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Cheap flights from Washington to Ontario (ONT) from $34

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — ONT
May 8 — May 151
From?
To?
Wed 5/8
Wed 5/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

How far in advance should I book a flight from State of Washington to Ontario?

To save on the cost of your flight from State of Washington to Ontario, book at least 56 days before your planned departure. Booking around this time can save you about 87% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $279 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $403.

What is the cheapest month to fly from State of Washington to Ontario?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Ontario. Flights to Ontario from State of Washington in September are about $226 on average during September, but can be found for as low as $69.

When is the cheapest time to fly from State of Washington to Ontario (WA - ONT)?

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.

Cheap Frontier flights from Washington to Ontario

Explore cheap flight options specifically provided by Frontier for the route between Washington and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Take a peek at the cheapest Frontier flights we've detected traveling from Washington to Ontario. Come back soon if you're not finding the exact deal you're looking for.
Tue 5/211:57 pmSEA - ONT
Nonstop2h 44mFrontier
Tue 5/2810:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$75
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 5/2910:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$77
Sat 5/251:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 6/110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$78
Sat 6/83:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/1910:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$79
Wed 5/221:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 5/2510:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 4/30$82
Tue 5/211:57 pmSEA - ONT
Nonstop2h 44mFrontier
Thu 5/2310:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$83
Sat 6/223:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/2610:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$84
Fri 6/71:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sun 6/911:51 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$86
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 6/110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$87

Cheap Delta flights from Washington to Ontario

Explore cheap flight options specifically provided by Delta for the route between Washington and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
To aid your search, here are some of the cheapest Delta flights we've found from Washington to Ontario. Deals frequently update to provide users with more options.
Wed 7/107:30 pmSEA - ONT
Nonstop2h 45mDelta
Tue 7/165:00 pmONT - SEA
1 stop6h 59mDelta
Deal found 5/1$216
Tue 6/411:32 amPSC - ONT
1 stop6h 29mDelta
Tue 6/115:00 pmONT - PSC
1 stop5h 19mDelta
Deal found 5/1$238
Sat 5/1812:42 pmGEG - ONT
1 stop5h 20mDelta
Tue 5/216:50 amONT - GEG
1 stop4h 58mDelta
Deal found 5/1$258
Wed 5/226:10 amGEG - ONT
1 stop7h 23mDelta
Tue 5/286:42 pmONT - GEG
1 stop5h 23mDelta
Deal found 4/30$266
Thu 5/306:00 amGEG - ONT
1 stop6h 13mDelta
Tue 6/411:22 amONT - GEG
1 stop5h 38mDelta
Deal found 5/2$277
Sun 5/196:00 amGEG - ONT
1 stop6h 13mDelta
Wed 5/226:50 amONT - GEG
1 stop4h 58mDelta
Deal found 5/1$283
Wed 6/511:32 amPSC - ONT
2 stops12h 11mDelta
Sat 6/86:30 pmONT - PSC
1 stop4h 35mDelta
Deal found 5/1$295
Tue 7/26:12 amGEG - ONT
1 stop7h 16mDelta
Mon 7/83:01 pmONT - GEG
1 stop7h 58mDelta
Deal found 5/2$296
Wed 5/83:23 pmSEA - ONT
Nonstop2h 39mDelta
Wed 5/152:13 pmONT - SEA
Nonstop2h 57mDelta
Deal found 5/1$337

Cheap Washington to Ontario flights in May & June 2024

Find cheap flight options from Washington to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 3, 2024.
Listed are some of the best fares we've found on flights departing from Washington to Ontario in 2024. Check back in a little while for more flight options.
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 5/2910:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$77
Sat 5/251:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 6/110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$78
Sat 6/83:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/1910:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$79
Wed 5/221:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 5/2510:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 4/30$82
Tue 5/211:57 pmSEA - ONT
Nonstop2h 44mFrontier
Thu 5/2310:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$83
Sat 6/223:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/2610:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$84
Fri 6/71:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sun 6/911:51 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$86
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 6/110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$87
Sat 6/11:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sun 6/210:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$88

Washington to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Washington and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Listed are some of the best fares we've found on flights departing from Washington to Ontario in 2024. Check back in a little while for more flight options.
Sat 6/223:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/2610:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$84
Fri 6/71:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sun 6/911:51 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$86
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 6/110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$87
Sat 6/11:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sun 6/210:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$88
Sat 6/11:57 pmSEA - ONT
Nonstop2h 44mFrontier
Mon 6/310:24 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$89
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Thu 5/3010:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$91
Thu 5/232:27 pmSEA - ONT
Nonstop2h 44mFrontier
Tue 5/2810:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$92
Sat 5/181:57 pmSEA - ONT
Nonstop2h 44mFrontier
Tue 5/2110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$93
Thu 5/302:27 pmSEA - ONT
Nonstop2h 44mFrontier
Sun 6/210:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$94

Non-stop flights to Ontario from Washington

Discover non-stop flight options from Washington to Ontario. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Take a look at some of the direct flights traveling from Washington to Ontario in the near future. Users seeking other options on flights from Washington to Ontario should update the search form at the top of the page.
Sat 6/11:57 pmSEA - ONT
Nonstop2h 44mFrontier
Tue 6/410:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$78
Sat 6/83:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/1910:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$79
Wed 5/221:57 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 5/2510:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 4/30$82
Tue 5/211:57 pmSEA - ONT
Nonstop2h 44mFrontier
Thu 5/2310:34 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$83
Sat 6/223:36 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/2610:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$84
Fri 5/312:17 pmSEA - ONT
Nonstop2h 44mFrontier
Mon 6/310:24 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$86
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Sat 6/110:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$87
Thu 5/232:27 pmSEA - ONT
Nonstop2h 44mFrontier
Wed 6/510:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 4/30$88
Sat 6/11:57 pmSEA - ONT
Nonstop2h 44mFrontier
Mon 6/310:24 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/1$89

Washington to Ontario flights leaving soon

Find last-minute flight options from Washington to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Have a look at some of the flights available from Washington to Ontario departing last-minute. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 5/119:32 pmSEA - ONT
1 stop8h 59mFrontier
Tue 5/2810:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$124
Sun 5/129:20 pmSEA - ONT
1 stop9h 43mFrontier
Tue 5/2810:04 amONT - SEA
Nonstop2h 53mFrontier
Deal found 5/2$128
Wed 5/89:55 amSEA - ONT
1 stop12h 05mFrontier
Tue 5/148:48 pmONT - SEA
1 stop12h 07mFrontier
Deal found 5/1$148
Wed 5/89:55 amSEA - ONT
1 stop12h 05mFrontier
Wed 5/1511:09 pmONT - SEA
1 stop23h 03mFrontier
Deal found 5/1$149
Wed 5/89:55 amSEA - ONT
1 stop12h 05mFrontier
Sat 5/1110:57 pmONT - SEA
1 stop9h 38mFrontier
Deal found 5/1$150
Fri 5/108:30 pmSEA - ONT
1 stop25h 28mFrontier
Wed 5/1511:09 pmONT - SEA
1 stop23h 03mFrontier
Deal found 5/1$152
Fri 5/109:40 amSEA - ONT
1 stop11h 49mFrontier
Tue 5/148:48 pmONT - SEA
1 stop12h 07mFrontier
Deal found 5/2$153
Wed 5/89:55 amSEA - ONT
1 stop12h 05mFrontier
Fri 5/1010:29 pmONT - SEA
1 stop10h 51mFrontier
Deal found 5/1$154
Sun 5/129:20 pmSEA - ONT
1 stop13h 56mFrontier
Wed 5/1511:09 pmONT - SEA
1 stop23h 03mFrontier
Deal found 5/1$156

One-way flights to Ontario from Washington

Search for one-way flight options from Washington to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Take a look at some of the one-way flights we've detected from Washington to Ontario. Users in need of a round-trip flight from Washington to Ontario instead should update the search form at the top of page.
Wed 5/221:57 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/1$34
Wed 6/52:22 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/1$35
Sat 6/11:57 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/1$39
Sun 5/262:25 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/2$40
Thu 5/232:27 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/2$43
Wed 7/101:37 pmSEA - ONT
Nonstop2h 37mFrontier
Deal found 5/2$44
Tue 6/181:47 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/2$45
Fri 5/242:17 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/2$48
Sat 5/181:57 pmSEA - ONT
Nonstop2h 44mFrontier
Deal found 5/1$49

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 2,864,334 searches. Data last updated May 3, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$75 - $298

Route

Depart

Return

Price

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 5/21

Nonstop2h 44m

Ontario

Tue 5/28

Nonstop2h 53m

$75

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 5/24

Nonstop2h 44m

Ontario

Wed 5/29

Nonstop2h 53m

$77

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 5/25

Nonstop2h 44m

Ontario

Sat 6/1

Nonstop2h 53m

$78

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 6/8

Nonstop2h 44m

Ontario

Wed 6/19

Nonstop2h 53m

$79

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Wed 5/22

Nonstop2h 44m

Ontario

Sat 5/25

Nonstop2h 53m

$82

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 5/21

Nonstop2h 44m

Ontario

Thu 5/23

Nonstop2h 53m

$83

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 6/22

Nonstop2h 44m

Ontario

Wed 6/26

Nonstop2h 53m

$84

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Wed 7/10

Nonstop2h 45m

Ontario

Tue 7/16

1 stop6h 59m

$216

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Sat 5/25

1 stop5h 41m

Ontario

Wed 5/29

1 stop7h 38m

$298

Flights are sorted by cheapest first

Deals found on 5/2

No data available for this route at this time. Please check back soon.

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 May 3, 2024.
To help decide which airline to fly from Washington to Ontario, see what other customers have to say about Frontier, Delta and Alaska Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,108 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Crew

8.7

Overall

8.2

Food

7.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Southwest
8.2
Very good
6,108 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Crew

8.7

Overall

8.2

Food

7.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Alaska Airlines
8.1
Very good
9,118 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Crew

8.7

Overall

8.2

Food

7.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Delta
8.1
Very good
10,861 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Crew

8.7

Overall

8.2

Food

7.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

United Airlines
7.4
Good
11,142 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Crew

8.7

Overall

8.2

Food

7.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

American Airlines
7.3
Good
14,769 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Crew

8.7

Overall

8.2

Food

7.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

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.

  • Can I find flights from State of Washington to Ontario for under $100 on Cheapflights?

    Yes, there are multiple flights from State of Washington to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $75, but on average you can expect to pay $88.

  • Are there nonstop flights from State of Washington to Ontario for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from State of Washington to Ontario under $100. A good price for a nonstop flight from State of Washington to Ontario is less than $91.

  • Are there last-minute flights available from State of Washington to Ontario for under $200?

    There are currently 20+ open flights from State of Washington to Ontario within the next 7 days for less than $200.

  • What days are nonstop flights available from State of Washington to Ontario?

    Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Wednesday, Friday, Saturday.

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

    Flights from Washington to Ontario have been viewed 28 times in the past calendar month.

  • How many flights depart from State of Washington to Ontario on average per day?

    20 flight departures from State of Washington to Ontario per day on average.
    Afternoon (Noon - 6pm) - 80% of flight departures
    Evening (6pm - Midnight) - 20% of flight departures

  • How long is the flight from State of Washington to Ontario?

    Airlines like Frontier fly from State of Washington to Ontario in about 2h 44m. The time it takes to get you to your destination is usually consistent. The distance from State of Washington to Ontario is about 962 mi. Generally, flights for this route are nonstop.

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

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

  • What are the most popular airlines that fly from State of Washington to Ontario?

    The most popular airlines flying from State of Washington to Ontario are Undisclosed Carrier, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

  • 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 WestJet (100%), Korean Air (88%) and KLM (88%).

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

    The cheapest flight price from State of Washington to Ontario is $37. On average you can expect to pay $301. The most popular route, (Seattle/Tacoma Intl - Ontario), can usually be booked for $72.

  • What does SEA to ONT mean?

    SEA and ONT are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to ONT refers to a flight route from Seattle/Tacoma Intl Airport to Ontario Airport. Spokane Airport (GEG), Pasco Tri Cities Airport (PSC), Bellingham Airport (BLI), Everett Paine Field Airport (PAE), Seattle Lake Union Spb Airport (LKE) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Washington to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Washington to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Washington to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Washington to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Washington to Ontario that allow pets onboard?

    Many airlines flying from Washington to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Washington to Ontario?

    Yes, you can often find last-minute deals on Washington to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the State of Washington to Ontario flight deals updated?

    The State of Washington to Ontario flight deals you see on this page were last updated on 5/2.

See more FAQs

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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 2,864,334 searches. Data last updated May 3, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$49Average$433FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from Washington to Ontario by cabin class

Find flights from Washington to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Washington to Ontario

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 May 3, 2024.
1%of flight departuresEarly morningMidnight to 6 am
12%of flight departuresMorning6 am to noon
51%of flight departuresAfternoonNoon to 6 pm
36%of flight departuresEvening6 pm to midnight
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington to Ontario?

Cheapflights helps you search for flights from Washington to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Washington to Ontario?

Cheapflights helps you find that perfect flight to Ontario from Washington by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Washington to Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington to Ontario, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Washington to Ontario become cheaper?

Of course! You can now track prices for flights from Washington to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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