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Riverside

$78+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAX
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 63 days in advance, depart on a Friday or Thursday 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 December 18, 2025.

This Expedia deal was found by Cheapflights users on 12/16. 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.
Sat 12/201:31 pmSEA - LAX
1 stop20h 42mFrontier
Wed 12/319:36 pmLAX - SEA
Nonstop3h 06mFrontier
Deal found 12/16$171
This Super.com deal was found by Cheapflights users on 12/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:25 pmSEA - LAX
1 stop20h 48mFrontier
Mon 1/128:37 amLAX - SEA
Nonstop3h 10mFrontier
Deal found 12/16$175
This Travelocity deal was found by Cheapflights users on 12/17. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:25 pmSEA - LAX
1 stop20h 48mFrontier
Sun 1/113:02 pmLAX - SEA
Nonstop3h 06mFrontier
Deal found 12/17$194
This Orbitz deal was found by Cheapflights users on 12/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:25 pmSEA - LAX
1 stop18h 17mFrontier
Wed 12/319:36 pmLAX - SEA
Nonstop3h 06mFrontier
Deal found 12/16$200
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Mon 12/2911:06 amSEA - LAX
2 stops20h 12mMultiple Airlines
Mon 1/128:37 amLAX - SEA
Nonstop3h 10mMultiple Airlines
Deal found 12/16$203
This Trip.com deal was found by Cheapflights users on 12/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amSEA - LAX
Nonstop2h 46mFrontier
Tue 1/611:31 amLAX - SEA
1 stop6h 20mFrontier
Deal found 12/15$204
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/301:25 pmSEA - LAX
1 stop20h 48mFrontier
Mon 1/128:37 amLAX - SEA
Nonstop3h 10mFrontier
Deal found 12/16$206
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/291:25 pmSEA - LAX
2 stops17h 53mMultiple Airlines
Sun 1/113:02 pmLAX - SEA
Nonstop3h 06mMultiple Airlines
Deal found 12/17$213
This Mytrip deal was found by Cheapflights users on 12/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amSEA - LAX
Nonstop2h 46mFrontier
Wed 1/73:25 pmLAX - SEA
1 stop26h 12mFrontier
Deal found 12/15$216
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/315:05 pmSEA - LAX
Nonstop3h 00mUnited Airlines
Tue 1/68:27 amLAX - SEA
Nonstop3h 14mUnited Airlines
Deal found 12/16$218

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 December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$126
(Kiwi.com)

One-way from

$78
(Frontier)

Popular in

December

Cheapest in

January

Average price

$292
Provider with most accurate pricing for Seattle/Tacoma Intl-Los Angeles flight deals.
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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. 5% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 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

Mon 1/26

8:06 am-10:55 am

Nonstop2h 49m

Los Angeles

Sat 2/7

7:00 am-10:01 am

Nonstop3h 01m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 1/24

7:15 am-10:05 am

Nonstop2h 50m

Los Angeles

Mon 1/26

5:40 pm-8:36 pm

Nonstop2h 56m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Thu 1/29

8:06 am-10:55 am

Nonstop2h 49m

Los Angeles

Tue 2/3

1:56 pm-4:54 pm

Nonstop2h 58m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 2/4

2:02 pm-4:38 pm

Nonstop2h 36m

Los Angeles

Mon 2/9

5:40 pm-8:36 pm

Nonstop2h 56m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 2/4

6:53 pm-9:36 pm

Nonstop2h 43m

Los Angeles

Mon 2/9

1:56 pm-4:54 pm

Nonstop2h 58m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 1/13

11:20 am-6:25 pm

2 stops7h 05m

Los Angeles

Tue 1/20

2:30 pm-6:35 pm

1 stop4h 05m

$152

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 1/20

6:25 am-10:30 am

1 stop4h 05m

Los Angeles

Tue 1/20

2:30 pm-6:35 pm

1 stop4h 05m

$152

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 1/17

1:45 pm-5:55 pm

1 stop4h 10m

Los Angeles

Sun 1/18

5:35 pm-9:50 pm

1 stop4h 15m

$155

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 2/6

2:40 pm-7:00 pm

1 stop4h 20m

Los Angeles

Tue 2/10

2:30 pm-6:35 pm

1 stop4h 05m

$158

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 2/18

9:50 am-4:59 pm

1 stop7h 09m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 18 results
1
2

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 December 12, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Riverside, you should look to book at least 63 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 $38). 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 December 18, 2025.

It’s typically best to fly out from Seattle to Riverside at noon. Doing so could potentially save you 23% 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 December 13, 2025.

Travelers seeking maximum savings on their Seattle to Riverside flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon 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 December 18, 2025.

The most flights from SEA to R1V are scheduled on a Thursday (118 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 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 December 18, 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
11,477 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Spirit Airlines
6.3
Okay
8,190 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Frontier
5.8
Fair
3,081 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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 66 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 296 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 49m. Fly via Alaska 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 $36 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $38 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 SAUDIA (100%), Horizon Air (100%) and ITA Airways (100%).

  • What are the cheapest flights from Seattle to Riverside?

    The cheapest flight price from Seattle to Riverside is $61. On average you can expect to pay $740. The most popular route, (Seattle/Tacoma Intl - Los Angeles), can usually be booked for $59.

  • 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 $38). 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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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$158FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$73Average$153FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$98Average$254FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$113Average$257FlexibilityNo cancel feeOn-time63%
DeltaCheapest$119Average$260FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$138Average$282FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$147Average$299FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$176Average$306FlexibilityNo cancel feeOn-time71%

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