 57m
Frontier
Deal found 2/16$108
This Frontier deal was found by Cheapflights users on 2/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:35 pm
SEA
-
LAX
1 stop10h 43m
Frontier
Wed 4/292:45 pm
LAX
-
SEA
Nonstop2h 57m
Frontier
Deal found 2/16$109
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/96:54 pm
SEA
-
LAX
1 stop15h 05m
Frontier
Thu 3/122:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/17$110
This Super.com deal was found by Cheapflights users on 2/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/75:31 pm
SEA
-
LAX
Nonstop2h 48m
Frontier
Tue 3/102:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/17$111
This Frontier deal was found by Cheapflights users on 2/17. 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 3/75:31 pm
SEA
-
LAX
Nonstop2h 48m
Frontier
Thu 3/122:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/17$112
This Frontier deal was found by Cheapflights users on 2/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:42 am
SEA
-
LAX
Nonstop2h 48m
Frontier
Wed 4/292:45 pm
LAX
-
SEA
Nonstop2h 57m
Frontier
Deal found 2/16$113
This Super.com deal was found by Cheapflights users on 2/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:33 pm
SEA
-
LAX
1 stop22h 05m
Frontier
Tue 3/102:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/14$114
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:24 pm
SEA
-
LAX
Nonstop2h 48m
Multiple Airlines
Thu 3/2610:03 am
LAX
-
SEA
1 stop10h 17m
Multiple Airlines
Deal found 2/15$115
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Fri 3/136:54 pm
SEA
-
LAX
1 stop15h 05m
Frontier
Mon 3/162:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/17$116
This United Airlines deal was found by Cheapflights users on 2/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:20 am
SEA
-
LAX
Nonstop2h 45m
United Airlines
Thu 4/94:48 pm
LAX
-
SEA
Nonstop2h 57m
United Airlines
Deal found 2/16$117
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:10 am
SEA
-
LAX
1 stop5h 53m
Multiple Airlines
Thu 4/162:45 pm
LAX
-
SEA
Nonstop2h 57m
Multiple Airlines
Deal found 2/16$118

Find flight deals from Seattle to Riverside

Keep the following information in mind while searching for Seattle to Riverside flight deals. Data was last updated February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$108
(Expedia)

One-way from

$70
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$257
Provider with most accurate pricing for Seattle/Tacoma Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Los Angeles flights.
Search Deals
From Seattle/Tacoma Intl to Riverside
Search Deals
One-way flight from Seattle/Tacoma Intl to Riverside
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 17, 2026.
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

Thu 3/26

6:32 am-9:40 am

Nonstop3h 08m

Los Angeles

Tue 3/31

4:48 pm-7:45 pm

Nonstop2h 57m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 3/16

7:15 am-10:02 am

Nonstop2h 47m

Los Angeles

Mon 3/23

8:30 pm-11:23 pm

Nonstop2h 53m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 3/21

9:15 pm-11:59 pm

Nonstop2h 44m

Los Angeles

Wed 4/1

7:40 pm-10:42 pm

Nonstop3h 02m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Thu 5/7

10:10 am-1:00 pm

Nonstop2h 50m

Los Angeles

Mon 5/11

7:59 pm-10:52 pm

Nonstop2h 53m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 4/1

6:20 am-9:05 am

Nonstop2h 45m

Los Angeles

Tue 4/7

4:48 pm-7:45 pm

Nonstop2h 57m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 3/21

9:15 pm-11:59 pm

Nonstop2h 44m

Los Angeles

Wed 3/25

8:00 am-11:02 am

Nonstop3h 02m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Thu 5/14

9:20 pm-11:59 pm

Nonstop2h 39m

Los Angeles

Mon 5/18

9:05 pm-11:55 pm

Nonstop2h 50m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 4/20

7:59 pm-10:46 pm

Nonstop2h 47m

Los Angeles

Mon 4/27

7:05 am-9:58 am

Nonstop2h 53m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 4/29

10:15 am-1:00 pm

Nonstop2h 45m

Los Angeles

Mon 5/11

9:05 pm-11:55 pm

Nonstop2h 50m

$117

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 3/13

9:14 pm-11:59 pm

Nonstop2h 45m

Los Angeles

Wed 3/18

12:46 pm-3:42 pm

Nonstop2h 56m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 22 results
1
2
3

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 February 13, 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Riverside, you should look to book at least 65 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, March is the cheapest month in which you can book a flight from Seattle to Riverside (average of $48). Flying from Seattle to Riverside in July is currently the most expensive (average of $119). 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 February 17, 2026.

It’s typically best to fly out from Seattle to Riverside in the evening. Doing so could potentially save you 12% on the flight price compared to flying in the morning, which is usually more expensive.

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 February 7, 2026.

Travelers seeking maximum savings on their Seattle to Riverside flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday afternoons 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 February 17, 2026.

The most flights from SEA to R1V are scheduled on a Monday (111 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (64 on average).

How much does it cost to fly round-trip from Seattle to Riverside?

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 February 17, 2026.
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
11,896 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,896 reviews
Alaska Airlines
8.0
Very good
11,896 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,207 reviews
Alaska Airlines
8.0
Very good
11,896 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,314 reviews
Alaska Airlines
8.0
Very good
11,896 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,304 reviews
Alaska Airlines
8.0
Very good
11,896 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.7
Fair
3,048 reviews
Alaska Airlines
8.0
Very good
11,896 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 83 flights from Seattle/Tacoma Intl to Riverside per day from 9 different airlines.

  • How popular is this Seattle to Riverside flight route?

    Flights from Seattle/Tacoma Intl to Riverside have been viewed 317 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 2h 47m. Fly via United Airlines or Delta to get the fastest option. Airlines will cover a distance of 954 mi. Most flights are nonstop.

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

    One-way options have recently been found by users for as low as $39 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $42 and Southwest from $75 one-way.

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

    The top 3 most reliable airlines when flying from Seattle to Riverside are United Airlines (94%), Air China (91%) and Copa Airlines (91%).

  • What are the cheapest flights from Seattle to Riverside?

    The cheapest flight price from Seattle to Riverside is $46. On average you can expect to pay $687. The most popular route, (Seattle/Tacoma Intl - Los Angeles), can usually be booked for $64.

  • 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, March is the cheapest month in which you can book a flight from Seattle to Riverside (average of $48). Flying from Seattle to Riverside in July is currently the most expensive (average of $119). 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

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Alternative routes for Seattle to Riverside

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Seattle to Riverside

Discover the top 9 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 February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$44Average$163FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$48Average$148FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$88Average$264FlexibilityNo cancel feeOn-time85%
DeltaCheapest$99Average$253FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$113Average$268FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$136Average$298FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$140Average$303FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$158Average$269FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$314FlexibilityNo cancel feeOn-time71%

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