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$72+ Cheap flights from Riverside, CA to Seattle (SEA)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SEA
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Seattle/Tacoma Intl are usually found in January or February, booked 58 days in advance, depart on a Friday or Saturday and return on a Friday

Cheap flight deals from Riverside to Seattle

Keep the following information in mind while searching for Riverside to Seattle flight deals. Data was last updated octubre 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$121
(Priceline)

One-way from

$72
(Priceline)

Popular in

July

Cheapest in

January

Average price

$237
Provider with most accurate pricing for Los Angeles-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Seattle/Tacoma Intl flights.
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From Riverside to Seattle/Tacoma Intl
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One-way flight from Riverside to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 13% potential increase in price ($34 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 October 2025
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Find flight deals from Riverside to Seattle

Cheapest flights from Riverside to Seattle
Explore the most affordable flight options available from Riverside to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This Priceline deal was found by Cheapflights users on 10/30. 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.
sáb. 12/209:36 pmLAX - SEA
Nonstop3h 06mFrontier
dom. 1/46:00 amSEA - LAX
Nonstop2h 46mFrontier
Deal found 10/30$121
This Frontier deal was found by Cheapflights users on 10/28. 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.
sáb. 12/1310:24 amLAX - SEA
Nonstop3h 06mFrontier
sáb. 12/206:00 amSEA - LAX
Nonstop2h 46mFrontier
Deal found 10/28$122
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
vie. 11/216:00 amLAX - SEA
1 stop7h 22mMultiple Airlines
lun. 11/243:22 pmSEA - LAX
Nonstop2h 45mMultiple Airlines
Deal found 10/28$123
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/61:07 pmLAX - SEA
1 stop22h 46mFrontier
dom. 12/76:18 pmSEA - LAX
1 stop25h 47mFrontier
Deal found 10/30$124
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/133:27 pmLAX - SEA
1 stop27h 05mFrontier
dom. 11/169:03 amSEA - LAX
Nonstop2h 49mFrontier
Deal found 10/28$125
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/229:36 pmLAX - SEA
Nonstop3h 06mFrontier
mar. 12/306:00 amSEA - LAX
Nonstop2h 46mFrontier
Deal found 10/30$126
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
jue. 11/139:04 amLAX - SEA
1 stop9h 28mMultiple Airlines
dom. 11/1611:43 amSEA - LAX
1 stop22h 01mMultiple Airlines
Deal found 10/28$127
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
dom. 12/2110:03 pmLAX - SEA
1 stop12h 08mFrontier
mié. 12/312:46 pmSEA - LAX
1 stop5h 45mFrontier
Deal found 10/30$128
This Orbitz deal was found by Cheapflights users on 10/28. 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.
vie. 12/197:45 pmLAX - SEA
1 stop11h 15mMultiple Airlines
sáb. 1/36:00 amSEA - LAX
Nonstop2h 46mMultiple Airlines
Deal found 10/28$129
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/510:24 amLAX - SEA
Nonstop3h 06mFrontier
dom. 12/76:18 pmSEA - LAX
1 stop25h 47mFrontier
Deal found 10/28$130
This Frontier deal was found by Cheapflights users on 10/27. 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.
vie. 11/2111:40 amLAX - SEA
Nonstop2h 57mFrontier
sáb. 11/223:22 pmSEA - LAX
Nonstop2h 45mFrontier
Deal found 10/27$131
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
vie. 11/146:10 amLAX - SEA
1 stop12h 22mMultiple Airlines
lun. 11/243:22 pmSEA - LAX
Nonstop2h 45mMultiple Airlines
Deal found 10/29$132

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Seattle 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 octubre 30, 2025.
Use the filters below to find and compare flights from Riverside to Seattle that are best for you.

Fly from

Riverside

Fly to

Seattle

Route

Depart

Return

Price

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 12/10

2:15 pm-5:10 pm

Nonstop2h 55m

Seattle/Tacoma Intl

mié. 12/17

10:25 am-1:15 pm

Nonstop2h 50m

$157

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 12/3

7:00 pm-9:59 pm

Nonstop2h 59m

Seattle/Tacoma Intl

mar. 12/16

12:30 pm-3:20 pm

Nonstop2h 50m

$157

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mar. 12/9

4:15 pm-9:00 pm

1 stop4h 45m

Seattle/Tacoma Intl

sáb. 12/13

12:36 pm-3:35 pm

Nonstop2h 59m

$163

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 12/3

3:37 pm-6:33 pm

Nonstop2h 56m

Seattle/Tacoma Intl

dom. 12/14

2:59 pm-5:40 pm

Nonstop2h 41m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 12/3

2:15 pm-5:11 pm

Nonstop2h 56m

Seattle/Tacoma Intl

dom. 12/14

5:59 pm-8:43 pm

Nonstop2h 44m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mar. 12/2

5:00 am-7:48 am

Nonstop2h 48m

Seattle/Tacoma Intl

dom. 12/14

2:59 pm-5:40 pm

Nonstop2h 41m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

jue. 12/4

7:40 am-10:45 am

Nonstop3h 05m

Seattle/Tacoma Intl

mié. 12/10

5:59 pm-8:43 pm

Nonstop2h 44m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

sáb. 12/6

2:15 pm-5:11 pm

Nonstop2h 56m

Seattle/Tacoma Intl

vie. 12/12

8:20 pm-11:13 pm

Nonstop2h 53m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 12/10

7:00 pm-9:59 pm

Nonstop2h 59m

Seattle/Tacoma Intl

dom. 12/14

5:59 pm-8:46 pm

Nonstop2h 47m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

jue. 12/4

5:54 pm-8:50 pm

Nonstop2h 56m

Seattle/Tacoma Intl

mar. 12/16

8:20 pm-11:13 pm

Nonstop2h 53m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 21 results
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Best time to book a flight from Riverside to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Seattle. Price data was last updated on October 24, 2025.

Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from Riverside to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Riverside to Seattle?

Currently, January is the cheapest month in which you can book a flight from Riverside to Seattle (average of $38). Flying from Riverside to Seattle in July is currently the most expensive (average of $134). 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 R1V to SEA?

Find hourly flight availability from Riverside to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.

It’s optimal to fly from Riverside to Seattle in the morning. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Riverside to Seattle. Price data was last updated on October 26, 2025.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated octubre 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Riverside to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,220 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,220 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
United Airlines
7.4
Good
8,997 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Spirit Airlines
6.3
Okay
8,116 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Frontier
5.8
Fair
3,123 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

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

    If you book a flight to Seattle from Riverside, you will be flying to 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 39 flights from Riverside to Seattle/Tacoma Intl per day from 8 different airlines.

  • How popular is this Riverside to Seattle flight route?

    Within the past month, 325 users have taken a look at flights from Riverside to Seattle/Tacoma Intl.

  • How long is the flight from Riverside to Seattle?

    There are many flights that can get you from Riverside to Seattle in 2h 55m. Fly via Delta, Alaska Airlines, or United Airlines to get the fastest option. The distance from Riverside to Seattle is about 954 mi. This flight may include one or multiple stops.

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

    No one likes to see their flight delayed. When booking a flight from Riverside to Seattle consider choosing SAUDIA (100%), Aer Lingus (100%) or Horizon Air (100%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Riverside to Seattle?

    While on average a flight from Riverside to Seattle is generally $739, our data shows the cheapest flight currently is $66. When looking at the most popular route, (Los Angeles - Seattle/Tacoma Intl), you can expect to pay $61 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Riverside to Seattle (average of $38). Flying from Riverside to Seattle in July is currently the most expensive (average of $134). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Federal Way
Cle Elum
Marysville
Puyallup
Chehalis
Fife
Issaquah

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Alternative routes for Riverside to Seattle

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Top 8 airlines flying from Riverside to Seattle

Discover the top 8 airlines that operate flights from Riverside to Seattle. 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$172FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$72Average$182FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$98Average$270FlexibilityNo cancel feeOn-time85%
DeltaCheapest$117Average$266FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$138Average$271FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$146Average$267FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$166Average$298FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$177Average$360FlexibilityNo cancel feeOn-time71%

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