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$79+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Seattle/Tacoma Intl are usually found in January or September, booked 58 days in advance, depart on a Saturday or Friday 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 June 12, 2025.

Round-trip from

$122
(Cheapflightsfares)

One-way from

$79
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$267
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. 12% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
Mon 8/253:46 pmLAX - SEA
Nonstop2h 51mFrontier
Sat 9/69:39 pmSEA - LAX
Nonstop2h 49mFrontier
Deal found 6/9$122
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/85:30 amLAX - SEA
1 stop9h 33mSpirit Airlines
Fri 7/115:30 pmSEA - LAX
1 stop5h 20mSpirit Airlines
Deal found 6/12$133
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Sat 8/168:33 amLAX - SEA
Nonstop2h 51mMultiple Airlines
Mon 8/184:58 pmSEA - LAX
1 stop13h 20mMultiple Airlines
Deal found 6/11$137
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 8/97:25 pmLAX - SEA
Nonstop2h 51mUnited Airlines
Sat 8/166:45 amSEA - LAX
Nonstop2h 55mUnited Airlines
Deal found 6/9$167
This Southwest deal was found by Cheapflights users on 6/11. 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 9/137:00 pmLAX - SEA
1 stop4h 10mSouthwest
Sat 9/206:55 amSEA - LAX
1 stop4h 15mSouthwest
Deal found 6/11$168
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 8/1311:50 amLAX - SEA
Nonstop2h 48mDelta
Fri 8/159:20 pmSEA - LAX
Nonstop2h 47mDelta
Deal found 6/11$187
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 9/126:07 pmLAX - SEA
1 stop4h 22mHawaiian Airlines
Sat 9/207:00 amSEA - LAX
1 stop3h 51mHawaiian Airlines
Deal found 6/12$206
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 9/56:07 pmLAX - SEA
1 stop4h 22mAlaska Airlines
Sun 9/77:00 amSEA - LAX
1 stop5h 39mAlaska Airlines
Deal found 6/11$226
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/286:50 pmLAX - SEA
Nonstop2h 55mAmerican Airlines
Sat 7/58:00 amSEA - LAX
Nonstop3h 01mAmerican Airlines
Deal found 6/12$258

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 June 12, 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

Mon 8/25

3:46 pm-6:37 pm

Nonstop2h 51m

Seattle/Tacoma Intl

Sat 9/6

9:39 pm-12:28 am

Nonstop2h 49m

$122

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 7/8

5:30 am-3:03 pm

1 stop9h 33m

Seattle/Tacoma Intl

Fri 7/11

5:30 pm-10:50 pm

1 stop5h 20m

$133

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Sat 8/16

8:33 am-11:24 am

Nonstop2h 51m

Seattle/Tacoma Intl

Mon 8/18

4:58 pm-6:18 am

1 stop13h 20m

$137

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Sat 8/9

7:25 pm-10:16 pm

Nonstop2h 51m

Seattle/Tacoma Intl

Sat 8/16

6:45 am-9:40 am

Nonstop2h 55m

$167

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 8/26

7:00 am-9:45 am

Nonstop2h 45m

Seattle/Tacoma Intl

Tue 9/16

8:15 pm-11:02 pm

Nonstop2h 47m

$177

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Wed 8/13

9:50 am-12:35 pm

Nonstop2h 45m

Seattle/Tacoma Intl

Sat 8/16

11:28 am-3:47 pm

1 stop4h 19m

$187

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Mon 6/30

9:00 am-1:15 pm

1 stop4h 15m

Seattle/Tacoma Intl

Fri 7/4

6:15 am-12:15 pm

1 stop6h 00m

$199

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Sat 7/26

7:00 am-2:20 pm

1 stop7h 20m

Seattle/Tacoma Intl

Sat 8/2

6:00 am-8:50 am

Nonstop2h 50m

$224

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Sat 6/28

6:50 pm-9:45 pm

Nonstop2h 55m

Seattle/Tacoma Intl

Sat 7/5

8:00 am-11:01 am

Nonstop3h 01m

$258

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Wed 7/9

6:00 am-4:25 pm

1 stop10h 25m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 18 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 June 9, 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 $238). Flying from Riverside to Seattle in July is currently the most expensive (average of $391). 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 June 12, 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 June 8, 2025.

Travelers seeking maximum savings on their Riverside to Seattle flight should consider departing on Saturday at noon 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 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 June 12, 2025.

The most flights from R1V to SEA are scheduled on a Wednesday (124 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 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 June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 67 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, 327 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 ($79), Southwest ($84), and Frontier ($85).

  • 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 SkyWest Airlines (96%), Air France (94%) or ITA Airways (94%) 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 $1,098, our data shows the cheapest flight currently is $87. When looking at the most popular route, (Los Angeles - Seattle/Tacoma Intl), you can expect to pay $112 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 $391). 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
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Riverside to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$41Average$147FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$61Average$131FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$96Average$264FlexibilityNo cancel feeOn-time85%
DeltaCheapest$114Average$260FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$139Average$259FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$150Average$303FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$154Average$321FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$157Average$357FlexibilityNo cancel feeOn-time71%

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