HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$55+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SEA
abr. 2 — abr. 91
mié. 4/2
mié. 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Riverside to Seattle with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Riverside to Seattle/Tacoma Intl are usually found in January or September, booked 50 days in advance, depart on a Saturday or Thursday and return on a Thursday

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 marzo 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$98
(Cheapflightsfares)

One-way from

$55
(CheapOair)

Popular in

June

Cheapest in

January

Average price

$237
Provider with most accurate pricing for Los Angeles-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Seattle/Tacoma Intl flights.
Search Deals
From Riverside to Seattle/Tacoma Intl
Search Deals
One-way flight from Riverside to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 marzo 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/245:35 pmLAX - SEA
Nonstop3h 00mFrontier
lun. 4/284:17 pmSEA - LAX
Nonstop2h 48mFrontier
Deal found 3/27$98
This Flightnetwork deal was found by Cheapflights users on 3/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/243:30 pmLAX - SEA
Nonstop2h 53mSpirit Airlines
lun. 4/282:30 pmSEA - LAX
Nonstop2h 53mSpirit Airlines
Deal found 3/27$100
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/2510:32 amLAX - SEA
Nonstop2h 53mMultiple Airlines
vie. 5/210:06 amSEA - LAX
Nonstop2h 45mMultiple Airlines
Deal found 3/27$105
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/305:51 pmLAX - SEA
Nonstop2h 54mDelta
mié. 5/219:55 amSEA - LAX
Nonstop2h 51mDelta
Deal found 3/27$177
This United Airlines deal was found by Cheapflights users on 3/26. 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.
mié. 5/144:15 pmLAX - SEA
1 stop5h 16mUnited Airlines
sáb. 5/246:25 amSEA - LAX
Nonstop2h 55mUnited Airlines
Deal found 3/26$184
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/34:05 pmLAX - SEA
1 stop4h 05mSouthwest
mié. 5/75:10 pmSEA - LAX
1 stop5h 00mSouthwest
Deal found 3/27$192
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/227:00 amLAX - SEA
Nonstop2h 55mHawaiian Airlines
mar. 5/2710:12 amSEA - LAX
Nonstop2h 46mHawaiian Airlines
Deal found 3/27$207
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/227:00 amLAX - SEA
Nonstop2h 55mAlaska Airlines
lun. 5/269:15 pmSEA - LAX
Nonstop2h 44mAlaska Airlines
Deal found 3/27$217

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 marzo 28, 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

jue. 4/24

3:30 pm-6:23 pm

Nonstop2h 53m

Seattle/Tacoma Intl

mar. 4/29

12:30 pm-8:21 pm

1 stop7h 51m

$96

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

jue. 4/24

5:35 pm-8:35 pm

Nonstop3h 00m

Seattle/Tacoma Intl

lun. 4/28

4:17 pm-7:05 pm

Nonstop2h 48m

$100

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

vie. 4/25

10:32 am-1:25 pm

Nonstop2h 53m

Seattle/Tacoma Intl

vie. 5/2

10:06 am-12:51 pm

Nonstop2h 45m

$105

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mar. 4/22

8:00 am-10:58 am

Nonstop2h 58m

Seattle/Tacoma Intl

mar. 4/22

2:00 pm-4:45 pm

Nonstop2h 45m

$172

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 4/23

2:00 pm-4:50 pm

Nonstop2h 50m

Seattle/Tacoma Intl

mié. 4/30

9:25 am-12:05 pm

Nonstop2h 40m

$177

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

sáb. 5/24

7:07 pm-9:58 pm

Nonstop2h 51m

Seattle/Tacoma Intl

lun. 5/26

6:25 am-9:20 am

Nonstop2h 55m

$178

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

sáb. 5/3

4:05 pm-8:10 pm

1 stop4h 05m

Seattle/Tacoma Intl

mar. 5/6

3:05 pm-9:40 pm

1 stop6h 35m

$192

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

jue. 5/22

9:10 pm-11:59 pm

Nonstop2h 49m

Seattle/Tacoma Intl

dom. 5/25

5:43 pm-8:28 pm

Nonstop2h 45m

$194

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

mié. 4/9

3:24 pm-6:32 pm

Nonstop3h 08m

Seattle/Tacoma Intl

dom. 10/5

7:15 am-10:06 am

Nonstop2h 51m

$243

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

dom. 5/4

5:35 pm-8:42 pm

Nonstop3h 07m

$55

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 17 results
1
2

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 March 21, 2025.

Booking 29 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 $238). Flying from Riverside to Seattle in July is currently the most expensive (average of $411). 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 marzo 28, 2025.

When flying from Riverside to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 March 23, 2025.

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

Weekly flight availability from Riverside to Seattle

Explore weekly flight availability from Riverside to Seattle. 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 marzo 28, 2025.

The most flights from R1V to SEA are scheduled on a Friday (113 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 marzo 28, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Riverside to Seattle to help guide your decision. 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.
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,335 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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

  • How popular is this Riverside to Seattle flight route?

    Within the past month, 319 users have taken a look at flights from Riverside to Seattle/Tacoma Intl.

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

    The cheapest airlines for a one-way flight from Riverside to Seattle are Frontier ($55), Spirit Airlines ($61), and Delta ($89).

  • 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 EL AL (96%), Air France (96%) or China Eastern (96%) 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 $1,014, our data shows the cheapest flight currently is $50. When looking at the most popular route, (Los Angeles - Seattle/Tacoma Intl), you can expect to pay $98 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 $238). Flying from Riverside to Seattle in July is currently the most expensive (average of $411). 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 Riverside?

Book flights to Riverside if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Cle Elum
Centralia
Mukilteo
Aberdeen
Shoreline
Lynnwood
Shelton
Silverdale
Redmond
Monroe

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Riverside to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Seattle flights
Los Angeles to Portland flights
San Francisco to Seattle flights
Santa Ana to Seattle flights
San Diego to Seattle flights
Burbank to Seattle flights
Ontario to Seattle flights
Oakland to Seattle flights
San Jose to Seattle flights
Sacramento to Seattle flights
Las Vegas to Seattle flights
Burbank to Portland flights
Ontario to Portland flights
San Francisco to Portland flights
Los Angeles to Everett flights
Santa Ana to Portland flights
San Francisco to Everett flights
Fresno to Seattle flights
San Diego to Everett flights
San Diego to Portland flights
San Jose to Portland flights
Oakland to Portland flights
Reno to Seattle flights
Santa Ana to Everett flights
Sacramento to Portland flights
Las Vegas to Everett flights
Palm Springs to Seattle flights
Los Angeles to Spokane flights
San Diego to Spokane flights
Santa Rosa to Seattle flights
San Francisco to Spokane flights
Long Beach to Seattle flights
Ontario to Spokane flights
Palm Springs to Portland flights
San Luis Obispo to Portland flights
Fresno to Portland flights
Santa Barbara to Seattle flights
Santa Rosa to Portland flights
Las Vegas to Portland flights
Long Beach to Portland flights
San Luis Obispo to Seattle flights
Medford to Seattle flights
Los Angeles to Pasco flights
San Jose to Spokane flights
Sacramento to Spokane flights
San Jose to Everett flights
Reno to Portland flights
Fresno to Spokane flights
San Francisco to Pasco flights
Monterey to Seattle flights

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 marzo 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$39Average$137FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$61Average$138FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$78Average$255FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$88Average$260FlexibilityNo cancel feeOn-time85%
DeltaCheapest$113Average$275FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$150Average$314FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$156Average$323FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$157Average$398FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.