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Ontario

$44+ Cheap flights from Washington to Ontario (ONT)

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ONT
Dec 26 — Jan 21
Thu 12/26
Thu 1/2
1 adult, Economy
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Cheap flight deals from Washington to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 21, 2024.

Round-trip from

$100
(Mytrip)

One-way from

$49
(Cheapflightsfares)
From Washington to Ontario
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One-way flight from Washington to Ontario
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Find flight deals from Washington to Ontario

Cheapest flights from Washington to Ontario
Explore the most affordable flight options available from Washington to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2024.

This FlightHub deal was found by Cheapflights users on 12/20. 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.
Mon 12/306:59 pmPDX - ONT
Nonstop2h 20mFrontier
Mon 1/66:03 pmONT - PDX
Nonstop2h 21mFrontier
Deal found 12/20$113
This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/317:01 pmSEA - ONT
Nonstop2h 38mFrontier
Sun 1/1211:18 amONT - SEA
Nonstop2h 59mFrontier
Deal found 12/21$198
This eDestinos deal was found by Cheapflights users on 12/20. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:59 pmPDX - ONT
Nonstop2h 20mMultiple Airlines
Sun 1/510:31 pmONT - PDX
1 stop19h 51mMultiple Airlines
Deal found 12/20$240
This Delta deal was found by Cheapflights users on 12/21. 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.
Tue 12/315:30 amSEA - ONT
1 stop6h 38mDelta
Mon 1/136:00 amONT - SEA
Nonstop2h 55mDelta
Deal found 12/21$242
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/309:21 pmSEA - ONT
Nonstop2h 38mAlaska Airlines
Sun 1/126:00 amONT - SEA
Nonstop2h 54mAlaska Airlines
Deal found 12/21$287
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:30 pmSEA - ONT
1 stop6h 30mUnited Airlines
Mon 1/136:15 amONT - SEA
1 stop5h 05mUnited Airlines
Deal found 12/21$296
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/225:39 pmPDX - ONT
Nonstop2h 18mAlaska Airlines
Wed 1/155:44 pmONT - PDX
Nonstop2h 26mAlaska Airlines
Deal found 12/20$327
This Delta deal was found by Cheapflights users on 12/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:20 pmPDX - ONT
1 stop5h 08mDelta
Wed 1/15:30 amONT - PDX
1 stop7h 09mDelta
Deal found 12/20$352
This Southwest deal was found by Cheapflights users on 12/21. 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.
Mon 12/305:25 pmSEA - ONT
1 stop6h 45mSouthwest
Sun 1/56:40 amONT - SEA
1 stop5h 55mSouthwest
Deal found 12/21$386
This Travelocity deal was found by Cheapflights users on 12/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/266:52 pmSEA - ONT
Nonstop2h 39mMultiple Airlines
Tue 12/316:00 amONT - SEA
Nonstop2h 56mMultiple Airlines
Deal found 12/21$393
This Southwest deal was found by Cheapflights users on 12/21. 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.
Tue 12/311:30 pmGEG - ONT
1 stop8h 40mSouthwest
Wed 1/16:15 amONT - GEG
1 stop8h 15mSouthwest
Deal found 12/21$422
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Sun 12/295:35 pmPSC - ONT
1 stop6h 24mAlaska Airlines
Wed 1/86:00 amONT - PSC
1 stop7h 17mAlaska Airlines
Deal found 12/21$531

Find flights from Washington to Ontario within your budget

Customize your flight search to find flights from Washington to Ontario 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 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandOntario

PDX - ONT

PDXONT

Portland

Fri 1/24

10:35 am-12:56 pm

Nonstop2h 21m

Ontario

Mon 1/27

6:45 am-10:31 pm

1 stop15h 46m

$100

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Thu 1/23

10:38 am-6:00 pm

1 stop7h 22m

Ontario

Thu 1/30

6:45 am-3:35 pm

1 stop8h 50m

$111

PortlandOntario

PDX - ONT

PDXONT

Portland

Wed 1/22

8:13 am-10:34 am

Nonstop2h 21m

Ontario

Fri 1/24

8:01 am-10:27 am

Nonstop2h 26m

$123

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 1/11

8:00 am-10:49 am

Nonstop2h 49m

Ontario

Sun 1/12

11:18 am-2:17 pm

Nonstop2h 59m

$132

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 1/28

8:00 am-10:49 am

Nonstop2h 49m

Ontario

Tue 1/28

4:06 pm-6:59 pm

Nonstop2h 53m

$137

PortlandOntario

PDX - ONT

PDXONT

Portland

Sat 2/22

2:45 pm-4:59 pm

Nonstop2h 14m

Ontario

Tue 2/25

5:44 pm-8:08 pm

Nonstop2h 24m

$149

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 1/10

12:40 pm-3:25 pm

Nonstop2h 45m

Ontario

Sat 1/11

4:05 pm-7:00 pm

Nonstop2h 55m

$187

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 1/14

12:50 pm-6:04 pm

1 stop5h 14m

Ontario

Fri 1/17

10:47 am-3:45 pm

1 stop4h 58m

$191

PortlandOntario

PDX - ONT

PDXONT

Portland

Mon 1/6

5:15 pm-10:32 pm

1 stop5h 17m

Ontario

Sun 1/12

6:00 am-10:47 am

1 stop4h 47m

$196

PascoOntario

PSC - ONT

PSCONT

Pasco Tri Cities

Fri 1/10

5:10 pm-11:53 pm

1 stop6h 43m

Ontario

Tue 1/14

6:00 am-11:03 am

1 stop5h 03m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 46 results
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Best time to book a flight from Washington to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Washington 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 Washington to Ontario

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

What is the cheapest month to book a flight from State of Washington to Ontario?

Currently, August is the cheapest month in which you can book a flight from State of Washington to Ontario (average of $246). Flying from State of Washington to Ontario in March is currently the most expensive (average of $317). 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 WA to ONT?

Find hourly flight availability from Washington to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2024.

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

Weekly flight availability from State of Washington to Ontario

Explore weekly flight availability from Washington to Ontario. 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 21, 2024.

The most flights from USWA to ONT are scheduled on a Friday (15 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated December 21, 2024.
To help decide which airline to fly from Washington to Ontario, see what other customers have to say about Southwest, Frontier and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,804 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,804 reviews
Southwest
8.1
Very good
4,804 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,537 reviews
Southwest
8.1
Very good
4,804 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,597 reviews
Southwest
8.1
Very good
4,804 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,028 reviews
Southwest
8.1
Very good
4,804 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,804 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from Washington to Ontario. 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 Ontario from Washington?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Washington. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How popular is this State of Washington to Ontario flight route?

    Flights from Washington to Ontario have been viewed 73 times in the past calendar month.

  • What are the cheapest airlines to fly from State of Washington to Ontario one-way?

    One-way options have recently been found by users for as low as $49 on Frontier. Other airlines that offer cheap prices include Delta from $69 and Alaska Airlines from $78 one-way.

  • What are the most popular routes from State of Washington to Ontario?

    While some choose either Portland - Ontario or Spokane - Ontario, Seattle/Tacoma Intl - Ontario is the most popular route from State of Washington to Ontario.

  • What are the most reliable airlines from State of Washington to Ontario?

    The top 3 most reliable airlines when flying from State of Washington to Ontario are Air France (100%), Aeromexico (100%) and WestJet (100%).

  • What are the cheapest flights from State of Washington to Ontario?

    The cheapest flight price from State of Washington to Ontario is $34. On average you can expect to pay $337. The most popular route, (Seattle/Tacoma Intl - Ontario), can usually be booked for $96.

  • Can I find deals for flights from Washington to Ontario that include hotel bookings?

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

  • How can I find direct flights from Washington to Ontario?

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

  • Can I find deals for business class flights from Washington to Ontario?

    Yes. Cheapflights offers flight deals from Washington to Ontario 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 State of Washington to Ontario?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Ontario (average of $246). Flying from State of Washington to Ontario in March is currently the most expensive (average of $317). 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.

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Alternative routes for Washington to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Washington to Ontario

Discover the top 6 airlines that operate flights from Washington to Ontario. 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 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$40Average$127FlexibilityNo cancel feeOn-time65%
FrontierCheapest$55Average$130FlexibilityNo cancel feeOn-time62%
DeltaCheapest$117Average$316FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$123Average$398FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$281Average$416FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$302Average$530FlexibilityNo cancel feeOn-time69%
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