HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$47+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SEA
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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.

The best prices from Riverside to Seattle/Tacoma Intl are usually found in January or September, booked 50 days in advance, depart on a Thursday or Saturday 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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$68
(Cheapflightsfares)

One-way from

$47
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$227
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. 9% potential increase in price ($23 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 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 February 22, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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.
Tue 3/254:59 pmLAX - SEA
Nonstop3h 00mFrontier
Sat 3/293:02 pmSEA - LAX
Nonstop2h 42mFrontier
Deal found 2/21$68
This FlightHub deal was found by Cheapflights users on 2/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/157:29 pmLAX - SEA
1 stop16h 06mSpirit Airlines
Wed 4/162:30 pmSEA - LAX
Nonstop2h 53mSpirit Airlines
Deal found 2/20$72
This Mytrip deal was found by Cheapflights users on 2/22. 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.
Tue 3/254:59 pmLAX - SEA
Nonstop3h 00mMultiple Airlines
Mon 3/319:48 amSEA - LAX
1 stop5h 00mMultiple Airlines
Deal found 2/22$76
This Trip.com deal was found by Cheapflights users on 2/21. 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.
Thu 3/203:03 pmLAX - SEA
Nonstop2h 51mHawaiian Airlines
Mon 3/244:59 pmSEA - LAX
Nonstop2h 50mHawaiian Airlines
Deal found 2/21$88
This Delta deal was found by Cheapflights users on 2/21. 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.
Fri 4/255:51 pmLAX - SEA
Nonstop2h 54mDelta
Sun 4/279:25 amSEA - LAX
Nonstop2h 40mDelta
Deal found 2/21$97
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 3/257:00 amLAX - SEA
Nonstop2h 50mAlaska Airlines
Tue 3/2512:34 pmSEA - LAX
1 stop4h 45mAlaska Airlines
Deal found 2/21$141
This Southwest deal was found by Cheapflights users on 2/21. 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.
Sat 3/222:15 pmLAX - SEA
1 stop7h 40mSouthwest
Tue 4/13:35 pmSEA - LAX
1 stop6h 30mSouthwest
Deal found 2/21$151

Find flights from Riverside to Seattle within your budget

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 February 22, 2025.

Fly from

Riverside

Fly to

Seattle

Route

Depart

Return

Price

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 3/25

4:59 pm-7:59 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Sat 3/29

3:02 pm-5:44 pm

Nonstop2h 42m

$68

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 4/15

7:29 pm-11:35 am

1 stop16h 06m

Seattle/Tacoma Intl

Wed 4/16

2:30 pm-5:23 pm

Nonstop2h 53m

$72

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 3/25

4:59 pm-7:59 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Mon 3/31

9:48 am-2:48 pm

1 stop5h 00m

$76

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Thu 3/20

3:03 pm-5:54 pm

Nonstop2h 51m

Seattle/Tacoma Intl

Mon 3/24

4:59 pm-7:49 pm

Nonstop2h 50m

$88

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Fri 4/25

5:51 pm-8:45 pm

Nonstop2h 54m

Seattle/Tacoma Intl

Sun 4/27

9:25 am-12:05 pm

Nonstop2h 40m

$97

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 3/25

7:00 am-9:50 am

Nonstop2h 50m

Seattle/Tacoma Intl

Tue 3/25

12:34 pm-5:19 pm

1 stop4h 45m

$141

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Sat 3/22

2:15 pm-9:55 pm

1 stop7h 40m

Seattle/Tacoma Intl

Tue 4/1

3:35 pm-10:05 pm

1 stop6h 30m

$151

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 3/18

5:45 am-11:46 am

1 stop6h 01m

$47

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Sun 4/27

7:00 am-9:58 am

Nonstop2h 58m

$49

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 4/1

4:20 pm-9:15 pm

1 stop4h 55m

$54

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 15 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.

Travel insights for flights from Riverside to Seattle

Get recent, data-driven insights about flights from Riverside to Seattle including ideal travel times, pricing trends, and more.

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 February 14, 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 February 22, 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 February 16, 2025.

Travelers seeking maximum savings on their Riverside to Seattle flight should consider departing on Friday 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 February 22, 2025.

The most flights from R1V to SEA are scheduled on a Thursday (118 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (80 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 February 22, 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
4,396 reviews

Food

7.1

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Food

7.1

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Alaska Airlines
8.0
Very good
9,702 reviews
Southwest
8.1
Very good
4,396 reviews

Food

7.1

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Food

7.1

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Hawaiian Airlines
7.9
Good
2,314 reviews
Southwest
8.1
Very good
4,396 reviews

Food

7.1

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Food

7.1

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

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 96 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, 310 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 Spirit Airlines ($47), Delta ($49), and United Airlines ($54).

  • 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 Air Chathams (100%), WestJet (99%) or EL AL (97%) 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 $624, our data shows the cheapest flight currently is $43. When looking at the most popular route, (Los Angeles - Seattle/Tacoma Intl), you can expect to pay $49 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
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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
San Francisco to Seattle flights
Los Angeles to Portland flights
Ontario to Seattle flights
San Diego to Seattle flights
San Jose to Seattle flights
Santa Ana to Seattle flights
Burbank to Seattle flights
Sacramento to Seattle flights
Oakland to Seattle flights
Burbank to Portland flights
Santa Ana to Portland flights
Ontario to Portland flights
San Francisco to Portland flights
Las Vegas to Seattle flights
San Francisco to Everett flights
Fresno to Seattle flights
Los Angeles to Everett flights
San Diego to Portland flights
Oakland to Portland flights
San Jose to Portland flights
Santa Rosa to Seattle flights
Los Angeles to Spokane flights
San Diego to Everett flights
Santa Ana to Everett flights
Sacramento to Portland flights
Reno to Seattle flights
San Luis Obispo to Seattle flights
Palm Springs to Seattle flights
San Francisco to Spokane flights
Reno to Portland flights
Fresno to Portland flights
Las Vegas to Portland flights
Santa Barbara to Seattle flights
Long Beach to Seattle flights
San Diego to Spokane flights
Santa Rosa to Portland flights
Santa Barbara to Portland flights
Las Vegas to Everett flights
Ontario to Spokane flights
Monterey to Seattle flights
San Jose to Everett flights
Palm Springs to Portland flights
Long Beach to Portland flights
San Luis Obispo to Portland flights
Medford to Seattle flights
Santa Ana to Spokane flights
Sacramento to Spokane flights
Fresno to Spokane flights
Los Angeles to Pasco flights

Top 7 airlines flying from Riverside to Seattle

Discover the top 7 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$39Average$142FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$61Average$138FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$78Average$259FlexibilityNo cancel feeOn-time75%
DeltaCheapest$107Average$277FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$157Average$324FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$157Average$367FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$182Average$339FlexibilityNo cancel feeOn-time63%
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.