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$53+ Cheap flights from Ontario (ONT) to Washington

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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SEA
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Ontario to Washington

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Washington (USWA). 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 November 21, 2024.

Find flight deals from Ontario to Washington

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

This Cheapflightsfares deal was found by Cheapflights users on 11/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/168:04 amONT - PDX
Nonstop2h 21mFrontier
Mon 12/306:59 pmPDX - ONT
Nonstop2h 20mFrontier
Deal found 11/20$82
This Cheapflightsfares deal was found by Cheapflights users on 11/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1211:09 amONT - SEA
Nonstop3h 00mFrontier
Tue 12/177:21 pmSEA - ONT
Nonstop2h 38mFrontier
Deal found 11/20$96
This Travelocity deal was found by Cheapflights users on 11/21. 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.
Fri 12/138:04 amONT - PDX
Nonstop2h 21mMultiple Airlines
Sun 12/154:29 pmPDX - ONT
Nonstop2h 20mMultiple Airlines
Deal found 11/21$133
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 12/116:00 amONT - SEA
Nonstop2h 53mAlaska Airlines
Sat 12/146:30 pmSEA - ONT
Nonstop2h 34mAlaska Airlines
Deal found 11/19$137
This Expedia deal was found by Cheapflights users on 11/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/138:55 pmONT - SEA
Nonstop2h 49mMultiple Airlines
Sun 12/1512:29 pmSEA - ONT
Nonstop2h 39mMultiple Airlines
Deal found 11/19$148
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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 12/157:00 amONT - PDX
Nonstop2h 25mAlaska Airlines
Wed 1/152:45 pmPDX - ONT
Nonstop2h 19mAlaska Airlines
Deal found 11/20$157
This Delta deal was found by Cheapflights users on 11/20. 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.
Wed 12/1111:18 amONT - SEA
Nonstop3h 09mDelta
Fri 12/137:45 amSEA - ONT
Nonstop2h 50mDelta
Deal found 11/20$157
This Delta deal was found by Cheapflights users on 11/19. 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 12/115:35 pmONT - PDX
1 stop5h 54mDelta
Thu 12/129:00 amPDX - ONT
1 stop7h 54mDelta
Deal found 11/19$176
This United Airlines deal was found by Cheapflights users on 11/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:00 amONT - SEA
1 stop4h 46mUnited Airlines
Wed 12/1111:56 amSEA - ONT
1 stop5h 47mUnited Airlines
Deal found 11/20$216
This Delta deal was found by Cheapflights users on 11/20. 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.
Wed 12/115:50 amONT - GEG
1 stop8h 10mDelta
Tue 12/177:16 pmGEG - ONT
1 stop4h 58mDelta
Deal found 11/20$221
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/116:00 amONT - GEG
1 stop4h 52mAlaska Airlines
Mon 12/165:50 pmGEG - ONT
1 stop6h 09mAlaska Airlines
Deal found 11/20$222
This United Airlines deal was found by Cheapflights users on 11/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/146:00 amONT - PDX
1 stop7h 10mUnited Airlines
Sat 12/147:30 pmPDX - ONT
1 stop4h 28mUnited Airlines
Deal found 11/20$226

Find flights from Ontario to Washington within your budget

Customize your flight search to find flights from Ontario to Washington 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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

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Route

Depart

Return

Price

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Mon 12/16

8:04 am-10:25 am

Nonstop2h 21m

Portland

Mon 12/30

6:59 pm-9:19 pm

Nonstop2h 20m

$82

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 12/12

11:09 am-2:09 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Tue 12/17

7:21 pm-9:59 pm

Nonstop2h 38m

$96

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Fri 12/13

8:04 am-10:25 am

Nonstop2h 21m

Portland

Sun 12/15

4:29 pm-6:49 pm

Nonstop2h 20m

$133

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 1/14

11:14 am-1:38 pm

Nonstop2h 24m

Portland

Sat 1/18

2:45 pm-5:04 pm

Nonstop2h 19m

$137

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 12/11

6:00 am-8:53 am

Nonstop2h 53m

Seattle/Tacoma Intl

Sat 12/14

6:30 pm-9:04 pm

Nonstop2h 34m

$137

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 12/13

8:55 pm-11:44 pm

Nonstop2h 49m

Seattle/Tacoma Intl

Sun 12/15

12:29 pm-3:08 pm

Nonstop2h 39m

$148

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 1/7

6:00 am-8:55 am

Nonstop2h 55m

Seattle/Tacoma Intl

Fri 1/10

7:45 pm-10:32 pm

Nonstop2h 47m

$157

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Fri 12/6

1:25 pm-6:30 pm

1 stop5h 05m

Portland

Sun 12/8

5:19 pm-12:14 am

1 stop6h 55m

$186

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 2/18

7:40 pm-12:55 am

1 stop5h 15m

Seattle/Tacoma Intl

Sat 2/22

7:15 am-2:30 pm

1 stop7h 15m

$195

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 1/8

6:00 am-11:43 pm

1 stop17h 43m

Spokane

Tue 1/14

5:48 pm-8:13 pm

1 stop26h 25m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 50 results
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Best time to book a flight from Ontario to Washington

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

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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to State of Washington (average of $238). Flying from Ontario to State of Washington 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 ONT to WA?

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to State of Washington as you normally would.

Weekly flight availability from Ontario to State of Washington

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

The most flights from ONT to USWA are scheduled on a Wednesday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington 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 State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated November 21, 2024.
Get a feel of what it's like to fly with Delta, Frontier and United Airlines from Ontario to Washington by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

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
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

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
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

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
8,759 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

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
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

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.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

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 Ontario to Washington. 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 from for flights from Ontario to Washington?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Washington from Ontario.

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

    This flight path from Ontario to Washington was viewed by 151 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $53. Users have also found prices from $69 and $69 on Alaska Airlines and Delta, respectively.

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

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

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

    Before booking your flight to State of Washington from Ontario, check out the most reliable airlines to get you to your destination on time: Air France (100%), LATAM Airlines (100%), ITA Airways( 100%).

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

    Looking at all options, your cheapest flight can be booked for $47. While the most popular route (Ontario - Seattle/Tacoma Intl) can be booked for $101 on average our data indicates $441 when flying from Ontario to State of Washington.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to State of Washington (average of $238). Flying from Ontario to State of Washington 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.

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Alternative routes for Ontario to Washington

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Top 6 airlines flying from Ontario to Washington

Discover the top 6 airlines that operate flights from Ontario to Washington. 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$62Average$138FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$71Average$130FlexibilityNo cancel feeOn-time65%
DeltaCheapest$104Average$317FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$123Average$423FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$243Average$401FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$252Average$416FlexibilityNo cancel feeOn-time63%
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